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43192 Commits

Author SHA1 Message Date
Chris Lattner 92f4702254 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.

llvm-svn: 50408
 2008-04-29 06:56:02 +00:00
Owen Anderson 304ef22f6e Clarify what we mean by a dead loop. 
llvm-svn: 50406
 2008-04-29 06:34:55 +00:00
Chris Lattner 141d2dfd43 new testcase for PR2094. The inline asms should not pin allocas to the 
stack anymore.

llvm-svn: 50397
 2008-04-29 05:53:29 +00:00
Ted Kremenek a374ea9a35 Update typestate logic to support GC-mode. 
llvm-svn: 50396
 2008-04-29 05:44:10 +00:00
Ted Kremenek 4b7ca776cf Implement semantics of CFMakeCollectable for the CF-reference count checker. 
llvm-svn: 50395
 2008-04-29 05:33:51 +00:00
Ted Kremenek 4d1f422c6f Provide the option to run the CF-retain checker in GC enabled mode. 
The transfer functions for the checker don't do anything special yet in GC mode.

llvm-svn: 50394
 2008-04-29 05:13:59 +00:00
Chris Lattner e331a65c79 don't delete the last store to an alloca if the store is volatile. 
llvm-svn: 50390
 2008-04-29 04:58:38 +00:00
Chris Lattner 5c88f7b1ad 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.

llvm-svn: 50389
 2008-04-29 04:48:56 +00:00
Ted Kremenek 25a3b878e5 Convert CFLF to LF. CRLF was causing this test to fail under Mac OS X. 
llvm-svn: 50388
 2008-04-29 04:43:50 +00:00
Ted Kremenek d796c18d7b Add -fobjc-gc and -fobjc-gc-only options to the driver. 
Add corresponding enum in LangOptions.

llvm-svn: 50387
 2008-04-29 04:37:03 +00:00
Chris Lattner f9a49c4322 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.

llvm-svn: 50386
 2008-04-29 04:29:54 +00:00
Evan Cheng 11b98b6612 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.

llvm-svn: 50385
 2008-04-29 01:41:44 +00:00
Owen Anderson 586216e5bb Add some more comments. 
llvm-svn: 50384
 2008-04-29 00:45:15 +00:00
Owen Anderson 41377175d3 Remove debugging code. 
llvm-svn: 50383
 2008-04-29 00:39:24 +00:00
Owen Anderson 94ad702412 Add dead loop elimination, which removes dead loops for which we can compute 
the trip count.

llvm-svn: 50382
 2008-04-29 00:38:34 +00:00
Evan Cheng 73c3b4741a Add -march=x86. 
llvm-svn: 50380
 2008-04-28 23:31:41 +00:00
Dan Gohman c73845b387 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.

llvm-svn: 50379
 2008-04-28 23:26:22 +00:00
Evan Cheng 315e3cb9a3 Test case. 
llvm-svn: 50377
 2008-04-28 22:14:34 +00:00
Evan Cheng b96782ecbd 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.

llvm-svn: 50376
 2008-04-28 22:07:13 +00:00
Anton Korobeynikov 5bf6876ab8 Correct parameter attributes encoding for C bindings. 
Patch by Anders Johnsen!

llvm-svn: 50375
 2008-04-28 21:48:04 +00:00
Anton Korobeynikov c53565c479 Add possibility of using arbitrary to to execute stuff from bugpoint. 
Patch by Pekka Jääskeläinen!

llvm-svn: 50373
 2008-04-28 20:53:48 +00:00
Dan Gohman f06226f506 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.

llvm-svn: 50372
 2008-04-28 20:25:15 +00:00
Dan Gohman 8cb19d967f Fix DSE to not eliminate volatile loads with no uses. 
llvm-svn: 50370
 2008-04-28 19:51:27 +00:00
Dale Johannesen adc322bb6d Don't try to convert PPC long double. 
llvm-svn: 50369
 2008-04-28 19:46:58 +00:00
Dan Gohman c968c1f592 Evan pointed out that folding sext to zext may not be correct 
if the zext is not legal.

llvm-svn: 50368
 2008-04-28 18:47:17 +00:00
Dan Gohman 77ce6da378 Delete an unused constructor. 
llvm-svn: 50367
 2008-04-28 18:28:49 +00:00
Dan Gohman d961d30b7f Add a comment to CreateRegForValue that clarifies the handling of 
aggregate types.

llvm-svn: 50366
 2008-04-28 18:19:43 +00:00
Dan Gohman 80c692d439 Rewrite the comments for RegsForValue and its members, and 
reorder some of the members for clarity.

llvm-svn: 50365
 2008-04-28 18:10:39 +00:00
Ted Kremenek 6065ef6b9b Bug fix in CFG::getBlockEdgeImpl(): Use a BumpPtrAllocator to allocate 
std::pair<CFGBlock*, CFGBlock*> that have an 8-byte alignment for use with
ProgramPoint. This fixes a bug reported by Argiris where using std::set<> on
Windows would result in a 4-byte alignment, not an 8-byte alignment.

