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8 years ago[pdb] Convert StringRefs to ArrayRef<uint8_t>s.
Zachary Turner [Tue, 7 Jun 2016 20:38:37 +0000 (20:38 +0000)]
[pdb] Convert StringRefs to ArrayRef<uint8_t>s.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@272058 91177308-0d34-0410-b5e6-96231b3b80d8

8 years agoAdd info to SourceLevelDebugging about CodeView
Reid Kleckner [Tue, 7 Jun 2016 20:27:30 +0000 (20:27 +0000)]
Add info to SourceLevelDebugging about CodeView

Adds some discussion of the nature of the format, and some developer
docs on how to work with it in LLVM.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@272057 91177308-0d34-0410-b5e6-96231b3b80d8

8 years agoRevert "Differential Revision: http://reviews.llvm.org/D20557"
Eric Christopher [Tue, 7 Jun 2016 20:27:12 +0000 (20:27 +0000)]
Revert "Differential Revision: reviews.llvm.org/D20557"

Author: Wei Ding <wei.ding2@amd.com>
Date:   Tue Jun 7 19:04:44 2016 +0000

    Differential Revision: http://reviews.llvm.org/D20557

    git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@272044
    91177308-0d34-0410-b5e6-96231b3b80d8

as it was breaking the bots.

This reverts commit r272044.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@272056 91177308-0d34-0410-b5e6-96231b3b80d8

8 years agoReformat for some clarity and 80-columns. NFC.
Eric Christopher [Tue, 7 Jun 2016 20:27:06 +0000 (20:27 +0000)]
Reformat for some clarity and 80-columns. NFC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@272055 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[libfuzzer] custom crossover interface function.
Mike Aizatsky [Tue, 7 Jun 2016 20:22:15 +0000 (20:22 +0000)]
[libfuzzer] custom crossover interface function.

Differential Revision: http://reviews.llvm.org/D21089

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@272054 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[stack-protection] Add support for MSVC buffer security check
Etienne Bergeron [Tue, 7 Jun 2016 20:15:35 +0000 (20:15 +0000)]
[stack-protection] Add support for MSVC buffer security check

Summary:
This patch is adding support for the MSVC buffer security check implementation

The buffer security check is turned on with the '/GS' compiler switch.
  * https://msdn.microsoft.com/en-us/library/8dbf701c.aspx
  * To be added to clang here: http://reviews.llvm.org/D20347

Some overview of buffer security check feature and implementation:
  * https://msdn.microsoft.com/en-us/library/aa290051(VS.71).aspx
  * http://www.ksyash.com/2011/01/buffer-overflow-protection-3/
  * http://blog.osom.info/2012/02/understanding-vs-c-compilers-buffer.html

For the following example:
```
int example(int offset, int index) {
  char buffer[10];
  memset(buffer, 0xCC, index);
  return buffer[index];
}
```

The MSVC compiler is adding these instructions to perform stack integrity check:
```
        push        ebp
        mov         ebp,esp
        sub         esp,50h
  [1]   mov         eax,dword ptr [__security_cookie (01068024h)]
  [2]   xor         eax,ebp
  [3]   mov         dword ptr [ebp-4],eax
        push        ebx
        push        esi
        push        edi
        mov         eax,dword ptr [index]
        push        eax
        push        0CCh
        lea         ecx,[buffer]
        push        ecx
        call        _memset (010610B9h)
        add         esp,0Ch
        mov         eax,dword ptr [index]
        movsx       eax,byte ptr buffer[eax]
        pop         edi
        pop         esi
        pop         ebx
  [4]   mov         ecx,dword ptr [ebp-4]
  [5]   xor         ecx,ebp
  [6]   call        @__security_check_cookie@4 (01061276h)
        mov         esp,ebp
        pop         ebp
        ret
```

The instrumentation above is:
  * [1] is loading the global security canary,
  * [3] is storing the local computed ([2]) canary to the guard slot,
  * [4] is loading the guard slot and ([5]) re-compute the global canary,
  * [6] is validating the resulting canary with the '__security_check_cookie' and performs error handling.

Overview of the current stack-protection implementation:
  * lib/CodeGen/StackProtector.cpp
    * There is a default stack-protection implementation applied on intermediate representation.
    * The target can overload 'getIRStackGuard' method if it has a standard location for the stack protector cookie.
    * An intrinsic 'Intrinsic::stackprotector' is added to the prologue. It will be expanded by the instruction selection pass (DAG or Fast).
    * Basic Blocks are added to every instrumented function to receive the code for handling stack guard validation and errors handling.
    * Guard manipulation and comparison are added directly to the intermediate representation.

  * lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
  * lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
    * There is an implementation that adds instrumentation during instruction selection (for better handling of sibbling calls).
      * see long comment above 'class StackProtectorDescriptor' declaration.
    * The target needs to override 'getSDagStackGuard' to activate SDAG stack protection generation. (note: getIRStackGuard MUST be nullptr).
      * 'getSDagStackGuard' returns the appropriate stack guard (security cookie)
    * The code is generated by 'SelectionDAGBuilder.cpp' and 'SelectionDAGISel.cpp'.

  * include/llvm/Target/TargetLowering.h
    * Contains function to retrieve the default Guard 'Value'; should be overriden by each target to select which implementation is used and provide Guard 'Value'.

  * lib/Target/X86/X86ISelLowering.cpp
    * Contains the x86 specialisation; Guard 'Value' used by the SelectionDAG algorithm.

Function-based Instrumentation:
  * The MSVC doesn't inline the stack guard comparison in every function. Instead, a call to '__security_check_cookie' is added to the epilogue before every return instructions.
  * To support function-based instrumentation, this patch is
    * adding a function to get the function-based check (llvm 'Value', see include/llvm/Target/TargetLowering.h),
      * If provided, the stack protection instrumentation won't be inlined and a call to that function will be added to the prologue.
    * modifying (SelectionDAGISel.cpp) do avoid producing basic blocks used for inline instrumentation,
    * generating the function-based instrumentation during the ISEL pass (SelectionDAGBuilder.cpp),
    * if FastISEL (not SelectionDAG), using the fallback which rely on the same function-based implemented over intermediate representation (StackProtector.cpp).

