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Author SHA1 Message Date
Bill Wendling
9db96fc81f Remove CreateUnwind from the IRBuillder. 
llvm-svn: 136811
 2011-08-03 20:53:38 +00:00
Benjamin Kramer
6fbd7b63c2 Remove unused variables. 
llvm-svn: 136803
 2011-08-03 19:53:48 +00:00
Bob Wilson
03c734d202 Some revisions to Devang's change r136759 for merged global debug info. 
llvm-svn: 136802
 2011-08-03 19:42:51 +00:00
Bill Wendling
6eae915356 Go back to the old definition. It's not clear that a 'resume' can be 'outlined' from the function with the landing pad for all platforms. 
llvm-svn: 136799
 2011-08-03 18:37:32 +00:00
Andrew Trick
bbb5c7b0aa SCEV: Use AssertingVH to catch dangling BasicBlock* when passes forget 
to notify SCEV of a change. Add forgetLoop in a couple of those places.

llvm-svn: 136797
 2011-08-03 18:32:11 +00:00
Andrew Trick
0ba77723bf whitespace 
llvm-svn: 136795
 2011-08-03 18:28:21 +00:00
Bill Wendling
da7eb90ea1 Explain how clauses are applied. 
llvm-svn: 136790
 2011-08-03 17:17:06 +00:00
Jakob Stoklund Olesen
002075193b Handle IMPLICIT_DEF instructions in X86FloatingPoint. 
This fixes PR10575.

llvm-svn: 136787
 2011-08-03 16:33:19 +00:00
Jay Foad
095dcdbd48 Use cast<> instead of a C-style cast to get some free assertions. 
llvm-svn: 136771
 2011-08-03 10:05:04 +00:00
Chris Lattner
d4b0ee77a9 fix PR10286, a problem with the .ll printer handling block addresses that are out-of-scope. 
llvm-svn: 136768
 2011-08-03 06:15:41 +00:00
Devang Patel
99a2f0d98c Use byte offset, instead of element number, to access merged global. 
llvm-svn: 136759
 2011-08-03 01:25:46 +00:00
Nick Lewycky
16af9d24c5 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!

llvm-svn: 136757
 2011-08-03 01:11:40 +00:00
Bill Wendling
752f75c8ce Add this back in for now. There are still a few passes which create unwind instructions at the moment. 
llvm-svn: 136756
 2011-08-03 01:07:57 +00:00
Nick Lewycky
82418c24b8 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.

llvm-svn: 136752
 2011-08-03 00:43:35 +00:00
Bill Wendling
ad3c4a32ea Replace the 'UnwindInst' check with a check for 'ResumeInst', which also exits 
the function, because the UnwindInst is going away.

llvm-svn: 136751
 2011-08-03 00:30:19 +00:00
Jakob Stoklund Olesen
ec971376f9 Use the precomputed def presence in RAGreedy::calcSpillCost. 
llvm-svn: 136742
 2011-08-02 23:04:08 +00:00
Jakob Stoklund Olesen
ffdbb7cc16 Inform SpillPlacement about blocks with defs. 
This information is not used for anything yet.

llvm-svn: 136741
 2011-08-02 23:04:06 +00:00
Jakob Stoklund Olesen
4b62c6ea69 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.

llvm-svn: 136739
 2011-08-02 22:54:14 +00:00
Evan Cheng
c4182308a3 lldb doesn't need the edis dylib any more. 
llvm-svn: 136738
 2011-08-02 22:53:48 +00:00
Eli Friedman
e958558a31 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. 
llvm-svn: 136737
 2011-08-02 22:44:16 +00:00
Jakob Stoklund Olesen
eb92b95baf 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.

llvm-svn: 136736
 2011-08-02 22:37:22 +00:00
Jakob Stoklund Olesen
7ec9def2ac Delete BlockInfo::LiveThrough. It wasn't used any more. 
llvm-svn: 136735
 2011-08-02 22:37:20 +00:00
Nick Lewycky
05fed81aa9 Teach InstCombine that lifetime intrincs aren't a real user on the result of a 
malloc call.

llvm-svn: 136732
 2011-08-02 22:08:01 +00:00
Jakob Stoklund Olesen
83062a212f 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.

llvm-svn: 136731
 2011-08-02 21:53:03 +00:00
Bill Wendling
9f3e3462b8 Add the documentation for the 'landingpad' instruction. Improve the 'invoke' 
instruction's documentation to reference the landingpad and resume instructions.

