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-rw-r--r--test/Transforms/InstCombine/and.ll13
1 files changed, 13 insertions, 0 deletions
diff --git a/test/Transforms/InstCombine/and.ll b/test/Transforms/InstCombine/and.ll
index 67b34a3..b217c7e 100644
--- a/test/Transforms/InstCombine/and.ll
+++ b/test/Transforms/InstCombine/and.ll
@@ -179,3 +179,16 @@ ubyte %test27(ubyte %A) {
%E = add ubyte %D, 16
ret ubyte %E
}
+
+int %test28(int %X) { ;; This is juse a zero extending shr.
+ %Y = shr int %X, ubyte 24 ;; Sign extend
+ %Z = and int %Y, 255 ;; Mask out sign bits
+ ret int %Z
+}
+
+int %test29(ubyte %X) {
+ %Y = cast ubyte %X to int
+ %Z = and int %Y, 255 ;; Zero extend makes this unneeded.
+ ret int %Z
+}
+