[llvm] r365952 - Fix missing use of defined() in include guard

[David Tenty via llvm-commits]

Author: daltenty
Date: Fri Jul 12 13:12:15 2019
New Revision: 365952

URL: http://llvm.org/viewvc/llvm-project?rev=365952&view=rev
Log:
Fix missing use of defined() in include guard

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

Tags: #llvm

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

Modified:
    llvm/trunk/lib/Target/AMDGPU/AMDGPULibCalls.cpp

Modified: llvm/trunk/lib/Target/AMDGPU/AMDGPULibCalls.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/AMDGPU/AMDGPULibCalls.cpp?rev=365952&r1=365951&r2=365952&view=diff
==============================================================================
--- llvm/trunk/lib/Target/AMDGPU/AMDGPULibCalls.cpp (original)
+++ llvm/trunk/lib/Target/AMDGPU/AMDGPULibCalls.cpp Fri Jul 12 13:12:15 2019
@@ -865,7 +865,7 @@ bool AMDGPULibCalls::fold_divide(CallIns
 
 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;