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Author SHA1 Message Date
Chris Lattner
f4ea68fa5a fix PR10605 / rdar://9930964 by adding a pretty scary missed check. 
It's somewhat surprising anything works without this.  Before we would
compile the testcase into:

test:                                   # @test
	movl	$4, 8(%rdi)
	movl	8(%rdi), %eax
	orl	%esi, %eax
	cmpl	$32, %edx
	movl	%eax, -4(%rsp)          # 4-byte Spill
	je	.LBB0_2

now we produce:

test:                                   # @test
	movl	8(%rdi), %eax
	movl	$4, 8(%rdi)
	orl	%esi, %eax
	cmpl	$32, %edx
	movl	%eax, -4(%rsp)          # 4-byte Spill
	je	.LBB0_2



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137303 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-11 06:26:54 +00:00
Bruno Cardoso Lopes
b02c0ace20 Cleanup: Remove Int_ CVTSS2SI* forms 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137297 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-11 02:52:36 +00:00
Bruno Cardoso Lopes
5f1d8abf75 Splats for v8i32/v8f32 can be handled by VPERMILPSY. This was causing 
infinite recursive calls in legalize. Fix PR10562

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137296 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-11 02:49:44 +00:00
Bruno Cardoso Lopes
a5134a0ea3 Use the splat index to generate the desired shuffle. Otherwise we 
could only get undefs and the vector shuffle becomes an undef,
generating wrong code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137295 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-11 02:49:41 +00:00
Eli Friedman
586272d67c Fix X86TargetLowering::LowerExternalSymbol so that it actually works in non-trivial cases. This hasn't been an issue before because the function isn't normally called (but apparently is used to generate a tail-call to sin() on ELF x86-32 with PIC and SSE2). 
Fixes PR9693.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137292 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-11 01:48:05 +00:00
Chad Rosier
78eb93c591 Typo. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137286 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-11 00:22:48 +00:00
Devang Patel
5bc942cc3c Stay within 80 columns. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137283 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-10 23:58:09 +00:00
Jim Grosbach
59999264e6 ARM LDRT assembly parsing and encoding. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137282 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-10 23:43:54 +00:00
Jim Grosbach
e15defc56c Tidy up. 80 columns. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137277 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-10 23:23:47 +00:00
Andrew Trick
fb62b8deb3 Reapplying r136844. 
An algorithm for incrementally updating LoopInfo within a
LoopPassManager. The incremental update should be extremely cheap in
most cases and can be used in places where it's not feasible to
regenerate the entire loop forest.

- "Unloop" is a node in the loop tree whose last backedge has been removed.
- Perform reverse dataflow on the block inside Unloop to propagate the
  nearest loop from the block's successors.
- For reducible CFG, each block in unloop is visited exactly
  once. This is because unloop no longer has a backedge and blocks
  within subloops don't change parents.
- Immediate subloops are summarized by the nearest loop reachable from
  their exits or exits within nested subloops.
- At completion the unloop blocks each have a new parent loop, and
  each immediate subloop has a new parent.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137276 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-10 23:22:57 +00:00
Jim Grosbach
64104f48f2 ARM tests for LDRSHT assembly parsing and encoding. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137274 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-10 23:18:30 +00:00
Jim Grosbach
e0109c07ff ARM tests for LDRSH assembly parsing and encoding. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137272 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-10 23:12:25 +00:00
Jim Grosbach
7d179b59cd ARM tests for LDRSBT assembly parsing and encoding. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137271 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-10 23:08:56 +00:00
Jim Grosbach
5e92159400 ARM tests for LDRSB assembly parsing and encoding. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137270 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-10 23:06:44 +00:00
Jim Grosbach
263bb07135 Add FIXME. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137265 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-10 22:56:43 +00:00
Andrew Trick
d8a2f3ab91 Cleanup. Remove an extraneous GraphTraits specialization. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137264 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-10 22:55:39 +00:00
Jim Grosbach
de2f526c7c ARM tests for LDRHT assembly parsing and encoding. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137263 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-10 22:55:38 +00:00
NAKAMURA Takumi
9cbb0d2b3c test/CodeGen/X86/opt-shuff-tstore.ll: Add explicit -mtriple=x86_64-linux. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137262 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-10 22:52:48 +00:00
Jim Grosbach
46b355479f ARM tests for LDRH(register) assembly parsing and encoding. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137261 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-10 22:45:42 +00:00
Jim Grosbach
623a454b0f ARM LDRH(immediate) assembly parsing and encoding support. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137260 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-10 22:42:16 +00:00
Jim Grosbach
c7de52fcff Add FIXME 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137258 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-10 22:20:38 +00:00
Jim Grosbach
251bf25e7e ARM LDRD(register) assembly parsing and encoding. 
Add support for literal encoding of #-0 along the way.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137254 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-10 21:56:18 +00:00
Devang Patel
b549bcfe6c Distinguish between two copies of one inlined variable. Take 2. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137253 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-10 21:50:54 +00:00
Devang Patel
c722c3d5ff While extending definition range of a debug variable, consult lexical scopes also. There is no point extending debug variable out side its lexical block. This provides 6x compile time speedup in some cases. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137250 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-10 21:25:34 +00:00
Devang Patel
9ce256421a Revert unintentional parts of previous check-in. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137249 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-10 21:16:49 +00:00
Devang Patel
bf47fdb91c Start using LexicalScopes utility. No intetional functionality change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137246 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-10 20:55:27 +00:00
Jim Grosbach
53642c5335 Fix typo. Not quite sure how that slipped in there. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137245 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-10 20:49:18 +00:00
Jim Grosbach
2fd2b87ded ARM LDRD(immediate) assembly parsing and encoding support. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137244 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-10 20:29:19 +00:00
Eli Friedman
e2d8cf77c8 Changes per Jeffrey's comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137243 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-10 20:17:43 +00:00
Nadav Rotem
f429767765 Fix the test. Add cpu target. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137241 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-10 19:49:19 +00:00
Nadav Rotem
614061bfb4 When performing a truncating store, it is sometimes possible to rearrange the 
data in-register prior to saving to memory.  When we reorder the data in memory
we prevent the need to save multiple scalars to memory, making a single regular
store.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137238 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-10 19:30:14 +00:00
Devang Patel
103b8e653c Provide utility to extract and use lexical scoping information from machine instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137237 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-10 19:04:06 +00:00
Owen Anderson
8533ebad6f Add initial support for decoding NEON instructions in Thumb2 mode. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137236 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-10 19:01:10 +00:00
David Greene
0d886401b3 Make Record Name an Init 
Use an Init (ultimately a StringInit) to represent the Record name.
This allows the name to be composed by standard TableGen operators.
This will enable us to get rid of the ugly #NAME# hack processing and
naturally replace it with operators.  It also increases flexibility
and power of the TableGen language by allowing record identifiers to
be computed dynamically.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137232 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-10 18:27:46 +00:00
David Greene
0b18d59435 Add getAsUnquotedString 
Add a method to return an Init as an unquoted string.  This primarily
affects StringInit where we return the value without surrounding it
with quotes.

