diff options
Diffstat (limited to 'llvm/test/Transforms/InstCombine/deadcode.ll')
| -rw-r--r-- | llvm/test/Transforms/InstCombine/deadcode.ll | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/llvm/test/Transforms/InstCombine/deadcode.ll b/llvm/test/Transforms/InstCombine/deadcode.ll new file mode 100644 index 00000000000..c5fa58babdb --- /dev/null +++ b/llvm/test/Transforms/InstCombine/deadcode.ll @@ -0,0 +1,33 @@ +; RUN: opt < %s -instcombine -S | grep "ret i32 %A" +; RUN: opt < %s -die -S | not grep call.*llvm + +define i32 @test(i32 %A) { + %X = or i1 false, false + br i1 %X, label %T, label %C + +T: ; preds = %0 + %B = add i32 %A, 1 + br label %C + +C: ; preds = %T, %0 + %C.upgrd.1 = phi i32 [ %B, %T ], [ %A, %0 ] + ret i32 %C.upgrd.1 +} + +define i32* @test2(i32 %width) { + %tmp = call i8* @llvm.stacksave( ) + %tmp14 = alloca i32, i32 %width + ret i32* %tmp14 +} + +declare i8* @llvm.stacksave() + +declare void @llvm.lifetime.start.p0i8(i64, i8*) +declare void @llvm.lifetime.end.p0i8(i64, i8*) + +define void @test3() { + call void @llvm.lifetime.start.p0i8(i64 -1, i8* undef) + call void @llvm.lifetime.end.p0i8(i64 -1, i8* undef) + ret void +} + |
