OSDN Git Service
Dan Gohman [Wed, 23 Sep 2009 21:07:02 +0000 (21:07 +0000)]
Use getStoreSize() instead of getStoreSizeInBits()/8.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82656
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Dan Gohman [Wed, 23 Sep 2009 21:06:36 +0000 (21:06 +0000)]
Spruce up some comments.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82655
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Dan Gohman [Wed, 23 Sep 2009 21:02:20 +0000 (21:02 +0000)]
Rename several variables from EVT to more descriptive names, now that EVT
is also the name of their type, as declarations like "EVT EVT" look
really odd.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82654
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Dan Gohman [Wed, 23 Sep 2009 20:59:10 +0000 (20:59 +0000)]
Add an EVT::getStoreSize function, like getStoreSizeInBits but in bytes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82653
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Jakob Stoklund Olesen [Wed, 23 Sep 2009 20:57:55 +0000 (20:57 +0000)]
Fix verification of explicit operands.
The machine code verifier did not check for explicit operands correctly. It
used MachineInstr::getNumExplicitOperands, but that method may cheat and use
the declared count in the TargetInstrDesc.
Now we check the explicit operands one at a time in visitMachineOperand.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82652
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Bob Wilson [Wed, 23 Sep 2009 20:57:02 +0000 (20:57 +0000)]
Remove BlackfinRegisterInfo::getFrameIndexOffset since it is the same as the
default implementation. Update comment on the default version, which made it
sound like most targets override it. Currently only X86 and SystemZ override
this method.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82651
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Dan Gohman [Wed, 23 Sep 2009 20:40:16 +0000 (20:40 +0000)]
Correct a comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82648
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Devang Patel [Wed, 23 Sep 2009 20:33:51 +0000 (20:33 +0000)]
Delete attached metadata when an instruction is deleted.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82647
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Anton Korobeynikov [Wed, 23 Sep 2009 19:04:09 +0000 (19:04 +0000)]
ARM does not support offset folding (yet). Disable it for now.
This fixes PR5031. Unfortunately, there is no small testcase :(
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82643
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Bob Wilson [Wed, 23 Sep 2009 18:53:19 +0000 (18:53 +0000)]
Edit a comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82641
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Devang Patel [Wed, 23 Sep 2009 18:32:25 +0000 (18:32 +0000)]
Do not leave behind metadata while cloning an instruction.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82638
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Evan Cheng [Wed, 23 Sep 2009 18:20:27 +0000 (18:20 +0000)]
Add nounwind.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82637
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Devang Patel [Wed, 23 Sep 2009 17:20:43 +0000 (17:20 +0000)]
s/*Location/*DebugLocation/g
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82635
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Jeffrey Yasskin [Wed, 23 Sep 2009 17:05:42 +0000 (17:05 +0000)]
PR4047: Permit configure --enable-targets=host,cpp for example. "host" has the
same effect that "host-only" used to have, but can be combined with other
targets. host-only is still available as a synonym but no longer documented.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82634
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David Goodwin [Wed, 23 Sep 2009 16:35:25 +0000 (16:35 +0000)]
Fix bug in kill flag updating for post-register-allocation scheduling. When the kill flag of a superreg needs to be cleared because there are one or more subregs live, we instead add implicit-defs of those subregs and leave the kill flag on the superreg. This allows us to end the live-range of the superreg without ending the live-ranges of the subregs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82629
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Benjamin Kramer [Wed, 23 Sep 2009 11:48:57 +0000 (11:48 +0000)]
Fix a struct/class mismatch.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82622
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John McCall [Wed, 23 Sep 2009 06:53:51 +0000 (06:53 +0000)]
Make the type traits for a const pointer defer to those for a unqualified
pointer, instead of providing independent values modelled on the default
implementation.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82620
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Evan Cheng [Wed, 23 Sep 2009 06:28:31 +0000 (06:28 +0000)]
Fix PR5024. LiveVariables physical register defs should *commit* only after all
of the defs are processed.
