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Author SHA1 Message Date
Owen Anderson
0cad8444cc Move this test to LoopDeletion, where it now passes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50474 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-30 07:17:22 +00:00
Owen Anderson
5023aa58ca This condition got inverted accidentally. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50473 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-30 07:16:33 +00:00
Chris Lattner
69ea9d2308 move lowering of llvm.memset -> store from simplify libcalls 
to instcombine.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50472 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-30 06:39:11 +00:00
Chris Lattner
4103bb9fc6 no reason for simplifylibcalls to simplify intrinsics, instcombine does 
a fine job.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50470 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-30 06:12:15 +00:00
Chris Lattner
0c58cacb7a remove redundant check. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50469 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-30 06:06:37 +00:00
Chris Lattner
deae48ee99 add missing #include 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50468 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-30 04:56:14 +00:00
Chris Lattner
12e6d20059 add a method for comparing to see if a value has a specified name. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50465 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-30 03:55:40 +00:00
Chris Lattner
ea8650cddf use string length computation to generalize several xforms. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50464 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-30 03:07:53 +00:00
Dale Johannesen
21d972ad04 Add comments for previous patch as requested. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50463 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-30 00:43:29 +00:00
Scott Michel
203b2d6eed Bug fixes and updates for CellSPU, syncing up with trunk. Most notable 
fixes are target-specific lowering of frame indices, fix constants generated
for the FSMBI instruction, and fixing SPUTargetLowering::computeMaskedBitsFor-
TargetNode().


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50462 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-30 00:30:08 +00:00
Scott Michel
82747a5484 Fix custom target lowering for zero/any/sign_extend: make sure that 
DAG.UpdateNodeOperands() is called before (not after) the call to
TLI.LowerOperation().


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50461 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-30 00:26:38 +00:00
Dale Johannesen
7b251e0474 Make eh_frame objects by 8-byte aligned on 64-bit 
targets.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50451 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-29 22:58:20 +00:00
John Criswell
3d8c358456 Minor spelling and typo fixes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50448 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-29 22:12:40 +00:00
Owen Anderson
02e9988020 Revert r50441. The original code was correct. Add some more comments so that I don't make the same mistake in the future. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50446 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-29 21:51:00 +00:00
Owen Anderson
9dcace3caf Fix a bug in memcpyopt where the memcpy-memcpy transform was never being applied because 
we were checking for it in the wrong order.  This caused a miscompilation because the
return slot optimization assumes that the call it is dealing with is NOT a memcpy.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50444 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-29 21:26:06 +00:00
Owen Anderson
7b6fafaa8d We should be returning true here since we've changed the function. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50442 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-29 21:02:46 +00:00
Owen Anderson
9862f31533 A lot of cleanups and documentation improvements, as well as a few corner case fixes. Most 
of this was suggested by Chris.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50441 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-29 20:59:33 +00:00
Owen Anderson
0396cd33ca Rename DeadLoopElimination to LoopDeletion, part 2. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50437 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-29 20:06:54 +00:00
Owen Anderson
d6864fee97 Rename DeadLoopElimination to LoopDeletion, part one. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50436 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-29 19:58:07 +00:00
Anton Korobeynikov
966e7997b5 Don't do stupid things: doInitialization(Module&) is not applicable to ModulePass :) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50433 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-29 18:16:22 +00:00
Chris Lattner
40700fe683 don't eliminate load from volatile value on paths where the load is dead. 
This fixes the second half of PR2262


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50430 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-29 17:28:22 +00:00
Chris Lattner
68608e4dd0 make this test reduced and *valid* 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50429 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-29 17:25:32 +00:00
Chris Lattner
54545ac023 fix a subtle volatile handling bug. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50428 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-29 17:13:43 +00:00
Roman Levenstein
a0201d5204 Use std::set instead of std::priority_queue for the RegReductionPriorityQueue. 
This removes the existing bottleneck related to the removal of elements from 
the middle of the queue.

Also fixes a subtle bug in ScheduleDAGRRList::CapturePred:
It was updating the state of the SUnit before removing it. As a result, the
comparison operators were working incorrectly and this SUnit could not be removed 
from the queue properly.

Reviewed by Evan and Dan. Approved by Dan.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50412 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-29 09:07:59 +00:00
Chris Lattner
5b222d748a Implement more aggressive support for analyzing string length. This 
generalizes the previous code to handle the case when the string is not
an immediate to the strlen call (for example, crazy stuff like 
strlen(c ? "foo" : "bart"+1) -> 3).  This implements 
gcc.c-torture/execute/builtins/strlen-2.c.  I will generalize other
cases in simplifylibcalls to use the same routine later.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50408 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-29 06:56:02 +00:00
Owen Anderson
5f8b344255 Clarify what we mean by a dead loop. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50406 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-29 06:34:55 +00:00
Chris Lattner
00487995ea new testcase for PR2094. The inline asms should not pin allocas to the 
stack anymore.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50397 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-29 05:53:29 +00:00
Chris Lattner
cea1fdd174 don't delete the last store to an alloca if the store is volatile. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50390 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-29 04:58:38 +00:00
Chris Lattner
3fb2968f2f make the vector conversion magic handle multiple results. 
We now compile test2/test3 to:

_test2:
	## InlineAsm Start
	set %xmm0, %xmm1
	## InlineAsm End
	addps	%xmm1, %xmm0
	ret
_test3:
	## InlineAsm Start
	set %xmm0, %xmm1
	## InlineAsm End
	paddd	%xmm1, %xmm0
	ret

as expected.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50389 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-29 04:48:56 +00:00
Chris Lattner
41f6259a4b add support for multiple return values in inline asm. This is a step 
towards PR2094.  It now compiles the attached .ll file to:

_sad16_sse2:
	movslq	%ecx, %rax
	## InlineAsm Start
	%ecx %rdx %rax %rax %r8d %rdx %rsi
	## InlineAsm End
	## InlineAsm Start
	set %eax
	## InlineAsm End
	ret

which is pretty decent for a 3 output, 4 input asm.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50386 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-29 04:29:54 +00:00
Evan Cheng
8509fcf8eb Another extract_subreg coalescing bug. 
e.g.
vr1024<2> extract_subreg vr1025, 2
If vr1024 do not have the same register class as vr1025, it's not safe to coalesce this away. For example, vr1024 might be a GPR32 while vr1025 might be a GPR64.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50385 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-29 01:41:44 +00:00
Owen Anderson
e54cfdb32a Add some more comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50384 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-29 00:45:15 +00:00
Owen Anderson
d3d5b888d9 Remove debugging code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50383 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-29 00:39:24 +00:00
Owen Anderson
0ff7708a5b Add dead loop elimination, which removes dead loops for which we can compute 
the trip count.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50382 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-29 00:38:34 +00:00
Evan Cheng
8c2f662d84 Add -march=x86. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50380 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-28 23:31:41 +00:00
Dan Gohman
1d7153976c Update and_ops.ll according to the recent dagcombiner changes. 
Add a new test, and_ops_more.ll, which is XFAIL'd, to
record the parts of and_ops.ll that were affected by this
change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50379 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-28 23:26:22 +00:00
Evan Cheng
9d32f2aacb Test case. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50377 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-28 22:14:34 +00:00
Evan Cheng
33bf38ad88 Fix a bug in RegsForValue::getCopyToRegs() that causes cyclical scheduling units. If it's creating multiple CopyToReg nodes that are "flagged" together, it should not create a TokenFactor for it's chain outputs: 
c1, f1 = CopyToReg                                                                                                                                                                                             
c2, f2 = CopyToReg                                                                                                                                                                                             
c3     = TokenFactor c1, c2                                                                                                                                                                                    
 ...                                                                                                                                                                                                                      
       = user c3, ..., f2

Now that the two CopyToReg's and the user are "flagged" together. They effectively forms a single scheduling unit. The TokenFactor is now both an operand and a successor of the Flagged nodes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50376 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-28 22:07:13 +00:00
Anton Korobeynikov
1fcfc3b6b2 Correct parameter attributes encoding for C bindings. 
Patch by Anders Johnsen!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50375 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-28 21:48:04 +00:00
Anton Korobeynikov
9ef7425a4d Add possibility of using arbitrary to to execute stuff from bugpoint. 
Patch by Pekka Jääskeläinen!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50373 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-28 20:53:48 +00:00
Dan Gohman
3e2dda63d0 Fix a pointer-arithmetic bug that caused 64-bit host pointer values to 
be truncated to 32 bits. This fixes the recent Benchmarks/McCat/09-vor
regression on x86-64, among other things.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50372 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-28 20:25:15 +00:00
Dan Gohman
00acf97feb Fix DSE to not eliminate volatile loads with no uses. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50370 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-28 19:51:27 +00:00
Dale Johannesen
beb5be0332 Don't try to convert PPC long double. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50369 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-28 19:46:58 +00:00
Dan Gohman
187db7b950 Evan pointed out that folding sext to zext may not be correct 
if the zext is not legal.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50368 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-28 18:47:17 +00:00
Dan Gohman
ebc3a3a3b2 Delete an unused constructor. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50367 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-28 18:28:49 +00:00
Dan Gohman
10a6b7ab65 Add a comment to CreateRegForValue that clarifies the handling of 
aggregate types.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50366 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-28 18:19:43 +00:00
Dan Gohman
0fe00906c8 Rewrite the comments for RegsForValue and its members, and 
reorder some of the members for clarity.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50365 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-28 18:10:39 +00:00
Ted Kremenek
9d695d5f7d Add more alignment enums. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50363 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-28 17:58:20 +00:00
Ted Kremenek
c9715624fa Bug fix in BumpPtrAllocator: don't assume that all objects have the same alignment. "Bump" of the pointer for the next allocated object to be of the specified alignment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50362 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-28 17:58:07 +00:00
Dan Gohman
b20d4f8d49 Don't call size() on each iteration of the loop. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50361 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-28 17:42:03 +00:00