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| author | Chris Lattner <sabre@nondot.org> | 2005-03-23 23:27:34 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2005-03-23 23:27:34 +0000 |
| commit | 8eec644862251e14add0d2707d655fcce91e8f70 (patch) | |
| tree | e7487028bc11f3665593c1c422ae0ddcbb642615 /include | |
| parent | 8cfd24df54025fcc56ce3707f1223958b9204813 (diff) | |
| download | llvm-8eec644862251e14add0d2707d655fcce91e8f70.tar.gz llvm-8eec644862251e14add0d2707d655fcce91e8f70.tar.bz2 llvm-8eec644862251e14add0d2707d655fcce91e8f70.tar.xz | |
if a function doesn't access memory at all, it definitely doesn't read it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20794 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include')
| -rw-r--r-- | include/llvm/Analysis/AliasAnalysis.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/llvm/Analysis/AliasAnalysis.h b/include/llvm/Analysis/AliasAnalysis.h index 73b646d935..0857190c5c 100644 --- a/include/llvm/Analysis/AliasAnalysis.h +++ b/include/llvm/Analysis/AliasAnalysis.h @@ -214,7 +214,8 @@ public: bool onlyReadsMemory(Function *F) { /// FIXME: If the analysis returns more precise info, we can reduce it to /// this. - return getModRefBehavior(F, CallSite()) == OnlyReadsMemory; + ModRefBehavior MRB = getModRefBehavior(F, CallSite()); + return MRB == DoesNotAccessMemory || MRB == OnlyReadsMemory; } |