Commit Graph

20886 Commits

Author SHA1 Message Date
Ted Kremenek
f64903b7d8 Fixed subtle bug in Deserializer::JumpTo when jumping when the block-nesting
information matching did not exactly match the underlying stream's scoping
information.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44470 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-30 22:45:05 +00:00
Evan Cheng
cddbb83ea8 Do not fold reload into an instruction with multiple uses. It issues one extra load.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44467 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-30 21:23:43 +00:00
Chris Lattner
cd883f203d chain update requests properly.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44460 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-30 18:52:58 +00:00
Duncan Sands
6bb0ae4711 Small optimization of parameter attribute lookup.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44458 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-30 18:20:58 +00:00
Duncan Sands
757d243167 Add a convenience method for modifying parameter
attributes.  While there, I noticed that not all
attribute methods returned a pointer-to-constant,
so I fixed that.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44457 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-30 18:19:18 +00:00
Duncan Sands
a8b974648f Check that there are not more attributes than
function parameters.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44452 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-30 15:52:20 +00:00
Devang Patel
962e0750a5 Provide a way to update DescGlobals cache directly.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44446 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-30 00:51:33 +00:00
Evan Cheng
cb3c330d39 Do not lose rematerialization info when spilling already split live intervals.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44443 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-29 23:02:50 +00:00
Owen Anderson
1fb136464d Fix a miscompilation in spiff on PPC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44437 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-29 18:02:22 +00:00
Evan Cheng
1953d0cb7d Fix a major performance issue with splitting. If there is a def (not def/use)
in the middle of a split basic block, create a new live interval starting at
the def. This avoid artifically extending the live interval over a number of
cycles where it is dead. e.g.

bb1:
       = vr1204   (use / kill) <= new interval starts and ends here.
...
...
vr1204 =          (new def)   <= start a new interval here.
       = vr1204   (use)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44436 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-29 10:12:14 +00:00
Evan Cheng
c3fc7d9ec9 Replace the odd kill# hack with something less fragile.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44434 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-29 09:49:23 +00:00
Duncan Sands
fd8890dbee Small parameter attributes cleanup.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44433 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-29 08:30:15 +00:00
Evan Cheng
0cbb1164b3 Fixed various live interval splitting bugs / compile time issues.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44428 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-29 01:06:25 +00:00
Evan Cheng
c3868e04bf Kill info update bug.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44427 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-29 01:05:47 +00:00
Chris Lattner
4045e6db8c Work around a GCC bug, producing this code:
unsigned char *llvm_cbe_X;
...
  llvm_cbe_X = 0; *((void**)&llvm_cbe_X) = __builtin_stack_save();

instead of:

  llvm_cbe_X = __builtin_stack_save();

See PR1809 for details.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44415 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-28 21:26:17 +00:00
Chris Lattner
1f87300326 Implement ExpandOperationResult for ppc i64 fp->int, which fixes
CodeGen/Generic/fp_to_int.ll among others.  Its unclear why this 
just started failing...


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44407 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-28 18:44:47 +00:00
Chris Lattner
5e037fce2b for consistency, allow a fallthrough if the final check returns null.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44406 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-28 18:30:18 +00:00
Duncan Sands
afa3b6da11 Add some convenience methods for querying attributes, and
use them.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44403 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-28 17:07:01 +00:00
Duncan Sands
dd65a73af4 My compiler complains that "x always evaluates to true"
in this call:

	Result.IntVal = APInt(80, 2, x);

What is x?

	uint16_t x[8];

I deduce that the APInt constructor being used is this one:

  APInt(uint32_t numBits, uint64_t val, bool isSigned = false);

rather than this one:

  APInt(uint32_t numBits, uint32_t numWords, const uint64_t bigVal[]);