Modifications
  * adding support for MSVC (lib/Target/X86/X86ISelLowering.cpp)
  * adding support function-based instrumentation (lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp, .h)

Results

  * IR generated instrumentation:
```
clang-cl /GS test.cc /Od /c -mllvm -print-isel-input
```

```
*** Final LLVM Code input to ISel ***

; Function Attrs: nounwind sspstrong
define i32 @"\01?example@@YAHHH@Z"(i32 %offset, i32 %index) #0 {
entry:
  %StackGuardSlot = alloca i8*                                                  <<<-- Allocated guard slot
  %0 = call i8* @llvm.stackguard()                                              <<<-- Loading Stack Guard value
  call void @llvm.stackprotector(i8* %0, i8** %StackGuardSlot)                  <<<-- Prologue intrinsic call (store to Guard slot)
  %index.addr = alloca i32, align 4
  %offset.addr = alloca i32, align 4
  %buffer = alloca [10 x i8], align 1
  store i32 %index, i32* %index.addr, align 4
  store i32 %offset, i32* %offset.addr, align 4
  %arraydecay = getelementptr inbounds [10 x i8], [10 x i8]* %buffer, i32 0, i32 0
  %1 = load i32, i32* %index.addr, align 4
  call void @llvm.memset.p0i8.i32(i8* %arraydecay, i8 -52, i32 %1, i32 1, i1 false)
  %2 = load i32, i32* %index.addr, align 4
  %arrayidx = getelementptr inbounds [10 x i8], [10 x i8]* %buffer, i32 0, i32 %2
  %3 = load i8, i8* %arrayidx, align 1
  %conv = sext i8 %3 to i32
  %4 = load volatile i8*, i8** %StackGuardSlot                                  <<<-- Loading Guard slot
  call void @__security_check_cookie(i8* %4)                                    <<<-- Epilogue function-based check
  ret i32 %conv
}
```

  * SelectionDAG generated instrumentation:

```
clang-cl /GS test.cc /O1 /c /FA
```

```
"?example@@YAHHH@Z":                    # @"\01?example@@YAHHH@Z"
# BB#0:                                 # %entry
        pushl   %esi
        subl    $16, %esp
        movl    ___security_cookie, %eax                                        <<<-- Loading Stack Guard value
        movl    28(%esp), %esi
        movl    %eax, 12(%esp)                                                  <<<-- Store to Guard slot
        leal    2(%esp), %eax
        pushl   %esi
        pushl   $204
        pushl   %eax
        calll   _memset
        addl    $12, %esp
        movsbl  2(%esp,%esi), %esi
        movl    12(%esp), %ecx                                                  <<<-- Loading Guard slot
        calll   @__security_check_cookie@4                                      <<<-- Epilogue function-based check
        movl    %esi, %eax
        addl    $16, %esp
        popl    %esi
        retl
```

Reviewers: kcc, pcc, eugenis, rnk

Subscribers: majnemer, llvm-commits, hans, thakis, rnk

Differential Revision: http://reviews.llvm.org/D20346

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@272053 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[lit] Fix an uninitialized var on Windows.
Daniel Dunbar [Tue, 7 Jun 2016 20:14:17 +0000 (20:14 +0000)]
[lit] Fix an uninitialized var on Windows.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@272052 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[yaml] Add a ScalarTraits for mapping endian aware types.
Zachary Turner [Tue, 7 Jun 2016 19:32:09 +0000 (19:32 +0000)]
[yaml] Add a ScalarTraits for mapping endian aware types.

This allows mapping of any endian-aware type whose underlying
type (e.g. uint32_t) provides a ScalarTraits specialization.

Reviewed by: majnemer
Differential Revision: http://reviews.llvm.org/D21057

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@272049 91177308-0d34-0410-b5e6-96231b3b80d8

8 years agoRevert r272045 since GCC doesn't know how to compile it.
Krzysztof Parzyszek [Tue, 7 Jun 2016 19:25:28 +0000 (19:25 +0000)]
Revert r272045 since GCC doesn't know how to compile it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@272048 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[Hexagon] Modify HexagonExpandCondsets to handle subregisters
Krzysztof Parzyszek [Tue, 7 Jun 2016 19:06:23 +0000 (19:06 +0000)]
[Hexagon] Modify HexagonExpandCondsets to handle subregisters

Also, switch to using functions from LiveIntervalAnalysis to update
live intervals, instead of performing the updates manually.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@272045 91177308-0d34-0410-b5e6-96231b3b80d8

8 years agoDifferential Revision: http://reviews.llvm.org/D20557
Wei Ding [Tue, 7 Jun 2016 19:04:44 +0000 (19:04 +0000)]
Differential Revision: reviews.llvm.org/D20557

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@272044 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[pdb] Fix a potential overflow and remove unnecessary comments.
Zachary Turner [Tue, 7 Jun 2016 18:42:39 +0000 (18:42 +0000)]
[pdb] Fix a potential overflow and remove unnecessary comments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@272043 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[CFLAA] Add AttrEscaped, remove bit twiddling functions.
George Burgess IV [Tue, 7 Jun 2016 18:35:37 +0000 (18:35 +0000)]
[CFLAA] Add AttrEscaped, remove bit twiddling functions.

This patch does a few things:

- Unifies AttrAll and AttrUnknown (since they were used for more or less
  the same purpose anyway).

- Introduces AttrEscaped, an attribute that notes that a value escapes
  our analysis for a given set, but not that an unknown value flows into
  said set.

- Removes functions that take bit indices, since we also had functions
  that took bitsets, and the use of both (with similar names) was
  unclear and bug-prone.

Patch by Jia Chen.

Differential Revision: http://reviews.llvm.org/D21000

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@272040 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[libfuzzer] prune_corpus option for disabling pruning during the load.
Mike Aizatsky [Tue, 7 Jun 2016 18:16:32 +0000 (18:16 +0000)]
[libfuzzer] prune_corpus option for disabling pruning during the load.

Summary:
The option is very useful for testing, plus I intend to measure
its effect on fuzzer effectiveness.

Differential Revision: http://reviews.llvm.org/D21084

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@272035 91177308-0d34-0410-b5e6-96231b3b80d8

8 years agoRevert "Use CMAKE_INSTALL_BINDIR instead of hardcoding bin for tools install paths"
Chris Bieneman [Tue, 7 Jun 2016 18:04:37 +0000 (18:04 +0000)]
Revert "Use CMAKE_INSTALL_BINDIR instead of hardcoding bin for tools install paths"

This reverts commit 0dc5a55f66ed06d7859c4e0474a87428d27775e6.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@272033 91177308-0d34-0410-b5e6-96231b3b80d8

8 years agoUse CMAKE_INSTALL_BINDIR instead of hardcoding bin for tools install paths
Chris Bieneman [Tue, 7 Jun 2016 18:01:16 +0000 (18:01 +0000)]
Use CMAKE_INSTALL_BINDIR instead of hardcoding bin for tools install paths

Summary:
This allows customizing the location executables and symlinks get installed to,
as with --bindir in autotools.

