[PATCH] D32423: Simplify barriers of null and undef

[Davide Italiano via Phabricator via llvm-commits]

davide added a comment.

This is fine but please hold committing it until the other half goes in.



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Comment at: test/Transforms/GVN/invariant.group.ll:488-490
+; CHECK: ret i8* null
+  %b2 = call i8* @llvm.invariant.group.barrier(i8* null)
+  ret i8* %b2
----------------
CHECK-NEXT:


================
Comment at: test/Transforms/GVN/invariant.group.ll:493-495
+; CHECK-LABEL: define i8* @siplifyUndefBarrier()
+define i8* @siplifyUndefBarrier() {
+; CHECK: ret i8* undef
----------------
CHECK-NEXT:


https://reviews.llvm.org/D32423