That doesn't seem right!  This fix compiles but is otherwise completely
untested.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44400 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-28 10:36:19 +00:00
Duncan Sands
0a488b320c Add missing newlines at EOF.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44399 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-28 10:13:38 +00:00
Evan Cheng
cada245d06 Recover compile time regression.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44386 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-28 01:28:46 +00:00
Owen Anderson
e4ad9c70e4 Add MachineLoopInfo. This is not yet tested.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44384 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-27 22:47:08 +00:00
Chris Lattner
a3f61df4ff several entries got significantly better, though they still aren't done.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44382 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-27 22:41:52 +00:00
Chris Lattner
f1b1c5ed1a implement a trivial readme entry.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44380 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-27 22:36:16 +00:00
Chris Lattner
789db09cde Fix a crash on invalid code due to memcpy lowering.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44378 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-27 22:14:42 +00:00
Chris Lattner
a8d700138a Make this actually work on systems that support ppc long double.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44374 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-27 20:45:25 +00:00
Chris Lattner
1c8f374a3b Unbreak all of the darwin/ppc32 JIT failures having to do
with not being able to find printf.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44373 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-27 20:41:32 +00:00
Nate Begeman
d73ab8884f Support returning non-power-of-2 vectors to unblock some work
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44371 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-27 19:28:48 +00:00
Andrew Lenharth
19914ed97f something wrong with this opt
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44370 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-27 18:31:30 +00:00
Chris Lattner
a1afde77fa Unbreak backwards compatibility with bytecode format. Regression
introduced by this patch:
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20071126/055824.html



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44364 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-27 17:48:06 +00:00
Duncan Sands
dc024674ff Fix PR1146: parameter attributes are longer part of
the function type, instead they belong to functions
and function calls.  This is an updated and slightly
corrected version of Reid Spencer's original patch.
The only known problem is that auto-upgrading of
bitcode files doesn't seem to work properly (see
test/Bitcode/AutoUpgradeIntrinsics.ll).  Hopefully
a bitcode guru (who might that be? :) ) will fix it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44359 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-27 13:23:08 +00:00
Chris Lattner
b3d9cdb677 err, no really.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44352 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-27 06:14:32 +00:00
Chris Lattner
5ebfaa2c9d don't depend on ADL.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44351 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-27 06:14:12 +00:00
Owen Anderson
d735ee85db Make LoopInfoBase more generic, in preparation for having MachineLoopInfo. This involves a small interface change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44348 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-27 03:43:35 +00:00
Dan Gohman
77003040b2 Don't lower srem/urem X%C to X-X/C*C unless the division is actually
optimized. This avoids creating illegal divisions when the combiner is
running after legalize; this fixes PR1815. Also, it produces better
code in the included testcase by avoiding the subtract and multiply
when the division isn't optimized.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44341 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-26 23:46:11 +00:00
Owen Anderson
a16bbc9aa7 Fix another bug that was causing siod to fail.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44325 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-26 07:17:19 +00:00
Owen Anderson
97d4e51df1 Fix a silly bug that Nicholas noticed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44324 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-26 03:27:38 +00:00
Owen Anderson
00a6d1448d Allow GVN to eliminate read-only function calls when it can detect that they are redundant.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44323 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-26 02:26:36 +00:00
Anton Korobeynikov
fd94dd58ff Remove another leak. Due to some reason AliasSetTracker didn't had any dtor...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44320 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-25 23:52:02 +00:00
Nick Lewycky
c54c561c9f Add new SCEV, SCEVSMax. This allows LLVM to analyze do-while loops.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44319 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-25 22:41:31 +00:00
Chris Lattner
cfa597569d Implement PR1822
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44318 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-25 21:27:53 +00:00
Duncan Sands
827cde1c83 Fix PR1816. If a bitcast of a function only exists because of a
trivial difference in function attributes, allow calls to it to
be converted to direct calls.  Based on a patch by Török Edwin.
While there, move the various lists of mutually incompatible
parameters etc out of the verifier and into ParameterAttributes.h.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44315 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-25 14:10:56 +00:00
Chris Lattner
8a594489bf Fix a long standing deficiency in the X86 backend: we would
sometimes emit "zero" and "all one" vectors multiple times,
for example:

