diff options
| author | Rafael Espindola <rafael.espindola@gmail.com> | 2012-03-28 21:31:24 +0000 |
|---|---|---|
| committer | Rafael Espindola <rafael.espindola@gmail.com> | 2012-03-28 21:31:24 +0000 |
| commit | 8f3fabe0febb7335c4349d3d6081deca95419d48 (patch) | |
| tree | b9f9f4393c00ded51ad2cc1956d30d7aa583fdfa | |
| parent | 5b2f9136644c58ae32e00d8317540692a697d1c9 (diff) | |
| download | external_llvm-8f3fabe0febb7335c4349d3d6081deca95419d48.tar.gz external_llvm-8f3fabe0febb7335c4349d3d6081deca95419d48.tar.bz2 external_llvm-8f3fabe0febb7335c4349d3d6081deca95419d48.zip | |
Handle intrinsics in GlobalsModRef. Fixes pr12351.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153604 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/Analysis/IPA/GlobalsModRef.cpp | 6 | ||||
| -rw-r--r-- | test/Analysis/GlobalsModRef/pr12351.ll | 33 |
2 files changed, 39 insertions, 0 deletions
diff --git a/lib/Analysis/IPA/GlobalsModRef.cpp b/lib/Analysis/IPA/GlobalsModRef.cpp index b226d66cd7..c1d8e3e65a 100644 --- a/lib/Analysis/IPA/GlobalsModRef.cpp +++ b/lib/Analysis/IPA/GlobalsModRef.cpp @@ -21,6 +21,7 @@ #include "llvm/Instructions.h" #include "llvm/Constants.h" #include "llvm/DerivedTypes.h" +#include "llvm/IntrinsicInst.h" #include "llvm/Analysis/AliasAnalysis.h" #include "llvm/Analysis/CallGraph.h" #include "llvm/Analysis/MemoryBuiltins.h" @@ -467,6 +468,11 @@ void GlobalsModRef::AnalyzeCallGraph(CallGraph &CG, Module &M) { } else if (isMalloc(&cast<Instruction>(*II)) || isFreeCall(&cast<Instruction>(*II))) { FunctionEffect |= ModRef; + } else if (IntrinsicInst *Intrinsic = dyn_cast<IntrinsicInst>(&*II)) { + // The callgraph doesn't include intrinsic calls. + Function *Callee = Intrinsic->getCalledFunction(); + ModRefBehavior Behaviour = AliasAnalysis::getModRefBehavior(Callee); + FunctionEffect |= (Behaviour & ModRef); } if ((FunctionEffect & Mod) == 0) diff --git a/test/Analysis/GlobalsModRef/pr12351.ll b/test/Analysis/GlobalsModRef/pr12351.ll new file mode 100644 index 0000000000..1c5ac43f8d --- /dev/null +++ b/test/Analysis/GlobalsModRef/pr12351.ll @@ -0,0 +1,33 @@ +; RUN: opt < %s -basicaa -globalsmodref-aa -gvn -S | FileCheck %s + +declare void @llvm.memcpy.p0i8.p0i8.i32(i8*, i8*, i32, i32, i1) +define void @foo(i8* %x, i8* %y) { + call void @llvm.memcpy.p0i8.p0i8.i32(i8* %x, i8* %y, i32 1, i32 1, i1 false); + ret void +} + +define void @bar(i8* %y, i8* %z) { + %x = alloca i8 + call void @foo(i8* %x, i8* %y) + %t = load i8* %x + store i8 %t, i8* %y +; CHECK: store i8 %t, i8* %y + ret void +} + + +define i32 @foo2() { + %foo = alloca i32 + call void @bar2(i32* %foo) + %t0 = load i32* %foo, align 4 +; CHECK: %t0 = load i32* %foo, align 4 + ret i32 %t0 +} + +define void @bar2(i32* %foo) { + store i32 0, i32* %foo, align 4 + tail call void @llvm.dbg.value(metadata !{}, i64 0, metadata !{}) + ret void +} + +declare void @llvm.dbg.value(metadata, i64, metadata) nounwind readnone |