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Author SHA1 Message Date
Andrew Trick
1009c3299b SCEV: Use AssertingVH to catch dangling BasicBlock* when passes forget 
to notify SCEV of a change. Add forgetLoop in a couple of those places.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136797 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-03 18:32:11 +00:00
Andrew Trick
1c3ff6595f whitespace 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136795 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-03 18:28:21 +00:00
Bill Wendling
b7a01353ea Explain how clauses are applied. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136790 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-03 17:17:06 +00:00
Jakob Stoklund Olesen
56e3232d5a Handle IMPLICIT_DEF instructions in X86FloatingPoint. 
This fixes PR10575.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136787 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-03 16:33:19 +00:00
Jay Foad
e3fbe6c0fb Use cast<> instead of a C-style cast to get some free assertions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136771 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-03 10:05:04 +00:00
Chris Lattner
fb5179a2fa fix PR10286, a problem with the .ll printer handling block addresses that are out-of-scope. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136768 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-03 06:15:41 +00:00
Devang Patel
027cbf9329 Use byte offset, instead of element number, to access merged global. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136759 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-03 01:25:46 +00:00
Nick Lewycky
dbd2255091 Small cleanups: 
- use SmallVectorImpl& for the function argument.
  - ignore the operands on the GEP, even if they aren't constant! Much as we
    pretend the malloc succeeds, we pretend that malloc + whatever-you-GEP'd-by
    is not null. It's magic!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136757 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-03 01:11:40 +00:00
Bill Wendling
d0c0d44459 Add this back in for now. There are still a few passes which create unwind instructions at the moment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136756 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-03 01:07:57 +00:00
Nick Lewycky
d5061a9268 Fix logical error when detecting lifetime intrinsics. 
Don't replace a gep/bitcast with 'undef' because that will form a "free(undef)"
which in turn means "unreachable". What we wanted was a no-op. Instead, analyze
the whole tree and look for all the instructions we need to delete first, then
delete them second, not relying on the use_list to stay consistent.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136752 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-03 00:43:35 +00:00
Bill Wendling
19308a1ea1 Replace the 'UnwindInst' check with a check for 'ResumeInst', which also exits 
the function, because the UnwindInst is going away.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136751 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-03 00:30:19 +00:00
Jakob Stoklund Olesen
3f5beede1b Use the precomputed def presence in RAGreedy::calcSpillCost. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136742 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-02 23:04:08 +00:00
Jakob Stoklund Olesen
5ebca793db Inform SpillPlacement about blocks with defs. 
This information is not used for anything yet.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136741 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-02 23:04:06 +00:00
Jakob Stoklund Olesen
fe62d92b7b Rename {First,Last}Use to {First,Last}Instr. 
With a 'FirstDef' field right there, it is very confusing that FirstUse
refers to an instruction that may be a def.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136739 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-02 22:54:14 +00:00
Evan Cheng
779fa1b0b7 lldb doesn't need the edis dylib any more. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136738 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-02 22:53:48 +00:00
Eli Friedman
989f61e6c0 ARM backend support for atomicrmw and cmpxchg with non-monotonic ordering. Not especially pretty, but seems to work well enough. If this looks okay, I'll put together similar patches for Mips, PPC, and Alpha. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136737 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-02 22:44:16 +00:00
Jakob Stoklund Olesen
77ee1140a3 Add a BlockInfo::FirstDef field. 
This is either an invalid SlotIndex, or valno->def for the first value
defined inside the block. PHI values are not counted as defined inside
the block.

The FirstDef field will be used when estimating the cost of spilling
around a block.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136736 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-02 22:37:22 +00:00
Jakob Stoklund Olesen
4751eb760e Delete BlockInfo::LiveThrough. It wasn't used any more. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136735 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-02 22:37:20 +00:00
Nick Lewycky
d8030c79fd Teach InstCombine that lifetime intrincs aren't a real user on the result of a 
malloc call.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136732 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-02 22:08:01 +00:00
Jakob Stoklund Olesen
0e0a8806d4 Extend the SpillPlacement interface with two new features. 
The PrefBoth constraint is used for blocks that ideally want a live-in
value both on the stack and in a register. This would be used by a block
that has a use before interference forces a spill.

Secondly, add the ChangesValue flag to BlockConstraint. This tells
SpillPlacement if a live-in value on the stack can be reused as a
live-out stack value for free. If the block redefines the virtual
register, a spill would be required for that.

This extra information will be used by SpillPlacement to more accurately
calculate spill costs when a value can exist both on the stack and in a
register.

The simplest example is a basic block that reads the virtual register,
but doesn't change its value. Spilling around such a block requires a
reload, but no spill in the block.

