Commit Graph

42678 Commits

Author SHA1 Message Date
Jim Grosbach
458f2dc5d1 imm12 operands aren't Thumb2 only, so rename the printer helper function.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117291 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-25 20:00:01 +00:00
Dan Gohman
269008ee83 Add a comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117288 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-25 19:47:25 +00:00
Owen Anderson
162875a9f3 Add correct instruction encodings for vbic, vorn, and vmvn.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117282 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-25 18:43:52 +00:00
Rafael Espindola
4921e2356e Add a virtual destructor.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117280 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-25 18:38:32 +00:00
Owen Anderson
8c71eff594 Provide correct NEON encodings for vand, veor, and vorr.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117279 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-25 18:28:30 +00:00
Owen Anderson
d0c5b6170f Add NEON encoding tests for vcgt and vacgt.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117276 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-25 18:03:59 +00:00
Rafael Espindola
cecbc3d282 Add support for emitting ARM file attributes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117275 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-25 17:50:35 +00:00
Owen Anderson
10c15e5d58 Add tests for NEON encodings of vcge and vacge.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117274 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-25 17:49:32 +00:00
Owen Anderson
4fe20bbd66 Add a warning about our inability to test the encoding of vceq with immediate zero.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117273 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-25 17:33:02 +00:00
Jakob Stoklund Olesen
d3b4895414 In which I learn how to forward declare template classes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117272 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-25 17:27:30 +00:00
Dan Gohman
e46a3881fc Update comments; BasicAA is no longer necessarily the end of the chain.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117268 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-25 16:29:52 +00:00
Dan Gohman
852dda4625 Reintroduce these asserts, now that BasicAA is a normal AliasAnalysis pass.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117266 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-25 16:28:57 +00:00
Dan Gohman
17a0bf996f Fix a case where instcombine was stripping metadata (and alignment)
from stores when folding in bitcasts.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117265 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-25 16:16:27 +00:00
Charles Davis
970bfcc7d8 Add a new 'hotpatch' attribute. This attribute will insert a two-byte no-op
instruction at the beginning of each function that has the attribute, allowing
the function to be easily hooked and/or patched.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117264 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-25 15:37:09 +00:00
Duncan Sands
05897c8f26 ATTRIBUTE_UNUSED has been renamed to LLVM_ATTRIBUTE_UNUSED.
Rather than rename this instance, use the cast-to-void idiom
instead.  This will hopefully fix the windows buildbots.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117262 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-25 13:10:03 +00:00
Rafael Espindola
24ba4f7f5f Add X86::reloc_global_offset_table and use it to have a single place where
we check for _GLOBAL_OFFSET_TABLE_.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117241 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-24 17:35:42 +00:00
Duncan Sands
5f28475b30 Fix PR8445: a block with no predecessors may be the entry block, in which case
it isn't unreachable and should not be zapped.  The check for the entry block
was missing in one case: a block containing a unwind instruction.  While there,
do some small cleanups: "M" is not a great name for a Function* (it would be
more appropriate for a Module*), change it to "Fn"; use Fn in more places.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117224 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-24 12:23:30 +00:00
Benjamin Kramer
a53fe6070c SmallVectorize.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117213 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-23 17:10:24 +00:00
Eric Christopher
a4633f5d74 Move rejection of NEON parameters earlier in fast isel call processing,
note that we can actually handle some f64 arguments.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117209 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-23 09:37:17 +00:00
Benjamin Kramer
4d1dca92bd Make the disassembler tables const so they end up in read-only memory.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117206 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-23 09:10:44 +00:00
Michael J. Spencer
c527407010 X86: Emit _fltused instead of __fltused on Windows x64.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117205 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-23 09:06:59 +00:00
Chandler Carruth
19e57025d4 Move the remaining attribute macros to systematic names based on the attribute
name and prefixed with 'LLVM_'.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117203 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-23 08:40:19 +00:00
Chandler Carruth
5117709a1d Remove a define which is never referenced.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117202 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-23 08:25:16 +00:00
Chandler Carruth
100c267249 Switch attribute macros to use 'LLVM_' as a prefix. We retain the old names
until other LLVM projects using these are cleaned up.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117200 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-23 08:10:43 +00:00
Chandler Carruth
2b3ef8b065 Fix a likely bug in an assertion by adding parentheses around '||'. This bug
was found by a GCC warning. ;]


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117199 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-23 07:46:14 +00:00
Evan Cheng
5c2d428f43 Enable ARM fastcc.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117194 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-23 02:19:37 +00:00
Evan Cheng
ec6906ba47 Properly model the latency of register defs which are 1) function returns or
2) live-outs.

