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Reid Kleckner [Mon, 8 Jul 2013 15:31:29 +0000 (15:31 +0000)]
Use Clang's __has_* macros in Compiler.h to test for features
When targetting Windows, clang does not define __GNUC__, and as a result
we don't use our attributes with it. This leads to warnings about
unused functions that are already annotated with LLVM_ATTRIBUTE_UNUSED.
Rather than testing for __clang__, we can use its __has_attribute and
__has_builtin macros directlty.
While I'm here, conditionally define and use __GNUC_PREREQ for gcc
version checks. Spelling the check out with three comparisons is
verbose and error prone.
Reviewers: aaron.ballman
Differential Revision: http://llvm-reviews.chandlerc.com/D1080
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185831
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Rafael Espindola [Mon, 8 Jul 2013 15:22:09 +0000 (15:22 +0000)]
Create files with the correct permission instead of changing it afterwards.
Not intended functionality change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185830
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Ulrich Weigand [Mon, 8 Jul 2013 15:20:38 +0000 (15:20 +0000)]
[PowerPC] Support time base instructions
This adds support for the old-style time base instructions;
while new programs are supposed to use mfspr, the mftb instructions
are still supported and in use by existing assembler files.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185829
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Ulrich Weigand [Mon, 8 Jul 2013 14:49:37 +0000 (14:49 +0000)]
[PowerPC] Support basic compare mnemonics
This adds support for the basic mnemoics (with the L operand) for the
fixed-point compare instructions. These are defined as aliases for the
already existing CMPW/CMPD patterns, depending on the value of L.
This requires use of InstAlias patterns with immediate literal operands.
To make this work, we need two further changes:
- define a RegisterPrefix, because otherwise literals 0 and 1 would
be parsed as literal register names
- provide a PPCAsmParser::validateTargetOperandClass routine to
recognize immediate literals (like ARM does)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185826
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Manuel Klimek [Mon, 8 Jul 2013 14:44:57 +0000 (14:44 +0000)]
Fixes problem when calling llvm-ar from an unmodifiable directory.
This fixes a regression introduced by r185726: the new call to get
a unique file does not prepend the system temporary directory, so
we need to anchor on the file that the temporary file gets moved
to to ensure we're on the same file system.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185825
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Hal Finkel [Mon, 8 Jul 2013 14:40:04 +0000 (14:40 +0000)]
Improve the comment from r185794 (re: PromoteIntRes_BUILD_VECTOR)
In response to Duncan's review, I believe that the original comment was not as
clear as it could be. Hopefully, this is better.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185824
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Bill Schmidt [Mon, 8 Jul 2013 14:22:45 +0000 (14:22 +0000)]
[PowerPC] Fix PR16556 (handle undef ppcf128 in LowerFP_TO_INT).
PPCTargetLowering::LowerFP_TO_INT() expects its source operand to be
either an f32 or f64, but this is not checked. A long double
(ppcf128) operand will normally be custom-lowered to a conversion to
f64 in this context. However, this isn't the case for an UNDEF node.
This patch recognizes a ppcf128 as a legal source operand for
FP_TO_INT only if it's an undef, in which case it creates an undef of
the target type.
At some point we might want to do a wholesale custom lowering of
ISD::UNDEF when the type is ppcf128, but it's not really clear that's
a great idea, and probably more work than it's worth for a situation
that only arises in the case of a programming error. At this point I
think simple is best.
The test case comes from PR16556, and is a crash-test only.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185821
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Reid Kleckner [Mon, 8 Jul 2013 14:14:22 +0000 (14:14 +0000)]
Convert an OCaml binding grep test to FileCheck
I shaved this yak because I mistakenly thought that this was one of the
last grep tests. Turns out my search was skipping .ll files, for which
there are ~1200 more tests using grep.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185819
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David Majnemer [Mon, 8 Jul 2013 11:53:08 +0000 (11:53 +0000)]
InstCombine: Fold X-C1 <u 2 -> (X & -2) == C1
Back in r179493 we determined that two transforms collided with each
other. The fix back then was to reorder the transforms so that the
preferred transform would give it a try and then we would try the
secondary transform. However, it was noted that the best approach would
canonicalize one transform into the other, removing the collision and
allowing us to optimize IR given to us in that form.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185808
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Nico Rieck [Mon, 8 Jul 2013 11:20:11 +0000 (11:20 +0000)]
Reuse %rax after calling __chkstk on win64
Reapply this as I reverted the wrong commit.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185807
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Nico Rieck [Mon, 8 Jul 2013 11:19:44 +0000 (11:19 +0000)]
Revert "Proper va_arg/va_copy lowering on win64"
This reverts commit
2b52880592a525cfe04d8f9008a35da8c2ea94c3.
