[llvm] 6147501 - [InstSimplify] Add a test for folding comparison with a undef vector (NFC)

[Juneyoung Lee via llvm-commits]

Author: Juneyoung Lee
Date: 2021-04-04T13:46:56+09:00
New Revision: 6147501617f0a9e7d81bc5fa0182ba669bc2e520

URL: https://github.com/llvm/llvm-project/commit/6147501617f0a9e7d81bc5fa0182ba669bc2e520
DIFF: https://github.com/llvm/llvm-project/commit/6147501617f0a9e7d81bc5fa0182ba669bc2e520.diff

LOG: [InstSimplify] Add a test for folding comparison with a undef vector (NFC)

This is to fix https://reviews.llvm.org/D93990#2666922

Added: 
    

Modified: 
    llvm/test/Transforms/InstSimplify/icmp-constant.ll

Removed: 
    


################################################################################
diff  --git a/llvm/test/Transforms/InstSimplify/icmp-constant.ll b/llvm/test/Transforms/InstSimplify/icmp-constant.ll
index 9db63e64b914..dbbce4b44e58 100644
--- a/llvm/test/Transforms/InstSimplify/icmp-constant.ll
+++ b/llvm/test/Transforms/InstSimplify/icmp-constant.ll
@@ -1065,3 +1065,13 @@ bb3:
   %m = mul nuw i8 %x, 0
   br label %bb2
 }
+
+
+define <2 x i1> @heterogeneous_constvector(<2 x i8> %x) {
+; CHECK-LABEL: @heterogeneous_constvector(
+; CHECK-NEXT:    [[C:%.*]] = icmp ult <2 x i8> [[X:%.*]], <i8 undef, i8 poison>
+; CHECK-NEXT:    ret <2 x i1> [[C]]
+;
+  %c = icmp ult <2 x i8> %x, <i8 undef, i8 poison>
+  ret <2 x i1> %c
+}