Commit Graph

1464 Commits

Author SHA1 Message Date
Bill Wendling 5831283cb5 Fix test to work on every platform.
llvm-svn: 86785
2009-11-11 01:41:32 +00:00
Bill Wendling 676f44062e Make sure that the exception handling data has the same visibility as the
function it's generated for.

llvm-svn: 86779
2009-11-11 01:24:59 +00:00
Mike Stump f8a74fc4a5 Add testcase for recent checkin.
llvm-svn: 86620
2009-11-09 23:10:49 +00:00
Nate Begeman 3a313df69b x86 vector shuffle cleanup/fixes:
1. rename the movhp patfrag to movlhps, since thats what it actually matches
2. eliminate the bogus movhps load and store patterns, they were incorrect.  The load transforms are already handled (correctly) by shufps/unpack.
3. revert a recent test change to its correct form.

llvm-svn: 86415
2009-11-07 23:17:15 +00:00
Eric Christopher bd05185ef1 Fix a couple of shuffle patterns to use movhlps instead
of movhps as the constraint.  Changes optimizations so
update testcases as appropriate as well.

llvm-svn: 86360
2009-11-07 08:45:53 +00:00
Chris Lattner 74ab6efbe8 merge cmp1 into cmp0 and filecheckize.
llvm-svn: 86345
2009-11-07 06:19:20 +00:00
Eric Christopher 80f04dc67d Fix PR5315, original patch by Nicolas Capens!
llvm-svn: 86203
2009-11-06 00:11:57 +00:00
Evan Cheng 95bdc5d899 RangeIsDefinedByCopyFromReg() should check for subreg_to_reg, insert_subreg,
and extract_subreg as a "copy" that defines a valno.
Also fixes a typo. These two issues prevent a simple subreg coalescing from
happening before.

llvm-svn: 86022
2009-11-04 08:33:14 +00:00
Evan Cheng f42b5af549 Re-apply 85799. It turns out my code isn't buggy.
llvm-svn: 85947
2009-11-03 21:40:02 +00:00
Kenneth Uildriks 90fedc6ef9 Make opt default to not adding a target data string and update tests that depend on target data to supply it within the test
llvm-svn: 85900
2009-11-03 15:29:06 +00:00
Evan Cheng a8a58efc03 Revert 85799 for now. It might be breaking llvm-gcc driver.
llvm-svn: 85827
2009-11-02 21:49:14 +00:00
Evan Cheng 2729543984 Initilize the machine LICM CSE map upon the first time an instruction is hoisted to
the loop preheader. Add instructions which are already in the preheader block that
may be common expressions of those that are hoisted out. These does get a few more
instructions CSE'ed.

llvm-svn: 85799
2009-11-02 08:09:49 +00:00
Chris Lattner 50ba5c3dc2 improve x86 codegen support for blockaddress. We now compile
the testcase into:

_test1:                                                     ## @test1
## BB#0:                                                    ## %entry
	leaq	L_test1_bb6(%rip), %rax
	jmpq	*%rax
L_test1_bb:                                                 ## Address Taken
LBB1_1:                                                     ## %bb
	movb	$1, %al
	ret
L_test1_bb6:                                                ## Address Taken
LBB1_2:                                                     ## %bb6
	movb	$2, %al
	ret

Note, it is very very strange that BlockAddressSDNode doesn't carry 
around TargetFlags.  Dan, please fix this.

llvm-svn: 85703
2009-11-01 03:25:03 +00:00
Dan Gohman ea88910dbf Add a target triple so that this test behaves consistently across hosts.
llvm-svn: 85640
2009-10-31 00:15:28 +00:00
Dan Gohman 10eed3788d Fix the -mattr line for this test so that it passes on hosts that lack SSSE3.
llvm-svn: 85637
2009-10-30 23:18:27 +00:00
Dan Gohman 49fa51d936 Fix MachineLICM to use the correct virtual register class when
unfolding loads for hoisting.  getOpcodeAfterMemoryUnfold returns the
opcode of the original operation without the load, not the load
itself, MachineLICM needs to know the operand index in order to get
the correct register class. Extend getOpcodeAfterMemoryUnfold to
return this information.

llvm-svn: 85622
2009-10-30 22:18:41 +00:00
Evan Cheng 28f052fc89 I forgot to commit this test.
llvm-svn: 85608
2009-10-30 20:03:40 +00:00
Bob Wilson 3ab552ec74 Reimplement BranchFolding change to avoid tail merging for a 1 instruction
common tail, except when the OptimizeForSize function attribute is present.
Radar 7338114.