The spiller already knows this, but the spill placer doesn't. That can
sometimes lead to suboptimal regions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136731 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-02 21:53:03 +00:00
Bill Wendling
f78faf84a8 Add the documentation for the 'landingpad' instruction. Improve the 'invoke' 
instruction's documentation to reference the landingpad and resume instructions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136729 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-02 21:52:38 +00:00
Rafael Espindola
c684e83e45 Move methods in PassManagerBuilder offline. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136727 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-02 21:50:27 +00:00
Rafael Espindola
3d453ac131 move PassManagerBuilder.h to IPO. This is a non intuitive place to put it, 
but it solves a layering violation since things in Support are not supposed to
use things in Transforms.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136726 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-02 21:50:24 +00:00
Eli Friedman
fe1926e351 Add new atomic instructions to SCCP. No functional change, but stops debug spam. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136723 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-02 21:35:16 +00:00
Nick Lewycky
3e69c13c30 Lifetime intrinsics on undef are dead. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136722 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-02 21:19:27 +00:00
Chad Rosier
11066fb937 Update the default bug report url in autoconf. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136721 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-02 20:53:43 +00:00
Chris Lattner
6445ecbdb9 no need to count the terminators. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136718 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-02 20:29:13 +00:00
Rafael Espindola
49cb9b8886 Assume .cfi_startproc is the first thing in a function. If the function is 
externally visable, create a local symbol to use in the CFE. If not, use the
function label itself.

Fixes PR10420.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136716 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-02 20:24:22 +00:00
Eli Friedman
6cdc1f43e6 Don't create a ridiculous EXTRACT_ELEMENT. PR10563. 
The testcase looks extremely fragile, so I'm adding an assertion which should catch any cases like this.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136711 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-02 18:38:35 +00:00
Owen Anderson
96279d0eff Fix the broken encodings for the VFP vmov.f32 and vmov.f64 instructions, as well as the comments that explain them incorrectly. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136707 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-02 18:30:00 +00:00
Jim Grosbach
b93509d382 Tidy up. 80 columns. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136705 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-02 18:16:36 +00:00
Jim Grosbach
e39389a58d ARM: rename addrmode7 to addr_offset_none. 
Use a more descriptive name so the code is more self-documenting.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136704 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-02 18:07:32 +00:00
Roman Divacky
c9c0cc1e46 Comment out the PPC relocation offset adjustment. It must be done differently. 
This unbreaks some tests.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136692 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-02 16:15:32 +00:00
Bruno Cardoso Lopes
ac5f13fe3f Make this kind of lowering to be supported by 256-bit instructions: 
shuffle (scalar_to_vector (load (ptr + 4))), undef, <0, 0, 0, 0>
To:
  shuffle (vload ptr)), undef, <1, 1, 1, 1>
Fix PR10494

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136691 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-02 16:06:18 +00:00
Roman Divacky
29630ff214 Remove trailing semicolon. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136690 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-02 15:54:03 +00:00
Roman Divacky
2c0d69fad0 Sketch out PowerPC ELF writer. This is enough to get clang -integrated-as 
to compile a working hello world on FreeBSD/PPC32.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136689 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-02 15:51:38 +00:00
Bill Wendling
086da7e680 Duncan's english is better than mine. :-) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136684 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-02 06:39:13 +00:00
Bill Wendling
1600525385 Remove the LLVMBuildUnwind C API function. 
The 'unwind' function is going away with the new EH rewrite. This is step 0 in
keeping front-ends from using it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136683 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-02 06:20:17 +00:00
Andrew Trick
fcb4356dee Use consistent terminology for loop exit/exiting blocks. Name change only. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136677 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-02 04:23:35 +00:00
Benjamin Kramer
7a3824b923 Remove empty test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136675 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-02 02:47:45 +00:00
Owen Anderson
9b7fdc7e8a Revert r136503 and r136480 in an effort to fix non-determinism in the llvm-gcc buildbots on i386. Devang is looking into the root cause. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136674 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-02 02:23:42 +00:00
John McCall
74699fda15 I am the code owner for Clang's IR generation; this has been true 
for awhile, but it's good to make this official.  

Just to be clear, Doug and Ted "elected" me to this position.

Might as well add myself to the credits list while I'm at it.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136673 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-02 01:38:19 +00:00
Eli Friedman
101c81da45 Minor wording tweak for memory model. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136668 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-02 01:15:34 +00:00
Eli Friedman
9b0a479bb7 Fix a couple silly typos in IRBuilder in the new atomic instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136665 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-02 00:45:35 +00:00
Nick Lewycky
3207c9a440 Bail from FastISel when we encounter a volatile memset intrinsic. Patch by Ivan 
Krasin!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136663 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-02 00:40:16 +00:00
Owen Anderson
cf6039548b Make the FixedLengthDecoderEmitter smart enough to autogenerate decoders for encodings like "let Inst{11-7} = foo;", where the RHS has no bitwidth specifiers. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136660 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-01 22:45:43 +00:00
Jim Grosbach
02c8460a74 Move imm0_255 to ARMInstrInfo.td with the other immediate predicates. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136656 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-01 22:02:20 +00:00
Jim Grosbach
b2756afa27 Fix comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136655 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-01 21:55:12 +00:00
Bruno Cardoso Lopes
55244ceac4 Add v4f64 -> v2f32 fp_round support. Also add a testcase to exercise 
the legalizer. This commit together with the two previous ones fixes
PR10495.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136654 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-01 21:54:09 +00:00
Bruno Cardoso Lopes
aed890bee0 Teach PreprocessISelDAG to be aware of vector types and to not process them. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136653 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-01 21:54:05 +00:00