diff --git a/test/CodeGen/X86/compare_folding.llx b/test/CodeGen/X86/compare_folding.llx
index 3d8e6c75fca..2d003f01bf1 100644
--- a/test/CodeGen/X86/compare_folding.llx
+++ b/test/CodeGen/X86/compare_folding.llx
@@ -1,11 +1,9 @@
 ; RUN: llvm-as < %s | llc -march=x86 | grep com | wc -l > %t2
 ; RUN: grep 'COM =' %s | grep -v grep | wc -l > %t1
 ; RUN: diff %t1 %t2
-declare bool %llvm.isnan(double)
+declare bool %llvm.isunordered(double,double)
 
 bool %test1(double %X, double %Y) {  ;; Returns isunordered(X,Y)
-	%a = call bool %llvm.isnan(double %X)
-	%b = call bool %llvm.isnan(double %Y)
-	%COM = or bool %a, %b
+	%COM = call bool %llvm.isunordered(double %X, double %Y)
 	ret bool %COM
 }