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
diff --git a/lib/Analysis/AliasAnalysisCounter.cpp b/lib/Analysis/AliasAnalysisCounter.cpp
index eea2c99..2fccff1 100644
--- a/lib/Analysis/AliasAnalysisCounter.cpp
+++ b/lib/Analysis/AliasAnalysisCounter.cpp
@@ -89,9 +89,15 @@
bool pointsToConstantMemory(const Value *P) {
return getAnalysis<AliasAnalysis>().pointsToConstantMemory(P);
}
+ bool doesNotAccessMemory(CallSite CS) {
+ return getAnalysis<AliasAnalysis>().doesNotAccessMemory(CS);
+ }
bool doesNotAccessMemory(Function *F) {
return getAnalysis<AliasAnalysis>().doesNotAccessMemory(F);
}
+ bool onlyReadsMemory(CallSite CS) {
+ return getAnalysis<AliasAnalysis>().onlyReadsMemory(CS);
+ }
bool onlyReadsMemory(Function *F) {
return getAnalysis<AliasAnalysis>().onlyReadsMemory(F);
}