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Author SHA1 Message Date
Chris Lattner
e0b1ee937a Don't attribute in file headers anymore. See llvmdev for the 
discussion of this change.  Boy are my fingers tired. ;-)

llvm-svn: 45411
 2007-12-29 19:59:42 +00:00
Chris Lattner
5c09e20cab Don't attribute in file headers anymore. See llvmdev for the 
discussion of this change.

llvm-svn: 45409
 2007-12-29 19:56:08 +00:00
Chris Lattner
d82b30a996 this is done. 
llvm-svn: 45408
 2007-12-29 19:38:02 +00:00
Chris Lattner
d55e743cfe One readme entry is done, one is really easy (Evan, want to investigate 
eliminating the llvm.x86.sse2.loadl.pd intrinsic?), one shuffle optzn
may be done (if shufps is better than pinsw, Evan, please review), and
we already know about LICM of simple instructions.

llvm-svn: 45407
 2007-12-29 19:31:47 +00:00
Chris Lattner
ed55329cc9 upgrade this test 
llvm-svn: 45406
 2007-12-29 19:24:06 +00:00
Chris Lattner
cd147e5596 Fold comparisons against a constant nan, and optimize ORD/UNORD 
comparisons with a constant.  This allows us to compile isnan to:

_foo:
	fcmpu cr7, f1, f1
	mfcr r2
	rlwinm r3, r2, 0, 31, 31
	blr 

instead of:

LCPI1_0:					;  float
	.space	4
_foo:
	lis r2, ha16(LCPI1_0)
	lfs f0, lo16(LCPI1_0)(r2)
	fcmpu cr7, f1, f0
	mfcr r2
	rlwinm r3, r2, 0, 31, 31
	blr 

llvm-svn: 45405
 2007-12-29 08:37:08 +00:00
Chris Lattner
b36a4a7a84 this xform is implemented. 
llvm-svn: 45404
 2007-12-29 08:19:39 +00:00
Christopher Lamb
dfad5f19b4 Disable null pointer folding transforms for non-generic address spaces. This should probably be a target-specific predicate based on address space. That way for targets where this isn't applicable the predicate can be optimized away. 
llvm-svn: 45403
 2007-12-29 07:56:53 +00:00
Chris Lattner
38687aa2b2 make sure not to zap volatile stores, thanks a lot to Dale for noticing this! 
llvm-svn: 45402
 2007-12-29 07:15:45 +00:00
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