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35646 Commits

Author SHA1 Message Date
Chris Lattner 1ebfecc8d0 Implement correct isa<UnaryInstruction>, problem reported by "ST". 
llvm-svn: 44697
 2007-12-08 04:37:52 +00:00
Bill Wendling 4375173ba0 Incorporated comments from Evan and Chris: 
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20071203/056043.html
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20071203/056048.html

llvm-svn: 44696
 2007-12-08 01:47:01 +00:00
Owen Anderson 086b2c4537 Fix several cache coherence bugs in MemDep/GVN that were found. Also add some (disabled) debugging code 
to make such problems easier to diagnose in the future, written by Duncan Sands.

llvm-svn: 44695
 2007-12-08 01:37:09 +00:00
Evan Cheng 92105ac0cd Doh 
llvm-svn: 44694
 2007-12-08 01:01:07 +00:00
Evan Cheng cd6913627e Fix a compilation warning. 
llvm-svn: 44692
 2007-12-08 01:00:31 +00:00
Evan Cheng ab87e735cd Fix a compilation warning. 
llvm-svn: 44691
 2007-12-08 01:00:21 +00:00
Chuck Rose III c214d1605f Adding MachineLoopInfo.h,.cpp and MachineLICP.cpp to VStudio build 
llvm-svn: 44690
 2007-12-08 00:53:13 +00:00
Bill Wendling fb706bc52b Initial commit of the machine code LICM pass. It successfully hoists this: 
_foo:
        li r2, 0
LBB1_1: ; bb
        li r5, 0
        stw r5, 0(r3)
        addi r2, r2, 1
        addi r3, r3, 4
        cmplw cr0, r2, r4
        bne cr0, LBB1_1 ; bb
LBB1_2: ; return
        blr 

to:

_foo:
        li r2, 0
        li r5, 0
LBB1_1: ; bb
        stw r5, 0(r3)
        addi r2, r2, 1
        addi r3, r3, 4
        cmplw cr0, r2, r4
        bne cr0, LBB1_1 ; bb
LBB1_2: ; return
        blr

ZOMG!! :-)

Moar to come...

llvm-svn: 44687
 2007-12-07 21:42:31 +00:00
Evan Cheng b41d838d28 Add comment. 
llvm-svn: 44686
 2007-12-07 21:30:01 +00:00
Evan Cheng bfd373a53e Much improved v8i16 shuffles. (Step 1). 
llvm-svn: 44676
 2007-12-07 08:07:39 +00:00
Owen Anderson b1d4fda856 Fix a stupid error that Chris pointed out. 
llvm-svn: 44674
 2007-12-07 04:04:55 +00:00
Evan Cheng 26593a04db New test case. 
llvm-svn: 44672
 2007-12-07 01:48:46 +00:00
Evan Cheng 85cdba29b0 Add an option to control this heuristic tweak so I can test it. 
llvm-svn: 44671
 2007-12-07 00:28:32 +00:00
Evan Cheng c829e5cdf0 Remove a bogus optimization. It's not possible to do a move to low element to a <8 x i16> or <16 x i8> vector. 
llvm-svn: 44669
 2007-12-06 22:14:22 +00:00
Evan Cheng 5cb41390ab Fix a bogus test case. 
llvm-svn: 44668
 2007-12-06 22:12:45 +00:00
Dale Johannesen 5eff4de9c8 Redo previous patch so optimization only done for i1. 
Simpler and safer.

llvm-svn: 44663
 2007-12-06 17:53:31 +00:00
Evan Cheng 8393dc7378 Turning simple splitting on. Start testing new coalescer heuristics as new llcbeta. 
llvm-svn: 44660
 2007-12-06 08:54:31 +00:00
Chris Lattner eedaf92fcf third time around: instead of disabling this completely, 
only disable it if we don't know it will be obviously profitable.
Still fixme, but less so. :)

llvm-svn: 44658
 2007-12-06 07:47:55 +00:00
Chris Lattner b5fdfb9612 Actually, disable this code for now. More analysis and improvements to 
the X86 backend are needed before this should be enabled by default.

llvm-svn: 44657
 2007-12-06 07:44:31 +00:00
Chris Lattner 7c709a5d08 implement a readme entry, compiling the code into: 
_foo:
	movl	$12, %eax
	andl	4(%esp), %eax
	movl	_array(%eax), %eax
	ret

instead of:

_foo:
	movl	4(%esp), %eax
	shrl	$2, %eax
	andl	$3, %eax
	movl	_array(,%eax,4), %eax
	ret

As it turns out, this triggers all the time, in a wide variety of
situations, for example, I see diffs like this in various programs:

-       movl    8(%eax), %eax
-       shll    $2, %eax
-       andl    $1020, %eax
-       movl    (%esi,%eax), %eax
+       movzbl  8(%eax), %eax
+       movl    (%esi,%eax,4), %eax


-       shll    $2, %edx
-       andl    $1020, %edx
-       movl    (%edi,%edx), %edx
+       andl    $255, %edx
+       movl    (%edi,%edx,4), %edx

Unfortunately, I also see stuff like this, which can be fixed in the
X86 backend:

-       andl    $85, %ebx
-       addl    _bit_count(,%ebx,4), %ebp
+       shll    $2, %ebx
+       andl    $340, %ebx
+       addl    _bit_count(%ebx), %ebp

llvm-svn: 44656
 2007-12-06 07:33:36 +00:00
Chris Lattner d2bbbabbfb simplify some code. 
llvm-svn: 44655
 2007-12-06 06:25:04 +00:00
Chris Lattner 42558bf664 implement the rest of the functionality from SelectionDAGLegalize::ScalarizeVectorOp 
llvm-svn: 44654
 2007-12-06 05:53:43 +00:00
Chuck Rose III cc2a661322 Adjust VStudio files to add JITMemoryManager files + include <cassert> from same. 
llvm-svn: 44651
 2007-12-06 02:03:01 +00:00
Chris Lattner 0ccb663cca move some ashr-specific code out of commonShiftTransforms into visitAShr. 
llvm-svn: 44650
 2007-12-06 01:59:46 +00:00
Dale Johannesen 05bbbda78a Fix PR1842. 
llvm-svn: 44649
 2007-12-06 01:43:46 +00:00
Chris Lattner 7f3587e344 add a new ExecutionEngine::createJIT which can be used if you only want 
to create a JIT.  This lets you specify JIT-specific configuration items
like the JITMemoryManager to use.

llvm-svn: 44647
 2007-12-06 01:34:04 +00:00
Chris Lattner dc351b94f9 simplify creation of the interpreter, make ExecutionEngine ctor protected, 
delete one ExecutionEngine ctor, minor cleanup.

llvm-svn: 44646
 2007-12-06 01:08:09 +00:00
Chris Lattner dfa39289a5 fix this when run on non x86 hosts. 
llvm-svn: 44645
 2007-12-06 01:05:52 +00:00
Evan Cheng 7fc1d98353 Fix for PR1831: if all defs of an interval are re-materializable, then it's a preferred spill candiate. 
llvm-svn: 44644
 2007-12-06 00:01:56 +00:00
Evan Cheng d3d8017bcb If both result of the {s|z}xt and its source are live out, rewrite all uses of the source with result of extension. 
llvm-svn: 44643
 2007-12-05 23:58:20 +00:00
Chris Lattner 6a04fcb2f4 improve header guard 
llvm-svn: 44641
 2007-12-05 23:45:41 +00:00
Chris Lattner 55d8c3f71b split the JIT memory management code out from the main JIT logic into its 
own JITMemoryManager interface.  There is no functionality change with 
this patch.

llvm-svn: 44640
 2007-12-05 23:39:57 +00:00
Chris Lattner 5e224c32f4 add a note 
llvm-svn: 44638
 2007-12-05 23:05:06 +00:00
Chris Lattner ad05e17491 add a note 
llvm-svn: 44637
 2007-12-05 22:58:19 +00:00
Bill Wendling dc71f08586 Alphabetizing; I want to be the last in the file!!!! ;-) 
llvm-svn: 44629
 2007-12-05 21:26:54 +00:00
Scott Michel 7c56a522af Regenerated configure after autoconf/configure.ac change. 
llvm-svn: 44628
 2007-12-05 21:24:02 +00:00
Scott Michel 83d54c9ee0 Minor updates: 
- Fix typo in SPUCallingConv.td
- Credit myself for CellSPU work
- Add CellSPU to 'all' host target list

llvm-svn: 44627
 2007-12-05 21:23:16 +00:00
Duncan Sands abba5e218c Commit 44487 broke bootstrap of llvm-gcc-4.2. It is 
not yet clear why, but in the meantime work around the
problem by making less use of readnone/readonly info.

llvm-svn: 44626
 2007-12-05 21:03:28 +00:00
Evan Cheng 3b8a674469 Added canFoldMemoryOperand for PPC. 
llvm-svn: 44623
 2007-12-05 18:41:29 +00:00
Evan Cheng 8492bdeaa4 Update foldMemoryOperand. 
llvm-svn: 44621
 2007-12-05 18:36:37 +00:00
Chris Lattner de9bfcf67a fix warnings 
llvm-svn: 44620
 2007-12-05 18:32:18 +00:00
Chris Lattner 8292519705 allow this to build 
llvm-svn: 44619
 2007-12-05 18:30:11 +00:00
Neil Booth 06f20ea4ba Prior commit updated wrong if, apologies. 
llvm-svn: 44614
 2007-12-05 13:06:04 +00:00
Neil Booth 3ab004bca6 Handle zero correctly. 
llvm-svn: 44613
 2007-12-05 13:01:24 +00:00
Evan Cheng 678b86d6ce MachineInstr can change. Store indexes instead. 
llvm-svn: 44612
 2007-12-05 10:24:35 +00:00
Evan Cheng 06353b48b5 If a split live interval is spilled again, remove the kill marker on its last use. 
llvm-svn: 44611
 2007-12-05 09:51:10 +00:00
Evan Cheng 64b3baaaea Clobber more bugs. 
llvm-svn: 44610
 2007-12-05 09:05:34 +00:00
Evan Cheng d7de56ac93 Fix kill info for split intervals. 
llvm-svn: 44609
 2007-12-05 08:16:32 +00:00
Chris Lattner c9693c60a5 more scalarization 
llvm-svn: 44608
 2007-12-05 07:45:02 +00:00
Chris Lattner 1a0d49a63c scalarize vector binops 
llvm-svn: 44607
 2007-12-05 07:36:58 +00:00