Previously the post-RA schedulers completely ignore these dependencies since
returns, branches, etc. are all scheduling barriers. This patch model the
latencies between instructions being scheduled and the barriers. It also
handle calls by marking their register uses.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117193 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-23 02:10:46 +00:00
Evan Cheng
dd9dd6f857 Latency between CPSR def and branch is zero.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117192 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-23 02:04:38 +00:00
Jakob Stoklund Olesen
7871687604 Verify LiveIntervals against the CFG, ensuring that live-in values are live-out
of all predecessors.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117191 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-23 00:49:09 +00:00
Jim Grosbach
a9a968d1ef Trailing whitespace.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117188 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-22 23:48:29 +00:00
Andrew Trick
f433106054 Nonvirtual dtor that was accessible enough to be bad.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117180 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-22 23:33:19 +00:00
Gabor Greif
41f31ef28e fix memory-layout assumption which only holds on little-endian systems
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117176 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-22 23:16:11 +00:00
Andrew Trick
14e8d71cc9 This is a prototype of an experimental register allocation
framework. It's purpose is not to improve register allocation per se,
but to make it easier to develop powerful live range splitting. I call
it the basic allocator because it is as simple as a global allocator
can be but provides the building blocks for sophisticated register
allocation with live range splitting. 

A minimal implementation is provided that trivially spills whenever it
runs out of registers. I'm checking in now to get high-level design
and style feedback. I've only done minimal testing. The next step is
implementing a "greedy" allocation algorithm that does some register
reassignment and makes better splitting decisions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117174 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-22 23:09:15 +00:00
Jakob Stoklund Olesen
3bf7cf9f0e Add more verification of LiveIntervals.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117170 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-22 22:48:58 +00:00
Jakob Stoklund Olesen
2bfb324684 Be more strict about detecting multi-use blocks for isolation.
When a block has exactly two uses and the register is both live-in and live-out,
don't isolate the block. We would be inserting two copies, so we haven't really
made any progress.

