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2011-04-16Fix bug when checking phi operands in InstCombiner::visitPHINode(),Jay Foad
found by code inspection. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129641 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-16Fix cmake build.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129632 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-16Move the re-stemming function up top and use it where it's currently inlined.Nick Lewycky
Break the arc-profile code out to a function like the notes emission code is, and reorder the functions in the file. The only functionality change is that we no longer modify the Module when the Module has no debug info to use. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129631 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-16Rename LineProfiling to GCOVProfiling to more accurately represent what itNick Lewycky
does. Also mostly implement it. Still a work-in-progress, but generates legal output on crafted test cases. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129630 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-15Fix a ton of comment typos found by codespell. Patch byChris Lattner
Luis Felipe Strano Moraes! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129558 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-14Add an instcombine for constructs like a | -(b != c); a select is moreEli Friedman
canonical, and generally leads to better code. Found while looking at an article about saturating arithmetic. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129545 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-14Fix an infinite alternation in JumpThreading where two transforms would ↵Owen Anderson
repeatedly undo each other. The solution is to perform more aggressive constant folding to make one of the edges just folded away rather than trying to thread it. Fixes <rdar://problem/9284786>. Discovered with CSmith. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129538 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-14Cleanup r129509 based on comments by ChrisMon P Wang
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129532 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-14Cleanup r129472 by using a utility routine as suggested by Eli.Mon P Wang
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129509 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-14rework FoldBranchToCommonDest to exit earlier when there is a bonusChris Lattner
instruction around, reducing work. Greatly simplify handling of debug instructions. There is no need to build up a vector of them and then move them into the one predecessor if we're processing a block. Instead just rescan the block and *copy* them into the pred. If a block gets merged into multiple preds, this will retain more debug info. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129502 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-14fix a couple -Wsign-compare warnings.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129501 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-13Vectors with different number of elements of the same element type can haveMon P Wang
the same allocation size but different primitive sizes(e.g., <3xi32> and <4xi32>). When ScalarRepl promotes them, it can't use a bit cast but should use a shuffle vector instead. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129472 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-13Fixed the revision 129449.Junjie Gu
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129450 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-13Passing unroll parameters (unroll-count, threshold, and partial unroll) via ↵Junjie Gu
LoopUnroll class's ctor. Doing so will allow multiple context with different loop unroll parameters to run. This is a minor change and no effect on existing application. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129449 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-13Add the alias analysis to the C api.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129447 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-13Reapply r129401 with patch for clang.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129419 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-12Revert r129401 for now. Clang is using the old way of doing things.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129403 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-12Remove the unaligned load intrinsics in favor of using native unaligned loads.Bill Wendling
Now that we have a first-class way to represent unaligned loads, the unaligned load intrinsics are superfluous. First part of <rdar://problem/8460511>. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129401 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-12lib/Transforms/Instrumentation/CMakeLists.txt: Add LineProfiling.cpp to fix ↵NAKAMURA Takumi
up r129340. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129343 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-12Add support for line profiling. Very work-in-progress.Nick Lewycky
Use debug info in the IR to find the directory/file:line:col. Each time that location changes, bump a counter. Unlike the existing profiling system, we don't try to look at argv[], and thusly don't require main() to be present in the IR. This matches GCC's technique where you specify the profiling flag when producing each .o file. The runtime library is minimal, currently just calling printf at program shutdown time. The API is designed to make it possible to emit GCOV data later on. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129340 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-12Consider ConstantAggregateZero as well as ConstantArray/Struct.Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129338 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-12Fix reassociate to use a worklist instead of recursing when newDan Gohman
reassociation opportunities are exposed. This fixes a bug where the nested reassociation expects to be the IR to be consistent, but it isn't, because the outer reassociation has disconnected some of the operands. rdar://9167457 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129324 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-11comment cleanup, use moveBefore instead of removeFromParent+insertBefore.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129319 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-11remove the StructRetPromotion pass. It is unused, not maintained andChris Lattner
has some bugs. If this is interesting functionality, it should be reimplemented in the argpromotion pass. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129314 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-11Just because a GlobalVariable's initializer is [N x { i32, void ()* }] doesn'tNick Lewycky
mean that it has to be ConstantArray of ConstantStruct. We might have ConstantAggregateZero, at either level, so don't crash on that. Also, semi-deprecate the sentinal value. The linker isn't aware of sentinals so we end up with the two lists appended, each with their "sentinals" on them. Different parts of LLVM treated sentinals differently, so make them all just ignore the single entry and continue on with the rest of the list. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129307 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-11Don't include Operator.h from InstrTypes.h.Jay Foad