Needs review.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185806
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Richard Sandiford [Mon, 8 Jul 2013 09:55:36 +0000 (09:55 +0000)]
[SystemZ] Remove unwanted part from last commit
I was originally going to use MVC for memmove too, but that's less of
a clear win. Remove some accidental left-overs in the previous commit.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185804
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Richard Sandiford [Mon, 8 Jul 2013 09:35:23 +0000 (09:35 +0000)]
[SystemZ] Use MVC for memcpy
Use MVC for memcpy in cases where a single MVC is enough. Using MVC is
a win for longer copies too, but I'll leave that for later.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185802
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NAKAMURA Takumi [Mon, 8 Jul 2013 08:44:36 +0000 (08:44 +0000)]
llvm/test/CMakeLists.txt: Add llvm-cov in "check-clang".
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185801
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NAKAMURA Takumi [Mon, 8 Jul 2013 08:44:30 +0000 (08:44 +0000)]
llvm/test/CMakeLists.txt: Reformat LLVM_TEST_DEPENDS.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185800
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NAKAMURA Takumi [Mon, 8 Jul 2013 08:44:24 +0000 (08:44 +0000)]
llvm/test/Other/llvm-cov.test: It requires +Asserts to let XFAILed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185799
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Hal Finkel [Mon, 8 Jul 2013 06:16:58 +0000 (06:16 +0000)]
Fix PromoteIntRes_BUILD_VECTOR crash with i1 vectors
This fixes a bug (found by llvm-stress) in
DAGTypeLegalizer::PromoteIntRes_BUILD_VECTOR where it assumed that the result
type would always be larger than the original operands. This is not always
true, however, with boolean vectors. For example, promoting a node of type v8i1
(where the operands will be of type i32, the type to which i1 is promoted) will
yield a node with a result vector element type of i16 (and operands of type
i32). As a result, we cannot blindly assume that we can ANY_EXTEND the operands
to the result type.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185794
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Kai Nacke [Mon, 8 Jul 2013 04:48:34 +0000 (04:48 +0000)]
Revert: Fix wrong code offset for unwind code SET_FPREG.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185793
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Kai Nacke [Mon, 8 Jul 2013 04:46:55 +0000 (04:46 +0000)]
Revert: Generate IMAGE_REL_AMD64_ADDR32NB relocations for SEH data structures.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185791
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Kai Nacke [Mon, 8 Jul 2013 04:45:05 +0000 (04:45 +0000)]
Revert: Fix alignment of unwind data.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185790
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Kai Nacke [Mon, 8 Jul 2013 04:43:23 +0000 (04:43 +0000)]
Revert: Emit personality function and Dwarf EH data for Win64 SEH.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185788
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Hal Finkel [Mon, 8 Jul 2013 03:24:07 +0000 (03:24 +0000)]
Add the nearbyint -> FNEARBYINT mapping to BasicTargetTransformInfo
This fixes an oversight that Intrinsic::nearbyint was not being mapped to
ISD::FNEARBYINT (thus fixing the over-optimistic cost we were assigning to
nearbyint calls for some targets).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185783
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Michael Gottesman [Mon, 8 Jul 2013 02:13:47 +0000 (02:13 +0000)]
[objc-arc] Committed test for r185770 as per dblaikie's suggestion.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185782
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Nico Rieck [Mon, 8 Jul 2013 01:30:57 +0000 (01:30 +0000)]
Revert "Reuse %rax after calling __chkstk on win64"
This reverts commit
01f8d579f7672872324208ac5bc4ac311e81b22e.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185781
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Stephen Lin [Mon, 8 Jul 2013 00:37:03 +0000 (00:37 +0000)]
Remove trailing whitespace from SelectionDAG/*.cpp
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185780
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Nico Rieck [Sun, 7 Jul 2013 16:48:39 +0000 (16:48 +0000)]
Reuse %rax after calling __chkstk on win64
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185778
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Nadav Rotem [Sun, 7 Jul 2013 14:57:18 +0000 (14:57 +0000)]
Clear the builder insert point between tree-vectorization phases.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185777
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Nick Lewycky [Sun, 7 Jul 2013 10:15:16 +0000 (10:15 +0000)]
Eliminate trivial redundant loads across nocapture+readonly calls to uncaptured
pointer arguments.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185776
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Nick Lewycky [Sun, 7 Jul 2013 08:29:51 +0000 (08:29 +0000)]
Add missing per-argument doesNotAccessMemory accessors. No functionality change
since it has no callers today.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185775
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Nadav Rotem [Sun, 7 Jul 2013 06:57:07 +0000 (06:57 +0000)]
SLPVectorizer: Implement DCE as part of vectorization.
