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-rw-r--r--test/Transforms/InstSimplify/2010-12-20-Distribute.ll11
1 files changed, 11 insertions, 0 deletions
diff --git a/test/Transforms/InstSimplify/2010-12-20-Distribute.ll b/test/Transforms/InstSimplify/2010-12-20-Distribute.ll
index 4aac8dd..60cef48 100644
--- a/test/Transforms/InstSimplify/2010-12-20-Distribute.ll
+++ b/test/Transforms/InstSimplify/2010-12-20-Distribute.ll
@@ -20,6 +20,17 @@ define i32 @factorize2(i32 %x) {
; CHECK: ret i32 %x
}
+define i32 @factorize3(i32 %x, i32 %a, i32 %b) {
+; CHECK: @factorize3
+; (X | (A|B)) & (X | B) -> X | ((A|B) & B) -> X | B
+ %aORb = or i32 %a, %b
+ %l = or i32 %x, %aORb
+ %r = or i32 %x, %b
+ %z = and i32 %l, %r
+ ret i32 %z
+; CHECK: ret i32 %r
+}
+
define i32 @expand(i32 %x) {
; CHECK: @expand
; ((X & 1) | 2) & 1 -> ((X & 1) & 1) | (2 & 1) -> (X & 1) | 0 -> X & 1