1 files changed, 20 insertions, 0 deletions
diff --git a/test/Transforms/InstCombine/2010-11-01-lshr-mask.ll b/test/Transforms/InstCombine/2010-11-01-lshr-mask.ll
new file mode 100644
index 0000000..d74c70e
--- /dev/null
+++ b/test/Transforms/InstCombine/2010-11-01-lshr-mask.ll
@@ -0,0 +1,20 @@
+; RUN: opt -instcombine -S < %s | FileCheck %s
+; <rdar://problem/8606771>
+
+define i32 @main(i32 %argc) nounwind ssp {
+entry:
+  %tmp3151 = trunc i32 %argc to i8
+  %tmp3161 = or i8 %tmp3151, -17
+  %tmp3162 = and i8 %tmp3151, 122
+  %tmp3163 = xor i8 %tmp3162, -17
+  %tmp4114 = shl i8 %tmp3163, 6
+  %tmp4115 = xor i8 %tmp4114, %tmp3163
+  %tmp4120 = xor i8 %tmp3161, %tmp4115
+; CHECK: lshr i8 %tmp4115, 1
+; CHECK-NOT: shl i8 %tmp4126, 6
+  %tmp4126 = lshr i8 %tmp4120, 7
+  %tmp4127 = mul i8 %tmp4126, 64
+  %tmp4086 = zext i8 %tmp4127 to i32
+; CHECK: ret i32
+  ret i32 %tmp4086
+}