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Author SHA1 Message Date
Evan Cheng
ac7eae5b89 - When legal, promote a load to zextload rather than ext load. 
- Catch more further dag combine opportunities as result of operand promotion, e.g. (i32 anyext (i16 trunc (i32 x))) -> (i32 x)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102455 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-27 19:48:13 +00:00
Devang Patel
eac9c07fde Identify when a lexical scope is split in to multiple instruction ranges. Emit such ranges using DW_AT_ranges. 
This patch fixes bug (PR6894) introduced by previous version of this patch.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102454 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-27 19:46:33 +00:00
Evan Cheng
ed33b13a10 Do not count kill, implicit_def instructions as printed instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102453 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-27 19:38:45 +00:00
Chris Lattner
4c4d0c0cc5 round zero-byte .zerofill directives up to 1 byte. This 
should fix some "g++.dg-struct-layout-1" failures, 
rdar://7886017


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102421 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-27 07:41:44 +00:00
Chris Lattner
77640feed7 fix wordo 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102418 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-27 07:28:11 +00:00
Chris Lattner
de076819e4 remove some comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102417 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-27 06:57:10 +00:00
Dale Johannesen
fc0b860bcc Revert a small part of 102372; this fixes at least one 
of the dbg testsuite regressions.  I don't think this is
really the right fix; this change exposed an existing problem
upstream somewhere.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102410 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-27 02:10:05 +00:00
Bill Wendling
c3d0e0c8ef 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 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-27 00:55:25 +00:00
Dale Johannesen
caf6750455 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 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-27 00:01:42 +00:00
Chris Lattner
c6f0aadc3b 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 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 23:49:32 +00:00
Chris Lattner
d61647d306 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-b5e6-96231b3b80d8
 2010-04-26 23:41:43 +00:00
Chris Lattner
ee9eb411ff 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 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 23:37:21 +00:00
Dan Gohman
ae11c3f83e 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 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 23:36:52 +00:00
Bob Wilson
5dfa87ecc6 Handle register-to-register copies within the tGPR class. 
Radar 7896289


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102396 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 23:20:08 +00:00
Bob Wilson
cc7354e993 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 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 22:56:56 +00:00
Devang Patel
5098da0a7e 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 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 22:54:28 +00:00
Dan Gohman
948c8a3e3d 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 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 21:46:36 +00:00
Dan Gohman
585c40129f Add a comment to this test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102387 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 21:37:43 +00:00
Jeffrey Yasskin
93e066d0e2 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 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 21:21:24 +00:00
Dan Gohman
c30f6e1c89 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-b5e6-96231b3b80d8
 2010-04-26 20:54:53 +00:00
Dale Johannesen
925965e6ba Remove crufty comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102380 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 20:48:54 +00:00
Gabor Greif
28034cde44 add some typewriter tags 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102378 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 20:46:03 +00:00
Dan Gohman
c68ce066a5 Fix HTML errors that Jeffery Yasskin noticed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102376 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 20:21:21 +00:00
Dale Johannesen
3f282aa94b Handle target-specific form of DBG_VALUE in AsmPrinter. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102373 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 20:07:31 +00:00
Dale Johannesen
fdb42fa5fe 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 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 20:06:49 +00:00
Dale Johannesen
efc3a6348a 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 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 20:05:01 +00:00
Evan Cheng
f48023b3cf 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 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 19:16:00 +00:00
Evan Cheng
552f09a0d7 Promoting 16-bit cmp / test aren't free. Don't do it. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102366 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 19:06:11 +00:00
Chris Lattner
567dd1f5d0 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 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 18:46:46 +00:00
Evan Cheng
6fa7636e61 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 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 18:37:21 +00:00
Chris Lattner
f74e25f60c Revert r102300/102301, which serious broke objc apps. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102359 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 18:30:45 +00:00
Chris Lattner
8581c260d3 fix PR6940: sitofp(undef) folds to 0.0, not undef. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102358 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 18:21:23 +00:00
Chris Lattner
095539f97c wrap some long lines. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102354 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 17:42:18 +00:00
Bob Wilson
211678a0d7 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 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 17:40:49 +00:00
Chris Lattner
7c8e7965e1 add GHC, thanks to David Terei 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102352 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 17:38:10 +00:00
Evan Cheng
6cd4b34261 Temporary disable spiller modifying dbg_value. It's breaking build. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102327 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 08:24:07 +00:00
Evan Cheng
fc4d530ad6 Remove a redundant comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102326 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 08:16:57 +00:00
Evan Cheng
0965217e74 Add PPC specific emitFrameIndexDebugValue. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102325 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 07:39:36 +00:00
Evan Cheng
62b50656ce Add ARM specific emitFrameIndexDebugValue. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102324 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 07:39:25 +00:00
Evan Cheng
962021bc7f - 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 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 07:38:55 +00:00
Dale Johannesen
f822e733af 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 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-25 21:33:54 +00:00
Gabor Greif
e32adf53b2 another typo pointed out by sajd 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102319 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-25 21:30:22 +00:00
Gabor Greif
1440dbe4c2 fix two typos pointed out by sajd 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102318 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-25 21:27:54 +00:00
Dale Johannesen
7dc7840850 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 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-25 21:03:54 +00:00
David Chisnall
8e0bd80e38 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 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-25 19:13:33 +00:00
Chris Lattner
84c6e60c02 testcase for PR6913 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102303 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-25 05:51:14 +00:00
Chris Lattner
ff1c0444ea this passes now. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102301 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-25 05:49:31 +00:00
Chris Lattner
044698b39a 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 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-25 05:30:43 +00:00
Chris Lattner
73382423f2 silence a warning, patch by "mike". 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102297 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-25 04:44:26 +00:00
Chris Lattner
d89673c028 remove #if 1's. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102296 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-25 04:43:02 +00:00