Bill Wendling [Tue, 27 Apr 2010 00:55:25 +0000 (00:55 +0000)]
r98363 deleted a '!' when cleaning up whitespace. This caused globals which are
*not* declarations to *not* be placed in the "preserve" list.
<rdar://problem/
7870735>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102405
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Dale Johannesen [Tue, 27 Apr 2010 00:01:42 +0000 (00:01 +0000)]
Un-XFAIL this on ppc. My enabling of dbg_declare handling
in ISel fixed it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102404
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Chris Lattner [Mon, 26 Apr 2010 23:49:32 +0000 (23:49 +0000)]
Fix a problem that lower invoke has with allocas (PR6694), and
add a version of createLowerInvokePass that allows the client
to specify whether it wants "expensive" or "cheap" lowering.
Patch by Alex Mac!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102402
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Chris Lattner [Mon, 26 Apr 2010 23:41:43 +0000 (23:41 +0000)]
add a comment in verbose-asm mode indicating why a noop is being generated.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102401
91177308-0d34-0410-b5e6-
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Chris Lattner [Mon, 26 Apr 2010 23:37:21 +0000 (23:37 +0000)]
on darwin empty functions need to codegen into something of non-zero length,
otherwise labels get incorrectly merged. We handled this by emitting a
".byte 0", but this isn't correct on thumb/arm targets where the text segment
needs to be a multiple of 2/4 bytes. Handle this by emitting a noop. This
is more gross than it should be because arm/ppc are not fully mc'ized yet.
This fixes rdar://
7908505
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102400
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Dan Gohman [Mon, 26 Apr 2010 23:36:52 +0000 (23:36 +0000)]
Integrate Jeffery Yasskin's suggestions with respect to
traps flowing through memory references, add some text to
better cover phi nodes and externally-visible side effects,
add an example of instructions being control-dependent
on a trap value, and reword some of the existing trap rules.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102399
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Bob Wilson [Mon, 26 Apr 2010 23:20:08 +0000 (23:20 +0000)]
Handle register-to-register copies within the tGPR class.
Radar
7896289
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102396
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Bob Wilson [Mon, 26 Apr 2010 22:56:56 +0000 (22:56 +0000)]
Avoid adding a null MD node operand, which crashes with "-debug" when trying
to print the operand.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102395
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Devang Patel [Mon, 26 Apr 2010 22:54:28 +0000 (22:54 +0000)]
Use DW_AT_entry_pc instead of DW_AT_low_pc/DW_AT_high_pc pair. This simplifies debug range entries.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102394
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Dan Gohman [Mon, 26 Apr 2010 21:46:36 +0000 (21:46 +0000)]
When checking whether the special handling for an addrec increment which
doesn't dominate the header is needed, don't check whether the increment
expression has computable loop evolution. While the operands of an
addrec are required to be loop-invariant, they're not required to
dominate any part of the loop. This fixes PR6914.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102389
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Dan Gohman [Mon, 26 Apr 2010 21:37:43 +0000 (21:37 +0000)]
Add a comment to this test.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102387
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Jeffrey Yasskin [Mon, 26 Apr 2010 21:21:24 +0000 (21:21 +0000)]
Consolidate the description of volatile operations, now that some of the
intrinsics have volatile semantics in addition to the load and store
instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102384
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Dan Gohman [Mon, 26 Apr 2010 20:54:53 +0000 (20:54 +0000)]
Branching or switching on trap transfers imminent undefined behavior
onto control-dependent instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102381
91177308-0d34-0410-b5e6-
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Dale Johannesen [Mon, 26 Apr 2010 20:48:54 +0000 (20:48 +0000)]
Remove crufty comments.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102380
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Gabor Greif [Mon, 26 Apr 2010 20:46:03 +0000 (20:46 +0000)]
add some typewriter tags
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102378
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Dan Gohman [Mon, 26 Apr 2010 20:21:21 +0000 (20:21 +0000)]
