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* Speculatively revert commit 127478 (jsjodin) in an attempt to fix theDuncan Sands2011-03-12
| | | | | | | | | | | llvm-gcc-i386-linux-selfhost and llvm-x86_64-linux-checks buildbots. The original log entry: 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@127540 91177308-0d34-0410-b5e6-96231b3b80d8
* This patch removes some of useless instructions generated by bitfield access.Jin-Gu Kang2011-03-12
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127539 91177308-0d34-0410-b5e6-96231b3b80d8
* Include snippets in the live stack interval.Jakob Stoklund Olesen2011-03-12
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127530 91177308-0d34-0410-b5e6-96231b3b80d8
* Spill multiple registers at once.Jakob Stoklund Olesen2011-03-12
| | | | | | | | | | | Live range splitting can create a number of small live ranges containing only a single real use. Spill these small live ranges along with the large range they are connected to with copies. This enables memory operand folding and maximizes the spill to fill distance. Work in progress with known bugs. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127529 91177308-0d34-0410-b5e6-96231b3b80d8
* Fixed the comparison operator for the enhancedSean Callanan2011-03-12
| | | | | | | disassembler's disassembler map. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127527 91177308-0d34-0410-b5e6-96231b3b80d8
* That's it, I am declaring this a failure of the C++03 STL.Jakob Stoklund Olesen2011-03-12
| | | | | | | | | | | | | | There are too many compatibility problems with using mixed types in std::upper_bound, and I don't want to spend 110 lines of boilerplate setting up a call to a 10-line function. Binary search is not /that/ hard to implement correctly. I tried terminating the binary search with a linear search, but that actually made the algorithm slower against my expectation. Most live intervals have less than 4 segments. The early test against endIndex() does pay, and this version is 25% faster than plain std::upper_bound(). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127522 91177308-0d34-0410-b5e6-96231b3b80d8
* Sometimes isPredicable lies to us and tells us we don't need the operands.Eric Christopher2011-03-12
| | | | | | | | | | Go ahead and add them on when we might want to use them and let later passes remove them. Fixes rdar://9118569 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127518 91177308-0d34-0410-b5e6-96231b3b80d8
* Add FIXME.Jim Grosbach2011-03-12
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127516 91177308-0d34-0410-b5e6-96231b3b80d8
* Pseudo-ize the ARM Darwin *r9 call instruction definitions. They're the sameJim Grosbach2011-03-12
| | | | | | | | actual instruction as the non-Darwin defs, but have different call-clobber semantics and so need separate patterns. They don't need to duplicate the encoding information, however. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127515 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a FIXME.Jim Grosbach2011-03-11
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127511 91177308-0d34-0410-b5e6-96231b3b80d8
* Pseudo-ize the ARM 'B' instruction.Jim Grosbach2011-03-11
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127510 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove dead code. These ARM instruction definitions no longer exist.Jim Grosbach2011-03-11
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127509 91177308-0d34-0410-b5e6-96231b3b80d8
* Pseudo-ize VMOVDcc and VMOVScc.Jim Grosbach2011-03-11
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127506 91177308-0d34-0410-b5e6-96231b3b80d8
* 80 columnsJim Grosbach2011-03-11
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127505 91177308-0d34-0410-b5e6-96231b3b80d8
* Properly pseudo-ize the ARM LDMIA_RET instruction. This has the nice side-Jim Grosbach2011-03-11
| | | | | | | | effect that we get proper instruction printing using the "pop" mnemonic for it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127502 91177308-0d34-0410-b5e6-96231b3b80d8
* Roll r127459 back in:Cameron Zwarich2011-03-11
| | | | | | | | | | | 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
* Fix the GCC test suite issue exposed by r127477, which was caused by stackCameron Zwarich2011-03-11
| | | | | | | 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
* Teach FastISel to support register-immediate-immediate instructions.Owen Anderson2011-03-11
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127496 91177308-0d34-0410-b5e6-96231b3b80d8
* ARM VDUPfd and VDUPfq can just be patterns. The instruction is the sameJim Grosbach2011-03-11
| | | | | | as for VDUP32d and VDUP32q, respectively. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127489 91177308-0d34-0410-b5e6-96231b3b80d8
* ARM VDUPLNfq and VDUPLNfd definitions can just be Pat<>s for VDUPLN32qJim Grosbach2011-03-11
| | | | | | and VDUPLN32d, respectively. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127486 91177308-0d34-0410-b5e6-96231b3b80d8
* ARM VREV64df and VREV64qf can just be patterns. The instruction is the sameJim Grosbach2011-03-11
