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author | Duncan Sands <baldrick@free.fr> | 2007-12-01 07:51:45 +0000 |
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committer | Duncan Sands <baldrick@free.fr> | 2007-12-01 07:51:45 +0000 |
commit | dff6710717b159f089c76a07eda074eb6347eb92 (patch) | |
tree | 7bbd754ebe64f5d4bbc6000e0e66bdd99f9c847f /lib/Analysis/MemoryDependenceAnalysis.cpp | |
parent | e3110d0825e6316fd2dd21d6a4e593295cd413f1 (diff) | |
download | external_llvm-dff6710717b159f089c76a07eda074eb6347eb92.zip external_llvm-dff6710717b159f089c76a07eda074eb6347eb92.tar.gz external_llvm-dff6710717b159f089c76a07eda074eb6347eb92.tar.bz2 |
Integrate the readonly/readnone logic more deeply
into alias analysis. This meant updating the API
which now has versions of the getModRefBehavior,
doesNotAccessMemory and onlyReadsMemory methods
which take a callsite parameter. These should be
used unless the callsite is not known, since in
general they can do a better job than the versions
that take a function. Also, users should no longer
call the version of getModRefBehavior that takes
both a function and a callsite. To reduce the
chance of misuse it is now protected.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44487 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Analysis/MemoryDependenceAnalysis.cpp')
-rw-r--r-- | lib/Analysis/MemoryDependenceAnalysis.cpp | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/lib/Analysis/MemoryDependenceAnalysis.cpp b/lib/Analysis/MemoryDependenceAnalysis.cpp index dd567aa..8c5f216 100644 --- a/lib/Analysis/MemoryDependenceAnalysis.cpp +++ b/lib/Analysis/MemoryDependenceAnalysis.cpp @@ -94,11 +94,9 @@ Instruction* MemoryDependenceAnalysis::getCallSiteDependency(CallSite C, // FreeInsts erase the entire structure pointerSize = ~0UL; - } else if (CallSite::get(QI).getInstruction() != 0 && - cast<CallInst>(QI)->getCalledFunction()) { + } else if (isa<CallInst>(QI)) { AliasAnalysis::ModRefBehavior result = - AA.getModRefBehavior(cast<CallInst>(QI)->getCalledFunction(), - CallSite::get(QI)); + AA.getModRefBehavior(CallSite::get(QI)); if (result != AliasAnalysis::DoesNotAccessMemory && result != AliasAnalysis::OnlyReadsMemory) { if (!start && !block) { |