Also fix a implicit_def propagation bug: a implicit_def of a physical register
should be applied to uses of the sub-registers.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82616
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Evan Cheng [Wed, 23 Sep 2009 05:23:19 +0000 (05:23 +0000)]
Fix a obvious logic error.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82610
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Gabor Greif [Wed, 23 Sep 2009 02:46:12 +0000 (02:46 +0000)]
pretty mechanical changes to match coding guidelines (blessed by sabre on IRC)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82603
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Chris Lattner [Wed, 23 Sep 2009 02:03:49 +0000 (02:03 +0000)]
errorstr can be null, don't unconditionally set it. Only report that
"the jit has not been linked in" if the interpreter failed.
This fixes a unit test failure.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82601
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Chris Lattner [Wed, 23 Sep 2009 01:46:04 +0000 (01:46 +0000)]
Make EngineBuilder return more error codes, by KS Sreeram.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82600
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Dan Gohman [Wed, 23 Sep 2009 01:33:16 +0000 (01:33 +0000)]
Give MachineMemOperand an operator<<, factoring out code from
two different places for printing MachineMemOperands.
Drop the virtual from Value::dump and instead give Value a
protected virtual hook that can be overridden by subclasses
to implement custom printing. This lets printing be more
consistent, and simplifies printing of PseudoSourceValue
values.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82599
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Dan Gohman [Wed, 23 Sep 2009 01:29:41 +0000 (01:29 +0000)]
Fix X86's unfoldMemoryOperand to properly handle MachineMemOperands.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82597
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Mike Stump [Wed, 23 Sep 2009 00:13:30 +0000 (00:13 +0000)]
This is overly constraining with respect to clang.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82591
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Erick Tryzelaar [Tue, 22 Sep 2009 21:15:19 +0000 (21:15 +0000)]
Add examples for Kaleidoscope chapters 2 through 6.
Conflicts:
examples/Makefile
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82574
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Erick Tryzelaar [Tue, 22 Sep 2009 21:15:00 +0000 (21:15 +0000)]
Rename Kaleidoscope to show that it's for Chapter 7 of the tutorial.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82573
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Erick Tryzelaar [Tue, 22 Sep 2009 21:14:49 +0000 (21:14 +0000)]
Sync c++ kaleidoscope tutorial with test.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82572
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Devang Patel [Tue, 22 Sep 2009 20:56:31 +0000 (20:56 +0000)]
Add SetLocation() to allow IRBuilder user to set location info for an instruction already created.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82570
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Devang Patel [Tue, 22 Sep 2009 20:54:13 +0000 (20:54 +0000)]
Check exisiting dbg MDKind first.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82568
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Victor Hernandez [Tue, 22 Sep 2009 18:50:03 +0000 (18:50 +0000)]
No need to verify that malloc's return type is i8*.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82561
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David Goodwin [Tue, 22 Sep 2009 16:47:52 +0000 (16:47 +0000)]
Use early returns.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82554
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Daniel Dunbar [Tue, 22 Sep 2009 16:33:42 +0000 (16:33 +0000)]
Revert "Don't allow formatted_ostream to be unbuffered, even if its underlying
buffer", while we work out a solution.
Dan convinced me that making debugging annoying for him is worse than 10x being
slower for me. :)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82553
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Daniel Dunbar [Tue, 22 Sep 2009 16:10:35 +0000 (16:10 +0000)]
... missed hiding a variable for MSVC only.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82552
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Daniel Dunbar [Tue, 22 Sep 2009 15:58:35 +0000 (15:58 +0000)]
Hide MSVC specific CRT interaction behind _MSC_VER.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82551
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Mikhail Glushenkov [Tue, 22 Sep 2009 15:40:32 +0000 (15:40 +0000)]
Remove the GetProcessId() call from Win32/Program.inc, take 2.