| | | | | | as for VREV64d32 and VREV64q32, respectively. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127485 91177308-0d34-0410-b5e6-96231b3b80d8
* This FIXME has been fixed.Jim Grosbach2011-03-11
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127483 91177308-0d34-0410-b5e6-96231b3b80d8
* Properly pseudo-ize ARM MVNCCi.Jim Grosbach2011-03-11
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127482 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove optimization emitting a reference insted of label difference, since ↵Jan Sjödin2011-03-11
| | | | | | 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
* Revert r127459, "Optimize trivial branches in CodeGenPrepare, which often getDaniel Dunbar2011-03-11
| | | | | | 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
* Fix MOVCCi32imm to be have ARM-mode Requires and a proper size (8 bytes, was 4).Jim Grosbach2011-03-11
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127469 91177308-0d34-0410-b5e6-96231b3b80d8
* Replace -dag-chain-limit flag with constant. It has survived a release cycle ↵Andrew Trick2011-03-11
| | | | | | 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
* ComputeMaskedBits: sub falls through to add, and sub doesn't have the same ↵Benjamin Kramer2011-03-11
| | | | | | | | 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
* InstCombine: Fix a thinko where transform an icmp under the assumption that ↵Benjamin Kramer2011-03-11
| | | | | | | | 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
* Teach ComputeMaskedBits about nsw on add. I don't think there's anything we canNick Lewycky2011-03-11
| | | | | | | | 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
* Fix use of CompEnd predicate to be standards conformingJohn Wiegley2011-03-11
| | | | | | | | | | | | | 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
* Optimize trivial branches in CodeGenPrepare, which often get created from theCameron Zwarich2011-03-11
| | | | | | | | | | 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
* silence a conditional assignment -Wuninitialized warning.Chris Lattner2011-03-11
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127453 91177308-0d34-0410-b5e6-96231b3b80d8
* Properly pseudo-ize ARM MOVCCi and MOVCCi16.Jim Grosbach2011-03-11
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127442 91177308-0d34-0410-b5e6-96231b3b80d8
* Change the x86 32-bit scheduler to register pressure and fix up theEric Christopher2011-03-11
| | | | | | | | | 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
* Avoid replacing the value of a directly stored load with the stored value if ↵Evan Cheng2011-03-11
| | | | | | the load is indexed. rdar://9117613. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127440 91177308-0d34-0410-b5e6-96231b3b80d8
* Properly pseudo-ize MOVCCr and MOVCCs.Jim Grosbach2011-03-10
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127434 91177308-0d34-0410-b5e6-96231b3b80d8
* RecursivelyDeleteTriviallyDeadInstructions only needs aDan Gohman2011-03-10
| | | | | | | | | 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
* Don't compute the file size if we don't need to.Rafael Espindola2011-03-10
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127426 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix reassociate to postpone certain instruction deletions untilDan Gohman2011-03-10
| | | | | | | | | | | 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
* DMB can just be a pat referencing MCR.Jim Grosbach2011-03-10
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127423 91177308-0d34-0410-b5e6-96231b3b80d8
* Reorganize a bit. No functional change, just moving patterns up.Jim Grosbach2011-03-10
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127422 91177308-0d34-0410-b5e6-96231b3b80d8
* Pseudo-instructions are codegenonly by definition.Jim Grosbach2011-03-10
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127420 91177308-0d34-0410-b5e6-96231b3b80d8
* InstCombine: Turn umul_with_overflow into mul nuw if we can prove that it ↵Benjamin Kramer2011-03-10
| | | | | | | | | | 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
* Add r127409 back now that the windows file was updated.Rafael Espindola2011-03-10
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127417 91177308-0d34-0410-b5e6-96231b3b80d8
* Try to fix the windows build.Rafael Espindola2011-03-10
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127416 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert r127409 which broke all the Windows bots.Jakob Stoklund Olesen2011-03-10
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127413 91177308-0d34-0410-b5e6-96231b3b80d8
* PTX: Add preliminary support for floating-point divide and multiply-and-addJustin Holewinski2011-03-10
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127410 91177308-0d34-0410-b5e6-96231b3b80d8
* Add support for MemoryBuffers that are not null terminated and addRafael Espindola2011-03-10
| | | | | | 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
* Add an option to disable critical edge splitting in PHIElimination.Cameron Zwarich2011-03-10
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127398 91177308-0d34-0410-b5e6-96231b3b80d8
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