Fix HTML errors that Jeffery Yasskin noticed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102376
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Dale Johannesen [Mon, 26 Apr 2010 20:07:31 +0000 (20:07 +0000)]
Handle target-specific form of DBG_VALUE in AsmPrinter.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102373
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Dale Johannesen [Mon, 26 Apr 2010 20:06:49 +0000 (20:06 +0000)]
Add DBG_VALUE handling for byval parameters; this
produces a comment on targets that support it, but
the Dwarf writer is not hooked up yet.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102372
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Dale Johannesen [Mon, 26 Apr 2010 20:05:01 +0000 (20:05 +0000)]
Add PPC AsmPrinter handling for target-specific form of
DBG_VALUE, and a cautionary comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102371
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Evan Cheng [Mon, 26 Apr 2010 19:16:00 +0000 (19:16 +0000)]
Insert dbg_value instructions for function entry block liveins (i.e. function arguments).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102368
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Evan Cheng [Mon, 26 Apr 2010 19:06:11 +0000 (19:06 +0000)]
Promoting 16-bit cmp / test aren't free. Don't do it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102366
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Chris Lattner [Mon, 26 Apr 2010 18:46:46 +0000 (18:46 +0000)]
fix PR6921 a different way. Intead of increasing the
alignment of globals with a specified alignment, we fix
common variables to obey their alignment. Add a comment
explaining why this behavior is important.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102365
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Evan Cheng [Mon, 26 Apr 2010 18:37:21 +0000 (18:37 +0000)]
Re-enable 102323 with fix: do not update dbg_value's with incorrect frame indices when the live interval are being re-materialized.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102361
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Chris Lattner [Mon, 26 Apr 2010 18:30:45 +0000 (18:30 +0000)]
Revert r102300/102301, which serious broke objc apps.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102359
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Chris Lattner [Mon, 26 Apr 2010 18:21:23 +0000 (18:21 +0000)]
fix PR6940: sitofp(undef) folds to 0.0, not undef.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102358
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Chris Lattner [Mon, 26 Apr 2010 17:42:18 +0000 (17:42 +0000)]
wrap some long lines.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102354
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Bob Wilson [Mon, 26 Apr 2010 17:40:49 +0000 (17:40 +0000)]
Update MachineSSAUpdater with the same changes I made for the IR-level
SSAUpdater. I'm going to try to refactor this to share most of the code
between them.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102353
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Chris Lattner [Mon, 26 Apr 2010 17:38:10 +0000 (17:38 +0000)]
add GHC, thanks to David Terei
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102352
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Evan Cheng [Mon, 26 Apr 2010 08:24:07 +0000 (08:24 +0000)]
Temporary disable spiller modifying dbg_value. It's breaking build.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102327
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Evan Cheng [Mon, 26 Apr 2010 08:16:57 +0000 (08:16 +0000)]
Remove a redundant comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102326
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Evan Cheng [Mon, 26 Apr 2010 07:39:36 +0000 (07:39 +0000)]
Add PPC specific emitFrameIndexDebugValue.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102325
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Evan Cheng [Mon, 26 Apr 2010 07:39:25 +0000 (07:39 +0000)]
Add ARM specific emitFrameIndexDebugValue.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102324
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Evan Cheng [Mon, 26 Apr 2010 07:38:55 +0000 (07:38 +0000)]
- Move TargetLowering::EmitTargetCodeForFrameDebugValue to TargetInstrInfo and rename it to emitFrameIndexDebugValue.
- Teach spiller to modify DBG_VALUE instructions to reference spill slots.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102323
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Dale Johannesen [Sun, 25 Apr 2010 21:33:54 +0000 (21:33 +0000)]
Stop abusing EmitInstrWithCustomInserter for target-dependent
form of DEBUG_VALUE, as it doesn't have reasonable default
behavior for unsupported targets. Add a new hook instead.