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129271 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-09Add back a couple checks removed by r129128; the fact that an intitializerEli Friedman
is an array of structures doesn't imply it's a ConstantArray of ConstantStruct. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129207 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-09fix PR9523, a crash in looprotate on a non-canonical loop made out of ↵Chris Lattner
indirectbr. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129203 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-09Fix a bug where RecursivelyDeleteTriviallyDeadInstructions couldChris Lattner
delete the instruction pointed to by CGP's current instruction iterator, leading to a crash on the testcase. This fixes PR9578. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129200 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-08Add a function for profiling to run at shutdown. Unlike the existing API, thisNick Lewycky
can be used even when main() isn't present in the Module, but it means that you don't get to read argv[]. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129163 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-08llvm.global_[cd]tor is defined to be either external, or appending with an arrayNick Lewycky
of { i32, void ()* }. Teach the verifier to verify that, deleting copies of checks strewn about. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129128 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-07Do not let debug info interfer with branch folding.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129114 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-07Expose more passes to the C API.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129087 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-07While hoisting common code from if/else, hoist debug info intrinsics if they ↵Devang Patel
match. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129078 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-07PR9634: Don't unconditionally tell the AliasSetTracker that the PreheaderLoadEli Friedman
is equivalent to any other relevant value; it isn't true in general. If it is equivalent, the LoopPromoter will tell the AST the equivalence. Also, delete the PreheaderLoad if it is unused. Chris, since you were the last one to make major changes here, can you check that this is sane? git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129049 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-07Simplify. isIdenticalToWhenDefined() checks opcode.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129041 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-06While folding branch to a common destination into a predecessor, copy dbg ↵Devang Patel
values also. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129035 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-05Fix typos. Adjust some whitespace for style. No functionality change.Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128924 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-05InstCombine optimizes gep(bitcast(x)) even when the bitcasts casts away addressNadav Rotem
space info. We crash with an assert in this case. This change checks that the address space of the bitcasted pointer is the same as the gep ptr. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128884 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-04Remove some support for ReturnInsts with multiple operands, and forJay Foad
returning a scalar value in a function whose return type is a single- element structure or array. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128810 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-04Attempt to fix breakage from r128782 reported by Francois Pichet onEli Friedman
llvm-commits. (Not sure why it only breaks on Windows; maybe it has something to do with the iterator representation...) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128802 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-02PR9446: RecursivelyDeleteTriviallyDeadInstructions can delete the instructionEli Friedman
after the given instruction; make sure to handle that case correctly. (It's difficult to trigger; the included testcase involves a dead block, but I don't think that's a requirement.) While I'm here, get rid of the unnecessary warning about SimplifyInstructionsInBlock, since it should work correctly as far as I know. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128782 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-02While SimplifyDemandedBits constant folds this, we can't rely on it here.Benjamin Kramer
It's possible to craft an input that hits the recursion limits in a way that SimplifyDemandedBits doesn't simplify the icmp but ComputeMaskedBits can infer which bits are zero. No test case as it depends on too many other things. Fixes PR9609. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128777 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-01Fix comment.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128745 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-01Tweaks to the icmp+sext-to-shifts optimization to address Frits' comments:Benjamin Kramer
- Localize the check if an icmp has one use to a place where we know we're introducing something that's likely more expensive than a sext from i1. - Add an assert to make sure a case that would lead to a miscompilation is folded away earlier. - Fix a typo. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128744 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-01Fix build.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128733 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-01InstCombine: Turn icmp + sext into bitwise/integer ops when the input has ↵Benjamin Kramer
only one unknown bit. int test1(unsigned x) { return (x&8) ? 0 : -1; } int test3(unsigned x) { return (x&8) ? -1 : 0; } before (x86_64): _test1: andl $8, %edi cmpl $1, %edi sbbl %eax, %eax ret _test3: andl $8, %edi cmpl $1, %edi sbbl %eax, %eax notl %eax ret after: _test1: shrl $3, %edi andl $1, %edi leal -1(%rdi), %eax ret _test3: shll $28, %edi movl %edi, %eax sarl $31, %eax ret git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128732 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-01InstCombine: Move (sext icmp) transforms into their own method. No intended ↵Benjamin Kramer
functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128731 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-31Instcombile optimization: extractelement(cast) -> cast(extractelement)Nadav Rotem
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128683 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-31InstCombine: APFloat can't perform arithmetic on PPC double doubles, don't ↵Benjamin Kramer
even try. Thanks Eli! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128676 91177308-0d34-0410-b5e6-96231b3b80d8
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