_test2:
	pcmpeqd	%mm0, %mm0
	movq	%mm0, _M1
	pcmpeqd	%mm0, %mm0
	movq	%mm0, _M2
	ret

instead of:

_test2:
	pcmpeqd	%mm0, %mm0
	movq	%mm0, _M1
	movq	%mm0, _M2
	ret

This patch fixes this by always arranging for zero/one vectors
to be defined as v4i32 or v2i32 (SSE/MMX) instead of letting them be
any random type.  This ensures they get trivially CSE'd on the dag.
This fix is also important for LegalizeDAGTypes, as it gets unhappy
when the x86 backend wants BUILD_VECTOR(i64 0) to be legal even when
'i64' isn't legal.

This patch makes the following changes:

1) X86TargetLowering::LowerBUILD_VECTOR now lowers 0/1 vectors into
   their canonical types.
2) The now-dead patterns are removed from the SSE/MMX .td files.
3) All the patterns in the .td file that referred to immAllOnesV or
   immAllZerosV in the wrong form now use *_bc to match them with a
   bitcast wrapped around them.
4) X86DAGToDAGISel::SelectScalarSSELoad is generalized to handle 
   bitcast'd zero vectors, which simplifies the code actually.
5) getShuffleVectorZeroOrUndef is updated to generate a shuffle that
   is legal, instead of generating one that is illegal and expecting
   a later legalize pass to clean it up.
6) isZeroShuffle is generalized to handle bitcast of zeros.
7) several other minor tweaks.

This patch is definite goodness, but has the potential to cause random
code quality regressions.  Please be on the lookout for these and let 
me know if they happen.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44310 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-25 00:24:49 +00:00
Chris Lattner
c58d558a79 Implement expand support for MERGE_VALUEs that only produces one result.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44304 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-24 19:12:15 +00:00
Chris Lattner
ffc04d3e4f add a immAllZerosV_bc pattern fragment for consistency with others.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44303 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-24 19:02:07 +00:00
Chris Lattner
0a32092103 remove bogus assertion that broke CodeGen/Generic/cast-fp.ll on x86
among others.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44302 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-24 18:37:20 +00:00
Chris Lattner
87726ac0f9 Implement support for custom legalization in DAGTypeLegalizer::ExpandOperand.
Improve a comment.
Unbreak Duncan's carefully written path compression where I didn't realize
what was happening!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44301 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-24 18:11:42 +00:00
Chris Lattner
27a6c7380f Several changes:
1) Change the interface to TargetLowering::ExpandOperationResult to 
   take and return entire NODES that need a result expanded, not just
   the value.  This allows us to handle things like READCYCLECOUNTER,
   which returns two values.
2) Implement (extremely limited) support in LegalizeDAG::ExpandOp for MERGE_VALUES.
3) Reimplement custom lowering in LegalizeDAGTypes in terms of the new
   ExpandOperationResult.  This makes the result simpler and fully 
   general.
4) Implement (fully general) expand support for MERGE_VALUES in LegalizeDAGTypes.
5) Implement ExpandOperationResult support for ARM f64->i64 bitconvert and ARM
   i64 shifts, allowing them to work with LegalizeDAGTypes.
6) Implement ExpandOperationResult support for X86 READCYCLECOUNTER and FP_TO_SINT,
   allowing them to work with LegalizeDAGTypes.

LegalizeDAGTypes now passes several more X86 codegen tests when enabled and when
type legalization in LegalizeDAG is ifdef'd out.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44300 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-24 07:07:01 +00:00
Chris Lattner
94613166b7 add a note
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44299 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-24 06:13:33 +00:00
Chris Lattner
9e513acd31 Fix PR1816, by correcting the broken definition of APInt::countTrailingZeros.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44296 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-23 22:42:31 +00:00