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Author SHA1 Message Date
Dan Gohman
c1c27c9fda Fix a typo in a comment. 
llvm-svn: 46507
 2008-01-29 12:06:33 +00:00
Dan Gohman
522401f26e Add explicit keywords. 
llvm-svn: 46506
 2008-01-29 11:36:12 +00:00
Chris Lattner
f898e3cc8f llvm.sqrt(-0.0) is defined. 
llvm-svn: 46500
 2008-01-29 07:00:44 +00:00
Chris Lattner
83f411c586 eliminate additions of 0.0 when they are obviously dead. This has to be careful to 
avoid turning -0.0 + 0.0 -> -0.0 which is incorrect.

llvm-svn: 46499
 2008-01-29 06:52:45 +00:00
Owen Anderson
2688087c9c Add a testcase for eliminating memcpy's at the end of functions. Forgot to commit this with my last commit. 
llvm-svn: 46497
 2008-01-29 06:40:32 +00:00
Chris Lattner
35f063e37c Add target triples to these so they don't fail on linux. 
llvm-svn: 46496
 2008-01-29 06:26:07 +00:00
Duncan Sands
390baa691d Use getPreferredAlignmentLog or getPreferredAlignment 
to get the alignment of global variables, rather than
using hand-made versions.

llvm-svn: 46495
 2008-01-29 06:23:44 +00:00
Owen Anderson
96b9e5423a Add support for eliminating memcpy's at the end of functions. Also fix some errors I noticed in 
the handling of eliminating stores to byval arguments.

llvm-svn: 46494
 2008-01-29 06:18:36 +00:00
Duncan Sands
47bcca5cea This would be better done as an executable test. 
llvm-svn: 46493
 2008-01-29 06:04:54 +00:00
Duncan Sands
84bc852b52 After recent changes we fail to optimize this test 
sufficiently to have it pass.  I'm removing it from
the testsuite and adding it to PR452 instead.

llvm-svn: 46492
 2008-01-29 05:57:23 +00:00
Owen Anderson
fc41146d15 RegAllocBigBlock doesn't need LiveVariables either. 
llvm-svn: 46488
 2008-01-29 02:32:13 +00:00
Scott Michel
81b8a391a6 Fix to bug 1951: tblgen gratuitously renames variables when no temporary was 
generated. This feature would only show up in fairly complex patterns, such
as this one in CellSPU:

  def : Pat<(add (SPUhi tconstpool:$in, 0), (SPUlo tconstpool:$in, 0)),
	    (IOHLlo (ILHUhi tconstpool:$in), tconstpool:$in)>;

which generated the following emit code:

SDNode *Emit_0(const SDOperand &N, unsigned Opc0, unsigned Opc1, MVT::ValueType VT0, MVT::ValueType VT1) DISABLE_INLINE {
  SDOperand N0 = N.getOperand(0);
  SDOperand N00 = N0.getOperand(0);
  SDOperand N01 = N0.getOperand(1);
  SDOperand N1 = N.getOperand(1);
  SDOperand N10 = N1.getOperand(0);
  SDOperand N11 = N1.getOperand(1);
  SDOperand Tmp3(CurDAG->getTargetNode(Opc0, VT0, N00), 0);
  return CurDAG->SelectNodeTo(N.Val, Opc1, VT1, Tmp3, Tmp2); /* Tmp2 s/b N00 */
}

Tested against the test suites without incident.

llvm-svn: 46487
 2008-01-29 02:29:31 +00:00
Nate Begeman
3eeac138f9 Properly expand extract-element for non-power-of-2 codegen 
llvm-svn: 46486
 2008-01-29 02:24:00 +00:00
Dale Johannesen
f12104ce4b Handle 'X' constraint in asm's better. 
llvm-svn: 46485
 2008-01-29 02:21:21 +00:00
Devang Patel
86ff705c22 Filter loops that subtract induction variables. 
These loops are not yet handled.

Fix PR 1912.

llvm-svn: 46484
 2008-01-29 02:20:41 +00:00
Scott Michel
dc780aeb57 Overhaul Cell SPU's addressing mode internals so that there are now 
only two addressing mode nodes, SPUaform and SPUindirect (vice the
three previous ones, SPUaform, SPUdform and SPUxform). This improves
code somewhat because we now avoid using reg+reg addressing when
it can be avoided. It also simplifies the address selection logic,
which was the main point for doing this.

