Commit Graph

20863 Commits

Author SHA1 Message Date
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
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 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
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
Evan Cheng 269dbd31d0 - Mark last use of a split interval as kill instead of letting spiller track it.
This allows an important optimization to be re-enabled.
- If all uses / defs of a split interval can be folded, give the interval a
  low spill weight so it would not be picked in case spilling is needed (avoid
  pushing other intervals in the same BB to be spilled).

llvm-svn: 44601
2007-12-05 03:22:34 +00:00
Evan Cheng bb26301864 Add a argument to storeRegToStackSlot and storeRegToAddr to specify whether
the stored register is killed.

llvm-svn: 44600
2007-12-05 03:14:33 +00:00
Scott Michel 4834955fdf More stuff for CellSPU -- this should be enough to get an error-free
compilation (no files missing). Test cases remain to be checked in.

llvm-svn: 44598
2007-12-05 02:01:41 +00:00
Scott Michel d1b5b9f68c Updated source file headers to llvm coding standard.
llvm-svn: 44597
2007-12-05 01:40:25 +00:00
Scott Michel 8d35728607 Two missing files.
llvm-svn: 44596
2007-12-05 01:31:18 +00:00
Scott Michel eff980208a Main CellSPU backend files checked in. Intrinsics and autoconf files
remain.

llvm-svn: 44595
2007-12-05 01:24:05 +00:00
Dale Johannesen 9d43e3d841 Handle 0 correctly in string->APFloat conversion.
llvm-svn: 44594
2007-12-05 01:10:19 +00:00
Evan Cheng e412a4427b Remove a unsafe optimization. This fixes 401.bzip2.
llvm-svn: 44587
2007-12-04 23:57:55 +00:00
Scott Michel dfe09ed085 More files in the CellSPU drop...
llvm-svn: 44584
2007-12-04 22:35:58 +00:00
Scott Michel 6e22c651d1 More of the Cell SPU code drop from "Team Aerospace".
llvm-svn: 44582
2007-12-04 22:23:35 +00:00
Evan Cheng cd8a89b3cd Spiller unfold optimization bug: do not clobber a reusable stack slot value unless it can be modified.
llvm-svn: 44575
2007-12-04 19:19:45 +00:00
Chris Lattner b892225fb9 Implement framework for scalarizing node results. This is sufficient
to codegen this:

define float @test_extract_elt(<1 x float> * %P) {
	%p = load <1 x float>* %P
	%R = extractelement <1 x float> %p, i32 0
	ret float %R
}

llvm-svn: 44570
2007-12-04 07:48:46 +00:00
Chris Lattner 681c9d6697 start providing framework for scalarizing vectors.
llvm-svn: 44569
2007-12-04 07:29:51 +00:00
Evan Cheng d1badb960e Discard split intervals made empty due to folding.
llvm-svn: 44565
2007-12-04 00:32:23 +00:00
Scott Michel d821fe741e More CellSPU files... more to follow.
llvm-svn: 44559
2007-12-03 23:14:43 +00:00
Scott Michel c7bd8d9cb0 Makefile fragment for CellSPU.
llvm-svn: 44558
2007-12-03 23:12:49 +00:00
Scott Michel 256e9abbb9 First commit to CellSPU. More to follow
llvm-svn: 44557
2007-12-03 23:09:49 +00:00
Evan Cheng 40965448ff Bug fixes.
llvm-svn: 44549
2007-12-03 21:31:55 +00:00
Anton Korobeynikov 3ddfbf36e9 Regenerate
llvm-svn: 44546
2007-12-03 21:01:29 +00:00
Anton Korobeynikov a638f11cd2 Fix fallout from my last patch: don't reject varargs functions :)
llvm-svn: 44545
2007-12-03 21:00:45 +00:00
Duncan Sands 38ef3a8ec7 Rather than having special rules like "intrinsics cannot
throw exceptions", just mark intrinsics with the nounwind
attribute.  Likewise, mark intrinsics as readnone/readonly
and get rid of special aliasing logic (which didn't use
anything more than this anyway).

llvm-svn: 44544
2007-12-03 20:06:50 +00:00