Reviewers: loladiro, beanz

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D20934

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@272031 91177308-0d34-0410-b5e6-96231b3b80d8

8 years agoReapply [AArch64] Fix isLegalAddImmediate() to return true for valid negative values.
Geoff Berry [Tue, 7 Jun 2016 16:48:43 +0000 (16:48 +0000)]
Reapply [AArch64] Fix isLegalAddImmediate() to return true for valid negative values.

Originally reviewed here: http://reviews.llvm.org/D17463

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@272023 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[utils/lit] Show available_features with --show-suites.
Daniel Dunbar [Tue, 7 Jun 2016 16:22:24 +0000 (16:22 +0000)]
[utils/lit] Show available_features with --show-suites.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@272022 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[lit] Improve logging with file redirection.
Daniel Dunbar [Tue, 7 Jun 2016 16:13:40 +0000 (16:13 +0000)]
[lit] Improve logging with file redirection.

 - This will cause lit to automatically include the first 1K of data in
   redirected output files when a command fails (previously if the command
   failed, but the main point of the test was, say, a `FileCheck` later on, then
   the log wasn't helpful in showing why the command failed).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@272021 91177308-0d34-0410-b5e6-96231b3b80d8

8 years agoQuick fix for the test from rL272014 "[LAA] Improve non-wrapping pointer
Andrey Turetskiy [Tue, 7 Jun 2016 15:52:35 +0000 (15:52 +0000)]
Quick fix for the test from rL272014 "[LAA] Improve non-wrapping pointer
detection by handling loop-invariant case" (s couple of buildbots failed).

Patch by Roman Shirokiy.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@272019 91177308-0d34-0410-b5e6-96231b3b80d8

8 years agoRevert "[MBP] Reduce code size by running tail merging in MBP."
Haicheng Wu [Tue, 7 Jun 2016 15:17:21 +0000 (15:17 +0000)]
Revert "[MBP] Reduce code size by running tail merging in MBP."

This reverts commit r271930, r271915, r271923.  They break a thumb selfhosting
bot.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@272017 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[X86][AVX512] Added 512-bit integer vector non-temporal load tests
Simon Pilgrim [Tue, 7 Jun 2016 15:12:47 +0000 (15:12 +0000)]
[X86][AVX512] Added 512-bit integer vector non-temporal load tests

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@272016 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[ARM] Accept conditional versions of BXNS and BLXNS
Oliver Stannard [Tue, 7 Jun 2016 14:58:48 +0000 (14:58 +0000)]
[ARM] Accept conditional versions of BXNS and BLXNS

These instructions end in "S" but are not flag-setting, so they need including
in the list of special cases in the assembly parser.

Differential Revision: http://reviews.llvm.org/D21077

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@272015 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[LAA] Improve non-wrapping pointer detection by handling loop-invariant case.
Andrey Turetskiy [Tue, 7 Jun 2016 14:55:27 +0000 (14:55 +0000)]
[LAA] Improve non-wrapping pointer detection by handling loop-invariant case.

This fixes PR26314. This patch adds new helper “isNoWrap” with detection of
loop-invariant pointer case.

Patch by Roman Shirokiy.

Ref: https://llvm.org/bugs/show_bug.cgi?id=26314

Differential Revision: http://reviews.llvm.org/D17268

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@272014 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[Linker/IRMover] Simplify the code a bit. NFCI.
Davide Italiano [Tue, 7 Jun 2016 14:55:04 +0000 (14:55 +0000)]
[Linker/IRMover] Simplify the code a bit. NFCI.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@272013 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[X86][SSE] Add general lowering of nontemporal vector loads (fixed bad merge)
Simon Pilgrim [Tue, 7 Jun 2016 13:47:23 +0000 (13:47 +0000)]
[X86][SSE] Add general lowering of nontemporal vector loads (fixed bad merge)

Currently the only way to use the (V)MOVNTDQA nontemporal vector loads instructions is through the int_x86_sse41_movntdqa style builtins.

This patch adds support for lowering nontemporal loads from general IR, allowing us to remove the movntdqa builtins in a future patch.

We currently still fold nontemporal loads into suitable instructions, we should probably look at removing this (and nontemporal stores as well) or at least make the target's folding implementation aware that its dealing with a nontemporal memory transaction.

There is also an issue that VMOVNTDQA only acts on 128-bit vectors on pre-AVX2 hardware - so currently a normal ymm load is still used on AVX1 targets.

Differential Review: http://reviews.llvm.org/D20965

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@272011 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[X86][SSE] Add general lowering of nontemporal vector loads
Simon Pilgrim [Tue, 7 Jun 2016 13:34:24 +0000 (13:34 +0000)]
[X86][SSE] Add general lowering of nontemporal vector loads

Currently the only way to use the (V)MOVNTDQA nontemporal vector loads instructions is through the int_x86_sse41_movntdqa style builtins.

This patch adds support for lowering nontemporal loads from general IR, allowing us to remove the movntdqa builtins in a future patch.

We currently still fold nontemporal loads into suitable instructions, we should probably look at removing this (and nontemporal stores as well) or at least make the target's folding implementation aware that its dealing with a nontemporal memory transaction.

There is also an issue that VMOVNTDQA only acts on 128-bit vectors on pre-AVX2 hardware - so currently a normal ymm load is still used on AVX1 targets.

Differential Review: http://reviews.llvm.org/D20965

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@272010 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[PM] Preserve GlobalsAA for SROA.
Davide Italiano [Tue, 7 Jun 2016 13:21:17 +0000 (13:21 +0000)]
[PM] Preserve GlobalsAA for SROA.

Differential Revision:  http://reviews.llvm.org/D21040

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@272009 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[Thumb-1] Add optimized constant materialization for integers [256..512)
James Molloy [Tue, 7 Jun 2016 13:10:14 +0000 (13:10 +0000)]
[Thumb-1] Add optimized constant materialization for integers [256..512)

We can materialize these integers using a MOV; ADDi8 pair.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@272007 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[AVX512] Fix load opcode for fast isel.
Igor Breger [Tue, 7 Jun 2016 13:08:45 +0000 (13:08 +0000)]
[AVX512] Fix load opcode for fast isel.

