Fix missing use of defined() in include guard

Subscribers: arsenm, jvesely, nhaehnle, hiraditya, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D64657

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@365952 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/AMDGPU/AMDGPULibCalls.cpp b/lib/Target/AMDGPU/AMDGPULibCalls.cpp
index 7156824638a05cee2ab7a80b60eb79f680916598..ce0a9db7c7f413c2329b14bc3d9589d2e6718876 100644 (file)
--- a/lib/Target/AMDGPU/AMDGPULibCalls.cpp
+++ b/lib/Target/AMDGPU/AMDGPULibCalls.cpp
@@ -865,7 +865,7 @@ bool AMDGPULibCalls::fold_divide(CallInst *CI, IRBuilder<> &B,
 
 namespace llvm {
 static double log2(double V) {
-#if _XOPEN_SOURCE >= 600 || _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L
+#if _XOPEN_SOURCE >= 600 || defined(_ISOC99_SOURCE) || _POSIX_C_SOURCE >= 200112L
   return ::log2(V);
 #else
   return log(V) / 0.693147180559945309417;