#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"
} 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)
--- /dev/null
+; 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