llvm-svn: 85441
2009-10-28 22:10:20 +00:00
Dan Gohman 1b44f10ff4 Teach MachineLICM to unfold loads from constant memory from
otherwise unhoistable instructions in order to allow the loads
to be hoisted.

llvm-svn: 85364
2009-10-28 03:21:57 +00:00
Dan Gohman 4b46cbfc23 Mark dead physregdefs dead immediately. This helps MachineSink and
MachineLICM and other things which run before LiveVariables is run.

llvm-svn: 85360
2009-10-28 01:13:53 +00:00
Dan Gohman 75d6a4afd2 Allow constants of different types to share constant pool entries
if they have compatible encodings.

llvm-svn: 85359
2009-10-28 01:12:16 +00:00
David Goodwin 8370485db9 Break anti-dependence breaking out into its own class.
llvm-svn: 85127
2009-10-26 16:59:04 +00:00
Dan Gohman d632f89596 Make LSR's OptimizeShadowIV ignore induction variables with negative
strides for now, because it doesn't handle them correctly. This fixes a
miscompile of SingleSource/Benchmarks/Misc-C++/ray.

This problem was usually hidden because indvars transforms such induction
variables into negations of canonical induction variables.

llvm-svn: 85118
2009-10-26 15:32:57 +00:00
Evan Cheng b81cb2a9a8 - Revert some changes from 85044, 85045, and 85047 that broke x86_64 tests and
bootstrapping. It's not safe to leave identity subreg_to_reg and insert_subreg
  around.
- Relax register scavenging to allow use of partially "not-live" registers. It's
  common for targets to operate on registers where the top bits are undef. e.g.
  s0 =
  d0 = insert_subreg d0<undef>, s0, 1
  ...
     = d0
  When the insert_subreg is eliminated by the coalescer, the scavenger used to
  complain. The previous fix was to keep to insert_subreg around. But that's
  brittle and it's overly conservative when we want to use the scavenger to 
  allocate registers. It's actually legal and desirable for other instructions
  to use the "undef" part of d0. e.g.
  s0 =
  d0 = insert_subreg d0<undef>, s0, 1
  ...
  s1 =
     = s1
     = d0
  We probably need add a "partial-undef" marker on machine operand so the
  machine verifier would not complain.

llvm-svn: 85091
2009-10-26 04:56:07 +00:00
Chris Lattner e38317f432 fix PR5295 where the .ll parser didn't reject a function after a global
or global after a function with conflicting names.  Update some testcases
that were accidentally depending on this behavior.

llvm-svn: 85081
2009-10-25 23:22:50 +00:00
Dan Gohman 4ef112be62 APInt-ify the gep scaling code, so that it correctly handles the case where
the scale overflows pointer-sized arithmetic. This fixes PR5281.

llvm-svn: 84954
2009-10-23 17:57:43 +00:00
Evan Cheng 36f4bd0b62 Update tests for 84931.
llvm-svn: 84932
2009-10-23 05:58:34 +00:00
David Goodwin 02ad4cb32e Allow the target to select the level of anti-dependence breaking that should be performed by the post-RA scheduler. The default is none.
llvm-svn: 84911
2009-10-22 23:19:17 +00:00
Dan Gohman ff97acd8f1 Revert the main portion of r31856. It was causing BranchFolding
to break up CFG diamonds by banishing one of the blocks to the end of
the function, which is bad for code density and branch size.

This does pessimize MultiSource/Benchmarks/Ptrdist/yacr2, the
benchmark cited as the reason for the change, however I've examined
the code and it looks more like a case of gaming a particular
branch than of being generally applicable.

llvm-svn: 84803
2009-10-22 00:03:58 +00:00
Dan Gohman 682a2d154a Revert r84658 and r84691. They were causing llvm-gcc bootstrap to fail.
llvm-svn: 84727
2009-10-21 01:44:44 +00:00
David Goodwin baf6dd26ea Checkpoint more aggressive anti-dependency breaking for post-ra scheduler.
llvm-svn: 84658
2009-10-20 19:54:44 +00:00
Dan Gohman 4a43e3068d Make TranslateX86CC return COND_INVALID instead of aborting when it
encounters an OEQ or UNE comparison, and update its callers to check
for this return status and recover. This fixes a problem resulting from
the LowerOperation hooks being called from LegalizeVectorOps, because
LegalizeVectorOps only lowers vectors, so OEQ and UNE comparisons may
still be at large. This fixes PR5092.