GetProcessId() was introduced only in Windows XP, and we want to support earlier
versions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82548
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Daniel Dunbar [Tue, 22 Sep 2009 10:30:34 +0000 (10:30 +0000)]
Fix commento.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82544
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Daniel Dunbar [Tue, 22 Sep 2009 09:50:38 +0000 (09:50 +0000)]
lit: When executing shell scripts internally, don't allow piped stderr on any
commands except the last one, instead redirect the stderr to a temporary
file. This sidesteps a potential deadlocking issue.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82538
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Daniel Dunbar [Tue, 22 Sep 2009 09:50:28 +0000 (09:50 +0000)]
Add a magic LLVM_DISABLE_CRT_DEBUG environment variable which we check in RegisterHandler and use to disable the Win32 crash dialogs. These are a major blocker to any kind of automated testing.
Also, tweak the 'lit' test runner to set this variable unconditionally.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82537
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Evan Cheng [Tue, 22 Sep 2009 08:47:59 +0000 (08:47 +0000)]
Forgot this.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82536
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Evan Cheng [Tue, 22 Sep 2009 08:34:46 +0000 (08:34 +0000)]
Fix PR5024. LiveVariables::FindLastPartialDef should return a set of sub-registers that were defined by the last partial def, not just a single sub-register.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82535
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Daniel Dunbar [Tue, 22 Sep 2009 07:38:44 +0000 (07:38 +0000)]
Initial support for running LLVM tests from cmake.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82534
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Daniel Dunbar [Tue, 22 Sep 2009 07:38:33 +0000 (07:38 +0000)]
Generate lit.site.cfg from a .in file, as clang does.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82533
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Daniel Dunbar [Tue, 22 Sep 2009 07:38:23 +0000 (07:38 +0000)]
Use Compiler.h macro instead of __attribute__.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82532
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Daniel Dunbar [Tue, 22 Sep 2009 06:09:37 +0000 (06:09 +0000)]
CMake: Fix definition of LTDL_SHLIB_EXT for Darwin.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82530
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Daniel Dunbar [Tue, 22 Sep 2009 06:09:31 +0000 (06:09 +0000)]
Fix llvm-config --src-root and --obj-root for CMake builds.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82529
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Daniel Dunbar [Tue, 22 Sep 2009 06:09:22 +0000 (06:09 +0000)]
llvm-config: Remove unused variables.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82528
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Daniel Dunbar [Tue, 22 Sep 2009 06:09:13 +0000 (06:09 +0000)]
Actually use the arguments with the resolved executable path.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82527
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Daniel Dunbar [Tue, 22 Sep 2009 04:44:56 +0000 (04:44 +0000)]
Revert "Get rid of GetProcessId in Win32/Program.inc.", this breaks
ExecuteAndWait.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82522
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Daniel Dunbar [Tue, 22 Sep 2009 04:44:37 +0000 (04:44 +0000)]
lit: Don't use close_fds=True on Windows.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82521
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Daniel Dunbar [Tue, 22 Sep 2009 04:44:26 +0000 (04:44 +0000)]
lit: When executing commands internally, perform PATH resolution ourselves.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82520
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Daniel Dunbar [Tue, 22 Sep 2009 03:34:53 +0000 (03:34 +0000)]
Switch FoldingSet::AddString to StringRef based API.
- This also fixes a dereference of std::string::end, which makes MSVC unhappy and was causing all the static analyzer clang tests to fail.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82517
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Daniel Dunbar [Tue, 22 Sep 2009 03:34:40 +0000 (03:34 +0000)]
Workaround what I believe is an MSVC bug where it emits a definition for a
static const class member into each translation unit, with external linkage???
- If someone understands this issue better, please clue me in, I haven't
consulted the standard yet.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82516
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Daniel Dunbar [Tue, 22 Sep 2009 02:03:18 +0000 (02:03 +0000)]
Switch DIDescriptor to use a TrackingVH. - This makes it much safer to work with debug info, since it was extraordinarily easy to have dangling pointers thanks to MDNode uniquing.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82507
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Daniel Dunbar [Tue, 22 Sep 2009 02:02:33 +0000 (02:02 +0000)]
Add a TrackingVH value handle.
