Define __FINITE_MATH_ONLY__ based on -ffast-math and -ffinite-math-only.
This macro was being unconditionally set to zero, preceded by a FIXME comment.
This fixes <rdar://problem/11845441>. Patch by Michael Gottesman!
llvm-svn: 160491
diff --git a/clang/lib/Frontend/InitPreprocessor.cpp b/clang/lib/Frontend/InitPreprocessor.cpp
index 6120d11..3979731 100644
--- a/clang/lib/Frontend/InitPreprocessor.cpp
+++ b/clang/lib/Frontend/InitPreprocessor.cpp
@@ -527,9 +527,10 @@
if (const char *Prefix = TI.getUserLabelPrefix())
Builder.defineMacro("__USER_LABEL_PREFIX__", Prefix);
- // Build configuration options. FIXME: these should be controlled by
- // command line options or something.
- Builder.defineMacro("__FINITE_MATH_ONLY__", "0");
+ if (LangOpts.FastMath || LangOpts.FiniteMathOnly)
+ Builder.defineMacro("__FINITE_MATH_ONLY__", "1");
+ else
+ Builder.defineMacro("__FINITE_MATH_ONLY__", "0");
if (LangOpts.GNUInline)
Builder.defineMacro("__GNUC_GNU_INLINE__");