This is a complete re-write if the bottom-up vectorization class.
Before this commit we scanned the instruction tree 3 times. First in search of merge points for the trees. Second, for estimating the cost. And finally for vectorization.
There was a lot of code duplication and adding the DCE exposed bugs. The new design is simpler and DCE was a part of the design.
In this implementation we build the tree once. After that we estimate the cost by scanning the different entries in the constructed tree (in any order). The vectorization phase also works on the built tree.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185774
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Michael Gottesman [Sun, 7 Jul 2013 04:18:03 +0000 (04:18 +0000)]
[objc-arc] Remove the alias analysis part of r185764.
Upon further reflection, the alias analysis part of r185764 is not a safe
change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185770
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Michael Gottesman [Sun, 7 Jul 2013 01:52:55 +0000 (01:52 +0000)]
[objc-arc] Teach the ARC optimizer that objc_sync_enter/objc_sync_exit do not modify the ref count of an objc object and additionally are inert for modref purposes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185769
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Stephen Lin [Sat, 6 Jul 2013 21:44:25 +0000 (21:44 +0000)]
SelectionDAGBuilder: style fixes (add space between end parentheses and open brace)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185768
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Joey Gouly [Sat, 6 Jul 2013 20:50:18 +0000 (20:50 +0000)]
Add MC support for the v8fp instructions: vmaxnm and vminnm.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185767
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Benjamin Kramer [Sat, 6 Jul 2013 20:01:46 +0000 (20:01 +0000)]
COFFDumper: Print uint64_t with the right format string.
I wish we could typecheck llvm::format.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185766
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Michael Gottesman [Sat, 6 Jul 2013 18:43:05 +0000 (18:43 +0000)]
[objc-arc] When we initialize ARCRuntimeEntryPoints, make sure we reset all references to entrypoint declarations as well.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185764
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Nico Rieck [Sat, 6 Jul 2013 18:08:19 +0000 (18:08 +0000)]
Proper va_arg/va_copy lowering on win64
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185763
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Kai Nacke [Sat, 6 Jul 2013 17:17:31 +0000 (17:17 +0000)]
Emit personality function and Dwarf EH data for Win64 SEH.
Obviously the personality function should be emitted as language handler
instead of the hard coded _GCC_specific_handler. The language specific
data must be placed after the unwind information therefore it must not
be emitted into a separate section.
Reviewed by Charles Davis and Nico Rieck.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185761
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Kai Nacke [Sat, 6 Jul 2013 17:16:50 +0000 (17:16 +0000)]
Fix alignment of unwind data.
For alignment purposes, the instruction array will always have an even
number of entries, with the final entry potentially unused (in which
case the array will be one longer than indicated by the count of unwind
codes field).
Reviewed by Charles Davis and Nico Rieck.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185760
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Kai Nacke [Sat, 6 Jul 2013 17:16:12 +0000 (17:16 +0000)]
Generate IMAGE_REL_AMD64_ADDR32NB relocations for SEH
data structures.
