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-rw-r--r--test/CodeGen/Alpha/zapnot3.ll15
1 files changed, 15 insertions, 0 deletions
diff --git a/test/CodeGen/Alpha/zapnot3.ll b/test/CodeGen/Alpha/zapnot3.ll
new file mode 100644
index 0000000..f02961f
--- /dev/null
+++ b/test/CodeGen/Alpha/zapnot3.ll
@@ -0,0 +1,15 @@
+; RUN: llc < %s -march=alpha | grep zapnot
+
+;demanded bits mess up this mask in a hard to fix way
+;define i64 @foo(i64 %y) {
+; %tmp = and i64 %y, 65535
+; %tmp2 = shr i64 %tmp, i8 3
+; ret i64 %tmp2
+;}
+
+define i64 @foo2(i64 %y) {
+ %tmp = lshr i64 %y, 3 ; <i64> [#uses=1]
+ %tmp2 = and i64 %tmp, 8191 ; <i64> [#uses=1]
+ ret i64 %tmp2
+}
+