If the live-in and live-out values separate into disconnected components after
splitting, we would be making progress. We can't detect that for now.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117169 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-22 22:48:56 +00:00
Jim Grosbach
f8da5f5dfa ARM mode encoding information for CLZ, RBIT, REV*, and PKH*.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117165 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-22 22:12:16 +00:00
Evan Cheng
c8f46c45a0 Unbreak build.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117155 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-22 21:49:09 +00:00
Bob Wilson
364f17c471 Teach instcombine to set the alignment arguments for NEON load/store intrinsics.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117154 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-22 21:41:48 +00:00
Evan Cheng
b179b46cc5 Transfer implicit ops when forming load multiple and return instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117151 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-22 21:29:58 +00:00
Jakob Stoklund Olesen
2c1442e1b2 Be more strict when detecting critical edges before loop splitting.
An exit block with a critical edge must only have predecessors in the loop, or
just before the loop. This guarantees that the inserted copies in the loop
predecessors dominate the exit block.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117144 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-22 20:28:23 +00:00
Jakob Stoklund Olesen
532de3dc6e Add print methods
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117143 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-22 20:28:21 +00:00
Owen Anderson
9b26497273 Add correct NEON encodings for vqdmlal.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117134 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-22 19:35:48 +00:00
Jim Grosbach
385e136dce Add the encoding information for the rest of the ARM mode multiply instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117133 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-22 19:15:30 +00:00
Owen Anderson
92205842ca Provide correct encodings for NEON vmlal.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117131 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-22 19:05:25 +00:00
Evan Cheng
1f8b40d51c Silence compiler warnings.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117128 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-22 18:57:05 +00:00
Owen Anderson
18341e9e31 Provide correct NEON encodings for vmla.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117126 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-22 18:54:37 +00:00
Jim Grosbach
3870b750e6 More ARM multiply instuction binary encodings.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117121 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-22 18:35:16 +00:00
Evan Cheng
76f920d316 Add fastcc cc: pass and return VFP / NEON values in registers. Controlled by -arm-fastcc for now.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117119 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-22 18:23:05 +00:00
Jim Grosbach
929a7056d8 Parameterize a bit of ARM encoding information, simplifying some instruction
definitions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117114 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-22 17:42:06 +00:00
Benjamin Kramer
a3ac427507 Make some symbols static, move classes into anonymous namespaces.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117111 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-22 17:35:07 +00:00
Jim Grosbach
9463d0e400 More ARM multiply instruction encoding information.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117108 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-22 17:16:17 +00:00
Wesley Peck
eecb858ca8 Making the e_machine configurable by the target backend in ELFObjectWriter.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117099 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-22 15:52:49 +00:00
Andrew Trick
0966ec0861 Reverting r117031 to cleanup valgrind errors.
It doesn't look like anything is wrong with the checkin,
but the new test cases expose a mem bug in AsmParser.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117087 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-22 03:58:29 +00:00
Eric Christopher
4f512efee9 Add some basic ret instruction support to arm fast-isel.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117085 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-22 01:28:00 +00:00
Sean Callanan
751752e7ca Fixed handling of immediate operand sizes, which
weren't properly reflecting the OperandSize attribute
of the instruction leading to improper decoding of
certain instructions with the 66H prefix.  Also added
a test case for this.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117084 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-22 01:24:11 +00:00
NAKAMURA Takumi
2172f3cd97 Win32/Signals.inc: DontRemoveFileOnSignal(): Please acquire the CriticalSection.
It choked BugPoint on Mingw.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117083 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-22 01:23:50 +00:00
Jim Grosbach
f50af8b5b8 ARM binary encoding for some of the multiply instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117080 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-21 22:52:30 +00:00
Jim Grosbach
3686046a2c ARM binary encodings for MVN variants.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117076 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-21 22:19:32 +00:00
Jim Grosbach
fe40f9551c Trailing whitespace.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117073 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-21 22:04:05 +00:00
Jim Grosbach
3fea19105d ARM Binary encoding information for BFC/BFI instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117072 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-21 22:03:21 +00:00
Dan Gohman
ee135131b1 Add some more documentation.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117070 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-21 21:55:35 +00:00
Eric Christopher
1778772d1b These don't need to be virtual.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117068 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-21 21:47:51 +00:00
Michael J. Spencer
ef0401ad66 Fix Warnings.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117062 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-21 20:49:38 +00:00
Michael J. Spencer
391b43bf33 X86: Base _fltused on the FunctionType of the called value instead of the potentially null "CalledFunction". Thanks Duncan!
This is needed for indirect calls.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117061 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-21 20:49:23 +00:00
Owen Anderson
90d4cf9314 Move the encoding logic for Q registers into getMachineOpValue().
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117060 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-21 20:49:13 +00:00
Mikhail Glushenkov
84ba14f6d0 Trailing whitespace.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117058 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-21 20:40:39 +00:00
Owen Anderson
d451f888b8 ARM encodes Q registers as 2xregno (i.e. the number of the D register that corresponds to the lower
half of the Q register), rather than with just regno.  This allows us to unify the encodings for
a lot of different NEON instrucitons that differ only in whether they have Q or D register operands.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117056 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-21 20:21:49 +00:00
Eric Christopher
5b924809e4 Handle storing args to the stack for calls.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117055 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-21 20:09:54 +00:00
Wesley Peck
4da992aeba Adding initial AsmParser implementation for the MBlaze backend. It is
mostly based on the ARM AsmParser at this time and is not particularly
functional.

Changed the MBlaze data layout from:
    "E-p:32:32-i8:8:8-i16:16:16-i64:32:32-f64:32:32-v64:32:32-v128:32:32-n32"
to:
    "E-p:32:32:32-i8:8:8-i16:16:16"
because the MicroBlaze doesn't have i64, f64, v64, or v128 data types.

