Check to make sure that isnan doesn't require calling a function

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14135 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/CodeGen/X86/isnan.llx b/test/CodeGen/X86/isnan.llx
new file mode 100644 (file)
index 0000000..eb7bed3
--- /dev/null
+++ b/test/CodeGen/X86/isnan.llx
@@ -0,0 +1,7 @@
+; RUN: llvm-as < %s | llc -march=x86 | not grep call
+declare bool %llvm.isnan(double)
+
+bool %test_isnan(double %X) {
+       %R = call bool %llvm.isnan(double %X)
+       ret bool %R
+}