No functional change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102320
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Gabor Greif [Sun, 25 Apr 2010 21:30:22 +0000 (21:30 +0000)]
another typo pointed out by sajd
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102319
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Gabor Greif [Sun, 25 Apr 2010 21:27:54 +0000 (21:27 +0000)]
fix two typos pointed out by sajd
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102318
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Dale Johannesen [Sun, 25 Apr 2010 21:03:54 +0000 (21:03 +0000)]
Add comment re byval args. Doesn't actually work this way yet.
xs
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102316
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David Chisnall [Sun, 25 Apr 2010 19:13:33 +0000 (19:13 +0000)]
Added bullet about GNUstep Objective-C ABI support to the Clang section of the release notes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102309
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Chris Lattner [Sun, 25 Apr 2010 05:51:14 +0000 (05:51 +0000)]
testcase for PR6913
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102303
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Chris Lattner [Sun, 25 Apr 2010 05:49:31 +0000 (05:49 +0000)]
this passes now.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102301
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Chris Lattner [Sun, 25 Apr 2010 05:30:43 +0000 (05:30 +0000)]
Fix PR6921: globals were not getting correctly rounded up to their
preferred alignment unless they were common or some other special
case.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102300
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Chris Lattner [Sun, 25 Apr 2010 04:44:26 +0000 (04:44 +0000)]
silence a warning, patch by "mike".
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102297
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Chris Lattner [Sun, 25 Apr 2010 04:43:02 +0000 (04:43 +0000)]
remove #if 1's.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102296
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Dan Gohman [Sun, 25 Apr 2010 00:12:20 +0000 (00:12 +0000)]
Fix an autoconf bug: The second argument to AC_LANG_PROGRAM is code that
gets placed inside a main function, and should not itself be a main
function. This is silently hidden in GCC-hosted builds because the
inner main looks like a nested function declaration, which GCC supports.
In builds with compilers which do not support nested functions (by default),
this was causing an error, which caused these autoconf checks to fail,
leaving their options disabled.
This fixes test/Feature/load_module.ll on x86_64-unknown-linux-gnu
llvm-gcc selfhost builds, among other things.
This also includes a regenerated configure, as the diff is small and telling.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102288
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Dan Gohman [Sat, 24 Apr 2010 22:15:58 +0000 (22:15 +0000)]
PHI nodes also do not necessarily return trap with a trap operand.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102278
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Nick Lewycky [Sat, 24 Apr 2010 22:01:40 +0000 (22:01 +0000)]
Fix typo.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102276
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Nick Lewycky [Sat, 24 Apr 2010 05:07:24 +0000 (05:07 +0000)]
Use provided llvm-defined variables instead of twisting user-controlled knobs.
No visible change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102240
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Nick Lewycky [Sat, 24 Apr 2010 04:56:34 +0000 (04:56 +0000)]
Don't touch CXXFLAGS. If it's set in the environment then sub-makes will see
the variable that we set as though it came from the user. Fixes PR6835.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102239
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Evan Cheng [Sat, 24 Apr 2010 04:44:57 +0000 (04:44 +0000)]
Avoid promoting a i16 node if it would eliminate a (store (op (load))) opportunity.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102237
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Evan Cheng [Sat, 24 Apr 2010 04:43:44 +0000 (04:43 +0000)]
When a load operand is promoted to an extload, replace other uses with uses of extload result truncated.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102236
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Dan Gohman [Sat, 24 Apr 2010 03:13:44 +0000 (03:13 +0000)]
Generalize LSR's OptimizeMax to handle the new kinds of max expressions
that indvars may use, now that indvars is recognizing le and ge loops.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102235
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Dan Gohman [Sat, 24 Apr 2010 03:09:42 +0000 (03:09 +0000)]
ScalarEvolution support for <= and >= loops.