Cleaned up the MBlaze source code:
    1. The floating point register class has been removed. The
       MicroBlaze does not have floating point registers. Floating
       point values are simply stored in integer registers.
    2. Renaming the CPURegs register class to GPR to reflect the
       standard naming.
    3. Removing a lot of stale code from AsmPrinter after
       the conversion to InstPrinter.
    4. Simplified sign extended loads by marking them as
       expanded in ISelLowering.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117054 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-21 19:48:38 +00:00
Dan Gohman
bc078c81e6 Explain what "constant" means here.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117053 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-21 19:45:09 +00:00
Eric Christopher
212ae937bb More load/store refactoring, call reg+offset simplification from within
the emitter to handle the addresses. Only simplify the offset if we need
to - also fix bug where in addrmode 5 we weren't dividing the offset by
4, which showed up due to not always lowering.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117051 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-21 19:40:30 +00:00
Jim Grosbach
3ab5658a12 trailing whitespace
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117050 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-21 19:38:40 +00:00
Dan Gohman
de38897cfc Update comments.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117048 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-21 19:01:22 +00:00
Owen Anderson
1e93466c3a Add correct NEON encodings for vhadd and vrhadd.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117047 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-21 18:55:04 +00:00
Jakob Stoklund Olesen
9d999772df Don't include the destination interval in the union when computing
Parent - union(Y, ...). Doh.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117042 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-21 18:47:08 +00:00
Jakob Stoklund Olesen
0a7bbcb0cc Permit landing pad successor blocks when verifying basic blocks that end in an
unconditional branch.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117041 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-21 18:47:06 +00:00
Owen Anderson
9d50559bae Add correct encodings for NEON vaddw.s* and vaddw.u*.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117040 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-21 18:20:25 +00:00
Owen Anderson
e0e6dc3f4e Provide correct NEON encodings for vaddl.u* and vaddl.s*.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117039 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-21 18:09:17 +00:00
Rafael Espindola
8c8bc05a38 Do not recurse into symbol refs that have a variant kind. This prevents us
from losing the variant when producing a relocation on an alias.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117037 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-21 18:00:20 +00:00
Kevin Enderby
0b9325c97d More tweaks to X86 instructions to allow the 'w' suffix in places it makes
sense, when the instruction takes the 16-bit ax register or m16 memory
location.  These changes to llvm-mc matches what the darwin assembler allows
for these instructions.  Also added the missing flex (without the wait prefix)
and ud2a as an alias to ud2 (still to add ud2b).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117031 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-21 17:16:46 +00:00
Duncan Sands
bf9fc53f46 AlignLoc is never used for anything - zap it (gcc-4.6 warning).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117025 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-21 16:07:10 +00:00
Duncan Sands
dbbd99faf1 The return value of this call is not used, so no point
in assigning it to a variable (gcc-4.6 warning).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117024 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-21 16:06:28 +00:00
Duncan Sands
2b55f56df8 RetOp is not actually used for anything useful (though
it looks like maybe it was supposed to be used in the
test...), so zap it (gcc-4.6 warning).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117023 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-21 16:05:44 +00:00
Duncan Sands
9bc20ca728 The variable liTRC is not used for anything useful, zap it
(gcc-4.6 warning).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117022 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-21 16:04:43 +00:00
Duncan Sands
6abfa46987 Remove some variables that are never really used
(gcc-4.6 warns about these).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117021 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-21 16:03:28 +00:00
Duncan Sands
1e1ca0b56d Add parentheses to pacify gcc, which warns otherwise.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117020 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-21 16:02:12 +00:00
Duncan Sands
b35fd448ce Fix the cleanup process of exception information in JIT. Now JIT
deregisters registered by it FDE structures allowing consecutive
JIT runs to succeed.  Patch by Yuri.  Fixes PR8285.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117004 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-21 08:57:29 +00:00
Wesley Peck
42bd9b30d9 Removing stale AsmPrinter directory from MicroBlaze backend.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116998 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-21 05:05:06 +00:00
Oscar Fuentes
b692360955 Deleted lib/Target/MBlaze/AsmPrinter/CMakeLists.txt. This way the
CMake build does not try to build that library, which collides with
MBlaze/InstPrinter.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116997 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-21 05:01:26 +00:00
Wesley Peck
4e9141fd4c Recommit 116986 with capitalization typo fixed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116993 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-21 03:57:26 +00:00
Andrew Trick
5b7a825ec5 putback r116983 and fix simple-fp-encoding.ll tests
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116992 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-21 03:40:16 +00:00
Wesley Peck
60e7127e86 Reverting the commit 116986. It was breaking the build on llvm-x86_64-linux though it
compiles on OS X. I'll ensure that it builds on a linux machine before committing
again.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116991 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-21 03:34:22 +00:00
Owen Anderson
d9707e3d85 Revert r116983, which is breaking all the buildbots.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116987 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-21 03:11:16 +00:00
Wesley Peck
13a949071c Major update of the MicroBlaze backend. The new features are:
1. A delay slot filler that searches for valid instructions
       to fill the delay slot with. Previously NOPs would always
       be inserted into delay slots.
    2. Support for MC based instruction printer added.
    3. Support for MC based machine code generation and ELF
       file generation. ELF file generation does not yet
       completely work as much of the ELF support infrastructure
       is still x86/x86-64 specific.
    4. General clean up of the MBlaze backend code. Much of the
       tablegen code has been cleanup and simplified.

