1; RUN: opt < %s -sccp -S | FileCheck %s
2
3; Test that SCCP has basic knowledge of when div can nuke overdefined values.
4
5; 0 / X = 0 even if X is overdefined.
6; CHECK-LABEL: test1
7; CHECK-NEXT: ret i32 0
8define i32 @test1(i32 %foo) {
9  %tinkywinky = udiv i32 0, %foo
10  ret i32 %tinkywinky
11}
12
13; CHECK-LABEL: test2
14; CHECK-NEXT: ret i32 0
15define i32 @test2(i32 %foo) {
16  %tinkywinky = sdiv i32 0, %foo
17  ret i32 %tinkywinky
18}
19
20; CHECK-LABEL: test3
21; CHECK: ret i32 %tinkywinky
22define i32 @test3(i32 %foo) {
23  %tinkywinky = udiv i32 %foo, 0
24  ret i32 %tinkywinky
25}
26
27; CHECK-LABEL: test4
28; CHECK: ret i32 %tinkywinky
29define i32 @test4(i32 %foo) {
30  %tinkywinky = sdiv i32 %foo, 0
31  ret i32 %tinkywinky
32}
33