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* Add missing 'return on failure'. Previously we'd crash after emittingJim Grosbach2011-03-111-0/+1
| | | | | | the diagnostic. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127480 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove optimization emitting a reference insted of label difference, since ↵Jan Sjödin2011-03-113-21/+0
| | | | | | 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 Dunbar2011-03-1116-31/+17
| | | | | | 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
* Force re-linking of LLVMgold.so when its exports file changes.Oscar Fuentes2011-03-111-0/+6
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127473 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix processing of gold.exports.Oscar Fuentes2011-03-111-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127471 91177308-0d34-0410-b5e6-96231b3b80d8
* While printing annotations, print line number and variable name if debug ↵Devang Patel2011-03-112-5/+50
| | | | | | info is present. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127470 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix MOVCCi32imm to be have ARM-mode Requires and a proper size (8 bytes, was 4).Jim Grosbach2011-03-111-3/+3
| | | | 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 Trick2011-03-111-3/+1
| | | | | | 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
* Add LTO and gold plugin to the CMake build. Linux-only, support forOscar Fuentes2011-03-113-0/+58
| | | | | | | | other systems pending. PR9456. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127466 91177308-0d34-0410-b5e6-96231b3b80d8
* ComputeMaskedBits: sub falls through to add, and sub doesn't have the same ↵Benjamin Kramer2011-03-112-1/+12
| | | | | | | | 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 Kramer2011-03-112-3/+12
| | | | | | | | 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 Lewycky2011-03-112-0/+24
| | | | | | | | 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 Wiegley2011-03-111-9/+111
| | | | | | | | | | | | | 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 Zwarich2011-03-1116-17/+31
| | | | | | | | | | 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
* Teach TableGen to pre-calculate register enum values when creating theJim Grosbach2011-03-114-33/+36
| | | | | | | | | | | | | 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
* silence a conditional assignment -Wuninitialized warning.Chris Lattner2011-03-111-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127453 91177308-0d34-0410-b5e6-96231b3b80d8
* Make the register enum value part of the CodeGenRegister struct.Jim Grosbach2011-03-113-1/+8
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127448 91177308-0d34-0410-b5e6-96231b3b80d8
* Trailing whitespace.Jim Grosbach2011-03-112-33/+33
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127447 91177308-0d34-0410-b5e6-96231b3b80d8
* Trailing whitespace.Jim Grosbach2011-03-112-49/+49
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127446 91177308-0d34-0410-b5e6-96231b3b80d8
* Tidy up since ARM MOVCCi and MOVCCi16 are now pseudos.Jim Grosbach2011-03-111-6/+6
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127445 91177308-0d34-0410-b5e6-96231b3b80d8
* Properly pseudo-ize ARM MOVCCi and MOVCCi16.Jim Grosbach2011-03-112-26/+30
| | | | 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 Christopher2011-03-116-6/+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 Cheng2011-03-112-2/+48
| | | | | | 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 Grosbach2011-03-104-32/+41
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127434 91177308-0d34-0410-b5e6-96231b3b80d8
* RecursivelyDeleteTriviallyDeadInstructions only needs aDan Gohman2011-03-101-3/+2
| | | | | | | | | 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 Espindola2011-03-101-14/+29
| | | | 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 Gohman2011-03-102-3/+36
| | | | | | | | | | | 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 Grosbach2011-03-101-7/+6
| | | | 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 Grosbach2011-03-101-232/+233
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127422 91177308-0d34-0410-b5e6-96231b3b80d8
* Pseudo-instructions are codegenonly by definition.Jim Grosbach2011-03-101-0/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127420 91177308-0d34-0410-b5e6-96231b3b80d8
* Memory barrier instructions don't need special handling in tblgen anymore.Jim Grosbach2011-03-101-3/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127419 91177308-0d34-0410-b5e6-96231b3b80d8
* InstCombine: Turn umul_with_overflow into mul nuw if we can prove that it ↵Benjamin Kramer2011-03-102-1/+56
| | | | | | | | | | 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 Espindola2011-03-104-32/+86
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127417 91177308-0d34-0410-b5e6-96231b3b80d8
* Try to fix the windows build.Rafael Espindola2011-03-101-2/+2
| | | | 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 Olesen2011-03-104-86/+32
| | | | 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 Holewinski2011-03-105-5/+151
| | | | 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 Espindola2011-03-104-32/+86
| | | | | | 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
* rip out llvm 2.8 release notes to make room for llvm 2.9 notes.Chris Lattner2011-03-101-666/+50
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127399 91177308-0d34-0410-b5e6-96231b3b80d8
* Add an option to disable critical edge splitting in PHIElimination.Cameron Zwarich2011-03-101-4/+12
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127398 91177308-0d34-0410-b5e6-96231b3b80d8
* ptx: add the rest of special registers of ISA version 2.0Che-Liang Chiou2011-03-103-56/+257
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127397 91177308-0d34-0410-b5e6-96231b3b80d8
* Change the Spiller interface to take a LiveRangeEdit reference.Jakob Stoklund Olesen2011-03-107-50/+34
| | | | | | | This makes it possible to register delegates and get callbacks when the spiller edits live ranges. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127389 91177308-0d34-0410-b5e6-96231b3b80d8
* Make SpillIs an optional pointer. Avoid creating a bunch of temporary ↵Jakob Stoklund Olesen2011-03-1010-30/+25
| | | | | | SmallVectors. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127388 91177308-0d34-0410-b5e6-96231b3b80d8
* Unbreak the CMake build.Francois Pichet2011-03-101-0/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127383 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert 127359; it broke lencod.Stuart Hastings2011-03-108-22/+14
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127382 91177308-0d34-0410-b5e6-96231b3b80d8
* Introduce DebugInfoProbe. This is used to monitor how llvm optimizer is ↵Devang Patel2011-03-104-3/+347
| | | | | | | | | | | | | | treating debugging information. It generates output that lools like 8 times line number info lost by Scalar Replacement of Aggregates (SSAUp) 1 times line number info lost by Simplify well-known library calls 12 times variable info lost by Jump Threading git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127381 91177308-0d34-0410-b5e6-96231b3b80d8
* Re-commit 127368 and 127371. They are exonerated.Evan Cheng2011-03-104-14/+29
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127380 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert 127368 and 127371 for now.Evan Cheng2011-03-094-29/+14
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127376 91177308-0d34-0410-b5e6-96231b3b80d8
* Restore the default implementation of getCrossCopyRegClass: no need for ↵Evan Cheng2011-03-091-1/+1
| | | | | | cross-regclass copies. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127371 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert "Re-enable test and hope to silence the buildbots", still broken.Daniel Dunbar2011-03-091-0/+3
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127369 91177308-0d34-0410-b5e6-96231b3b80d8
* Change the definition of TargetRegisterInfo::getCrossCopyRegClass to be moreEvan Cheng2011-03-094-13/+28
| | | | | | | | | | | | | | flexible. If it returns a register class that's different from the input, then that's the register class used for cross-register class copies. If it returns a register class that's the same as the input, then no cross- register class copies are needed (normal copies would do). If it returns null, then it's not at all possible to copy registers of the specified register class. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127368 91177308-0d34-0410-b5e6-96231b3b80d8
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