Bug Fixes:
    1. Removed duplicate periods from subtarget feature descriptions.
    2. Many of the instructions had bad machine code information
       in the tablegen files. Much of this has been fixed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116986 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-21 03:09:55 +00:00
Michael J. Spencer
e9c253e0bc X86: Add alloca probing to dynamic alloca on Windows. Fixes PR8424.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116984 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-21 01:41:01 +00:00
Evan Cheng
d6865de2d2 Add missing scheduling itineraries for transfers between core registers and VFP registers.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116983 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-21 01:12:00 +00:00
Owen Anderson
d7795540d0 Implement correct encodings for NEON vadd, both integer and floating point.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116981 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-21 00:48:00 +00:00
Michael J. Spencer
dd0a00a6e3 CodeGen-Windows: Only emit _fltused if a VarArg function is called with floating point args.
This should be the minimum set of functions that could possibly need it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116978 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-21 00:08:21 +00:00
Eric Christopher
2d8f6fe610 Custom lower f64 args passed in integer registers.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116977 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-21 00:01:47 +00:00
Michael J. Spencer
6e56b18e57 Fix Whitespace.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116972 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-20 23:40:27 +00:00
Bill Wendling
01aabdac44 Add encoding for moving a value between two ARM core registers and a doublework
extension register.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116970 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-20 23:37:40 +00:00
Jakob Stoklund Olesen
f1583ae84a Remember to keep track of rematted values.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116962 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-20 22:50:42 +00:00
Bill Wendling
7d31a169af Add encodings for movement between ARM core registers and single-precision
registers.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116961 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-20 22:44:54 +00:00
Dan Gohman
adb30d211b Memdep says that an instruction clobbers itself
when it means there is no specific clobber instruction.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116960 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-20 22:37:41 +00:00
Owen Anderson
75f6df283f Attempt to fix valgrind complaining about (benign) leaks in pass registration by having PassRegistry
delete PassInfo objects that were created using new-style initialization.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116959 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-20 22:22:30 +00:00
Dan Gohman
ba13864483 Factor out the main aliasing check into a separate function.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116958 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-20 22:11:14 +00:00
Evan Cheng
134982daa9 More accurate estimate / tracking of register pressure.
- Initial register pressure in the loop should be all the live defs into the
  loop. Not just those from loop preheader which is often empty.
- When an instruction is hoisted, update register pressure from loop preheader
  to the original BB.
- Treat only use of a virtual register as kill since the code is still SSA.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116956 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-20 22:03:58 +00:00
Dale Johannesen
e4d31593c5 Fix crash introduced in 116852. 8573915.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116955 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-20 22:03:37 +00:00
Dan Gohman
0b62f95ea8 Fix comments; the type graph is currently a tree, not a DAG.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116954 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-20 22:02:58 +00:00
Jakob Stoklund Olesen
080c316ff8 Move some of the InlineSpiller rematerialization code into LiveRangeEdit.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116951 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-20 22:00:51 +00:00
Dale Johannesen
e93d99cf07 Remove Synthesizable from the Type system; as MMX vector
types are no longer Legal on X86, we don't need it.
No functional change.  8499854.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116947 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-20 21:32:10 +00:00
Jakob Stoklund Olesen
9b25940474 When SimpleRegisterCoalescing is trimming kill flags on a physical register
operand, also check if subregisters are killed.