Differential Revision: http://reviews.llvm.org/D21067

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@272006 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[PowerPC] Support multiple return values with fast isel
Ulrich Weigand [Tue, 7 Jun 2016 12:48:22 +0000 (12:48 +0000)]
[PowerPC] Support multiple return values with fast isel

Using an LLVM IR aggregate return value type containing three
or more integer values causes an abort in the fast isel pass.

This patch adds two more registers to RetCC_PPC64_ELF_FIS to
allow returning up to four integers with fast isel, just the
same as is currently supported with regular isel (RetCC_PPC).

This is needed for Swift and (possibly) other non-clang frontends.

Fixes PR26190.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@272005 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[X86][SSE] Improved blend+zero target shuffle combining to use combined shuffle mask...
Simon Pilgrim [Tue, 7 Jun 2016 12:20:14 +0000 (12:20 +0000)]
[X86][SSE] Improved blend+zero target shuffle combining to use combined shuffle mask directly

We currently only combine to blend+zero if the target value type has 8 elements or less, but this was missing a lot of cases where the combined mask had been widened.

This change makes it so we use the combined mask to determine the blend value type, allowing us to catch more widened cases.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@272003 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[ARM] Shrink post-indexed LDR and STR to LDM/STM
James Molloy [Tue, 7 Jun 2016 12:13:34 +0000 (12:13 +0000)]
[ARM] Shrink post-indexed LDR and STR to LDM/STM

A Thumb-2 post-indexed LDR instruction such as:

  ldr.w r0, [r1], #4

Can be rewritten as:

  ldm.n r1!, {r0}

LDMs can be more expensive than LDRs on some cores, so this has been enabled only in minsize mode.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@272002 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[ARM] Transform LDMs into writeback form to save code size
James Molloy [Tue, 7 Jun 2016 11:47:24 +0000 (11:47 +0000)]
[ARM] Transform LDMs into writeback form to save code size

If we have an LDM that uses only low registers and doesn't write to its base register:

  ldm.w r0, {r1, r2, r3}

And that base register is dead after the LDM, then we can convert it to writeback form and use a narrow encoding:

  ldm.n r0!, {r1, r2, r3}

Obviously, this introduces a new register write and so can cause WAW hazards, so I've enabled it only in minsize mode. This is a code size trick that ARM Compiler 5 ("armcc") does that we don't.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@272000 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[llvm-readobj] - Teach llvm-readobj to dump .gnu.version_r sections
George Rimar [Tue, 7 Jun 2016 11:04:49 +0000 (11:04 +0000)]
[llvm-readobj] - Teach llvm-readobj to dump .gnu.version_r sections

SHT_GNU_verneed (.gnu.version_r) is a version dependency section.
It was the last symbol versioning relative section that was not dumped,
now it is.

Differential revision: http://reviews.llvm.org/D21024

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271998 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[ARM] Incorrect relocation type for Thumb2 B<cond>.w
Peter Smith [Tue, 7 Jun 2016 10:34:33 +0000 (10:34 +0000)]
[ARM] Incorrect relocation type for Thumb2 B<cond>.w

The Thumb2 conditional branch B<cond>.W has a different encoding (T3)
to the unconditional branch B.W (T4) as it needs to record <cond>.
As the encoding is different the B<cond>.W is given a different
relocation type.

ELF for the ARM Architecture 4.6.1.6 (Table-13) states that
R_ARM_THM_JUMP19 should be used for B<cond>.W. At present the
MC layer is using the R_ARM_THM_JUMP24 from B.W.

This change makes B<cond>.W use R_ARM_THM_JUMP19 and alters the
existing test that checks for R_ARM_THM_JUMP24 to expect
R_ARM_THM_JUMP19.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271997 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[InstCombine][AVX2] Add support for simplifying AVX2 per-element shifts to native...
Simon Pilgrim [Tue, 7 Jun 2016 10:27:15 +0000 (10:27 +0000)]
[InstCombine][AVX2] Add support for simplifying AVX2 per-element shifts to native shifts

Unlike native shifts, the AVX2 per-element shift instructions VPSRAV/VPSRLV/VPSLLV handle out of range shift values (logical shifts set the result to zero, arithmetic shifts splat the sign bit).

If the shift amount is constant we can sometimes convert these instructions to native shifts:

1 - if all shift amounts are in range then the conversion is trivial.
2 - out of range arithmetic shifts can be clamped to the (bitwidth - 1) (a legal shift amount) before conversion.
3 - logical shifts just return zero if all elements have out of range shift amounts.

In addition, UNDEF shift amounts are handled - either as an UNDEF shift amount in a native shift or as an UNDEF in the logical 'all out of range' zero constant special case for logical shifts.

Differential Revision: http://reviews.llvm.org/D19675

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271996 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[InstCombine][SSE] Add MOVMSK constant folding (PR27982)
Simon Pilgrim [Tue, 7 Jun 2016 08:18:35 +0000 (08:18 +0000)]
[InstCombine][SSE] Add MOVMSK constant folding (PR27982)

This patch adds support for folding undef/zero/constant inputs to MOVMSK instructions.

The SSE/AVX versions can be fully folded, but the MMX version can only handle undef inputs.

Differential Revision: http://reviews.llvm.org/D20998

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271990 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[AVX512] Allow avx2 and sse41 nontemporal load intrinsics to select EVEX encoded...
Craig Topper [Tue, 7 Jun 2016 07:27:57 +0000 (07:27 +0000)]
[AVX512] Allow avx2 and sse41 nontemporal load intrinsics to select EVEX encoded instructions when VLX is enabled.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271988 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[AVX512] Remove unnecessary mayLoad, mayStore, hasSidEffects flags from instructions...
Craig Topper [Tue, 7 Jun 2016 07:27:54 +0000 (07:27 +0000)]
[AVX512] Remove unnecessary mayLoad, mayStore, hasSidEffects flags from instructions that have patterns that imply them. Add the same set of flags to instructions that don't have patterns to imply them.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271987 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[AVX512] Add NoVLX to a couple patterns that have VLX equivalents. Ordering of the...
Craig Topper [Tue, 7 Jun 2016 07:27:51 +0000 (07:27 +0000)]
[AVX512] Add NoVLX to a couple patterns that have VLX equivalents. Ordering of the patterns in the .td file protects this, but its better to be explicit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271986 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[Kaleidoscope] Update Chapter 3 of the "Implementing a Language" tutorial to
Lang Hames [Tue, 7 Jun 2016 05:40:08 +0000 (05:40 +0000)]
[Kaleidoscope] Update Chapter 3 of the "Implementing a Language" tutorial to
take into account modernizations in r246002 and r270381.

