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-rw-r--r--llvm/test/Transforms/InstCombine/mul.ll12
1 files changed, 12 insertions, 0 deletions
diff --git a/llvm/test/Transforms/InstCombine/mul.ll b/llvm/test/Transforms/InstCombine/mul.ll
index a52c31ab4af..d19338a3c8f 100644
--- a/llvm/test/Transforms/InstCombine/mul.ll
+++ b/llvm/test/Transforms/InstCombine/mul.ll
@@ -255,3 +255,15 @@ define i32 @test28(i32 %A) {
; CHECK-NEXT: %[[shl2:.*]] = shl i32 %[[shl1]], %A
; CHECK-NEXT: ret i32 %[[shl2]]
}
+
+define i64 @test29(i31 %A, i31 %B) {
+; CHECK-LABEL: @test29(
+ %C = zext i31 %A to i64
+ %D = zext i31 %B to i64
+ %E = mul i64 %C, %D
+ ret i64 %E
+; CHECK: %[[zext1:.*]] = zext i31 %A to i64
+; CHECK-NEXT: %[[zext2:.*]] = zext i31 %B to i64
+; CHECK-NEXT: %[[mul:.*]] = mul nsw i64 %[[zext1]], %[[zext2]]
+; CHECK-NEXT: ret i64 %[[mul]]
+}
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