This is designed for tracking a value even when it might move (like WeakVH), but it is an error to delete the referenced value (unlike WeakVH0. TrackingVH is templated like AssertingVH on the tracked Value subclass, it is an error to RAUW a tracked value to an incompatible type.
For implementation reasons the latter error is only diagnosed on accesses to a mis-RAUWed TrackingVH, because we don't want a virtual interface in a templated class.
The former error is also only diagnosed on access, so that clients are allowed to delete a tracked value, as long as they don't use it. This makes it easier for the client to reason about destruction.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82506
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Evan Cheng [Tue, 22 Sep 2009 01:48:19 +0000 (01:48 +0000)]
Fix a pasto. Also simplify for Bill's benefit.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82505
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Evan Cheng [Tue, 22 Sep 2009 00:29:40 +0000 (00:29 +0000)]
Minor bug fix. LowerSubregs should translate
%S0<def> = EXTRACT_SUBREG %Q0<kill>, 1
to
%S0<def> = IMPLICIT_DEF %Q0<imp-use,kill>
Implicit_def does not *read* any register so the operand should be marked "implicit". The missing "implicit" marker on the operand is wrong, but it doesn't actually break anything.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82503
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Chris Lattner [Mon, 21 Sep 2009 22:39:35 +0000 (22:39 +0000)]
Fix PR5023: The instruction form of DominatorTree::dominates did not
take into consideration that the result of an invoke is only valid in
the normal dest, not the unwind dest. This caused 'PHINode::hasConstantValue'
to return true in an invalid situation, causing mem2reg to delete a phi that
was actually needed. This caused a crash building 483.xalancbmk.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82491
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Chris Lattner [Mon, 21 Sep 2009 22:30:50 +0000 (22:30 +0000)]
move DominatorTree::dominates for instructions out of line,
no functionality change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82490
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Chris Lattner [Mon, 21 Sep 2009 22:27:34 +0000 (22:27 +0000)]
tidy up
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82489
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Chris Lattner [Mon, 21 Sep 2009 22:26:02 +0000 (22:26 +0000)]
tidy up
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82488
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Evan Cheng [Mon, 21 Sep 2009 21:12:25 +0000 (21:12 +0000)]
Clean up spill weight computation. Also some changes to give loop induction
variable increment / decrement slighter high priority.
This has major impact on some micro-benchmarks. On MultiSource/Applications
and spec tests, it's a minor win. It also reduce 256.bzip instruction count
by 8%, 55 on 164.gzip on i386 / Darwin.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82485
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David Goodwin [Mon, 21 Sep 2009 20:52:17 +0000 (20:52 +0000)]
Add Cortex-A8 VFP model.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82483
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Dan Gohman [Mon, 21 Sep 2009 19:47:04 +0000 (19:47 +0000)]
Change MachineMemOperand's alignment value to be the alignment of
the base pointer, without the offset. This matches MemSDNode's
new alignment behavior, and holds more interesting information.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82473
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Dan Gohman [Mon, 21 Sep 2009 18:32:20 +0000 (18:32 +0000)]
Add a comment mentioning the rdar number associated with this test.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82471
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Dan Gohman [Mon, 21 Sep 2009 18:30:38 +0000 (18:30 +0000)]
Add support for rematerializing FsFLD0SS and FsFLD0SD as constant-pool
loads in order to reduce register pressure.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82470
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Dan Gohman [Mon, 21 Sep 2009 18:03:22 +0000 (18:03 +0000)]
Recognize SSE min and max opportunities in even more cases.
And fix a bug with the behavior of min/max instructions formed from
fcmp uge comparisons.
Also, use FiniteOnlyFPMath() for this code instead of UnsafeFPMath,
as it is more specific.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82466
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Dan Gohman [Mon, 21 Sep 2009 17:58:09 +0000 (17:58 +0000)]
Fix the offset values for these memoperands. For frame objects, the
PseudoSourceValue already effectively represents the offset from the
frame base, so the actual offset should not be added to it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82465
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Chris Lattner [Mon, 21 Sep 2009 17:55:47 +0000 (17:55 +0000)]
big endian systems shift by bits too, hopefully this will fix the ppc
bootstrap problems.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82464
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Dan Gohman [Mon, 21 Sep 2009 17:54:42 +0000 (17:54 +0000)]
Nick pointed out that DominanceFrontier and DominanceTree are preserved
by setPreservesCFG().
