* config.host (<i[34567]86-*-*, x86_64-*-*>): Set

[pf3gnuchains/gcc-fork.git] / gcc / config / i386 / i386.h

diff --git a/gcc/config/i386/i386.h b/gcc/config/i386/i386.h
index b783913..a3a1129 100644 (file)
--- a/gcc/config/i386/i386.h
+++ b/gcc/config/i386/i386.h
@@ -273,6 +273,14 @@ extern int x86_prefetch_sse;
 #define OPTIMIZATION_OPTIONS(LEVEL, SIZE) \
   optimization_options ((LEVEL), (SIZE))
 
+/* -march=native handling only makes sense with a native compiler.  */
+#ifndef CROSS_COMPILE
+/* In driver-i386.c.  */
+extern const char *host_detect_local_cpu (int argc, const char **argv);
+#define EXTRA_SPEC_FUNCTIONS \
+  { "local_cpu_detect", host_detect_local_cpu },
+#endif
+
 /* Support for configure-time defaults of some command line options.  */
 #define OPTION_DEFAULT_SPECS \
   {"arch", "%{!march=*:-march=%(VALUE)}"}, \
@@ -282,7 +290,7 @@ extern int x86_prefetch_sse;
 /* Specs for the compiler proper */
 
 #ifndef CC1_CPU_SPEC
-#define CC1_CPU_SPEC "\
+#define CC1_CPU_SPEC_1 "\
 %{!mtune*: \
 %{m386:mtune=i386 \
 %n`-m386' is deprecated. Use `-march=i386' or `-mtune=i386' instead.\n} \
@@ -299,6 +307,14 @@ extern int x86_prefetch_sse;
 %n`-mintel-syntax' is deprecated. Use `-masm=intel' instead.\n} \
 %{mno-intel-syntax:-masm=att \
 %n`-mno-intel-syntax' is deprecated. Use `-masm=att' instead.\n}"
+
+#ifdef CROSS_COMPILE
+#define CC1_CPU_SPEC CC1_CPU_SPEC_1
+#else
+#define CC1_CPU_SPEC CC1_CPU_SPEC_1 \
+"%{march=native:%<march=native %:local_cpu_detect(arch)} \
+%{mtune=native:%<mtune=native %:local_cpu_detect(tune)}"
+#endif
 #endif
 \f
 /* Target CPU builtins.  */