[GVN] Fix test case for convergent calls

Without "willreturn" this did not get as far as testing the convergent
handling in GVN.

diff --git a/llvm/test/Transforms/GVN/pre-skip-convergent.ll b/llvm/test/Transforms/GVN/pre-skip-convergent.ll
index 6ccc818..8d384f2 100644 (file)
--- a/llvm/test/Transforms/GVN/pre-skip-convergent.ll
+++ b/llvm/test/Transforms/GVN/pre-skip-convergent.ll
@@ -30,6 +30,4 @@ merge:
   ret i32 %r0
 }
 
-declare i32 @llvm.convergent(i32) #0
-
-attributes #0 = { convergent nounwind readnone }
+declare i32 @llvm.convergent(i32) convergent nounwind readnone willreturn