diff options
Diffstat (limited to 'llvm/test/Analysis/BasicAA/sequential-gep.ll')
| -rw-r--r-- | llvm/test/Analysis/BasicAA/sequential-gep.ll | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/llvm/test/Analysis/BasicAA/sequential-gep.ll b/llvm/test/Analysis/BasicAA/sequential-gep.ll new file mode 100644 index 00000000000..f59843742f4 --- /dev/null +++ b/llvm/test/Analysis/BasicAA/sequential-gep.ll @@ -0,0 +1,43 @@ +; RUN: opt < %s -basicaa -aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s + +; CHECK: Function: t1 +; CHECK: NoAlias: i32* %gep1, i32* %gep2 +define void @t1([8 x i32]* %p, i32 %addend, i32* %q) { + %knownnonzero = load i32, i32* %q, !range !0 + %add = add nsw nuw i32 %addend, %knownnonzero + %gep1 = getelementptr [8 x i32], [8 x i32]* %p, i32 2, i32 %addend + %gep2 = getelementptr [8 x i32], [8 x i32]* %p, i32 2, i32 %add + ret void +} + +; CHECK: Function: t2 +; CHECK: PartialAlias: i32* %gep1, i32* %gep2 +define void @t2([8 x i32]* %p, i32 %addend, i32* %q) { + %knownnonzero = load i32, i32* %q, !range !0 + %add = add nsw nuw i32 %addend, %knownnonzero + %gep1 = getelementptr [8 x i32], [8 x i32]* %p, i32 1, i32 %addend + %gep2 = getelementptr [8 x i32], [8 x i32]* %p, i32 0, i32 %add + ret void +} + +; CHECK: Function: t3 +; CHECK: MustAlias: i32* %gep1, i32* %gep2 +define void @t3([8 x i32]* %p, i32 %addend, i32* %q) { + %knownnonzero = load i32, i32* %q, !range !0 + %add = add nsw nuw i32 %addend, %knownnonzero + %gep1 = getelementptr [8 x i32], [8 x i32]* %p, i32 0, i32 %add + %gep2 = getelementptr [8 x i32], [8 x i32]* %p, i32 0, i32 %add + ret void +} + +; CHECK: Function: t4 +; CHECK: PartialAlias: i32* %gep1, i32* %gep2 +define void @t4([8 x i32]* %p, i32 %addend, i32* %q) { + %knownnonzero = load i32, i32* %q, !range !0 + %add = add nsw nuw i32 %addend, %knownnonzero + %gep1 = getelementptr [8 x i32], [8 x i32]* %p, i32 1, i32 %addend + %gep2 = getelementptr [8 x i32], [8 x i32]* %p, i32 %add, i32 %add + ret void +} + +!0 = !{ i32 1, i32 5 } |
