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Author SHA1 Message Date
Christopher Lamb
b15147ea4c 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. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45403 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-29 07:56:53 +00:00
Chris Lattner
b253a8b382 make sure not to zap volatile stores, thanks a lot to Dale for noticing this! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45402 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-29 07:15:45 +00:00
Chris Lattner
d60eedca01 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



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45401 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-29 06:57:38 +00:00
Chris Lattner
5938bef2d2 don't fold fp_round(fp_extend(load)) -> fp_round(extload) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45400 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-29 06:55:23 +00:00
Chris Lattner
112dedc520 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(); }



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45399 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-29 06:41:28 +00:00
Chris Lattner
3c87285af6 Delete a store whose input is a load from the same pointer: 
x = load p
  store x -> p


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45398 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-29 06:26:16 +00:00
Chris Lattner
7ede51b964 add a note 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45397 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-29 05:51:58 +00:00
Chris Lattner
92c06a01de expand note. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45393 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-29 01:05:01 +00:00
Chris Lattner
741c0aea08 dead calls to llvm.stacksave can be deleted, even though they 
have potential side-effects.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45392 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-29 00:59:12 +00:00
Chris Lattner
26d5f661d6 upgrade this test 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45391 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-29 00:57:06 +00:00
Devang Patel
c49c08f747 Test -simplifycfg only. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45389 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-28 22:59:48 +00:00
Chris Lattner
a1643ba71a add a note. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45388 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-28 22:30:05 +00:00
Chris Lattner
9bfcc624ba add a note. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45387 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-28 21:50:40 +00:00
Owen Anderson
2910f68a52 Add a testcase for my recent InstCombine fix, written by Nicholas. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45386 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-28 21:08:43 +00:00
Owen Anderson
f5783f825d Repair a transform that Chris noticed a bug in. Thanks to Nicholas for pointing out my stupid mistakes when writing this patch. :-) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45384 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-28 07:42:12 +00:00
Chris Lattner
c48b138869 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.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45383 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-28 06:24:31 +00:00
Chris Lattner
166a268656 add a note 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45377 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-28 04:42:05 +00:00
Anton Korobeynikov
650d5053bf Ignore functions with internal linkages during linking. This snipped mimics the 
behaviour of LinkGlobals() function.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45375 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-27 23:21:57 +00:00
Gordon Henriksen
a353ffa7e5 Adding bindings for target triple and data layout. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45369 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-27 20:13:47 +00:00
Gordon Henriksen
1d2e49cd84 Switch the bindings to use LLVMFoldingBuilder. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45367 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-27 18:25:59 +00:00
Gordon Henriksen
a09a89983b Adding an uninitialized builder constructor to the Ocaml bindings. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45362 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-26 21:21:51 +00:00
Chris Lattner
8d2a922814 one fewer uncond branch with my codegenprepare hack for single-mbb backedges. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45360 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-26 17:23:47 +00:00
Gordon Henriksen
e86ce7d94a Tests for changes made in r45356, where IPO optimizations would drop 
collector algorithms.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45357 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-26 02:47:37 +00:00
Gordon Henriksen
194c90ed2a Fixing several transforms which would drop the collector attribute 
when copying functions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45356 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-25 22:16:06 +00:00
Chris Lattner
64910eeec4 update to llvm 2.0 syntax. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45355 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-25 20:34:52 +00:00
Chris Lattner
ff26ab2277 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).



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45354 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-25 19:06:45 +00:00
Seo Sanghyeon
dc32d19c1c Actually parse q operation in llvm-ar 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45353 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-25 13:53:47 +00:00
Gordon Henriksen
4e20a09b6f Disabling -g for ocaml builds; it's not downwards compatible. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45352 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-25 08:37:43 +00:00
Gordon Henriksen
0e13821c96 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45351 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-25 03:10:07 +00:00
Gordon Henriksen
e1433f24cf 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45350 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-25 02:31:26 +00:00
Gordon Henriksen
27acd3a999 Adjusting verification of "llvm.gc*" intrinsic prototypes to match 
LangRef.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45349 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-25 02:02:10 +00:00
Owen Anderson
f1519e8361 Flesh out the Briggs implementation a little bit more, fix a few FIXMEs. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45347 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-24 22:12:23 +00:00
Chris Lattner
ebe807597f add a -backedge-hack llc-beta option to codegenprepare. 
When specified, don't split backedges of single-bb loops.
This helps address PR1877



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45344 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-24 19:32:55 +00:00
Chris Lattner
44cb8efdc1 add a simple hack 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45343 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-24 19:27:46 +00:00
Anton Korobeynikov
97d37260df Cygwin defines uint32_t as unsigned long. Unbreak call to std::min in this case 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45342 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-24 11:16:47 +00:00
Ted Kremenek
ec9e7163b8 Added special support for stripping CRLF characters that may appear in the 
output of nm.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45341 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-24 08:04:39 +00:00
Gordon Henriksen
81361d6a28 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45338 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-23 20:58:16 +00:00
Owen Anderson
99d562d8fc Get rid of an unneeded #include. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45337 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-23 20:34:06 +00:00
Gordon Henriksen
15ac8b9e6d Fix some Ocaml GC errors noticed upon review. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45336 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-23 17:10:23 +00:00
Gordon Henriksen
2e855e68d8 C and Ocaml bindings for ExecutionEngine (i.e., the JIT compiler). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45335 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-23 16:59:28 +00:00
Owen Anderson
efbcebc95d Sketch out an implementation of Briggs' copy placement algorithm. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45334 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-23 15:37:26 +00:00
Owen Anderson
96fa396039 Add GraphTraits specializations for machine dominators. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45333 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-23 15:16:46 +00:00
Gordon Henriksen
74f4dedefb Undo a wrong bit in that last patch. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45327 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-22 23:34:26 +00:00
Gordon Henriksen
0adede059e Document a more robust implementation of performCustomLowering. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45326 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-22 23:32:32 +00:00
Chris Lattner
52ec375438 fix some warnings. This code needs to be de-tabified :( 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45325 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-22 22:47:03 +00:00
Chris Lattner
d3ada751c3 fix strict-aliasing violation 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45324 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-22 22:45:38 +00:00
Chris Lattner
2ceb2cfa8e initial code for forming an FGETSIGN node. This is disabled until 
legalizer support goes in.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45323 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-22 21:35:38 +00:00
Chris Lattner
d268a497f9 improve support for fgetsign 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45322 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-22 21:26:52 +00:00
Chris Lattner
b16f55f3c8 Tell TargetLoweringOpt whether it is running before 
or after legalize.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45321 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-22 20:56:36 +00:00
Chris Lattner
1a3048bb8e Add a new FGETSIGN operation, which defaults to expand on all 
targets.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45320 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-22 20:47:56 +00:00