This is in preparation for removing the ugly #NAME# hack and replacing
it with standard TabelGen operators.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137231 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-10 18:27:45 +00:00
Andrew Trick
7cb3dcb927 Comments. Thanks for the spell check Nick! 
Also, my apologies for spoiling the autocomplete on SimplifyInstructions.cpp. I couldn't think of a better filename.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137229 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-10 18:07:05 +00:00
Bruno Cardoso Lopes
6ad251358e The following X86 pattern is incorrect: 
def : Pat<(X86Movss VR128:$src1,
                   (bc_v4i32 (v2i64 (load addr:$src2)))),
          (MOVLPSrm VR128:$src1, addr:$src2)>;
This matches a MOVSS dag with a MOVLPS instruction. However, MOVSS will replace only the low 32 bits of the register, while the MOVLPS instruction will replace the low 64 bits. A testcase is added and illustrates the bug and also modified the one that was already present. Patch by Tanya Lattner.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137227 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-10 17:45:17 +00:00
Eli Friedman
1cc5e38830 Whitespace. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137226 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-10 17:39:11 +00:00
Owen Anderson
fd9085dca3 Tabs --> spaces. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137225 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-10 17:38:05 +00:00
Owen Anderson
10cbaab7b7 Cleanups based on Nick Lewycky's feedback. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137224 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-10 17:36:48 +00:00
Owen Anderson
e66ef2d5f5 Rewrite some ARM InstrInfo functions to be most accepting of arbitrary register subclasses. Hopefully this fixes some buildbots. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137223 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-10 17:21:20 +00:00
Rafael Espindola
f5ade5d39a Add support for the R and Q constraints. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137217 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-10 16:26:42 +00:00
Bob Wilson
21ab6c066d Clarify a comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137204 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-10 05:02:22 +00:00
Andrew Trick
39f40299a6 Invoke SimplifyIndVar when we partially unroll a loop. Fixes PR10534. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137203 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-10 04:29:49 +00:00
Andrew Trick
bddb7f8210 Cleanup. Make ScalarEvolution an explicit argument of the 
SimplifyIndVar utility since it is required.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137202 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-10 04:22:26 +00:00
Andrew Trick
ea23daa446 SimplifyIndVar: make foldIVUser iterative to fold a chain of operands. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137199 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-10 04:01:31 +00:00
Benjamin Kramer
4a1a5eb95b Update CMake build. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137198 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-10 03:51:58 +00:00
Andrew Trick
4b4bb71bcd Added a SimplifyIndVar utility to simplify induction variable users 
based on ScalarEvolution without changing the induction variable phis.

This utility is the main tool of IndVarSimplifyPass, but the pass also
restructures induction variables in strange ways that are sensitive to
pass ordering. This provides a way for other loop passes to simplify
new uses of induction variables created during transformation. The
utility may be used by any pass that preserves ScalarEvolution. Soon
LoopUnroll will use it.

The net effect in this checkin is to cleanup the IndVarSimplify pass
by factoring out the SimplifyIndVar algorithm into a standalone utility.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137197 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-10 03:46:27 +00:00
Andrew Trick
2d31ae3d9d Cleanup. Added LoopBlocksDFS::perform for simple clients. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137195 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-10 01:59:05 +00:00
Bruno Cardoso Lopes
155a92a491 Fix a bug in vpermilps mask checking. Fix PR10560 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137194 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-10 01:54:17 +00:00