[Driver] Fuchsia defaults to -fno-math-errno

Patch by Roland McGrath

Differential Revision: https://reviews.llvm.org/D35747

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@308855 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Driver/ToolChains/Fuchsia.h b/lib/Driver/ToolChains/Fuchsia.h
index a723a99dfa3bf33b648ac54489072c0c8a853ea1..2eb8f011a1a8dbbd6d4df8d9c06aae357d403609 100644 (file)
--- a/lib/Driver/ToolChains/Fuchsia.h
+++ b/lib/Driver/ToolChains/Fuchsia.h
@@ -42,6 +42,7 @@ public:
 
   bool HasNativeLLVMSupport() const override { return true; }
   bool IsIntegratedAssemblerDefault() const override { return true; }
+  bool IsMathErrnoDefault() const override { return false; }
   RuntimeLibType GetDefaultRuntimeLibType() const override {
     return ToolChain::RLT_CompilerRT;
   }

diff --git a/test/Driver/fast-math.c b/test/Driver/fast-math.c
index 97fda009b9cf239a7e91e839f598dbd8ffb75e7f..5094a5bc1abc0244c513a892d58575d06bff7770 100644 (file)
--- a/test/Driver/fast-math.c
+++ b/test/Driver/fast-math.c
@@ -93,6 +93,8 @@
 // RUN:   | FileCheck --check-prefix=CHECK-NO-MATH-ERRNO %s
 // RUN: %clang -### -target x86_64-unknown-dragonfly -c %s 2>&1 \
 // RUN:   | FileCheck --check-prefix=CHECK-NO-MATH-ERRNO %s
+// RUN: %clang -### -target x86_64-fuchsia -c %s 2>&1 \
+// RUN:   | FileCheck --check-prefix=CHECK-NO-MATH-ERRNO %s
 //
 // Check that -ffast-math disables -fmath-errno, and -fno-fast-math merely
 // preserves the target default. Also check various flag set operations between