Also, for various global variables that would be loaded using SPU's
A-form addressing, prefer D-form offs[reg] addressing, keeping the
base in a register if the variable is used more than once.

llvm-svn: 46483
 2008-01-29 02:16:57 +00:00
Devang Patel
51fde22367 New test. 
llvm-svn: 46479
 2008-01-29 01:10:04 +00:00
Bill Wendling
839e21bce4 Add test to make sure that #pragma mark/error doesn't error if there are 
unbalanced quotes.

llvm-svn: 46476
 2008-01-29 00:41:29 +00:00
Ted Kremenek
752475ffa1 Added destructor for template class FoldingSetNodeWrapper. 
Added getValue() to FoldingSetNodeWrapper.

llvm-svn: 46465
 2008-01-28 22:05:23 +00:00
Lauro Ramos Venancio
ad2a3eb416 Simplify the code and fix a typo. 
llvm-svn: 46458
 2008-01-28 20:02:51 +00:00
Duncan Sands
93f785a638 Pure/const functions with ByVal parameters cannot 
be marked readonly either.

llvm-svn: 46456
 2008-01-28 19:25:47 +00:00
Lauro Ramos Venancio
947e17ae75 Fix fpcmp infinite loop when comparing "29-266" with "29-268". 
llvm-svn: 46455
 2008-01-28 18:23:23 +00:00
Chris Lattner
20854cf4e7 this test is now compiled into the right thing. 
llvm-svn: 46454
 2008-01-28 17:38:46 +00:00
Duncan Sands
069f3f7631 Unbreak builds with differing object and source 
directories.  Patch by Sam Bishop.

llvm-svn: 46453
 2008-01-28 17:38:30 +00:00
Duncan Sands
ecab334ce0 Make this more likely to be passed byval. 
llvm-svn: 46451
 2008-01-28 10:35:11 +00:00
Bill Wendling
5b6f587a80 If the function has no machine instructions, then emit a "nop" so that 
the function label isn't associated with something it shouldn't be.

llvm-svn: 46449
 2008-01-28 09:15:03 +00:00
Chris Lattner
dc0c4352bd Transform calls to memcpy into llvm.memcpy calls, patch by Eli Friedman. 
llvm-svn: 46433
 2008-01-28 04:41:43 +00:00
Chris Lattner
01aaf36663 reduce duplicate -I flags passed to the compiler, cleaning up the VERBOSE 
output.  Patch contributed by Sam Bishop!

llvm-svn: 46432
 2008-01-28 04:18:41 +00:00
Nick Lewycky
6b070b1b93 Handle some more combinations of extend and icmp. Fixes PR1940. 
llvm-svn: 46431
 2008-01-28 03:48:02 +00:00
Chris Lattner
359756ea4b Fix PR1932 by disabling an xform invalid for fdiv. 
llvm-svn: 46429
 2008-01-28 00:58:18 +00:00
Chris Lattner
ff2b9ef01b make handling of overflow and undefined results much more clear. 
Patch by Eli Friedman, thanks!

llvm-svn: 46428
 2008-01-28 00:36:27 +00:00
Chris Lattner
7250586ec9 Fix PR1938 by forcing the code that uses an undefined value to branch one 
way or the other.  Rewriting the code itself prevents subsequent analysis
passes from making contradictory conclusions about the code that could 
cause an infeasible path to be made feasible.

llvm-svn: 46427
 2008-01-28 00:32:30 +00:00
Chris Lattner
724cda19dc Always for PACKAGEVERSION to 'mainline' for teh llvm web page. 
llvm-svn: 46425
 2008-01-27 23:43:26 +00:00
Chris Lattner
26ec133a4d Fix PowerPC/./2007-10-18-PtrArithmetic.ll 
llvm-svn: 46424
 2008-01-27 23:32:17 +00:00
Chris Lattner
26a8116f49 Update this test. Due to dag combiner improvements, we now compile 
f7/f11 to:

_f7:
	eor r0, r0, #2, 2 @ -2147483648
	bx lr
_f11:
	bic r0, r0, #2, 2 @ -2147483648
	bx lr

instead of:

_f7:
	fmsr s0, r0
	fnegs s0, s0
	fmrs r0, s0
	bx lr

_f11:
	fmsr s0, r0
	fabss s0, s0
	fmrs r0, s0
	bx lr

llvm-svn: 46423
 2008-01-27 23:26:37 +00:00
Chris Lattner
3d4fa8f00f fix a crash on CodeGen/X86/vector-rem.ll 
llvm-svn: 46422
 2008-01-27 23:21:58 +00:00
Chris Lattner
8354bf8cfb Add support for frameworks. Patch by Shantonu Sen! 
llvm-svn: 46421
 2008-01-27 22:58:59 +00:00
Owen Anderson
1078560f26 Reg alloc doesn't really need LiveVariables. 
llvm-svn: 46420
 2008-01-27 22:00:00 +00:00
Owen Anderson
7ad72080a6 Fixes for BreakCriticalMachineCodeEdge by Fernando. 
llvm-svn: 46419
 2008-01-27 19:51:03 +00:00
Nick Lewycky
cd28ef8950 Be more careful modifying the use_list while also iterating through it. 
llvm-svn: 46417
 2008-01-27 18:35:00 +00:00
Duncan Sands
e77256b325 Revert r46393: readonly/readnone functions are no 
longer allowed to write through byval arguments.

llvm-svn: 46416
 2008-01-27 18:12:58 +00:00
Chris Lattner
2ab1fd3824 Implement some dag combines that allow doing fneg/fabs/fcopysign in integer 
registers if used by a bitconvert or using a bitconvert.  This allows us to
avoid constant pool loads and use cheaper integer instructions when the
values come from or end up in integer regs anyway.  For example, we now 
compile CodeGen/X86/fp-in-intregs.ll to:

_test1:
	movl	$2147483648, %eax
	xorl	4(%esp), %eax
	ret
_test2:
	movl	$1065353216, %eax
	orl	4(%esp), %eax
	andl	$3212836864, %eax
	ret

Instead of:
_test1:
	movss	4(%esp), %xmm0
	xorps	LCPI2_0, %xmm0
	movd	%xmm0, %eax
	ret
_test2:
	movss	4(%esp), %xmm0
	andps	LCPI3_0, %xmm0
	movss	LCPI3_1, %xmm1
	andps	LCPI3_2, %xmm1
	orps	%xmm0, %xmm1
	movd	%xmm1, %eax
	ret

bitconverts can happen due to various calling conventions that require
fp values to passed in integer regs in some cases, e.g. when returning
a complex.

llvm-svn: 46414
 2008-01-27 17:42:27 +00:00
Chris Lattner
39c52e030b add a note 
llvm-svn: 46413
 2008-01-27 07:31:41 +00:00
Chris Lattner
f4bc2c5718 Use fldz and fld1 for long double constants instead of a constant pool load. 
llvm-svn: 46411
 2008-01-27 06:19:31 +00:00
Chris Lattner
9c66a1b961 make isExactlyValue work for long double. 
llvm-svn: 46410
 2008-01-27 06:19:08 +00:00
Bill Wendling
0e2b8c2c45 The CorrelatedExpressions pass is now no more. 
llvm-svn: 46409
 2008-01-27 06:13:32 +00:00
Bill Wendling
629a569ce9 The CorrelatedExpressionElimination pass is known to be buggy. Remove it. 
This fixes PR1769.

llvm-svn: 46408
 2008-01-27 06:11:41 +00:00
Chris Lattner
f93e3d7dd7 For long double constants, print an approximation of their value to the .s file to make it easier to read. 
llvm-svn: 46407
 2008-01-27 06:09:28 +00:00
Chris Lattner
aa553aa0c1 Fold fptrunc(add (fpextend x), (fpextend y)) -> add(x,y), as GCC does. 
llvm-svn: 46406
 2008-01-27 05:29:54 +00:00
Chris Lattner
00183edf55 Add some notes. 
llvm-svn: 46405
 2008-01-26 20:12:07 +00:00