The Win64 EH data structures must be of type IMAGE_REL_AMD64_ADDR32NB
instead of IMAGE_REL_AMD64_ADDR32. This is easiely achieved by adding
the VK_COFF_IMGREL32 modifier to the symbol reference.
Change also references to start and end of the SEH range of a function
as offsets to start of the function.
Reviewed by Charles Davis and Nico Rieck.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185759
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Kai Nacke [Sat, 6 Jul 2013 17:15:36 +0000 (17:15 +0000)]
Fix wrong code offset for unwind code SET_FPREG.
The code offset for unwind code SET_FPREG is wrong because it is set
to constant 0. The fix is to do the same as for the other unwind
codes: emit a label and later the absolute difference between the
label and the begin of the prologue.
Also enables the failing test case MC/COFF/seh.s
Reviewed by Charles Davis and Nico Rieck.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185758
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Benjamin Kramer [Sat, 6 Jul 2013 15:10:13 +0000 (15:10 +0000)]
Reassociate: Remove unnecessary default operator=.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185757
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Benjamin Kramer [Sat, 6 Jul 2013 14:05:09 +0000 (14:05 +0000)]
DAGCombiner: Don't drop extension behavior when shrinking a load when unsafe.
ReduceLoadWidth unconditionally drops extensions from loads. Limit it to the
case when all of the bits the extension would otherwise produce are dropped by
the shrink. It would be possible to shrink the load in more cases by merging
the extensions, but this isn't trivial and a very rare case. I left a TODO for
that case.
Fixes PR16551.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185755
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Tim Northover [Sat, 6 Jul 2013 12:58:45 +0000 (12:58 +0000)]
Stop putting operations after a tail call.
This prevents the emission of DAG-generated vreg definitions after a
tail call be dropping them entirely (on the grounds that nothing could
use them anyway, and they interfere with O0 CodeGen).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185754
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Nico Rieck [Sat, 6 Jul 2013 12:13:10 +0000 (12:13 +0000)]
MC: Implement COFF .linkonce directive
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185753
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Michael Gottesman [Sat, 6 Jul 2013 02:39:51 +0000 (02:39 +0000)]
[llvm-ar] Added llvm_unreachable to quiet -Wreturn-type warnings.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185751
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David Majnemer [Sat, 6 Jul 2013 02:24:59 +0000 (02:24 +0000)]
isKnownToBeAPowerOfTwo: Fix a typo in a comment
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185748
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Michael Gottesman [Sat, 6 Jul 2013 02:18:56 +0000 (02:18 +0000)]
[objc-arc] Performed some small cleanups in ARCRuntimeEntryPoints and added an llvm_unreachable after the switch to quiet -Wreturn_type errors.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185746
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Michael Gottesman [Sat, 6 Jul 2013 01:57:32 +0000 (01:57 +0000)]
[objc-arc] Renamed Module => TheModule in ARCRuntimeEntryPoints. Also did some small cleanups.
This fixes an issue that came up due to -fpermissive on the bots.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185744
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Michael Gottesman [Sat, 6 Jul 2013 01:41:35 +0000 (01:41 +0000)]
Removed trailing whitespace.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185743
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Michael Gottesman [Sat, 6 Jul 2013 01:39:26 +0000 (01:39 +0000)]
[objc-arc] Updated ObjCARCContract to use ARCRuntimeEntryPoints.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185742
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Michael Gottesman [Sat, 6 Jul 2013 01:39:23 +0000 (01:39 +0000)]
[objc-arc] Updated ObjCARCOpts to use ARCRuntimeEntryPoints.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185741
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Michael Gottesman [Sat, 6 Jul 2013 01:39:18 +0000 (01:39 +0000)]
[objc-arc] Refactor runtime entrypoint declaration entrypoint creation.
This is the first patch in a series of 3 patches which clean up how we create
runtime function declarations in the ARC optimizer when they do not exist
already in the IR.
Currently we have a bunch of duplicated code in ObjCARCOpts, ObjCARCContract
that does this. This patch refactors that code into a separate class called
ARCRuntimeEntryPoints which lazily creates the declarations for said
entrypoints.
