Adjust libcalls tests to expect intrinsic for exp2



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55784 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/FrontendC/libcalls.c b/test/FrontendC/libcalls.c
index 648dc6f..9bb8431 100644
--- a/test/FrontendC/libcalls.c
+++ b/test/FrontendC/libcalls.c
@@ -1,6 +1,6 @@
 // llvm-gcc -O1+ should run simplify libcalls, O0 shouldn't
 // and -fno-builtins shouldn't.
-// RUN: %llvmgcc %s -S -emit-llvm -O0 -o - | grep {call.*exp2f}
+// RUN: %llvmgcc %s -S -emit-llvm -O0 -o - | grep {call.*exp2\\.f32}
 // RUN: %llvmgcc %s -S -emit-llvm -O1 -o - | grep {call.*ldexp}
 // RUN: %llvmgcc %s -S -emit-llvm -O3 -fno-builtin -o - | grep {call.*exp2f}