Patch based on http://reviews.llvm.org/D20954 by Miroslav Hrncir.
Thanks Miroslav!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271985 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[pdb] Fix broken unit tests after r271982.
Zachary Turner [Tue, 7 Jun 2016 05:32:48 +0000 (05:32 +0000)]
[pdb] Fix broken unit tests after r271982.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271983 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[pdb] Use MappedBlockStream to parse the PDB directory.
Zachary Turner [Tue, 7 Jun 2016 05:28:55 +0000 (05:28 +0000)]
[pdb] Use MappedBlockStream to parse the PDB directory.

In order to efficiently write PDBs, we need to be able to make a
StreamWriter class similar to a StreamReader, which can transparently deal
with writing to discontiguous streams, and we need to use this for all
writing, similar to how we use StreamReader for all reading.

Most discontiguous streams are the typical numbered streams that appear in
a PDB file and are described by the directory, but the exception to this,
that until now has been parsed by hand, is the directory itself.
MappedBlockStream works by querying the directory to find out which blocks
a stream occupies and various other things, so naturally the same logic
could not possibly work to describe the blocks that the directory itself
resided on.

To solve this, I've introduced an abstraction IPDBStreamData, which allows
the client to query for the list of blocks occupied by the stream, as well
as the stream length. I provide two implementations of this: one which
queries the directory (for indexed streams), and one which queries the
super block (for the directory stream).

This has the side benefit of vastly simplifying the code to parse the
directory. Whereas before a mini state machine was rolled by hand, now we
simply use FixedStreamArray to read out the stream sizes, then build a
vector of FixedStreamArrays for the stream map, all in just a few lines of
code.

Reviewed By: ruiu
Differential Revision: http://reviews.llvm.org/D21046

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271982 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[LibFuzzer] s/dataflow sanitizer/DataflowSanitizer/
Dan Liew [Tue, 7 Jun 2016 04:44:49 +0000 (04:44 +0000)]
[LibFuzzer] s/dataflow sanitizer/DataflowSanitizer/

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271980 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[LibFuzzer] Disable building and running LSan tests on Apple platforms because LSan...
Dan Liew [Tue, 7 Jun 2016 04:44:39 +0000 (04:44 +0000)]
[LibFuzzer] Disable building and running LSan tests on Apple platforms because LSan is not currently supported.

Differential Revision: http://reviews.llvm.org/D20947

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271979 91177308-0d34-0410-b5e6-96231b3b80d8

8 years agoARM: correct TLS access on WoA
Saleem Abdulrasool [Tue, 7 Jun 2016 03:15:07 +0000 (03:15 +0000)]
ARM: correct TLS access on WoA

TLS access requires an offset from the TLS index.  The index itself is the
section-relative distance of the symbol.  For ARM, the relevant relocation
(IMAGE_REL_ARM_SECREL) is applied as a constant.  This means that the value may
not be an immediate and must be lowered into a constant pool.  This offset will
not be base relocated.  We were previously emitting the actual address of the
symbol which would be base relocated and would therefore be the vaue offset by
the ImageBase + TLS Offset.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271974 91177308-0d34-0410-b5e6-96231b3b80d8

8 years agoARM: clang-format a couple of switches, add comments
Saleem Abdulrasool [Tue, 7 Jun 2016 03:15:01 +0000 (03:15 +0000)]
ARM: clang-format a couple of switches, add comments

clang-format a couple of switches in preparation for a future change.  Add some
enumeration comments

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271973 91177308-0d34-0410-b5e6-96231b3b80d8

8 years agoARM: normalise space in the patterns
Saleem Abdulrasool [Tue, 7 Jun 2016 03:14:57 +0000 (03:14 +0000)]
ARM: normalise space in the patterns

Just adjust the whitespace for the selection patterns.  NFC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271972 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[sanitizer] Initial implementation of a Hardened Allocator
Kostya Serebryany [Tue, 7 Jun 2016 01:20:26 +0000 (01:20 +0000)]
[sanitizer] Initial implementation of a Hardened Allocator

Summary:
This is an initial implementation of a Hardened Allocator based on Sanitizer Common's CombinedAllocator.
It aims at mitigating heap based vulnerabilities by adding several features to the base allocator, while staying relatively fast.
The following were implemented:
- additional consistency checks on the allocation function parameters and on the heap chunks;
- use of checksum protected chunk header, to detect corruption;
- randomness to the allocator base;
- delayed freelist (quarantine), to mitigate use after free and overall determinism.
Additional mitigations are in the works.

Reviewers: eugenis, aizatsky, pcc, krasin, vitalybuka, glider, dvyukov, kcc

Subscribers: kubabrecka, filcab, llvm-commits

Differential Revision: http://reviews.llvm.org/D20084

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271968 91177308-0d34-0410-b5e6-96231b3b80d8

8 years agoAdd comments.
Rui Ueyama [Tue, 7 Jun 2016 00:59:04 +0000 (00:59 +0000)]
Add comments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271967 91177308-0d34-0410-b5e6-96231b3b80d8

8 years agoRe-land "[codeview] Emit information about global variables"
Reid Kleckner [Tue, 7 Jun 2016 00:02:03 +0000 (00:02 +0000)]
Re-land "[codeview] Emit information about global variables"

This reverts commit r271962 and reinstantes r271957.

MSVC's linker doesn't appear to like it if you have an empty symbol
substream, so only open a symbol substream if we're going to emit
something about globals into it.