Also, generalize ScalarEvolutions's min and max recognition to handle
some new forms of min and max that this change makes more common.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102234
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Dan Gohman [Sat, 24 Apr 2010 01:38:36 +0000 (01:38 +0000)]
Use SimplifyICmpOperands in isKnownPredicate too.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102233
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Dan Gohman [Sat, 24 Apr 2010 01:34:53 +0000 (01:34 +0000)]
Update isImpliedCond to use the new SimplifyICmpOperands utility.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102232
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Dan Gohman [Sat, 24 Apr 2010 01:28:42 +0000 (01:28 +0000)]
Add a new utility function SimplifyICmpOperands. Much of this code is
refactored out of ScalarEvolution::isImpliedCond, which will be updated
to use this new utility routine soon.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102229
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Dan Gohman [Sat, 24 Apr 2010 01:17:30 +0000 (01:17 +0000)]
Apply a fix for a vector setcc dagcombine from Jan Sjodin. No
testcase yet, as the testcase now fails downstream.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102228
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Sean Callanan [Sat, 24 Apr 2010 01:00:16 +0000 (01:00 +0000)]
Fixed edis to tokenize instructions with no
operands correctly.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102227
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Jim Grosbach [Sat, 24 Apr 2010 00:46:14 +0000 (00:46 +0000)]
cross-build Makefile needs to unset CFLAGS/CXXFLAGS when building the build-side utilities since the flags will be for the cross-compiler.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102225
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Chris Lattner [Fri, 23 Apr 2010 22:39:33 +0000 (22:39 +0000)]
no longer xfail
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102220
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Sean Callanan [Fri, 23 Apr 2010 22:17:17 +0000 (22:17 +0000)]
Fixes to edis that mark x86 call targets as
memory operands rather than immediate operands.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102217
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Stuart Hastings [Fri, 23 Apr 2010 22:12:57 +0000 (22:12 +0000)]
Per Chris, fuse four trivial tests using grep (r102199) into one that uses FileCheck.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102216
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Chris Lattner [Fri, 23 Apr 2010 21:16:07 +0000 (21:16 +0000)]
enable my inliner change: add newly devirtualized call sites to
the worklist, making them inline candidates.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102213
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Dan Gohman [Fri, 23 Apr 2010 19:41:15 +0000 (19:41 +0000)]
Change TargetData's algorithm for computing defualt vector type
alignment to match what's used in clang and GCC for __alignof, rather
than trying to guess what Legalize is going to be doing.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102206
91177308-0d34-0410-b5e6-
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Evan Cheng [Fri, 23 Apr 2010 19:10:30 +0000 (19:10 +0000)]
Code refactoring.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102202
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Stuart Hastings [Fri, 23 Apr 2010 19:03:32 +0000 (19:03 +0000)]
Add some missing x86 patterns for movdq2q. Fixes two (LLVM-)GCC DejaGNU testcases. Radar
6881029.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102199
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Chris Lattner [Fri, 23 Apr 2010 18:38:40 +0000 (18:38 +0000)]
fix some failures my callgraph dump format change broke.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102197
91177308-0d34-0410-b5e6-
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Chris Lattner [Fri, 23 Apr 2010 18:37:01 +0000 (18:37 +0000)]
switch InlineInfo.DevirtualizedCalls's list to be of WeakVH.
This fixes a bug where calls inlined into an invoke would get
changed into an invoke but the array would keep pointing to
the (now dead) call. The improved inliner behavior is still
disabled for now.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102196
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Chris Lattner [Fri, 23 Apr 2010 18:31:01 +0000 (18:31 +0000)]
testcase for the bug that required a patch to be reverted.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102195
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Chris Lattner [Fri, 23 Apr 2010 18:23:40 +0000 (18:23 +0000)]
fix callgraph dump to not print 0x0x1234 for nodes.
Add the instruction pointer value for debuggability.
