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Author SHA1 Message Date
Chris Lattner
f8e408b7b1 Codegen: 
as:

_bar:
	pushl	%esi
	subl	$8, %esp
	movl	16(%esp), %esi
	call	L_foo$stub
	fstps	(%esi)
	addl	$8, %esp
	popl	%esi
	#FP_REG_KILL
	ret

instead of:

_bar:
	pushl	%esi
	subl	$8, %esp
	movl	16(%esp), %esi
	call	L_foo$stub
	fstpl	(%esi)
	cvtsd2ss	(%esi), %xmm0
	movss	%xmm0, (%esi)
	addl	$8, %esp
	popl	%esi
	#FP_REG_KILL
	ret

llvm-svn: 45401
 2007-12-29 06:57:38 +00:00
Chris Lattner
78ae7ff876 don't fold fp_round(fp_extend(load)) -> fp_round(extload) 
llvm-svn: 45400
 2007-12-29 06:55:23 +00:00
Chris Lattner
e3515220d2 avoid going through a stack slot to convert from fpstack to xmm reg 
if we are just going to store it back anyway.  This improves things 
like:
double foo();
void bar(double *P) { *P = foo(); }

llvm-svn: 45399
 2007-12-29 06:41:28 +00:00
Chris Lattner
7cb2de8e48 Delete a store whose input is a load from the same pointer: 
x = load p
  store x -> p

llvm-svn: 45398
 2007-12-29 06:26:16 +00:00
Chris Lattner
ac72965e02 add a note 
llvm-svn: 45397
 2007-12-29 05:51:58 +00:00
Chris Lattner
78c7878ca4 expand note. 
llvm-svn: 45393
 2007-12-29 01:05:01 +00:00
Chris Lattner
2369d2f4ab dead calls to llvm.stacksave can be deleted, even though they 
have potential side-effects.

llvm-svn: 45392
 2007-12-29 00:59:12 +00:00
Chris Lattner
e26989231e upgrade this test 
llvm-svn: 45391
 2007-12-29 00:57:06 +00:00
Devang Patel
d601ada369 Test -simplifycfg only. 
llvm-svn: 45389
 2007-12-28 22:59:48 +00:00
Chris Lattner
b8e060f7a6 add a note. 
llvm-svn: 45388
 2007-12-28 22:30:05 +00:00
Chris Lattner
2248a22bda add a note. 
llvm-svn: 45387
 2007-12-28 21:50:40 +00:00
Owen Anderson
ddb5d73f0a Add a testcase for my recent InstCombine fix, written by Nicholas. 
llvm-svn: 45386
 2007-12-28 21:08:43 +00:00
Owen Anderson
ebd3e9c500 Repair a transform that Chris noticed a bug in. Thanks to Nicholas for pointing out my stupid mistakes when writing this patch. :-) 
llvm-svn: 45384
 2007-12-28 07:42:12 +00:00
Chris Lattner
2456399ce5 disable this instcombine xform, it miscompiles: 
define i32 @main() {
entry:
	%z = alloca i32		; <i32*> [#uses=2]
	store i32 0, i32* %z
	%tmp = load i32* %z		; <i32> [#uses=1]
	%sub = sub i32 %tmp, 1		; <i32> [#uses=1]
	%cmp = icmp ult i32 %sub, 0		; <i1> [#uses=1]
	%retval = select i1 %cmp, i32 1, i32 0		; <i32> [#uses=1]
	ret i32 %retval
}

into ret 1, instead of ret 0.

Christopher, please investigate.

llvm-svn: 45383
 2007-12-28 06:24:31 +00:00
Chris Lattner
e53df84267 add a note 
llvm-svn: 45377
 2007-12-28 04:42:05 +00:00
Anton Korobeynikov
f12327cd32 Ignore functions with internal linkages during linking. This snipped mimics the 
behaviour of LinkGlobals() function.

llvm-svn: 45375
 2007-12-27 23:21:57 +00:00
Gordon Henriksen
86e98275ff Adding bindings for target triple and data layout. 
llvm-svn: 45369
 2007-12-27 20:13:47 +00:00
Gordon Henriksen
d96b3222e5 Switch the bindings to use LLVMFoldingBuilder. 
llvm-svn: 45367
 2007-12-27 18:25:59 +00:00
Gordon Henriksen
997a800e99 Adding an uninitialized builder constructor to the Ocaml bindings. 
llvm-svn: 45362
 2007-12-26 21:21:51 +00:00
Chris Lattner
a432f12b76 one fewer uncond branch with my codegenprepare hack for single-mbb backedges. 
llvm-svn: 45360
 2007-12-26 17:23:47 +00:00
Gordon Henriksen
e8226d70a9 Tests for changes made in r45356, where IPO optimizations would drop 
collector algorithms.

llvm-svn: 45357
 2007-12-26 02:47:37 +00:00
Gordon Henriksen
90d48b077d Fixing several transforms which would drop the collector attribute 
when copying functions.

llvm-svn: 45356
 2007-12-25 22:16:06 +00:00
Chris Lattner
233cd2bbcd update to llvm 2.0 syntax. 
llvm-svn: 45355
 2007-12-25 20:34:52 +00:00
Chris Lattner
90df7f7424 Don't break critical edges for single-bb loops, this helps with PR1877, though 
it is only a partial fix.  This change is noise for most programs, but
speeds up Shootout-C++/matrix by 20%, Ptrdist/ks by 24%, smg2000 by 8%,
hexxagon by 9%, bzip2 by 9% (not sure I trust this), ackerman by 13%, etc.