The next two patches will consist of the work of refactoring
ObjCARCContract/ObjCARCOpts to use this new code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185740
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Nick Lewycky [Sat, 6 Jul 2013 01:04:47 +0000 (01:04 +0000)]
Fix language.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185739
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Nick Lewycky [Sat, 6 Jul 2013 00:59:28 +0000 (00:59 +0000)]
Fix annotation of unlink. Should fix builder.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185738
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David Majnemer [Sat, 6 Jul 2013 00:54:07 +0000 (00:54 +0000)]
InstCombine: typo in or_icmp_eq_B_0_icmp_ult_A_B test
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185737
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Nick Lewycky [Sat, 6 Jul 2013 00:29:58 +0000 (00:29 +0000)]
Extend 'readonly' and 'readnone' to work on function arguments as well as
functions. Make the function attributes pass add it to known library functions
and when it can deduce it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185735
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Jakob Stoklund Olesen [Fri, 5 Jul 2013 23:48:07 +0000 (23:48 +0000)]
Use modern API to avoid exposing LiveInterval internals.
No functional change intended.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185733
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Jakob Stoklund Olesen [Fri, 5 Jul 2013 23:04:55 +0000 (23:04 +0000)]
Remove dead function.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185731
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Rafael Espindola [Fri, 5 Jul 2013 22:32:33 +0000 (22:32 +0000)]
Fix windows build.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185730
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Michael Gottesman [Fri, 5 Jul 2013 22:24:06 +0000 (22:24 +0000)]
[TRE] Combined another test into basic.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185729
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Rafael Espindola [Fri, 5 Jul 2013 21:19:35 +0000 (21:19 +0000)]
Remove unique_file now that it is unused.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185728
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Rafael Espindola [Fri, 5 Jul 2013 21:01:08 +0000 (21:01 +0000)]
Add a createUniqueFile function and switch llvm's users of unique_file.
This function is complementary to createTemporaryFile. It handles the case were
the unique file is *not* temporary: we will rename it in the end. Since we
will rename it, the file has to be in the same filesystem as the final
destination and we don't prepend the system temporary directory.
This has a small semantic difference from unique_file: the default mode is 0666.
This matches the behavior of most unix tools. For example, with this change
lld now produces files with the same permissions as ld. I will add a test
of this change when I port clang over to createUniqueFile (next commit).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185726
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Michael Gottesman [Fri, 5 Jul 2013 20:45:13 +0000 (20:45 +0000)]
[TRE] Merged several tests into the the test basic.ll.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185723
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Rafael Espindola [Fri, 5 Jul 2013 20:14:52 +0000 (20:14 +0000)]
Use sys::fs::createTemporaryFile.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185719
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Rafael Espindola [Fri, 5 Jul 2013 19:56:49 +0000 (19:56 +0000)]
Add a higher level createTemporaryFile function.
This function is inspired by clang's Driver::GetTemporaryPath. It hides the
pattern used for uniquing and requires simple file names that are always
placed in the system temporary directory.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185716
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Arnold Schwaighofer [Fri, 5 Jul 2013 18:57:49 +0000 (18:57 +0000)]
ARM: Add a pack pattern for matching arithmetic shift right
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185714
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Arnold Schwaighofer [Fri, 5 Jul 2013 18:28:39 +0000 (18:28 +0000)]
ARM: Fix incorrect pack pattern
A "pkhtb x, x, y asr #num" uses the lower 16 bits of "y asr #num" and packs them
in the bottom half of "x". An arithmetic and logic shift are only equivalent in
this context if the shift amount is 16. We would be shifting in ones into the
bottom 16bits instead of zeros if "y" is negative.
radar://
14338767
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185712
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Sylvestre Ledru [Fri, 5 Jul 2013 15:58:12 +0000 (15:58 +0000)]
Remove a useless declarations (found by scan-build)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185709
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Richard Sandiford [Fri, 5 Jul 2013 14:38:48 +0000 (14:38 +0000)]
[SystemZ] Remove no-op MVCs
The stack coloring pass has code to delete stores and loads that become
trivially dead after coloring. Extend it to cope with single instructions
that copy from one frame index to another.
