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Author SHA1 Message Date
Cameron Zwarich
899eaa3569 Roll r127459 back in: 
Optimize trivial branches in CodeGenPrepare, which often get created from the
lowering of objectsize intrinsics. Unfortunately, a number of tests were relying
on llc not optimizing trivial branches, so I had to add an option to allow them
to continue to test what they originally tested.

This fixes <rdar://problem/8785296> and <rdar://problem/9112893>.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127498 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-11 21:52:04 +00:00
Cameron Zwarich
53aac15a60 Fix the GCC test suite issue exposed by r127477, which was caused by stack 
protector insertion not working correctly with unreachable code. Since that
revision was rolled out, this test doesn't actual fail before this fix.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127497 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-11 21:51:56 +00:00
Owen Anderson
2ce5bf188d Teach FastISel to support register-immediate-immediate instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127496 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-11 21:33:55 +00:00
Jim Grosbach
2a09f878ef 80 columns. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127495 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-11 21:02:27 +00:00
Jim Grosbach
108e4dbecb Trailing whitespace. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127493 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-11 20:59:19 +00:00
Jim Grosbach
b9cf5f8763 Remove dead code. These ARM instruction definitions don't exist. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127491 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-11 20:51:07 +00:00
Jim Grosbach
958108ad14 ARM VDUPfd and VDUPfq can just be patterns. The instruction is the same 
as for VDUP32d and VDUP32q, respectively.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127489 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-11 20:44:08 +00:00
Jim Grosbach
81bb6551e6 Remove dead code. These ARM instruction definitions don't exist. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127488 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-11 20:38:18 +00:00
Jim Grosbach
8b8515c225 ARM VDUPLNfq and VDUPLNfd definitions can just be Pat<>s for VDUPLN32q 
and VDUPLN32d, respectively.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127486 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-11 20:31:17 +00:00
Jim Grosbach
1558df79b4 ARM VREV64df and VREV64qf can just be patterns. The instruction is the same 
as for VREV64d32 and VREV64q32, respectively.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127485 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-11 20:18:05 +00:00
Jim Grosbach
f0112a224f This FIXME has been fixed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127483 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-11 20:07:37 +00:00
Jim Grosbach
e672ff8430 Properly pseudo-ize ARM MVNCCi. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127482 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-11 19:55:55 +00:00
Jim Grosbach
6a44adade2 Add missing 'return on failure'. Previously we'd crash after emitting 
the diagnostic.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127480 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-11 19:52:52 +00:00
Jan Sjödin
e4f6d7461a Remove optimization emitting a reference insted of label difference, since it can create more relocations. Removed isBaseAddressKnownZero method, because it is no longer used. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127478 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-11 19:37:02 +00:00
Daniel Dunbar
950d3db5f4 Revert r127459, "Optimize trivial branches in CodeGenPrepare, which often get 
created from the", it broke some GCC test suite tests.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127477 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-11 19:30:30 +00:00
Oscar Fuentes
4839ded3bd Force re-linking of LLVMgold.so when its exports file changes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127473 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-11 18:27:13 +00:00
Oscar Fuentes
aa1fbb40ad Fix processing of gold.exports. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127471 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-11 18:07:46 +00:00
Devang Patel
027f0995d4 While printing annotations, print line number and variable name if debug info is present. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127470 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-11 18:07:33 +00:00
Jim Grosbach
eb582d7ba2 Fix MOVCCi32imm to be have ARM-mode Requires and a proper size (8 bytes, was 4). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127469 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-11 18:00:42 +00:00
Andrew Trick
778583ad28 Replace -dag-chain-limit flag with constant. It has survived a release cycle without being touched, so no longer needs to pollute the hidden-help text. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127468 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-11 17:46:59 +00:00
Oscar Fuentes
1dc550b383 Add LTO and gold plugin to the CMake build. Linux-only, support for 
other systems pending.

PR9456.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127466 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-11 15:44:24 +00:00
Benjamin Kramer
2715a58149 ComputeMaskedBits: sub falls through to add, and sub doesn't have the same overflow semantics as add. 
Should fix the selfhost failures that started with r127463.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127465 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-11 14:46:49 +00:00
Benjamin Kramer
6b4972518c InstCombine: Fix a thinko where transform an icmp under the assumption that it's a zero comparison when it's not. 
Fixes PR9454.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127464 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-11 11:37:40 +00:00
Nick Lewycky
b69050a94c Teach ComputeMaskedBits about nsw on add. I don't think there's anything we can 
do with nuw here, but sub and mul should be given similar treatment.
Fixes PR9343 #15!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127463 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-11 09:00:19 +00:00
John Wiegley
6fd2472b1b Fix use of CompEnd predicate to be standards conforming 
The existing CompEnd predicate does not define a strict weak order as required
by the C++03 standard; therefore, its use as a predicate to std::upper_bound
is invalid. For a discussion of this issue, see
http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#270

This patch replaces the asymmetrical comparison with an iterator adaptor that
achieves the same effect while being strictly standard-conforming by ensuring
an apples-to-apples comparison.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127462 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-11 08:54:34 +00:00
Cameron Zwarich
592ca3fda9 Optimize trivial branches in CodeGenPrepare, which often get created from the 
lowering of objectsize intrinsics. Unfortunately, a number of tests were relying
on llc not optimizing trivial branches, so I had to add an option to allow them
to continue to test what they originally tested.