Makes check-asan pass.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271965 91177308-0d34-0410-b5e6-96231b3b80d8

8 years agoTry one more time to pacify -Wpessimizing-move, MSVC, libstdc++4.7, and the world...
Reid Kleckner [Mon, 6 Jun 2016 23:46:14 +0000 (23:46 +0000)]
Try one more time to pacify -Wpessimizing-move, MSVC, libstdc++4.7, and the world without a named variable

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271964 91177308-0d34-0410-b5e6-96231b3b80d8

8 years agoRevert "Retry^2 "[llvm-profdata] Add option to ingest filepaths from a file""
Vedant Kumar [Mon, 6 Jun 2016 23:43:56 +0000 (23:43 +0000)]
Revert "Retry^2 "[llvm-profdata] Add option to ingest filepaths from a file""

This reverts commit r271953. It's still breaking on Windows, though the
list initialization issue is fixed:

http://bb.pgr.jp/builders/ninja-clang-i686-msc19-R/builds/3751

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271963 91177308-0d34-0410-b5e6-96231b3b80d8

8 years agoRevert "[codeview] Emit information about global variables"
Reid Kleckner [Mon, 6 Jun 2016 23:41:38 +0000 (23:41 +0000)]
Revert "[codeview] Emit information about global variables"

This reverts commit r271957, it broke check-asan on Windows.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271962 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[InstCombine] scalarizePHI should not assume the code it sees has been CSE'd
Michael Kuperstein [Mon, 6 Jun 2016 23:38:33 +0000 (23:38 +0000)]
[InstCombine] scalarizePHI should not assume the code it sees has been CSE'd

scalarizePHI only looked for phis that have exactly two uses - the "latch"
use, and an extract. Unfortunately, we can not assume all equivalent extracts
are CSE'd, since InstCombine itself may create an extract which is a duplicate
of an existing one. This extends it to handle several distinct extracts from
the same index.

This should fix at least some of the  performance regressions from PR27988.

Differential Revision: http://reviews.llvm.org/D20983

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271961 91177308-0d34-0410-b5e6-96231b3b80d8

8 years agoFix CRLF -> LF.
Rui Ueyama [Mon, 6 Jun 2016 23:35:52 +0000 (23:35 +0000)]
Fix CRLF -> LF.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271960 91177308-0d34-0410-b5e6-96231b3b80d8

8 years agoAttempt to work around lack of std::map::emplace in libstdc++4.7
Reid Kleckner [Mon, 6 Jun 2016 23:28:03 +0000 (23:28 +0000)]
Attempt to work around lack of std::map::emplace in libstdc++4.7

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271958 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[codeview] Emit information about global variables
Reid Kleckner [Mon, 6 Jun 2016 23:23:47 +0000 (23:23 +0000)]
[codeview] Emit information about global variables

This currently emits everything as S_GDATA32, which isn't right for
things like thread locals, but it's a start.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271957 91177308-0d34-0410-b5e6-96231b3b80d8

8 years agoVerifier: Simplify and fix issue where we were not verifying unmaterialized functions.
Peter Collingbourne [Mon, 6 Jun 2016 23:21:27 +0000 (23:21 +0000)]
Verifier: Simplify and fix issue where we were not verifying unmaterialized functions.

Arrange to call verify(Function &) on each function, followed by
verify(Module &), whether the verifier is being used from the pass or
from verifyModule(). As a side effect, this fixes an issue that caused
us not to call verify(Function &) on unmaterialized functions from
verifyModule().

Differential Revision: http://reviews.llvm.org/D21042

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271956 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[pdbdump] Verify the size of TPI hash records.
Rui Ueyama [Mon, 6 Jun 2016 23:19:23 +0000 (23:19 +0000)]
[pdbdump] Verify the size of TPI hash records.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271954 91177308-0d34-0410-b5e6-96231b3b80d8

8 years agoRetry^2 "[llvm-profdata] Add option to ingest filepaths from a file"
Vedant Kumar [Mon, 6 Jun 2016 23:17:22 +0000 (23:17 +0000)]
Retry^2 "[llvm-profdata] Add option to ingest filepaths from a file"

Changes since the initial commit:
- Normalize file paths read from the file to prevent Windows path
  separators from escaping parts of the path.
- Since we need to store the normalized file paths in WeightedFile,
  don't do tricky things to keep the source MemoryBuffer alive.
- Don't use list-initialization for a std::string in WeightedFile.

Differential Revision: http://reviews.llvm.org/D20980

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271953 91177308-0d34-0410-b5e6-96231b3b80d8

8 years agoRevert "Retry "[llvm-profdata] Add option to ingest filepaths from a file"
Vedant Kumar [Mon, 6 Jun 2016 23:01:42 +0000 (23:01 +0000)]
Revert "Retry "[llvm-profdata] Add option to ingest filepaths from a file"

This reverts commit r271949. It breaks the Windows build:

http://lab.llvm.org:8011/builders/clang-x64-ninja-win7/builds/12796

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271952 91177308-0d34-0410-b5e6-96231b3b80d8

8 years agoRetry "[llvm-profdata] Add option to ingest filepaths from a file"
Vedant Kumar [Mon, 6 Jun 2016 22:39:22 +0000 (22:39 +0000)]
Retry "[llvm-profdata] Add option to ingest filepaths from a file"

Changes since the initial commit:
- Normalize file paths read from the file to prevent Windows path
  separators from escaping parts of the path.
- Since we need to store the normalized file paths in WeightedFile,
  don't do tricky things to keep the source MemoryBuffer alive.

Differential Revision: http://reviews.llvm.org/D20980

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271949 91177308-0d34-0410-b5e6-96231b3b80d8

8 years agoVerifier: Remove dead code.
Peter Collingbourne [Mon, 6 Jun 2016 22:32:52 +0000 (22:32 +0000)]
Verifier: Remove dead code.

Remove previously unreachable code that verifies that a function definition has
an entry block. By definition, a function definition has at least one block.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271948 91177308-0d34-0410-b5e6-96231b3b80d8

8 years agoUpdating release notes for CMake version bump
Chris Bieneman [Mon, 6 Jun 2016 22:02:16 +0000 (22:02 +0000)]
Updating release notes for CMake version bump

CMake 3.4.3 is now required for building LLVM-based projects.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271945 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[pdbdump] Print section header flags.
Rui Ueyama [Mon, 6 Jun 2016 21:34:55 +0000 (21:34 +0000)]
[pdbdump] Print section header flags.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271943 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[yaml2obj] Get rid of MachO header union
Chris Bieneman [Mon, 6 Jun 2016 21:18:43 +0000 (21:18 +0000)]
[yaml2obj] Get rid of MachO header union

This is based on post-commit feedback from Sean Silva.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271942 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[llvm-pdbdump] Dump stream sizes and stream blocks to yaml.
Zachary Turner [Mon, 6 Jun 2016 20:37:17 +0000 (20:37 +0000)]
[llvm-pdbdump] Dump stream sizes and stream blocks to yaml.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271940 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[llvm-pdbdump] Dump MSF headers to YAML.
Zachary Turner [Mon, 6 Jun 2016 20:37:05 +0000 (20:37 +0000)]
[llvm-pdbdump] Dump MSF headers to YAML.

