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Author SHA1 Message Date
Dan Gohman
d0a90b9876 Preserve the DominanceFrontier analysis in the LoopDeletion pass. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65359 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-24 01:21:53 +00:00
Devang Patel
002ec1482c gdb uses DW_AT_prototyped to identify K&R style in C based languages. 
This fixes objc.dg/dwarf-prototypes.m scan-assembler DW_AT_prototyped from llvmgcc42 test suite.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65357 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-24 00:52:19 +00:00
Bill Wendling
d1d1c8b3d5 Un-XFAIL this test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65355 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-24 00:37:28 +00:00
Devang Patel
5622f07a21 While folding unconditional return move DbgRegionEndInst into the predecessor, instead of removing it. This fixes following tests from llvmgcc42 testsuite. 
gcc.c-torture/execute/20000605-3.c
gcc.c-torture/execute/20020619-1.c
gcc.c-torture/execute/20030920-1.c
gcc.c-torture/execute/loop-ivopts-1.c



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65353 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-24 00:05:16 +00:00
Devang Patel
53cac18cca If there is not any debug info available for any global variables and any subprograms then there is not any debug info to emit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65352 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-24 00:02:15 +00:00
Dan Gohman
15cab2817b Back out the change in 64918 that used sign-extensions when promoting 
trip counts that use signed comparisons. It's not obviously the best
approach for preserving trip count information, and at any rate there
isn't anything in the tree right now that makes use of that, so for
now always using zero-extensions is preferable.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65347 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-23 23:20:35 +00:00
Dan Gohman
e9865945ad Fast-isel can't do TLS yet, so it should fall back to SDISel 
if it sees TLS addresses.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65341 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-23 22:03:08 +00:00
Ted Kremenek
638b8b446e Correctly implement ImmutableMap::getMaxElement() by getting the actual <key, value> pair. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65327 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-23 17:28:16 +00:00
Ted Kremenek
1c7a666fce Add ImmutableMap::getMaxElement(), a method that returns the <key,value> pair in a ImmutableMap that has the highest ranked key. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65326 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-23 17:27:18 +00:00
Dan Gohman
e2abdd3ff0 LoopDeletion needs to inform ScalarEvolution when a loop is deleted, 
so that ScalarEvolution doesn't hang onto a dangling Loop*, which
could be a problem if another Loop happens to get allocated at the
same address.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65323 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-23 17:10:29 +00:00
Dan Gohman
834db732ba Use the -stack-alignment option instead of using a target triple 
for avoiding dynamic stack realignment.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65319 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-23 16:34:46 +00:00
Dan Gohman
474cecf0e9 IndVarSimplify preserves ScalarEvolution. In the 
-std-compile-opts sequence, this avoids the need for ScalarEvolution to
be rerun before LoopDeletion.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65318 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-23 16:29:41 +00:00
Zhou Sheng
53977755e1 Add test case for checkin @r65314. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65315 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-23 10:15:04 +00:00
Zhou Sheng
8313ef42b7 Should reset DBI_Prev if DBI_Next == 0. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65314 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-23 10:14:11 +00:00
Evan Cheng
242b38bae5 Only v1i16 (i.e. _m64) is returned via RAX / RDX. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65313 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-23 09:03:22 +00:00
Nate Begeman
932be21c08 Make this test use darwin targe triple, to avoid stack traffic on linux. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65312 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-23 09:03:06 +00:00
Nate Begeman
b9a47b824f Generate better code for v8i16 shuffles on SSE2 
Generate better code for v16i8 shuffles on SSE2 (avoids stack)
Generate pshufb for v8i16 and v16i8 shuffles on SSSE3 where it is fewer uops.
Document the shuffle matching logic and add some FIXMEs for later further
  cleanups.
New tests that test the above.

Examples:

New:
_shuf2:
	pextrw	$7, %xmm0, %eax
	punpcklqdq	%xmm1, %xmm0
	pshuflw	$128, %xmm0, %xmm0
	pinsrw	$2, %eax, %xmm0

Old:
_shuf2:
	pextrw	$2, %xmm0, %eax
	pextrw	$7, %xmm0, %ecx
	pinsrw	$2, %ecx, %xmm0
	pinsrw	$3, %eax, %xmm0
	movd	%xmm1, %eax
	pinsrw	$4, %eax, %xmm0
	ret

=========

New:
_shuf4:
	punpcklqdq	%xmm1, %xmm0
	pshufb	LCPI1_0, %xmm0

Old:
_shuf4:
	pextrw	$3, %xmm0, %eax
	movsd	%xmm1, %xmm0
	pextrw	$3, %xmm1, %ecx
	pinsrw	$4, %ecx, %xmm0
	pinsrw	$5, %eax, %xmm0