Fixes: <rdar://problem/5892265>
llvm-svn: 50364
 2008-04-28 18:00:46 +00:00
Ted Kremenek f592efe3f5 Add more alignment enums. 
llvm-svn: 50363
 2008-04-28 17:58:20 +00:00
Ted Kremenek e51f22986b 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. 
llvm-svn: 50362
 2008-04-28 17:58:07 +00:00
Dan Gohman 14a05df97b Don't call size() on each iteration of the loop. 
llvm-svn: 50361
 2008-04-28 17:42:03 +00:00
Gordon Henriksen 2d9cc2197a Expose parameter attributes via C bindings. 
Patch by Anders Johnsen!

llvm-svn: 50360
 2008-04-28 17:37:06 +00:00
Dan Gohman da44054867 Fix the SVOffset values for loads and stores produced by 
memcpy/memset expansion. It was a bug for the SVOffset value
to be used in the actual address calculations.

llvm-svn: 50359
 2008-04-28 17:15:20 +00:00
Dan Gohman 72ec3f4562 Teach InstCombine's ComputeMaskedBits what SelectionDAG's 
ComputeMaskedBits knows about cttz, ctlz, and ctpop. Teach
SelectionDAG's ComputeMaskedBits what InstCombine's knows
about SRem. And teach them both some things about high bits
in Mul, UDiv, URem, and Sub. This allows instcombine and
dagcombine to eliminate sign-extension operations in
several new cases.

llvm-svn: 50358
 2008-04-28 17:02:21 +00:00
Dan Gohman 3eb10f758e Teach DAGCombine to convert (sext x) to (zext x) when the 
sign-bit of x is known to be zero.

llvm-svn: 50357
 2008-04-28 16:58:24 +00:00
Mikhail Glushenkov 5653d3bc48 Add support for response files to the CommandLine library. 
llvm-svn: 50355
 2008-04-28 16:44:25 +00:00
Anton Korobeynikov fac70f2f44 Fix FP return for Win64 ABI 
llvm-svn: 50342
 2008-04-28 07:40:07 +00:00
Chris Lattner c9e280c78a Another collection of random cleanups. No functionality change. 
llvm-svn: 50341
 2008-04-28 07:16:35 +00:00
Chris Lattner 52504e78fb Remove the SmallVector ctor that converts from a SmallVectorImpl. This 
conversion open the door for many nasty implicit conversion issues, and
can be easily solved by initializing with (V.begin(), V.end()) when 
needed.

This patch includes many small cleanups for sdisel also.

llvm-svn: 50340
 2008-04-28 06:44:42 +00:00
Chris Lattner d03f4516cf restore the copy ctor in SmallVector. This fixes serious 
errors I introduced in my last patch.

llvm-svn: 50338
 2008-04-28 06:32:08 +00:00
Chris Lattner 8c7f5ad968 switch RegsForValue::Regs to be a SmallVector to avoid 
heap thrash on tiny (usually single-element) vectors.

llvm-svn: 50335
 2008-04-28 06:02:19 +00:00
Chris Lattner 84836144d9 generalize SmallVector copy ctor, there is no requirement for 
the initialization vector to have the same fixed size, just the
same element type.

llvm-svn: 50334
 2008-04-28 06:01:06 +00:00
Chris Lattner 8be72700b8 Fix PR2256, yet another miscompilation in simplifycfg of i 
multiple return values.

Bill, please pull this into Tak.

llvm-svn: 50332
 2008-04-28 00:19:07 +00:00
Chris Lattner 7855a5cb70 several multiple-retval fixes for bugpoint. 
llvm-svn: 50331
 2008-04-28 00:04:58 +00:00
Chris Lattner d04b818a91 move static function out of anon namespace, no functionality change. 
llvm-svn: 50330
 2008-04-27 23:48:12 +00:00
Chris Lattner 122721843b Another step to getting multiple result inline asm to work. 
llvm-svn: 50329
 2008-04-27 23:44:28 +00:00
Chris Lattner 10748d8edd Allow asms to return multiple results by value. 
llvm-svn: 50328
 2008-04-27 23:33:55 +00:00
Anton Korobeynikov e183b3cd76 Properly lower vararg's FORMAL_ARGUMENTS node on win64 
llvm-svn: 50325
 2008-04-27 23:15:03 +00:00
Anton Korobeynikov b5096e9c73 Handle fp80 for win64 
llvm-svn: 50324
 2008-04-27 22:54:09 +00:00