Add <imp-def> operands for subregisters that remain alive after a super register
is killed.

I don't have a testcase for this that reproduces on trunk. <rdar://problem/8441758>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116940 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-20 18:45:55 +00:00
Rafael Espindola
64e6719ee8 Handle _GLOBAL_OFFSET_TABLE_ correctly.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116932 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-20 16:46:08 +00:00
Michael J. Spencer
9f608b1919 Use C++03...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116927 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-20 16:00:45 +00:00
Michael J. Spencer
a9cf7b8443 System-Win32/Path: Fix incorrect assumption in isValid.
A recent commit to clang exposed a bug in the Win32 Path code. This is a
minimal fix for it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116925 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-20 15:23:58 +00:00
Chandler Carruth
1cd9708f5c Remove remaining uses of ATTRIBUTE_UNUSED on variables, and delete three
#includes in the process.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116919 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-20 08:27:02 +00:00
Eric Christopher
3659ac22c0 Fix a TODO by removing some unnecesary copies.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116915 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-20 08:02:24 +00:00
NAKAMURA Takumi
f10c519249 Add ATTRIBUTE_UNUSED for -Asserts.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116909 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-20 04:05:29 +00:00
Tobias Grosser
6551360535 Add RegionPass support.
A RegionPass is executed like a LoopPass but on the regions detected by the
RegionInfo pass instead of the loops detected by the LoopInfo pass.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116905 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-20 01:54:44 +00:00
Douglas Gregor
3e26c3c7d4 Fix CMake build
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116903 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-20 01:36:56 +00:00
Jim Grosbach
b8e67fc92b Fix backwards conditional.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116897 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-20 01:10:01 +00:00
Dan Gohman
f96e4bd2a3 Make CodeGen TBAA-aware.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116890 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-20 00:31:05 +00:00
Jim Grosbach
8b95c3ebfb Add dynamic realignment when rematerializing the base register.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116886 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-20 00:02:50 +00:00
Jim Grosbach
f6d7df6f21 Nuke a commented out bit that got missed a while back.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116883 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-19 23:48:47 +00:00
Jim Grosbach
e4ad387a5a Add a pre-dispatch SjLj EH hook on the unwind edge for targets to do any
setup they require. Use this for ARM/Darwin to rematerialize the base
pointer from the frame pointer when required. rdar://8564268

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116879 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-19 23:27:08 +00:00
Dan Gohman
db4708cf86 Move NoAA out of BasicAliasAnalysis.cpp into its own file, now that
it doesn't have a special relationship with BasicAliasAnalysis
anymore.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116876 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-19 23:09:08 +00:00
Dan Gohman
3da848bbda Reapply r116831 and r116839, converting AliasAnalysis to use
uint64_t, plus fixes for places I missed before.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116875 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-19 22:54:46 +00:00
Douglas Gregor
5ee568ac27 Extend StringRef's edit-distance algorithm to permit an upper bound on the allowed edit distance
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116867 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-19 22:13:48 +00:00
Jim Grosbach
8155ea4c3a Update comments to remove obsolete references.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116863 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-19 21:34:47 +00:00
Dan Gohman
1db839e734 Revert r116831 and r116839, which are breaking selfhost builds.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116858 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-19 21:06:16 +00:00
Jakob Stoklund Olesen
2594746045 Shrink MachineOperand from 40 to 32 bytes on 64-bit hosts.
Pull an unsigned out of the Contents union such that it has the same size as two
pointers and no padding.

Arrange members such that the Contents union and all pointers can be 8-byte
aligned without padding.