The testcase happens to show an example of this kicking in at the moment.
It did occur in Real Code too though.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185705
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Richard Sandiford [Fri, 5 Jul 2013 14:31:24 +0000 (14:31 +0000)]
[SystemZ] Remove redundant frame MMOs
This fixes foldMemoryOperandImpl() so that it doesn't create duplicated
frame MMOs. I hadn't realized when writing r185434 that it was the caller's
responsibility to add these.
No behavioural change intended.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185704
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Richard Sandiford [Fri, 5 Jul 2013 14:24:47 +0000 (14:24 +0000)]
Fix double renaming bug in stack coloring pass
The stack coloring pass renumbered frame indexes with a loop of the form:
for each frame index FI
for each instruction I that uses FI
for each use of FI in I
rename FI to FI'
This caused problems if an instruction used two frame indexes F0 and F1
and if F0 was renamed to F1 and F1 to F2. The first time we visited the
instruction we changed F0 to F1, then we changed both F1s to F2.
In other words, the problem was that SSRefs recorded which instructions
used an FI, but not which MachineOperands and MachineMemOperands within
that instruction used it.
This is easily fixed for MachineOperands by walking the instructions
once and processing each operand in turn. There's already a loop to
do that for dead store elimination, so it seemed more efficient to
fuse the two at the block level.
MachineMemOperands are more tricky because they can be shared between
instructions. The patch handles them by making SSRefs an array of
MachineMemOperands rather than an array of MachineInstrs. We might end
up processing the same MachineMemOperand twice, but that's OK because
we always know from the SSRefs index what the original frame index was.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185703
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Richard Sandiford [Fri, 5 Jul 2013 14:02:01 +0000 (14:02 +0000)]
[SystemZ] Enable the use of MVC for frame-to-frame spills
...now that the problem that prompted the restriction has been fixed.
The original spill-02.py was a compromise because at the time I couldn't
find an example that actually failed without the two scavenging slots.
The version included here did.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185701
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Ulrich Weigand [Fri, 5 Jul 2013 13:49:46 +0000 (13:49 +0000)]
[PowerPC] Add some special @got@tprel fixup cases
When a target@got@tprel or target@got@tprel@l symbol variant is used in
a fixup_ppc_half16 (*not* fixup_ppc_half16ds) context, we currently fail,
since the corresponding R_PPC64_GOT_TPREL16 / R_PPC64_GOT_TPREL16_LO
relocation types do not exist.
However, since such symbol variants resolve to GOT offsets which are
always 4-aligned, we can simply instead use the _DS variants of the
relocation types, which *do* exist.
The same applies for the @got@dtprel variants.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185700
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Richard Sandiford [Fri, 5 Jul 2013 13:11:52 +0000 (13:11 +0000)]
[SystemZ] Allocate a second register scavenging slot
This is another prerequisite for frame-to-frame MVC copies.
I'll commit the patch that makes use of the slot separately.
The downside of trying to test many corner cases with each of the
available addressing modes is that a fair few tests need to account
for the new frame layout. I do still think it's useful to have all
these tests though, since it's something that wouldn't get much coverage
otherwise.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185698
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Rafael Espindola [Fri, 5 Jul 2013 13:03:07 +0000 (13:03 +0000)]
Don't create an archive if, for example, we are asked to print the index.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185697
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Richard Sandiford [Fri, 5 Jul 2013 12:55:00 +0000 (12:55 +0000)]
[SystemZ] Clean up register scavenging code
SystemZ wants normal register scavenging slots, as close to the stack or
frame pointer as possible. The only reason it was using custom code was
because PrologEpilogInserter assumed an x86-like layout, where the frame
pointer is at the opposite end of the frame from the stack pointer.
This meant that when frame pointer elimination was disabled,
the slots ended up being as close as possible to the incoming
stack pointer, which is the opposite of what we want on SystemZ.
This patch adds a new knob to say which layout is used and converts
SystemZ to use target-independent scavenging slots. It's one of the pieces
needed to support frame-to-frame MVCs, where two slots might be required.
