Fold icmp ugt (udiv X, Y), X to false. Spotted by my super-optimizer
in 186.crafty.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143209 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Transforms/InstSimplify/compare.ll b/test/Transforms/InstSimplify/compare.ll
index 3ece118..57727c9 100644
--- a/test/Transforms/InstSimplify/compare.ll
+++ b/test/Transforms/InstSimplify/compare.ll
@@ -300,6 +300,30 @@
; CHECK: ret i1 true
}
+define i1 @udiv3(i32 %X, i32 %Y) {
+; CHECK: @udiv3
+ %A = udiv i32 %X, %Y
+ %C = icmp ugt i32 %A, %X
+ ret i1 %C
+; CHECK: ret i1 false
+}
+
+define i1 @udiv4(i32 %X, i32 %Y) {
+; CHECK: @udiv4
+ %A = udiv i32 %X, %Y
+ %C = icmp ule i32 %A, %X
+ ret i1 %C
+; CHECK: ret i1 true
+}
+
+define i1 @udiv5(i32 %X) {
+; CHECK: @udiv5
+ %A = udiv i32 123, %X
+ %C = icmp ugt i32 %A, 124
+ ret i1 %C
+; CHECK: ret i1 false
+}
+
define i1 @sdiv1(i32 %X) {
; CHECK: @sdiv1
%A = sdiv i32 %X, 1000000