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Author SHA1 Message Date
Chris Lattner
103a64318b split machineoperand out into its own header file. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45445 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-30 04:40:25 +00:00
Bill Wendling
6259d51c91 If we have a load of a global address that's not modified during the 
function, then go ahead and hoist it out of the loop. This is the result:

$ cat a.c
volatile int G;

int A(int N) {
  for (; N > 0; --N)
    G++;
}
$ llc -o - -relocation-model=pic
_A:
...
LBB1_2: # bb
        movl    L_G$non_lazy_ptr-"L1$pb"(%eax), %esi
        incl    (%esi)
        incl    %edx
        cmpl    %ecx, %edx
        jne     LBB1_2  # bb
...
$ llc -o - -relocation-model=pic -machine-licm
_A:
...
        movl    L_G$non_lazy_ptr-"L1$pb"(%eax), %eax
LBB1_2: # bb
        incl    (%eax)
        incl    %edx
        cmpl    %ecx, %edx
        jne     LBB1_2  # bb
...

I'm limiting this to the MOV32rm x86 instruction for now.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45444 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-30 03:18:58 +00:00
Chris Lattner
ece6737f15 remove unneeded #includes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45439 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-30 01:11:43 +00:00
Chris Lattner
b4e48cb096 remove a bunch of now-dead methods. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45438 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-30 01:04:05 +00:00
Chris Lattner
c8bd287f3c use simplified operand addition methods. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45437 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-30 01:01:54 +00:00
Chris Lattner
9ce2e9d5a0 use simplified operand addition methods. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45436 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-30 00:57:42 +00:00
Chris Lattner
fec65d5562 use simplified operand addition methods. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45435 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-30 00:51:11 +00:00
Chris Lattner
c672a1fb04 make offset operand optional. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45434 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-30 00:50:55 +00:00
Chris Lattner
39697a83b5 Shrinkify the machine operand creation method names. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45433 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-30 00:45:46 +00:00
Chris Lattner
8019f41c0b Start using the simplified methods for adding operands. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45432 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-30 00:41:17 +00:00
Chris Lattner
c8313f1d79 switch MIBuilder over to use the simplified operand addition methods. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45431 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-30 00:35:18 +00:00
Chris Lattner
e86d0d089e 1. Make a static MachineOperand::create* method for every 
operand type.
2. Move these create methods below the accessors.
3. Simplify all the MachineInstr::add* methods to use these.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45430 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-30 00:29:19 +00:00
Chris Lattner
2c36affc82 tblgen shouldn't include headers from llvm codegen. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45429 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-30 00:25:23 +00:00
Chris Lattner
a4161ee994 simplify some code by factoring operand construction better. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45428 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-30 00:12:25 +00:00
Chris Lattner
234d529e58 remove attribution from a variety of miscellaneous files. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45425 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-29 22:59:10 +00:00
Chris Lattner
cf78659a82 regenerate 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45424 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-29 20:47:37 +00:00
Chris Lattner
4c06e0d8a5 remove attributions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45423 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-29 20:46:15 +00:00
Gordon Henriksen
cc0928ff22 Bindings for instruction calling conventions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45422 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-29 20:45:00 +00:00
Chris Lattner
21c62da287 remove attributions from tools. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45421 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-29 20:44:31 +00:00
Chris Lattner
fc001bbfc3 remove attributions from examples. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45420 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-29 20:37:57 +00:00
Chris Lattner
3060910e29 remove attributions from utils. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45419 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-29 20:37:13 +00:00
Chris Lattner
4ee451de36 Remove attribution from file headers, per discussion on llvmdev. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45418 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-29 20:36:04 +00:00
Chris Lattner
57360d1f1c remove attributions from the rest of the llvm makefiles. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45416 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-29 20:11:13 +00:00
Chris Lattner
fc643c5e88 remove attribution from lib Makefiles. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45415 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-29 20:09:26 +00:00
Chris Lattner
5116784826 remove attributions from tools/utils makefiles. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45414 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-29 20:07:17 +00:00
Chris Lattner
7ed47a1335 Don't attribute in file headers anymore. See llvmdev for the 
discussion of this change.  Boy are my fingers tired. ;-)



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45411 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-29 19:59:42 +00:00
Chris Lattner
ab2b10c3a9 Don't attribute in file headers anymore. See llvmdev for the 
discussion of this change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45409 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-29 19:56:08 +00:00
Chris Lattner
a5e90d7b74 this is done. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45408 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-29 19:38:02 +00:00
Chris Lattner
03c079d5fc 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45407 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-29 19:31:47 +00:00
Chris Lattner
18f07f49c5 upgrade this test 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45406 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-29 19:24:06 +00:00
Chris Lattner
63079f0757 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 



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45405 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-29 08:37:08 +00:00
Chris Lattner
69bfbdfaee this xform is implemented. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45404 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-29 08:19:39 +00:00
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