llvm-svn: 84640
2009-10-20 16:22:37 +00:00
Dan Gohman c0964a571b Re-apply r84295, with fixes to how the loop "top" and "bottom" blocks are
tracked. Instead of trying to manually keep track of these locations
while doing complex modifications, just recompute them when they're needed.
This fixes a bug in which the TopMBB and BotMBB were not correctly updated,
leading to invalid transformations.

llvm-svn: 84598
2009-10-20 04:50:37 +00:00
Evan Cheng fa4bcaec7c If the physical register being spilled does not have an interval, spill its sub-registers instead.
llvm-svn: 84586
2009-10-20 01:31:09 +00:00
Anton Korobeynikov 8383c3d7f3 Revert r84295, this unbreaks llvm-gcc bootstrap on x86-64/linux
llvm-svn: 84516
2009-10-19 18:21:09 +00:00
Torok Edwin 033f01c922 Fix PR5247, "lock addq" pattern (and other atomics), it DOES modify EFLAGS.
LLC was scheduling compares before the adds causing wrong branches to be taken
in programs, resulting in misoptimized code wherever atomic adds where used.

llvm-svn: 84485
2009-10-19 11:00:58 +00:00
Nate Begeman 18df82a20c Add support for matching shuffle patterns with palignr.
llvm-svn: 84459
2009-10-19 02:17:23 +00:00
Evan Cheng c436631a9c Turn on post-alloc scheduling for x86.
llvm-svn: 84431
2009-10-18 19:57:27 +00:00
Dan Gohman 0d3d9ee03e Enhance CodePlacementOpt's unconditional intra-loop branch elimination logic
to be more general and understand more varieties of loops.

Teach CodePlacementOpt to reorganize the basic blocks of a loop so that
they are contiguous. This also includes a fair amount of logic for preserving
fall-through edges while doing so. This fixes a BranchFolding-ism where blocks
which can't be made to use a fall-through edge and don't conveniently fit
anywhere nearby get tossed out to the end of the function.

llvm-svn: 84295
2009-10-17 00:32:43 +00:00
Mon P Wang 1a015acf69 Update tests to use FileCheck
llvm-svn: 84282
2009-10-16 22:09:05 +00:00
Mon P Wang 0185b1ea85 Add test case for r84279
llvm-svn: 84280
2009-10-16 22:07:19 +00:00
Dan Gohman 99429a00ff Move zext and sext casts fed by loads into the same block as the
load, to help SelectionDAG fold them into the loads, unless
conditions are unfavorable.

llvm-svn: 84271
2009-10-16 20:59:35 +00:00
Dan Gohman c9af381df8 Make CodePlacementOpt align loops, rather than loop headers. The
header is just the entry block to the loop, and it needn't be at
the top of the loop in the code layout.

Remove the code that suppressed loop alignment for outer loops,
so that outer loops are aligned.

llvm-svn: 84158
2009-10-15 00:36:22 +00:00
Evan Cheng 2f61e0946a When LiveVariables is adding implicit-def to model "partial dead", add the earlyclobber marker if the superreg def has it.
llvm-svn: 84153
2009-10-14 23:39:27 +00:00
Dan Gohman 03a7667349 Fix this test to account for a movl $0 being emitted as an xor now,
and convert it to FileCheck.

llvm-svn: 84065
2009-10-14 00:28:48 +00:00
Dan Gohman a698d7ac3c Don't forget to mark RAX as live-out of the function when arranging for
it to hold the address of an sret return value, for x86-64 ABI purposes.

Also, fix the test that was originally intended to test this to actually
test it, using FileCheck.

llvm-svn: 83853
2009-10-12 16:36:12 +00:00
Dan Gohman 7d9dffb413 Fix the x86 test-shrink optimization so that it doesn't shrink comparisons
when one of the bits being tested would end up being the sign bit in the
narrower type, and a signed comparison is being performed, since this would
change the result of the signed comparison. This fixes PR5132.

llvm-svn: 83670
2009-10-09 20:35:19 +00:00
Evan Cheng ccd4545ecb Fix a logic error that caused non-rematable loop invariants loads to be licm'ed out of loop.
llvm-svn: 83622
2009-10-09 06:21:52 +00:00
Evan Cheng be27d61cbc Reset kill markers after live interval is reconstructed.
llvm-svn: 83608
2009-10-09 01:17:11 +00:00
Dale Johannesen e32fe29d29 Fix handling of x86 'R' constraint.
llvm-svn: 83499
2009-10-07 22:47:20 +00:00