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82463
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Dan Gohman [Mon, 21 Sep 2009 17:53:35 +0000 (17:53 +0000)]
Remove the special-case for constants in PHI nodes; it's not really
helpful, and it didn't correctly handle the case of constants input
to PHIs for backedges.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82462
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Chris Lattner [Mon, 21 Sep 2009 17:24:04 +0000 (17:24 +0000)]
fix PR5016, a crash I introduced in GVN handing first class
arrays and structs, which cannot be bitcast to integers.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82460
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Mikhail Glushenkov [Mon, 21 Sep 2009 15:53:44 +0000 (15:53 +0000)]
Use raw_ostream::indent instead of passing strings.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82456
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Dan Gohman [Mon, 21 Sep 2009 15:18:33 +0000 (15:18 +0000)]
Fix this assertion string to mention subreg_to_reg.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82455
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Nuno Lopes [Mon, 21 Sep 2009 14:11:56 +0000 (14:11 +0000)]
initialize SymbolsCanStartWithDigit to false by default
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82454
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Xerxes Ranby [Mon, 21 Sep 2009 08:08:29 +0000 (08:08 +0000)]
Update cmake.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82449
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Jakob Stoklund Olesen [Mon, 21 Sep 2009 07:19:08 +0000 (07:19 +0000)]
Verify that phi instructions refer to MBBs in the CFG.
The machine code verifier no longer tolerates phi instructions with noop
operands. All MBBs on a phi instruction must be in the CFG.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82448
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Chris Lattner [Mon, 21 Sep 2009 06:48:08 +0000 (06:48 +0000)]
enable non-local analysis and PRE of large store -> little load.
This doesn't kick in too much because of phi translation issues,
but this can be resolved in the future.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82447
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Chris Lattner [Mon, 21 Sep 2009 06:30:24 +0000 (06:30 +0000)]
convert an std::pair to an explicit struct.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82446
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Chris Lattner [Mon, 21 Sep 2009 06:24:16 +0000 (06:24 +0000)]
move some functions, add a comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82444
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Chris Lattner [Mon, 21 Sep 2009 06:22:46 +0000 (06:22 +0000)]
split HandleLoadFromClobberingStore in two pieces: one that does the
analysis, one that does the xform.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82443
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Chris Lattner [Mon, 21 Sep 2009 06:04:07 +0000 (06:04 +0000)]
add a note
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82442
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Daniel Dunbar [Mon, 21 Sep 2009 05:58:35 +0000 (05:58 +0000)]
Register the MachineModuleInfo for the ARM JIT, and update JITDwarfEmitter to
assert if the setModuleInfo hasn't been called.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82441
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Chris Lattner [Mon, 21 Sep 2009 05:57:47 +0000 (05:57 +0000)]
add pr#
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82440
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Chris Lattner [Mon, 21 Sep 2009 05:57:11 +0000 (05:57 +0000)]
Improve GVN to be able to forward substitute a small load
from a piece of a large store when both are in the same block.