This is the simplest possible patch to get some kind of YAML
output.  All it dumps is the MSF header fields so that in
theory an empty MSF file could be reconstructed.

Reviewed By: ruiu, majnemer
Differential Revision: http://reviews.llvm.org/D20971

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271939 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[LibFuzzer] Provide stub implementation of __sanitizer_cov_trace_pc_indir
Dan Liew [Mon, 6 Jun 2016 20:27:09 +0000 (20:27 +0000)]
[LibFuzzer] Provide stub implementation of __sanitizer_cov_trace_pc_indir

Calls to this function are currently injected by the
``SanitizerCoverageModule`` pass when the both the ``indirect-calls``
and ``trace-pc`` sanitizer coverage options are enabled and the code
being instrumented has indirect calls. Previously because LibFuzzer did
not define this function this would lead to link errors when building
some of the tests on OSX.

Differential Revision: http://reviews.llvm.org/D20946

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271938 91177308-0d34-0410-b5e6-96231b3b80d8

8 years agoAMDGPU: Add function for getting instruction size
Matt Arsenault [Mon, 6 Jun 2016 20:10:33 +0000 (20:10 +0000)]
AMDGPU: Add function for getting instruction size

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271936 91177308-0d34-0410-b5e6-96231b3b80d8

8 years agoAMDGPU: Fix constantexpr addrspacecasts
Matt Arsenault [Mon, 6 Jun 2016 20:03:31 +0000 (20:03 +0000)]
AMDGPU: Fix constantexpr addrspacecasts

If we had a constant group address space cast the queue pointer
wasn't enabled for the function, resulting in a crash on noreg
later.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271935 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[PM] Preserve the correct set of analyses for GVN.
Davide Italiano [Mon, 6 Jun 2016 20:01:50 +0000 (20:01 +0000)]
[PM] Preserve the correct set of analyses for GVN.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271934 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[GVN] Switch dump() definition over to LLVM_DUMP_METHOD.
Davide Italiano [Mon, 6 Jun 2016 19:24:27 +0000 (19:24 +0000)]
[GVN] Switch dump() definition over to LLVM_DUMP_METHOD.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271932 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[LoopUnrollAnalyzer] Fix a crash in analyzeLoopUnrollCost.
Michael Zolotukhin [Mon, 6 Jun 2016 19:21:40 +0000 (19:21 +0000)]
[LoopUnrollAnalyzer] Fix a crash in analyzeLoopUnrollCost.

In some cases, when simplifying with SCEV, we might consider pointer values as
just usual integer values.  Thus, we might get a different type from what we
had originally in the map of simplified values, and hence we need to check
types before operating on the values.

This fixes PR28015.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271931 91177308-0d34-0410-b5e6-96231b3b80d8

8 years agoFix a test case. NFC.
Haicheng Wu [Mon, 6 Jun 2016 19:11:53 +0000 (19:11 +0000)]
Fix a test case. NFC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271930 91177308-0d34-0410-b5e6-96231b3b80d8

8 years agoReapply [LSR] Create fewer redundant instructions.
Geoff Berry [Mon, 6 Jun 2016 19:10:46 +0000 (19:10 +0000)]
Reapply [LSR] Create fewer redundant instructions.

Summary:
Fix LSRInstance::HoistInsertPosition() to check the original insert
position block first for a canonical insertion point that is dominated
by all inputs.  This leads to SCEV being able to reuse more instructions
since it currently tracks the instructions it creates for reuse by
keeping a table of <Value, insert point> pairs.

Originally reviewed in http://reviews.llvm.org/D18001

Reviewers: atrick

Subscribers: llvm-commits, mzolotukhin, mcrosier

Differential Revision: http://reviews.llvm.org/D18480

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271929 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[pdbdump] Print out New FPO stream contents.
Rui Ueyama [Mon, 6 Jun 2016 18:39:21 +0000 (18:39 +0000)]
[pdbdump] Print out New FPO stream contents.

The data strucutre in the new FPO stream is described in the
PE/COFF spec. There is one record per function if frame pointer
is omitted.

Differential Revision: http://reviews.llvm.org/D20999

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271926 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[MBP] Reduce code size by running tail merging in MBP.
Haicheng Wu [Mon, 6 Jun 2016 18:36:07 +0000 (18:36 +0000)]
[MBP] Reduce code size by running tail merging in MBP.

The code layout that TailMerging (inside BranchFolding) works on is not the
final layout optimized based on the branch probability. Generally, after
BlockPlacement, many new merging opportunities emerge.

This patch calls Tail Merging after MBP and calls MBP again if Tail Merging
merges anything.

Differential Revision: http://reviews.llvm.org/D20276

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271925 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[Kaleidoscope][BuildingAJIT] Fix hyphenation in chapter 2 title.
Lang Hames [Mon, 6 Jun 2016 18:35:44 +0000 (18:35 +0000)]
[Kaleidoscope][BuildingAJIT] Fix hyphenation in chapter 2 title.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271924 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[BranchFolding] Replace MachineBlockFrequencyInfo with MBFIWrapper. NFC.
Haicheng Wu [Mon, 6 Jun 2016 18:35:41 +0000 (18:35 +0000)]
[BranchFolding] Replace MachineBlockFrequencyInfo with MBFIWrapper. NFC.

Differential Revision: http://reviews.llvm.org/D20184

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271923 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[cpu-detection] Substantial refactor of Host CPU detection code (x86)
Alina Sbirlea [Mon, 6 Jun 2016 18:29:59 +0000 (18:29 +0000)]
[cpu-detection] Substantial refactor of Host CPU detection code (x86)

Summary:
Following D20970 (committed as r271726).
This is a substantial refactoring of the host CPU detection code.

There is no functionality change intended, but the changes are extensive.

Definitions of architecture types and subtypes are by no means exhaustive or
perfectly defined, but a fair starting point.
Suggestions for futher improvements are welcome.

Reviewers: llvm-commits

Differential Revision: http://reviews.llvm.org/D20988

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271921 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[Kaleidoscope][BuildingAJIT] More cleanup of Chapter 2.
Lang Hames [Mon, 6 Jun 2016 18:22:47 +0000 (18:22 +0000)]
[Kaleidoscope][BuildingAJIT] More cleanup of Chapter 2.

