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2010-08-13Fix LSR's ExtractImmediate and ExtractSymbol to avoid callingDan Gohman
ScalarEvolution::getAddExpr, which can be pretty expensive, when nothing has changed, which is pretty common. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111042 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-13Reapply this transformation now that it is passing the external test which ↵Nate Begeman
it previously failed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110987 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-12fix PR7876: If ipsccp decides that a function's address is takenChris Lattner
before it rewrites the code, we need to use that in the post-rewrite pass. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110962 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-12Temporarily revert 110737 and 110734, they were causing failuresEric Christopher
in an external testsuite. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110905 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-10Add the minimal amount of smarts necessary to instcombine of shufflevectors ↵Nate Begeman
to recognize patterns generated by clang for transpose of a matrix in generic vectors. This is made of two parts: 1) Propagating vector extracts of hi/lo half into their users 2) Recognizing an insertion of even elements followed by the odd elements as an unpack. Testcase to come, but this shrinks the # of shuffle instructions generated on x86 from ~40 to the minimal 8. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110734 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-09Fix a use after free error caught by the valgrind builders.Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110601 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-09PR7853: fix a silly mistake introduced in r101899, and add a test to make sureEli Friedman
it doesn't regress again. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110597 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-08Do more to modernize MergeFunctions. Refactor in response to Chris' code review.Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110538 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-07Don't attempt the PRE inline asm calls, since we don't value number them ↵Owen Anderson
yet. Fixes PR7835. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110489 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-06Eliminate PromoteMemoryToRegisterID; just use addPreserved("mem2reg")Dan Gohman
instead, as an example of what this looks like. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110478 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-06Reapply r110396, with fixes to appease the Linux buildbot gods.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110460 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-06Fix uninitialized variable warning.Nick Lewycky
Also move 'default' case next to a real case to help compiler optimize in non-Debug builds. No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110435 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-06Work in progress, cleaning up MergeFuncs.Nick Lewycky
Further clean up the comparison function by removing overly generalized "domains". Remove all understanding of ELF aliases and simplify folding code and comments. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110434 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-06Revert r110396 to fix buildbots.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110410 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-05Don't use PassInfo* as a type identifier for passes. Instead, use the ↵Owen Anderson
address of the static ID member as the sole unique type identifier. Clean up APIs related to this change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110396 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-05Give JumpThreading+LVI a long-form cl::opt so that it's easier to toggle the ↵Owen Anderson
default. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110384 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-04Experiments show that we can safely increase our unrolling threshold without ↵Owen Anderson
unduly impacting code size, particularly since unrolling is not enabled at -Os. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110233 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-04Fix whitespace.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110223 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-04Fix a comment.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110181 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-03Thread const correctness through a bunch of AliasAnalysis interfaces andDan Gohman
eliminate several const_casts. Make CallSite implicitly convertible to ImmutableCallSite. Rename the getModRefBehavior for intrinsic IDs to getIntrinsicModRefBehavior to avoid overload ambiguity with CallSite, which happens to be implicitly convertible to bool. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110155 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-03Make instcombine set explicit alignments on load or storeDan Gohman
instructions with alignment 0, so that subsequent passes don't need to bother checking the TargetData ABI size manually. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110128 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-03Add an atomic lowering passPeter Collingbourne
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110113 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-03Use unary + instead of a separate local variable for workingDan Gohman
around std::min vs static const friction. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110112 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-02Re-apply the infamous r108614, with a fix pointed out by Dirk Steinke.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110036 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-02Prefix `next' iterator operation with `llvm::'.Oscar Fuentes
Fixes potential ambiguity problems on VS 2010. Patch by nobled! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110029 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-02Fix a -Wreorder warning.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110022 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-02Work in progress.Nick Lewycky
Start cleaning up MergeFunctions to look more like the rest of LLVM. The primary change here is to move the methods responsible for comparison into the new FunctionComparator object. Some comments added. There's more to do. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110021 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-31Speculatively revert r108614, "Another attempt at getting the clang self-host toDaniel Dunbar
like my instcombine patch.", in an attempt to fix Clang i386 bootstrap. - Also PR7719. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109953 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-31The BlockExtractorPass() constructor was not reading the BlockFile and that wasRafael Espindola
exactly what bugpoint expected it to do. There was also only one user of BlockExtractorPass(const std::vector<BasicBlock*> &B), so just remove it and make BlockExtractorPass read BlockFile. This fixes bugpoint's block extraction. Nick, please review. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109936 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-30Move MaximumAlignment to be a member of the Value class.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109891 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-30Add missing newline to debug statement.Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109886 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-29PR7750: !CExpr->isNullValue() only properly computes whether CExpr is nonnullEli Friedman
if CExpr is a ConstantInt. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109773 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-28simplify by using CallSite constructors; virtually eliminates CallSite::get ↵Gabor Greif
from the tree git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109687 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-28Define a maximum supported alignment value for load, store, andDan Gohman
alloca instructions (constrained by their internal encoding), and add error checking for it. Fix an instcombine bug which generated huge alignment values (null is infinitely aligned). This fixes undefined behavior noticed by John Regehr. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109643 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-28When user code intentionally dereferences null, the alignment of theDan Gohman
dereference is theoretically infinite. Put a cap on the computed alignment to avoid overflow, noticed by John Regehr. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109596 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-28simplifyGabor Greif
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109589 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-28use Value* constructor of CallSite to create potentially improper site, and ↵Gabor Greif
test that git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109581 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-27recommit simplification (r109502, backed out r109509); seems to innocentGabor Greif
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109510 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-27back out this too to restore the botsGabor Greif
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109509 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-27simplify: CallSite::get --> CallSite constructorGabor Greif
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109506 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-27simplifyGabor Greif
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109502 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-26Add an initial implementation of LazyValueInfo updating for JumpThreading. ↵Owen Anderson
Disabled for now. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109424 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-26Remove LCSSA's bogus dependence on LoopSimplify and LoopSimplify's bogusDan Gohman
dependence on DominanceFrontier. Instead, add an explicit DominanceFrontier pass in StandardPasses.h to ensure that it gets scheduled at the right time. Declare that loop unrolling preserves ScalarEvolution, and shuffle some getAnalysisUsages. This eliminates one LoopSimplify and one LCCSA run in the standard compile opts sequence. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109413 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-26Preserve ScalarEvolution in the loop unroller.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109412 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-26Use DominatorTree::properlyDominates instead of dominates with anDan Gohman
explicit inequality check. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109401 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-26A block dominates itself, by definition.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109400 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-24Revert this because we can't clone cyclic MDNodes which are creating during aNick Lewycky
build of llvm-gcc. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109355 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-24Whether function-local or not, a MDNode may reference a Function in which caseNick Lewycky
it needs to be mapped to refer to the function in the new module, not the old one. Fixes PR7700. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109353 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-22Speculatively revert 109117Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109132 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-22keep in 80 colsGabor Greif
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109122 91177308-0d34-0410-b5e6-96231b3b80d8
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