========

New:
_shuf1:
	pushl	%ebx
	pushl	%edi
	pushl	%esi
	pextrw	$1, %xmm0, %eax
	rolw	$8, %ax
	movd	%xmm0, %ecx
	rolw	$8, %cx
	pextrw	$5, %xmm0, %edx
	pextrw	$4, %xmm0, %esi
	pextrw	$3, %xmm0, %edi
	pextrw	$2, %xmm0, %ebx
	movaps	%xmm0, %xmm1
	pinsrw	$0, %ecx, %xmm1
	pinsrw	$1, %eax, %xmm1
	rolw	$8, %bx
	pinsrw	$2, %ebx, %xmm1
	rolw	$8, %di
	pinsrw	$3, %edi, %xmm1
	rolw	$8, %si
	pinsrw	$4, %esi, %xmm1
	rolw	$8, %dx
	pinsrw	$5, %edx, %xmm1
	pextrw	$7, %xmm0, %eax
	rolw	$8, %ax
	movaps	%xmm1, %xmm0
	pinsrw	$7, %eax, %xmm0
	popl	%esi
	popl	%edi
	popl	%ebx
	ret

Old:
_shuf1:
	subl	$252, %esp
	movaps	%xmm0, (%esp)
	movaps	%xmm0, 16(%esp)
	movaps	%xmm0, 32(%esp)
	movaps	%xmm0, 48(%esp)
	movaps	%xmm0, 64(%esp)
	movaps	%xmm0, 80(%esp)
	movaps	%xmm0, 96(%esp)
	movaps	%xmm0, 224(%esp)
	movaps	%xmm0, 208(%esp)
	movaps	%xmm0, 192(%esp)
	movaps	%xmm0, 176(%esp)
	movaps	%xmm0, 160(%esp)
	movaps	%xmm0, 144(%esp)
	movaps	%xmm0, 128(%esp)
	movaps	%xmm0, 112(%esp)
	movzbl	14(%esp), %eax
	movd	%eax, %xmm1
	movzbl	22(%esp), %eax
	movd	%eax, %xmm2
	punpcklbw	%xmm1, %xmm2
	movzbl	42(%esp), %eax
	movd	%eax, %xmm1
	movzbl	50(%esp), %eax
	movd	%eax, %xmm3
	punpcklbw	%xmm1, %xmm3
	punpcklbw	%xmm2, %xmm3
	movzbl	77(%esp), %eax
	movd	%eax, %xmm1
	movzbl	84(%esp), %eax
	movd	%eax, %xmm2
	punpcklbw	%xmm1, %xmm2
	movzbl	104(%esp), %eax
	movd	%eax, %xmm1
	punpcklbw	%xmm1, %xmm0
	punpcklbw	%xmm2, %xmm0
	movaps	%xmm0, %xmm1
	punpcklbw	%xmm3, %xmm1
	movzbl	127(%esp), %eax
	movd	%eax, %xmm0
	movzbl	135(%esp), %eax
	movd	%eax, %xmm2
	punpcklbw	%xmm0, %xmm2
	movzbl	155(%esp), %eax
	movd	%eax, %xmm0
	movzbl	163(%esp), %eax
	movd	%eax, %xmm3
	punpcklbw	%xmm0, %xmm3
	punpcklbw	%xmm2, %xmm3
	movzbl	188(%esp), %eax
	movd	%eax, %xmm0
	movzbl	197(%esp), %eax
	movd	%eax, %xmm2
	punpcklbw	%xmm0, %xmm2
	movzbl	217(%esp), %eax
	movd	%eax, %xmm4
	movzbl	225(%esp), %eax
	movd	%eax, %xmm0
	punpcklbw	%xmm4, %xmm0
	punpcklbw	%xmm2, %xmm0
	punpcklbw	%xmm3, %xmm0
	punpcklbw	%xmm1, %xmm0
	addl	$252, %esp
	ret



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65311 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-23 08:49:38 +00:00
Nick Lewycky
a9183c8020 If nobody minds, I'm using LTO to produce faster binaries. Switch fast codegen 
off in libLTO.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65310 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-23 07:41:55 +00:00
Mon P Wang
b0000c376c Changed option name from inline-threshold to basic-inline-threshold because 
inline-threshold option is used by the inliner.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65309 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-23 07:07:56 +00:00
Chris Lattner
2155088e8c fix some typos that Duncan noticed 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65306 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-23 05:56:17 +00:00
Bill Wendling
ef4cfc749a Propagate debug loc info through prologue/epilogue. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65298 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-23 00:42:30 +00:00
Scott Michel
4214a5531c Introduce the BuildVectorSDNode class that encapsulates the ISD::BUILD_VECTOR 
instruction. The class also consolidates the code for detecting constant
splats that's shared across PowerPC and the CellSPU backends (and might be
useful for other backends.) Also introduces SelectionDAG::getBUID_VECTOR() for
generating new BUILD_VECTOR nodes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65296 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-22 23:36:09 +00:00
Nick Lewycky
ca4286295f Add an option to the gold plugin to make it emit a file with the public api 
list that can in turn be passed to -internalize pass through
-internalize-public-api-file.

Pass gold -plugin-opt=generate-api-file to produce "apifile.txt" in the current
directory.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65295 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-22 22:15:44 +00:00
Dan Gohman
bc989d462d Revert the part of 64623 that attempted to align the source in a 
memcpy to match the alignment of the destination. It isn't necessary
for making loads and stores handled like the SSE loadu/storeu
intrinsics, and it was causing a performance regression in
MultiSource/Applications/JM/lencod.

