; RUN: opt < %s -passes=instcombine -S | grep "ret i32 %A" ; RUN: opt < %s -passes=dce -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 ptr @test2(i32 %width) { %tmp = call ptr @llvm.stacksave( ) %tmp14 = alloca i32, i32 %width ret ptr %tmp14 } declare ptr @llvm.stacksave() declare void @llvm.lifetime.start.p0(i64, ptr) declare void @llvm.lifetime.end.p0(i64, ptr) define void @test3() { call void @llvm.lifetime.start.p0(i64 -1, ptr undef) call void @llvm.lifetime.end.p0(i64 -1, ptr undef) ret void }