This fixes <rdar://problem/8785296> and <rdar://problem/9112893>.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127459 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-11 04:54:27 +00:00
Jim Grosbach
4a6d735105 Teach TableGen to pre-calculate register enum values when creating the 
CodeGenRegister entries. Use this information to more intelligently build
the literal register entires in the DAGISel matcher table. Specifically,
use a single-byte OPC_EmitRegister entry for registers with a value of
less than 256 and OPC_EmitRegister2 entry for registers with a larger value.

rdar://9066491



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127456 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-11 02:19:02 +00:00
Chris Lattner
109d6dbe50 silence a conditional assignment -Wuninitialized warning. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127453 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-11 02:12:51 +00:00
Jim Grosbach
17fad045cc Make the register enum value part of the CodeGenRegister struct. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127448 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-11 01:33:54 +00:00
Jim Grosbach
510207cb1e Trailing whitespace. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127447 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-11 01:27:24 +00:00
Jim Grosbach
5d4314ef72 Trailing whitespace. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127446 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-11 01:19:05 +00:00
Jim Grosbach
7e0e82dcd5 Tidy up since ARM MOVCCi and MOVCCi16 are now pseudos. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127445 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-11 01:16:49 +00:00
Jim Grosbach
3906276a8d Properly pseudo-ize ARM MOVCCi and MOVCCi16. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127442 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-11 01:09:28 +00:00
Eric Christopher
de5e101b0d Change the x86 32-bit scheduler to register pressure and fix up the 
corresponding testcases back to the previous versions.

Fixes some performance regressions only seen on 32-bit.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127441 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-11 01:05:58 +00:00
Evan Cheng
9ef82ce4fe Avoid replacing the value of a directly stored load with the stored value if the load is indexed. rdar://9117613. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127440 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-11 00:48:56 +00:00
Jim Grosbach
d4a16ad85d Properly pseudo-ize MOVCCr and MOVCCs. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127434 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-10 23:56:09 +00:00
Dan Gohman
c9f2f61d34 RecursivelyDeleteTriviallyDeadInstructions only needs a 
Value, not an Instruction, so casting is not necessary. Also,
it's theoretically possible that the Value is not an
Instruction, since WeakVH follows RAUWs.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127427 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-10 20:57:44 +00:00
Rafael Espindola
9d2234d6a0 Don't compute the file size if we don't need to. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127426 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-10 20:54:07 +00:00
Dan Gohman
fa0e6facc7 Fix reassociate to postpone certain instruction deletions until 
after it has finished all of its reassociations, because its
habit of unlinking operands and holding them in a datastructure
while working means that it's not easy to determine when an
instruction is really dead until after all its regular work is
done. rdar://9096268.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127424 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-10 19:51:54 +00:00
Jim Grosbach
a4f809d8db DMB can just be a pat referencing MCR. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127423 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-10 19:27:17 +00:00
Jim Grosbach
bc908cfcc1 Reorganize a bit. No functional change, just moving patterns up. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127422 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-10 19:21:08 +00:00
Jim Grosbach
a768c3d45f Pseudo-instructions are codegenonly by definition. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127420 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-10 19:06:39 +00:00
Jim Grosbach
5e97338c8d Memory barrier instructions don't need special handling in tblgen anymore. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127419 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-10 19:05:48 +00:00
Benjamin Kramer
6b96fe7e14 InstCombine: Turn umul_with_overflow into mul nuw if we can prove that it cannot overflow. 
This happens a lot in clang-compiled C++ code because it adds overflow checks to operator new[]:
  unsigned *foo(unsigned n) { return new unsigned[n]; }
We can optimize away the overflow check on 64 bit targets because (uint64_t)n*4 cannot overflow.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127418 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-10 18:40:14 +00:00
Rafael Espindola
f7fdad15d9 Add r127409 back now that the windows file was updated. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127417 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-10 18:33:29 +00:00
Rafael Espindola
b78e2ae4ca Try to fix the windows build. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127416 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-10 18:30:48 +00:00
Jakob Stoklund Olesen
4b0e1f1278 Revert r127409 which broke all the Windows bots. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127413 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-10 18:01:43 +00:00
Justin Holewinski
fca9efcbc4 PTX: Add preliminary support for floating-point divide and multiply-and-add 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127410 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-10 16:57:18 +00:00
Rafael Espindola
7deb187736 Add support for MemoryBuffers that are not null terminated and add 
support for creating buffers that cover only a part of a file.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127409 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-10 16:10:30 +00:00
Chris Lattner
be2e1b50c4 rip out llvm 2.8 release notes to make room for llvm 2.9 notes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127399 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-10 07:43:44 +00:00