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-rw-r--r--test/Transforms/InstCombine/bswap-fold.ll6
1 files changed, 6 insertions, 0 deletions
diff --git a/test/Transforms/InstCombine/bswap-fold.ll b/test/Transforms/InstCombine/bswap-fold.ll
index 034c70e..a6b30c0 100644
--- a/test/Transforms/InstCombine/bswap-fold.ll
+++ b/test/Transforms/InstCombine/bswap-fold.ll
@@ -67,3 +67,9 @@ define i16 @test8(i64 %A) {
%D = tail call i16 @llvm.bswap.i16(i16 %C) nounwind
ret i16 %D
}
+
+; Misc: Fold bswap(undef) to undef.
+define i64 @foo() {
+ %a = call i64 @llvm.bswap.i64(i64 undef)
+ ret i64 %a
+}