The ABI requires us to allocate 160 bytes for calls, so one approach
would be to use that area as temporary spill space instead. It would need
some surgery to make sure that the slot isn't live across a call though.
I stuck to the "isFPCloseToIncomingSP - ..." style comment on the
"do what the surrounding code does" principle. The FP case is already
covered by several Systemz/frame-* tests, which fail without the
PrologueEpilogueInserter change, so no new ones are needed.
No behavioural change intended.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185696
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Rafael Espindola [Fri, 5 Jul 2013 12:44:49 +0000 (12:44 +0000)]
Use simpler version of exists.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185695
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Ulrich Weigand [Fri, 5 Jul 2013 12:33:03 +0000 (12:33 +0000)]
[PowerPC] Make test case buildable with GNU as
The ppc64-fixups.s test currently fails to build with GNU as, since it
does not support plain symbols as arguments to li/lis. Rewrite the test
for R_PPC64_ADDR16 and R_PPC64_REL16 to use lwz instead.
Allowing the test case to be built with both LLVM and GNU as makes it
easier to spot unwanted difference in the output.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185694
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Ulrich Weigand [Fri, 5 Jul 2013 12:22:36 +0000 (12:22 +0000)]
[PowerPC] Support @tls in the asm parser
This adds support for the last missing construct to parse TLS-related
assembler code:
add 3, 4, symbol@tls
The ADD8TLS currently hard-codes the @tls into the assembler string.
This cannot be handled by the asm parser, since @tls is parsed as
a symbol variant. This patch changes ADD8TLS to have the @tls suffix
printed as symbol variant on output too, which allows us to remove
the isCodeGenOnly marker from ADD8TLS. This in turn means that we
can add a AsmOperand to accept @tls marked symbols on input.
As a side effect, this means that the fixup_ppc_tlsreg fixup type
is no longer necessary and can be merged into fixup_ppc_nofixup.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185692
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Rafael Espindola [Fri, 5 Jul 2013 12:12:43 +0000 (12:12 +0000)]
Remove NoOperation.
parseCommandLine prints and error and exists if no operation is specified, so
it never returns NoOperation.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185691
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Benjamin Kramer [Fri, 5 Jul 2013 10:20:57 +0000 (10:20 +0000)]
Simplify code. No functionality change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185689
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Joey Gouly [Fri, 5 Jul 2013 10:19:40 +0000 (10:19 +0000)]
PR16490: fix a crash in ARMDAGToDAGISel::SelectInlineAsm.
In the SelectionDAG immediate operands to inline asm are constructed as
two separate operands. The first is a constant of value InlineAsm::Kind_Imm
and the second is a constant with the value of the immediate.
In ARMDAGToDAGISel::SelectInlineAsm, if we reach an operand of Kind_Imm we
should skip over the next operand too.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185688
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Rafael Espindola [Fri, 5 Jul 2013 04:19:32 +0000 (04:19 +0000)]
Don't treat bitcode files specially in llvm-ar.
We really want bitcode files to behave as regular object files in archives, so
we don't need to track that a member is bitcode.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185681
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Rafael Espindola [Fri, 5 Jul 2013 03:35:15 +0000 (03:35 +0000)]
Use the raw member names in Archive::Archive.
This a bit more efficient and avoids having a function that uses the string
table being called by a function that searches for it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185680
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Rafael Espindola [Fri, 5 Jul 2013 02:50:03 +0000 (02:50 +0000)]
Add a --crash option to not.
Now the two possible uses of not are
* not cmd
Will return true if cmd doesn't crash and returns false.
* not --crash cmd
Will return true if cmd crashes.