Streamline some wording, fix a bug in the markup for the layer interface table.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271917 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[Kaleidoscope][BuildingAJIT] Clean up sentence, remove comments from code block.
Lang Hames [Mon, 6 Jun 2016 18:07:23 +0000 (18:07 +0000)]
[Kaleidoscope][BuildingAJIT] Clean up sentence, remove comments from code block.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271913 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[InstCombine] limit icmp transform to ConstantInt (PR28011)
Sanjay Patel [Mon, 6 Jun 2016 16:56:57 +0000 (16:56 +0000)]
[InstCombine] limit icmp transform to ConstantInt (PR28011)

In r271810 ( http://reviews.llvm.org/rL271810 ), I loosened the check
above this to work for any Constant rather than ConstantInt. AFAICT,
that part makes sense if we can determine that the shrunken/extended
constant remained equal. But it doesn't make sense for this later
transform where we assume that the constant DID change.

This could assert for a ConstantExpr:
https://llvm.org/bugs/show_bug.cgi?id=28011

And it could be wrong for a vector as shown in the added regression test.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271908 91177308-0d34-0410-b5e6-96231b3b80d8

8 years agoregenerate checks
Sanjay Patel [Mon, 6 Jun 2016 16:03:06 +0000 (16:03 +0000)]
regenerate checks

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271904 91177308-0d34-0410-b5e6-96231b3b80d8

8 years agoregenerate checks
Sanjay Patel [Mon, 6 Jun 2016 15:55:00 +0000 (15:55 +0000)]
regenerate checks

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271903 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[AMDGPU][llvm-mc] v_cndmask_b32: src2 is mandatory; do not enforce VOP2 when src2...
Artem Tamazov [Mon, 6 Jun 2016 15:23:43 +0000 (15:23 +0000)]
[AMDGPU][llvm-mc] v_cndmask_b32: src2 is mandatory; do not enforce VOP2 when src2 == VCC.

Another step for unification llvm assembler/disassembler with sp3.
Besides, CodeGen output is a bit improved, thus changes in CodeGen tests.
Assembler/Disassembler tests updated/added.

Differential Revision: http://reviews.llvm.org/D20796

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271900 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[LAA] Use load and store vectors (NFC)
Matthew Simpson [Mon, 6 Jun 2016 14:15:41 +0000 (14:15 +0000)]
[LAA] Use load and store vectors (NFC)

Contributed-by: Aditya Kumar <hiraditya@msn.com>
Differential Revision: http://reviews.llvm.org/D20953

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271895 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[KNL] Fix UMULO lowering.
Igor Breger [Mon, 6 Jun 2016 12:24:52 +0000 (12:24 +0000)]
[KNL] Fix UMULO lowering.

Differential Revision: http://reviews.llvm.org/D21013

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271891 91177308-0d34-0410-b5e6-96231b3b80d8

8 years agoRemove dead function with incredibly broken assert.
Benjamin Kramer [Mon, 6 Jun 2016 12:10:42 +0000 (12:10 +0000)]
Remove dead function with incredibly broken assert.

Found by clang-tidy's misc-assert-side-effect.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271887 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[NFC] Silence gcc warning (-Wsign-compare)
Filipe Cabecinhas [Mon, 6 Jun 2016 10:49:56 +0000 (10:49 +0000)]
[NFC] Silence gcc warning (-Wsign-compare)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271882 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[AVX512] Remove masked palignr intrinsics and auto-upgrade them to native IR of vecto...
Craig Topper [Mon, 6 Jun 2016 06:12:54 +0000 (06:12 +0000)]
[AVX512] Remove masked palignr intrinsics and auto-upgrade them to native IR of vector shuffle and select.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271872 91177308-0d34-0410-b5e6-96231b3b80d8

8 years agoLLVM_BUILD_32_BITS: Add -m32 with CMAKE_C*_FLAGS. [CMP0056]
NAKAMURA Takumi [Mon, 6 Jun 2016 05:54:55 +0000 (05:54 +0000)]
LLVM_BUILD_32_BITS: Add -m32 with CMAKE_C*_FLAGS. [CMP0056]

With CMP0056, try_compile() uses also CMAKE_EXE_LINKER_FLAG.
It caused mismatch between CMAKE_CXX_FLAGS and CMAKE_EXE_LINKER_FLAGS, to fail to examine CXX_SUPPORTS_CXX11 with -m32.

FYI, before this, try_compile() tries without -m32 regardless of LLVM_BUILD_32_BITS.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271871 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[AVX512] Add PALIGNR shuffle lowering for v32i16 and v16i32.
Craig Topper [Mon, 6 Jun 2016 05:39:10 +0000 (05:39 +0000)]
[AVX512] Add PALIGNR shuffle lowering for v32i16 and v16i32.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271870 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[AVX512] Update tests to show shuffle decoding for vpshuflw/vpshufhw.
Craig Topper [Mon, 6 Jun 2016 05:39:07 +0000 (05:39 +0000)]
[AVX512] Update tests to show shuffle decoding for vpshuflw/vpshufhw.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271869 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[Kaleidoscope][BuildingAJIT] Split up the code-block describing the substitution
Lang Hames [Mon, 6 Jun 2016 05:07:52 +0000 (05:07 +0000)]
[Kaleidoscope][BuildingAJIT] Split up the code-block describing the substitution
of OptimizeLayer for CompileLayer in Chapter 2.

Hopefully this will read a little more clearly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271868 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[Kaleidoscope][BuildingAJIT] Fix code-blocks in Chapter 2.
Lang Hames [Mon, 6 Jun 2016 04:53:59 +0000 (04:53 +0000)]
[Kaleidoscope][BuildingAJIT] Fix code-blocks in Chapter 2.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271867 91177308-0d34-0410-b5e6-96231b3b80d8

8 years ago[Kaleidoscope][BuildingAJIT] Add tutorial text for Chapter 2.
Lang Hames [Mon, 6 Jun 2016 03:28:12 +0000 (03:28 +0000)]
[Kaleidoscope][BuildingAJIT] Add tutorial text for Chapter 2.

This chapter discusses IR optimizations, the ORC IRTransformLayer, and the ORC
layer concept itself.

The text is still pretty rough, but I think the main ideas are there. Feedback
is very welcome, as always.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271865 91177308-0d34-0410-b5e6-96231b3b80d8