[SCCP] Make the test added in r289175 more meaningful.

Add a comment while here. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@289182 91177308-0d34-0410-b5e6-96231b3b80d8
multun · Dec 9, 2016 · 11200e1 · 11200e1
1 parent 45b7e0e
commit 11200e1
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/test/Transforms/SCCP/logical-nuke.ll b/test/Transforms/SCCP/logical-nuke.ll
@@ -30,9 +30,10 @@ define i32 @test4(i32 %X) {
   ret i32 %Y
 }
 
+; X * 0 = 0 even if X is overdefined.
 ; CHECK-LABEL: test5
 ; CHECK: ret i32 0
 define i32 @test5(i32 %foo) {
-  %patatino = mul i32 %foo, undef
+  %patatino = mul i32 %foo, 0
   ret i32 %patatino
 }