llvm-svn: 136729
 2011-08-02 21:52:38 +00:00
Rafael Espindola
2b0d064f3b Move methods in PassManagerBuilder offline. 
llvm-svn: 136727
 2011-08-02 21:50:27 +00:00
Rafael Espindola
73efcf56f6 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.

llvm-svn: 136726
 2011-08-02 21:50:24 +00:00
Eli Friedman
043fa7cc86 Add new atomic instructions to SCCP. No functional change, but stops debug spam. 
llvm-svn: 136723
 2011-08-02 21:35:16 +00:00
Nick Lewycky
2f04a6b411 Lifetime intrinsics on undef are dead. 
llvm-svn: 136722
 2011-08-02 21:19:27 +00:00
Chad Rosier
f2c22fe8eb Update the default bug report url in autoconf. 
llvm-svn: 136721
 2011-08-02 20:53:43 +00:00
Chris Lattner
a780c5c9f1 no need to count the terminators. 
llvm-svn: 136718
 2011-08-02 20:29:13 +00:00
Rafael Espindola
cefc38659a 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.

llvm-svn: 136716
 2011-08-02 20:24:22 +00:00
Eli Friedman
d185fa3deb 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.

llvm-svn: 136711
 2011-08-02 18:38:35 +00:00
Owen Anderson
48156a8b45 Fix the broken encodings for the VFP vmov.f32 and vmov.f64 instructions, as well as the comments that explain them incorrectly. 
llvm-svn: 136707
 2011-08-02 18:30:00 +00:00
Jim Grosbach
ccb9f07844 Tidy up. 80 columns. 
llvm-svn: 136705
 2011-08-02 18:16:36 +00:00
Jim Grosbach
138b79f1ea ARM: rename addrmode7 to addr_offset_none. 
Use a more descriptive name so the code is more self-documenting.

llvm-svn: 136704
 2011-08-02 18:07:32 +00:00
Roman Divacky
c2f4208960 Comment out the PPC relocation offset adjustment. It must be done differently. 
This unbreaks some tests.

llvm-svn: 136692
 2011-08-02 16:15:32 +00:00
Bruno Cardoso Lopes
ac0984dc7e 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

llvm-svn: 136691
 2011-08-02 16:06:18 +00:00
Roman Divacky
126f9bf639 Remove trailing semicolon. 
llvm-svn: 136690
 2011-08-02 15:54:03 +00:00
Roman Divacky
7453a0dcd6 Sketch out PowerPC ELF writer. This is enough to get clang -integrated-as 
to compile a working hello world on FreeBSD/PPC32.

llvm-svn: 136689
 2011-08-02 15:51:38 +00:00
Bill Wendling
ea8143f430 Duncan's english is better than mine. :-) 
llvm-svn: 136684
 2011-08-02 06:39:13 +00:00
Bill Wendling
b37af02067 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.

llvm-svn: 136683
 2011-08-02 06:20:17 +00:00
Andrew Trick
86f6a3c645 Use consistent terminology for loop exit/exiting blocks. Name change only. 
llvm-svn: 136677
 2011-08-02 04:23:35 +00:00
Benjamin Kramer
5aff5a9498 Remove empty test. 
llvm-svn: 136675
 2011-08-02 02:47:45 +00:00
Owen Anderson
1d291c9425 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. 
llvm-svn: 136674
 2011-08-02 02:23:42 +00:00
John McCall
fcf5d9ff74 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.

llvm-svn: 136673
 2011-08-02 01:38:19 +00:00
Eli Friedman
22875e2d35 Minor wording tweak for memory model. 
llvm-svn: 136668
 2011-08-02 01:15:34 +00:00
Eli Friedman
564f52b2bf Fix a couple silly typos in IRBuilder in the new atomic instructions. 
llvm-svn: 136665
 2011-08-02 00:45:35 +00:00
Nick Lewycky
3a0577c3fa Bail from FastISel when we encounter a volatile memset intrinsic. Patch by Ivan 
Krasin!

llvm-svn: 136663
 2011-08-02 00:40:16 +00:00
Owen Anderson
00a562a5c5 Make the FixedLengthDecoderEmitter smart enough to autogenerate decoders for encodings like "let Inst{11-7} = foo;", where the RHS has no bitwidth specifiers. 
llvm-svn: 136660
 2011-08-01 22:45:43 +00:00