This speeds up code generation by 0.8% on a 64-bit host. 32-bit hosts should be
unaffected.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116857 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-19 20:56:32 +00:00
Owen Anderson
205942a4a5 Passes do not need to recursively initialize passes that they preserve, if
they do not also require them.  This allows us to reduce inter-pass linkage
dependencies.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116854 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-19 20:08:44 +00:00
Dale Johannesen
575cd148ce Enable using vdup for vector constants which are splat of
integers by default, and remove the controlling flag, now
that LICM will hoist such vdup's.  8003375.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116852 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-19 20:00:17 +00:00
Rafael Espindola
bd70118f16 Small cleanups and fixes in preparation for fixing _GLOBAL_OFFSET_TABLE_.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116848 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-19 19:31:37 +00:00
Evan Cheng
2312842de0 Re-enable register pressure aware machine licm with fixes. Hoist() may have
erased the instruction during LICM so UpdateRegPressureAfter() should not
reference it afterwards.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116845 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-19 18:58:51 +00:00
Dan Gohman
9cb4c7f878 Oops, check in all the files for converting AliasAnalysis to
use uint64_t.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116839 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-19 18:08:27 +00:00
Dan Gohman
4cccb87b4d Change AliasAnalysis and its clients to use uint64_t instead of unsigned
for representing object sizes, for consistency with other parts of LLVM.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116831 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-19 18:00:02 +00:00
Owen Anderson
081c34b725 Get rid of static constructors for pass registration. Instead, every pass exposes an initializeMyPassFunction(), which
must be called in the pass's constructor.  This function uses static dependency declarations to recursively initialize
the pass's dependencies.

Clients that only create passes through the createFooPass() APIs will require no changes.  Clients that want to use the
CommandLine options for passes will need to manually call the appropriate initialization functions in PassInitialization.h
before parsing commandline arguments.

I have tested this with all standard configurations of clang and llvm-gcc on Darwin.  It is possible that there are problems
with the static dependencies that will only be visible with non-standard options.  If you encounter any crash in pass
registration/creation, please send the testcase to me directly.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116820 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-19 17:21:58 +00:00
Daniel Dunbar
9869413802 Revert r116781 "- Add a hook for target to determine whether an instruction def
is", which breaks some nightly tests.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116816 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-19 17:14:24 +00:00
Dan Gohman
f3a925dc7a Consistently use AliasAnalysis::UnknownSize instead of hardcoding ~0u.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116815 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-19 17:06:23 +00:00
Mikhail Glushenkov
99fca5de96 GlobalOpt: EvaluateFunction() must not evaluate stores to weak_odr globals.
Fixes PR8389.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116812 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-19 16:47:23 +00:00
Che-Liang Chiou
b48f2c2e1d Add lower argument and return of device function
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116805 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-19 13:14:40 +00:00
Bill Wendling
cf2561d111 Fix spelling.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116804 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-19 10:18:23 +00:00
Michael J. Spencer
94f7eeb84d X86: Add MS-CRT libcalls.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116801 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-19 07:32:52 +00:00
Michael J. Spencer
87b8665878 Fix Whitespace.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116800 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-19 07:32:42 +00:00
NAKAMURA Takumi
3b3b0ebd2e lib/CodeGen/TargetLoweringObjectFileImpl.cpp: Tweak to emit ".{section}${name}" instead of ".{section}$linkonce_{name}" for linkonce sections.
It seems GNU ld/PECOFF relies on section names, linking with g++'s libstdc++.a would fail.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116791 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-19 03:24:42 +00:00
Andrew Trick
dc986d2462 Fix for machine licm assert: RCCost <= RegPressure[RCId]
in MultiSource/Benchmarks/VersaBench/beamformer/beamformer.
SmallSet.insert returns true if the element is inserted.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116790 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-19 02:50:50 +00:00
Rafael Espindola
19785995f6 Fix PR8300 by remembering to keep the bitcast in all cases.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116788 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-19 02:02:57 +00:00
NAKAMURA Takumi
5c0db76cf2 lib/System/Win32/ThreadLocal.inc: Suppress "unused" warning on -Asserts.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116785 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-19 01:22:01 +00:00
NAKAMURA Takumi
1b5de0e7ee lib/Support/raw_ostream.cpp: Fix Cygwin's build.
setmode is provided by io.h on Cygwin.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116784 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-19 01:21:55 +00:00