1; RUN: opt < %s -passes=instcombine -S | grep "ret i32 %A" 2; RUN: opt < %s -passes=dce -S | not grep call.*llvm 3 4define i32 @test(i32 %A) { 5 %X = or i1 false, false 6 br i1 %X, label %T, label %C 7 8T: ; preds = %0 9 %B = add i32 %A, 1 10 br label %C 11 12C: ; preds = %T, %0 13 %C.upgrd.1 = phi i32 [ %B, %T ], [ %A, %0 ] 14 ret i32 %C.upgrd.1 15} 16 17define ptr @test2(i32 %width) { 18 %tmp = call ptr @llvm.stacksave( ) 19 %tmp14 = alloca i32, i32 %width 20 ret ptr %tmp14 21} 22 23declare ptr @llvm.stacksave() 24 25declare void @llvm.lifetime.start.p0(i64, ptr) 26declare void @llvm.lifetime.end.p0(i64, ptr) 27 28define void @test3() { 29 call void @llvm.lifetime.start.p0(i64 -1, ptr undef) 30 call void @llvm.lifetime.end.p0(i64 -1, ptr undef) 31 ret void 32} 33 34