OTOH, it slows down Shootout/fib2 by 40% (I'll update PR1877 with this info).

llvm-svn: 45354
 2007-12-25 19:06:45 +00:00
Seo Sanghyeon
28edc56597 Actually parse q operation in llvm-ar 
llvm-svn: 45353
 2007-12-25 13:53:47 +00:00
Gordon Henriksen
653a9e4c7f Disabling -g for ocaml builds; it's not downwards compatible. 
llvm-svn: 45352
 2007-12-25 08:37:43 +00:00
Gordon Henriksen
c0a3899bbf GC poses hazards to the inliner. Consider: 
define void @f() {
            ...
            call i32 @g()
            ...
    }

    define void @g() {
            ...
    }

The hazards are:

  - @f and @g have GC, but they differ GC. Inlining is invalid. This
    may never occur.
  - @f has no GC, but @g does. g's GC must be propagated to @f.

The other scenarios are safe:

  - @f and @g have the same GC.
  - @f and @g have no GC.
  - @g has no GC.

This patch adds inliner checks for the former two scenarios.

llvm-svn: 45351
 2007-12-25 03:10:07 +00:00
Gordon Henriksen
a9f4ed4070 Noting and enforcing that GC intrinsics are valid only within a 
function with GC.

This will catch the error when the inliner inlines a function with
GC into a caller with no GC.

llvm-svn: 45350
 2007-12-25 02:31:26 +00:00
Gordon Henriksen
44841db057 Adjusting verification of "llvm.gc*" intrinsic prototypes to match 
LangRef.

llvm-svn: 45349
 2007-12-25 02:02:10 +00:00
Owen Anderson
1064e276a9 Flesh out the Briggs implementation a little bit more, fix a few FIXMEs. 
llvm-svn: 45347
 2007-12-24 22:12:23 +00:00
Chris Lattner
7e1e1f2933 add a -backedge-hack llc-beta option to codegenprepare. 
When specified, don't split backedges of single-bb loops.
This helps address PR1877

llvm-svn: 45344
 2007-12-24 19:32:55 +00:00
Chris Lattner
232e097cff add a simple hack 
llvm-svn: 45343
 2007-12-24 19:27:46 +00:00
Anton Korobeynikov
a0113f6c70 Cygwin defines uint32_t as unsigned long. Unbreak call to std::min in this case 
llvm-svn: 45342
 2007-12-24 11:16:47 +00:00
Ted Kremenek
3ba98109c9 Added special support for stripping CRLF characters that may appear in the 
output of nm.

llvm-svn: 45341
 2007-12-24 08:04:39 +00:00
Gordon Henriksen
3e409a37ac Setting GlobalDirective in TargetAsmInfo by default rather than 
providing a misleading facility. It's used once in the MIPS backend
and hardcoded as "\t.globl\t" everywhere else.

llvm-svn: 45338
 2007-12-23 20:58:16 +00:00
Owen Anderson
7133e76b12 Get rid of an unneeded #include. 
llvm-svn: 45337
 2007-12-23 20:34:06 +00:00
Gordon Henriksen
2d254558ca Fix some Ocaml GC errors noticed upon review. 
llvm-svn: 45336
 2007-12-23 17:10:23 +00:00
Gordon Henriksen
606ac32019 C and Ocaml bindings for ExecutionEngine (i.e., the JIT compiler). 
llvm-svn: 45335
 2007-12-23 16:59:28 +00:00
Owen Anderson
e9538b78ce Sketch out an implementation of Briggs' copy placement algorithm. 
llvm-svn: 45334
 2007-12-23 15:37:26 +00:00
Owen Anderson
5db3336e50 Add GraphTraits specializations for machine dominators. 
llvm-svn: 45333
 2007-12-23 15:16:46 +00:00
Gordon Henriksen
c9025501ea Undo a wrong bit in that last patch. 
llvm-svn: 45327
 2007-12-22 23:34:26 +00:00
Gordon Henriksen
586644cc15 Document a more robust implementation of performCustomLowering. 
llvm-svn: 45326
 2007-12-22 23:32:32 +00:00
Chris Lattner
a2156b160a fix some warnings. This code needs to be de-tabified :( 
llvm-svn: 45325
 2007-12-22 22:47:03 +00:00
Chris Lattner
1c6a1f71cb fix strict-aliasing violation 
llvm-svn: 45324
 2007-12-22 22:45:38 +00:00
Chris Lattner
084002dcb0 initial code for forming an FGETSIGN node. This is disabled until 
legalizer support goes in.

llvm-svn: 45323
 2007-12-22 21:35:38 +00:00
Chris Lattner
24b2a6de5c improve support for fgetsign 
llvm-svn: 45322
 2007-12-22 21:26:52 +00:00
Chris Lattner
a8f6fac7a3 Tell TargetLoweringOpt whether it is running before 
or after legalize.

llvm-svn: 45321
 2007-12-22 20:56:36 +00:00
Chris Lattner
f2aa80e0de Add a new FGETSIGN operation, which defaults to expand on all 
targets.

llvm-svn: 45320
 2007-12-22 20:47:56 +00:00
Anton Korobeynikov
4275f59e61 Erm, really disable :) 
llvm-svn: 45319
 2007-12-22 20:46:24 +00:00
Anton Korobeynikov
9f148a1a2a Disable, until we'll really need it 
llvm-svn: 45318
 2007-12-22 20:41:12 +00:00