This allows clang to compile the testcase in PR4216 to this code:
_test_bitfield:
movl 4(%esp), %eax
movl %eax, %ecx
andl $-65536, %ecx
orl $32962, %eax
andl $40186, %eax
orl %ecx, %eax
ret
This is not ideal, but is a whole lot better than the code produced
by llvm-gcc:
_test_bitfield:
movw $-32574, %ax
orw 4(%esp), %ax
andw $-25350, %ax
movw %ax, 4(%esp)
movw 7(%esp), %cx
shlw $8, %cx
movzbl 6(%esp), %edx
orw %cx, %dx
movzwl %dx, %ecx
shll $16, %ecx
movzwl %ax, %eax
orl %ecx, %eax
ret
and dramatically better than that produced by gcc 4.2:
_test_bitfield:
pushl %ebx
call L3
"L00000000001$pb":
L3:
popl %ebx
movl 8(%esp), %eax
leal 0(,%eax,4), %edx
sarb $7, %dl
movl %eax, %ecx
andl $7168, %ecx
andl $-7201, %ebx
movzbl %dl, %edx
andl $1, %edx
sall $5, %edx
orl %ecx, %ebx
orl %edx, %ebx
andl $24, %eax
andl $-58336, %ebx
orl %eax, %ebx
orl $32962, %ebx
movl %ebx, %eax
popl %ebx
ret
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82439
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Chris Lattner [Mon, 21 Sep 2009 05:52:45 +0000 (05:52 +0000)]
add a helper method.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82438
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Evan Cheng [Mon, 21 Sep 2009 04:32:32 +0000 (04:32 +0000)]
Fix PR4986. "r1024 = insert_subreg r1024, undef, 2" cannot be turned in an implicit_def. Instead, it's an identity copy so it should be eliminated. Also make sure to update livevariable kill information.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82436
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Daniel Dunbar [Mon, 21 Sep 2009 03:56:00 +0000 (03:56 +0000)]
Don't allow formatted_ostream to be unbuffered, even if its underlying buffer
is.
- The problem is that formatted_ostream forces its underlying buffer to be
unbuffered, so if some client happens to wrap a formatted_ostream around
something, but still use the underlying stream, then we can end up writing on
a fully unbuffered output (which was never intended to be unbuffered).
- This makes clang (and presumably llvm-gcc) -emit-llvm -S a mere 10x faster.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82434
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Chris Lattner [Mon, 21 Sep 2009 02:53:57 +0000 (02:53 +0000)]
one case handled, expanded another testcase inline.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82427
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Chris Lattner [Mon, 21 Sep 2009 02:42:51 +0000 (02:42 +0000)]
formatting cleanups, no functionality change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82426
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Reid Kleckner [Mon, 21 Sep 2009 02:34:59 +0000 (02:34 +0000)]
Add documentation on how to use enable debug information in the JIT and use it with GDB.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82425
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Chris Lattner [Mon, 21 Sep 2009 02:30:42 +0000 (02:30 +0000)]
fix a FileCheck bug where:
; CHECK: foo
; CHECK-NOT: foo
; CHECK: bar
would always fail.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82424
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Daniel Dunbar [Mon, 21 Sep 2009 00:05:30 +0000 (00:05 +0000)]
Move ARM and X86 specific AsmParser tests into separate subdirectories, and only
run if appropriate target is supported.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82419
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Reid Kleckner [Sun, 20 Sep 2009 23:52:43 +0000 (23:52 +0000)]
Implement the JIT side of the GDB JIT debugging interface. To enable this
feature, either build the JIT in debug mode to enable it by default or pass
-jit-emit-debug to lli.
Right now, the only debug information that this communicates to GDB is call
frame information, since it's already being generated to support exceptions in
the JIT. Eventually, when DWARF generation isn't tied so tightly to AsmPrinter,
it will be easy to push that information to GDB through this interface.
Here's a step-by-step breakdown of how the feature works:
- The JIT generates the machine code and DWARF call frame info
(.eh_frame/.debug_frame) for a function into memory.
- The JIT copies that info into an in-memory ELF file with a symbol for the
function.
- The JIT creates a code entry pointing to the ELF buffer and adds it to a
linked list hanging off of a global descriptor at a special symbol that GDB
knows about.
- The JIT calls a function marked noinline that GDB knows about and has put an
internal breakpoint in.
- GDB catches the breakpoint and reads the global descriptor to look for new
code.
- When sees there is new code, it reads the ELF from the inferior's memory and
adds it to itself as an object file.
- The JIT continues, and the next time we stop the program, we are able to
produce a proper backtrace.