We now get dump output that looks like this:
Call graph node for function: 'f1'<<0x1017086b0>> #uses=1
CS<0x1017046f8> calls external node
Call graph node for function: '_ZNSt6vectorIdSaIdEEC1EmRKdRKS0_'<<0x1017086f0>> #uses=1
CS<0x0> calls external node
Call graph node for function: 'f4'<<0x1017087a0>> #uses=1
CS<0x101708c88> calls function 'f3'
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102194
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Evan Cheng [Fri, 23 Apr 2010 18:21:16 +0000 (18:21 +0000)]
Fix X86ISD::CMP i16 to i32 promotion.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102192
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Dan Gohman [Fri, 23 Apr 2010 15:29:50 +0000 (15:29 +0000)]
Move FastISel's HandlePHINodesInSuccessorBlocks call down into FastISel
itself too.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102176
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Dan Gohman [Fri, 23 Apr 2010 15:23:32 +0000 (15:23 +0000)]
Switch getelementptr inbounds and sdiv exact from undef to trap.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102175
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Sean Callanan [Fri, 23 Apr 2010 01:56:36 +0000 (01:56 +0000)]
Fixed EDOperand to use the operand type, not the
flags, to determine whether or not the operand is
a memory operand.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102158
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Dan Gohman [Fri, 23 Apr 2010 01:55:05 +0000 (01:55 +0000)]
Fix LSR to tolerate cases where ScalarEvolution initially
misses an opportunity to fold add operands, but folds them
after LSR has separated them out. This fixes rdar://
7886751.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102157
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Dan Gohman [Fri, 23 Apr 2010 01:51:29 +0000 (01:51 +0000)]
When it doesn't matter whether zero or sign extension is used,
use ScalarEvolutions "any" extend function.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102156
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Dan Gohman [Fri, 23 Apr 2010 01:18:53 +0000 (01:18 +0000)]
Revert 102135, 102129, 102127, 102106, 102104, 102102, 102012, 102004,
because 102004 causes codegen to emit invalid assembly on at least
x86_64-unknown-gnu-linux.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102155
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Chris Lattner [Fri, 23 Apr 2010 00:50:50 +0000 (00:50 +0000)]
reject invalid comma stuff with a message. We reject the case in
PR6888 with:
$ llvm-as t.ll
llvm-as: t.ll:2:29: error: expected metadata or 'align'
store <3 x i32> %x, i32 1, i32 1>, <3 x i32>* %p
^
instead of:
$ llvm-as t.ll
llvm-as:
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102154
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Chris Lattner [Fri, 23 Apr 2010 00:41:03 +0000 (00:41 +0000)]
disable my previous inliner patch, it appears to be busting self-host.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102153
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Chris Lattner [Thu, 22 Apr 2010 23:37:35 +0000 (23:37 +0000)]
The inliner was choosing to not consider call sites
that appear in the SCC as a result of inlining as candidates
for inlining. Change this so that it *does* consider call
sites that change from being indirect to being direct as a
result of inlining. This allows it to completely
"devirtualize" the testcase.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102146
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Jim Grosbach [Thu, 22 Apr 2010 23:24:18 +0000 (23:24 +0000)]
Update ARM DAGtoDAG for matching UBFX instruction for unsigned bitfield
extraction. This fixes PR5998.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102144
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Dan Gohman [Thu, 22 Apr 2010 23:14:21 +0000 (23:14 +0000)]
Add an initial description of a new concept: trap values, and change
the definition of the nsw and nuw flags to make use of it.
nsw was introduced to help optimizers answer yes to the following:
// Can we change i from i32 to i64 to eliminate the cast inside the loop?
for (int i = 0; i < n; ++i) A[i] *= 0.1;
// Can we assume that this loop will eventually terminate?
for (int i = 0; i <= n; ++i) A[i] *= 0.1;
In its current form, it isn't truly sufficient for either.
In the first case, if the increment overflows, it'll still have some
valid i32 value; sign-extending it will produce a value which is 33
homogeneous sign bits trailed by 31 independent undef bits. If i is
promoted to i64, it won't have those same values when it reaches that
point. (The compiler could recover here by reasoning about how i is
used by the load, but that's a lot more complicated and isn't always
possible.)
In the second case, there is no value for i which will be greater than
n, so having the increment return undef on overflow doesn't help.