The problem appears to have been a memcpy that copies from some
highly aligned array into an alloca; the alloca was then being
assigned a large alignment, which required codegen to perform
dynamic stack-pointer re-alignment, which forced the enclosing
function to have a frame pointer, which led to increased spilling.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65289 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-22 18:06:32 +00:00
Dan Gohman
a04af4380d Properly parenthesize this expression, fixing a real bug in the new 
-full-lsr code, as well as a GCC warning.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65288 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-22 16:40:52 +00:00
Richard Pennington
3d3c955b18 bug 3610: Test case. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65287 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-22 15:54:44 +00:00
Evan Cheng
58207f12ee If a use operand is marked isKill, don't forget to add kill to its live interval as well. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65279 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-22 08:35:56 +00:00
Evan Cheng
779aee1fea Add a note. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65275 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-22 08:13:45 +00:00
Evan Cheng
6140a8b057 Be bug compatible with gcc by returning MMX values in RAX. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65274 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-22 08:05:12 +00:00
Evan Cheng
c94ebef1b1 Do not consider MMX_MOVD64rr a move instructions. The source register is in GR32, the destination is VR64. They are not compatible. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65273 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-22 08:04:23 +00:00
Evan Cheng
3cd389de39 Only try to sink immediate when TLI is not null. It needs to check if immediate would fit in target addressing field. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65268 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-22 07:31:19 +00:00
Nick Lewycky
bdf0d7cfc1 Regenerate. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65250 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-21 22:38:49 +00:00
Nick Lewycky
5992175b0f Remove tests for flex/bison which are no longer needed by LLVM. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65249 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-21 22:36:26 +00:00
Nick Lewycky
2ec0dbf961 Don't sign extend the char when expanding char -> int during 
load(bitcast(char[4] to i32*)) evaluation.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65246 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-21 20:50:42 +00:00
Daniel Dunbar
92acef0e94 Add makefile debugging target; use "make print-FOO" to print the 
value/definition/origin of FOO.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65245 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-21 20:42:39 +00:00
Richard Pennington
278f83daeb bug 3610: Floating point vaarg not softened. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65239 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-21 19:11:18 +00:00
Ted Kremenek
07bf7efa0a Add version of StringsEqualNoCase that takes two null-terminated C-strings and compares up to 'len' characters. I tend to screw up string comparison functions, so anyone who is interested please review this\! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65236 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-21 18:25:30 +00:00
Anton Korobeynikov
b5bd026a75 Drop bunch of half-working stuff in the ext_weak linkage support. 
Now we're using one gross, but quite robust hack :) (previous ones
did not work, for example, when ext_weak symbol was used deep inside
constant expression in the initializer).

The proper fix of this problem will require some quite huge asmprinter
changes and that's why was postponed. This fixes PR3629 by the way :)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65230 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-21 11:53:32 +00:00
Nick Lewycky
8e87e65d28 Pass different flags on different platforms when building PIC. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65229 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-21 08:41:09 +00:00
Evan Cheng
b0ea08066c Add AddrModeMatcher.cpp 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65228 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-21 07:05:11 +00:00
Evan Cheng
28c7ce3fd4 If two-address def is dead and the instruction does not define other registers, and it doesn't produce side effects, just delete the instruction. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65218 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-21 03:14:25 +00:00
Evan Cheng
d9fb712403 Teach LSR sink to sink the immediate portion of the common expression back into uses if they fit in address modes of all the uses. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65215 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-21 02:06:47 +00:00
Bill Wendling
5a45d76c25 Make sure this doesn't access .end() too. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65213 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-21 01:11:36 +00:00
Gabor Greif
67a2743b6b fix and clean up a comment 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65212 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-21 01:09:07 +00:00
Bill Wendling
8aa374b629 Make sure we don't dereference the .end() of the container. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65211 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-21 01:07:26 +00:00
Chris Lattner
36d3e326df rename a function to indicate that it checks for profitability as well 
as legality.  Make load sinking and gep sinking more careful: we only
do it when it won't pessimize loads from the stack.  This has the added
benefit of not producing code that is unanalyzable to SROA.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65209 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-21 00:46:50 +00:00
Bill Wendling
3d2445f5d9 Propagate more debug loc infos. This also includes some code cleaning. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65207 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-21 00:43:56 +00:00
Bill Wendling
2625f9b2e4 We need to propagate the debug location information even when dealing with the 
prologue/epilogue.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65206 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-21 00:32:08 +00:00
Misha Brukman
9259905f88 * Fixed spelling 
* Linters now return their information instead of printing it, to
  enable easier unittesting
* Added support for finding tabs in files, added to C++ linter


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65202 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-20 23:44:54 +00:00
Dan Gohman
1ba519b726 Fix a bug that David Greene found in the DAGCombiner's logic 
that checks whether it's safe to transform a store of a bitcast
value into a store of the original value.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65201 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-20 23:29:13 +00:00