It will be used/tested in a followup commit for the clang crash recovery
testing.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185678
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David Majnemer [Fri, 5 Jul 2013 00:31:17 +0000 (00:31 +0000)]
InstCombine: (icmp eq B, 0) | (icmp ult A, B) -> (icmp ule A, B-1)
This transform allows us to turn IR that looks like:
%1 = icmp eq i64 %b, 0
%2 = icmp ult i64 %a, %b
%3 = or i1 %1, %2
ret i1 %3
into:
%0 = add i64 %b, -1
%1 = icmp uge i64 %0, %a
ret i1 %1
which means we go from lowering:
cmpq %rsi, %rdi
setb %cl
testq %rsi, %rsi
sete %al
orb %cl, %al
ret
to lowering:
decq %rsi
cmpq %rdi, %rsi
setae %al
ret
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185677
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Ahmed Bougacha [Thu, 4 Jul 2013 23:20:12 +0000 (23:20 +0000)]
Remove use of asymmetric std::lower_bound comparator.
VS 2008 doesn't like it when in debug mode.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185676
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David Blaikie [Thu, 4 Jul 2013 23:15:18 +0000 (23:15 +0000)]
DebugInfo: Consider global variables without locations to be valid
We were being a bit too aggresive here in classifying global variables
with no global reference or constant value to be invalid - this would
cause LLVM to not emit the DWARF description of the global variable if
it had been optimized away, which isn't helpful for users who might
benefit from the global variable's description even if there's no
location information.
This also fixes a crasher issue here that I was unable to reduce a test
case for - involving a using decl (& subsequent
DW_TAG_imported_declaration ) of such a global variable that, once
optimized away, would crash when an attempt to emit the imported
declaration was made.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185675
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Rafael Espindola [Thu, 4 Jul 2013 22:15:33 +0000 (22:15 +0000)]
Use a OwningPtr instead of a manual delete.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185673
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Nico Rieck [Thu, 4 Jul 2013 21:37:26 +0000 (21:37 +0000)]
Initialize object file info before output streamer
r179494 switched to using the object file info to retrieve the default text
section for some MC streamers. It is possible that initializing an MC
streamer can request sections before the object file info is initialized
when the AutoInitSections flag is set on the streamer.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185670
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Nico Rieck [Thu, 4 Jul 2013 21:32:07 +0000 (21:32 +0000)]
MC: Add .section directive to COFF
Supports GAS flags "abdnrswxy". No support for alignment or subsections.
Fixes PR16366.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185669
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David Majnemer [Thu, 4 Jul 2013 21:17:49 +0000 (21:17 +0000)]
InstCombine: Reimplementation of visitUDivOperand
This transform was originally added in r185257 but later removed in
r185415. The original transform would create instructions speculatively
and then discard them if the speculation was proved incorrect. This has
been replaced with a scheme that splits the transform into two parts:
preflight and fold. While we preflight, we build up fold actions that
inform the folding stage on how to act.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185667
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Rafael Espindola [Thu, 4 Jul 2013 19:40:23 +0000 (19:40 +0000)]
Add support for archives with no symbol table or string table.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185664
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Rafael Espindola [Thu, 4 Jul 2013 19:20:00 +0000 (19:20 +0000)]
Fix leak. Should bring back the valgrind bot.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185663
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Ulrich Weigand [Thu, 4 Jul 2013 18:28:46 +0000 (18:28 +0000)]
[PowerPC] Implement writeNopData
This implements a proper PPCAsmBackend::writeNopData routine
that actually writes PowerPC nop instructions.
This fixes the last remaining difference in object file output
(text section) between the integrated assembler and GNU as
that I've seen anywhere.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185662
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Rafael Espindola [Thu, 4 Jul 2013 17:21:01 +0000 (17:21 +0000)]
Add 'not' in front of a command that is expected to fail.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185659
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Aaron Ballman [Thu, 4 Jul 2013 17:05:21 +0000 (17:05 +0000)]
Changing long to int for consistency.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185656
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Joey Gouly [Thu, 4 Jul 2013 15:58:38 +0000 (15:58 +0000)]
Remove an unneeded call to 'UpdateThumbVFPPredicate', spotted by Amaury.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185651
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Joey Gouly [Thu, 4 Jul 2013 14:57:20 +0000 (14:57 +0000)]
Add support for MC assembling and disassembling of vsel{ge, gt, eq, vs} instructions.
This adds a new decoder table/namespace 'VFPV8', as these instructions have their
top 4 bits as 0b1111, while other Thumb instructions have 0b1110.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185642
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