Trap values are a formalization of some existing concepts that we have
about LLVM IR, and give the optimizers a better basis for answering yes
to both questions above.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102140
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Chris Lattner [Thu, 22 Apr 2010 23:07:58 +0000 (23:07 +0000)]
refactor the interface to InlineFunction so that most of the in/out
arguments are handled with a new InlineFunctionInfo class. This
makes it easier to extend InlineFunction to return more info in the
future.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102137
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Devang Patel [Thu, 22 Apr 2010 22:06:28 +0000 (22:06 +0000)]
Remove the test for now.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102135
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Chris Lattner [Thu, 22 Apr 2010 21:34:16 +0000 (21:34 +0000)]
add macruby back
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102132
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Chris Lattner [Thu, 22 Apr 2010 21:31:00 +0000 (21:31 +0000)]
when inlining something like this:
define void @f3(void (i8*)* %__f) ssp {
entry:
call void %__f(i8* undef)
unreachable
}
define void @f4(i8* %this) ssp align 2 {
entry:
call void @f3(void (i8*)* @f2) ssp
ret void
}
The inliner is turning the indirect call to %__f into a direct
call to F2. Make the call graph more precise when this happens.
The inliner doesn't revisit call sites introduced by inlining,
so there isn't an easy way to test for this, but a more precise
callgraph is a good thing.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102131
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Devang Patel [Thu, 22 Apr 2010 20:56:35 +0000 (20:56 +0000)]
Add comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102129
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Dan Gohman [Thu, 22 Apr 2010 20:55:53 +0000 (20:55 +0000)]
Sink SelectionDAGBuilder's HandlePHINodesInSuccessorBlocks down
into SelectionDAGBuilder itself.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102128
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Devang Patel [Thu, 22 Apr 2010 20:52:00 +0000 (20:52 +0000)]
Adjust debug range offsets for isWeakForLinker() functions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102127
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Dan Gohman [Thu, 22 Apr 2010 20:50:43 +0000 (20:50 +0000)]
Add a blurb about the new LSR.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102126
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Nick Lewycky [Thu, 22 Apr 2010 20:48:34 +0000 (20:48 +0000)]
The -condprop pass has been deleted.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102125
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Dan Gohman [Thu, 22 Apr 2010 20:47:28 +0000 (20:47 +0000)]
The post-RA scheduler is currently off by default on x86.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102124
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Dan Gohman [Thu, 22 Apr 2010 20:46:50 +0000 (20:46 +0000)]
Move HandlePHINodesInSuccessorBlocks functions out of SelectionDAGISel
and into SelectionDAGBuilder and FastISel.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102123
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Douglas Gregor [Thu, 22 Apr 2010 20:42:40 +0000 (20:42 +0000)]
Add some verbiage about Clang to the 2.7 release notes
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102121
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Chris Lattner [Thu, 22 Apr 2010 20:42:33 +0000 (20:42 +0000)]
add a DEBUG call so that -debug lists when CGSCCPM iterates.
Fix RefreshCallGraph to use CGN->replaceCallEdge instead of hand
rolling its own loop. replaceCallEdge properly maintains the
reference counts of the nodes, fixing a crash exposed by the
iterative callgraph stuff.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102120
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Chris Lattner [Thu, 22 Apr 2010 20:41:10 +0000 (20:41 +0000)]
eliminate dead #include.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102119
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Evan Cheng [Thu, 22 Apr 2010 20:19:46 +0000 (20:19 +0000)]
- It's not safe to promote rotates (at least not trivially).
- Some code refactoring.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102111
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Dan Gohman [Thu, 22 Apr 2010 20:06:42 +0000 (20:06 +0000)]
Fix a comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102110
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Dan Gohman [Thu, 22 Apr 2010 19:55:20 +0000 (19:55 +0000)]
Move PHINodesToUpdate out of SelectionDAGBuilder and into
FunctionLoweringInfo, as it isn't SelectionDAG-specific. This isn't
completely natural, as PHI node state is not per-function but rather
per-basic-block, however there's currently no other convenient
per-basic-block state to group it with.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102109
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Devang Patel [Thu, 22 Apr 2010 18:43:35 +0000 (18:43 +0000)]
Rename InsnAfterLabelMap and InsnBeforeLabelMap.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102106
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Devang Patel [Thu, 22 Apr 2010 18:39:21 +0000 (18:39 +0000)]
Keep track of MCSymbol used to mark beginning of a function.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102104
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