Consider running the following program through the JIT:
#include <stdio.h>
void baz(short z) {
long w = z + 1;
printf("%d, %x\n", w, *((int*)NULL)); // SEGFAULT here
}
void bar(short y) {
int z = y + 1;
baz(z);
}
void foo(char x) {
short y = x + 1;
bar(y);
}
int main(int argc, char** argv) {
char x = 1;
foo(x);
}
Here is a backtrace before this patch:
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x2aaaabdfbd10 (LWP 25476)]
0x00002aaaabe7d1a8 in ?? ()
(gdb) bt
#0 0x00002aaaabe7d1a8 in ?? ()
#1 0x0000000000000003 in ?? ()
#2 0x0000000000000004 in ?? ()
#3 0x00032aaaabe7cfd0 in ?? ()
#4 0x00002aaaabe7d12c in ?? ()
#5 0x00022aaa00000003 in ?? ()
#6 0x00002aaaabe7d0aa in ?? ()
#7 0x01000002abe7cff0 in ?? ()
#8 0x00002aaaabe7d02c in ?? ()
#9 0x0100000000000001 in ?? ()
#10 0x00000000014388e0 in ?? ()
#11 0x00007fff00000001 in ?? ()
#12 0x0000000000b870a2 in llvm::JIT::runFunction (this=0x1405b70,
F=0x14024e0, ArgValues=@0x7fffffffe050)
at /home/rnk/llvm-gdb/lib/ExecutionEngine/JIT/JIT.cpp:395
#13 0x0000000000baa4c5 in llvm::ExecutionEngine::runFunctionAsMain
(this=0x1405b70, Fn=0x14024e0, argv=@0x13f06f8, envp=0x7fffffffe3b0)
at /home/rnk/llvm-gdb/lib/ExecutionEngine/ExecutionEngine.cpp:377
#14 0x00000000007ebd52 in main (argc=2, argv=0x7fffffffe398,
envp=0x7fffffffe3b0) at /home/rnk/llvm-gdb/tools/lli/lli.cpp:208
And a backtrace after this patch:
Program received signal SIGSEGV, Segmentation fault.
0x00002aaaabe7d1a8 in baz ()
(gdb) bt
#0 0x00002aaaabe7d1a8 in baz ()
#1 0x00002aaaabe7d12c in bar ()
#2 0x00002aaaabe7d0aa in foo ()
#3 0x00002aaaabe7d02c in main ()
#4 0x0000000000b870a2 in llvm::JIT::runFunction (this=0x1405b70,
F=0x14024e0, ArgValues=...)
at /home/rnk/llvm-gdb/lib/ExecutionEngine/JIT/JIT.cpp:395
#5 0x0000000000baa4c5 in llvm::ExecutionEngine::runFunctionAsMain
(this=0x1405b70, Fn=0x14024e0, argv=..., envp=0x7fffffffe3c0)
at /home/rnk/llvm-gdb/lib/ExecutionEngine/ExecutionEngine.cpp:377
#6 0x00000000007ebd52 in main (argc=2, argv=0x7fffffffe3a8,
envp=0x7fffffffe3c0) at /home/rnk/llvm-gdb/tools/lli/lli.cpp:208
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82418
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Daniel Dunbar [Sun, 20 Sep 2009 23:30:31 +0000 (23:30 +0000)]
Work around a FileCheck bug, for now.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82416
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Chris Lattner [Sun, 20 Sep 2009 22:56:43 +0000 (22:56 +0000)]
simplify as daniel suggests
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82415
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Chris Lattner [Sun, 20 Sep 2009 22:54:26 +0000 (22:54 +0000)]
write rfind in terms of npos as daniel requested
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82414
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Chris Lattner [Sun, 20 Sep 2009 22:46:42 +0000 (22:46 +0000)]
remove a dead method.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82413
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Chris Lattner [Sun, 20 Sep 2009 22:45:18 +0000 (22:45 +0000)]
grammaro
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82412
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Chris Lattner [Sun, 20 Sep 2009 22:44:26 +0000 (22:44 +0000)]
Revert r82404, it is causing a bootstrap miscompile. This is very very
scary, as it indicates a lurking bug. yay.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82411
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