Xamarin Public Jenkins (auto-signing) e19d552987 Imported Upstream version 5.18.0.161
Former-commit-id: 4db48158d3a35497b8f118ab21b5f08ac3d86d98
2018-10-19 08:34:24 +00:00

33 lines
699 B
LLVM

; RUN: opt < %s -sccp -S | FileCheck %s
; Test that SCCP has basic knowledge of when div can nuke overdefined values.
; 0 / X = 0 even if X is overdefined.
; CHECK-LABEL: test1
; CHECK-NEXT: ret i32 0
define i32 @test1(i32 %foo) {
%tinkywinky = udiv i32 0, %foo
ret i32 %tinkywinky
}
; CHECK-LABEL: test2
; CHECK-NEXT: ret i32 0
define i32 @test2(i32 %foo) {
%tinkywinky = sdiv i32 0, %foo
ret i32 %tinkywinky
}
; CHECK-LABEL: test3
; CHECK: ret i32 %tinkywinky
define i32 @test3(i32 %foo) {
%tinkywinky = udiv i32 %foo, 0
ret i32 %tinkywinky
}
; CHECK-LABEL: test4
; CHECK: ret i32 %tinkywinky
define i32 @test4(i32 %foo) {
%tinkywinky = sdiv i32 %foo, 0
ret i32 %tinkywinky
}