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-rw-r--r--llvm/test/Transforms/GVN/pr12979.ll14
1 files changed, 14 insertions, 0 deletions
diff --git a/llvm/test/Transforms/GVN/pr12979.ll b/llvm/test/Transforms/GVN/pr12979.ll
index 0198a56513e..919c22de02a 100644
--- a/llvm/test/Transforms/GVN/pr12979.ll
+++ b/llvm/test/Transforms/GVN/pr12979.ll
@@ -77,3 +77,17 @@ define i32 @test7(i32 %x, i32 %y) {
%foo = add i32 %add1, %add2
ret i32 %foo
}
+
+declare void @mumble(i2, i2)
+
+define void @test8(i2 %x) {
+; CHECK-LABEL: @test8(
+; CHECK: %[[ashr:.*]] = ashr i2 %x, 1
+; CHECK-NEXT: call void @mumble(i2 %[[ashr]], i2 %[[ashr]])
+; CHECK-NEXT: ret void
+
+ %ashr0 = ashr exact i2 %x, 1
+ %ashr1 = ashr i2 %x, 1
+ call void @mumble(i2 %ashr0, i2 %ashr1)
+ ret void
+}
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