From db249f379e2e8541fb8771236fd6bb58be93658a Mon Sep 17 00:00:00 2001
From: krebbel <krebbel@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Mon, 1 Jun 2015 11:38:44 +0000
Subject: S390: Support -mtune=native and -march=native.

gcc/ChangeLog

2015-06-01  Dominik Vogt  <vogt@linux.vnet.ibm.com>

	    * config/s390/driver-native.c: New file.
	    * config/s390/x-native: New file.
	    * config.host: Add new files for s390.
	    * config/s390/s390.h (DRIVER_SELF_SPECS): Add support for -mtune=native
	    and -march=native
	    * config.gcc: Likewise.
	    * config/s390/s390.opt (march): Likewise; add PROCESSOR_NATIVE
	    * config/s390/s390-opts.h (enum processor_type): Ditto.
	    * config/s390/s390.c (s390_option_override): Catch unhandled
	    PROCESSOR_NATIVE



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@223934 138bc75d-0d04-0410-961f-82ee72b054a4
---
 gcc/config/s390/s390.h | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

(limited to 'gcc/config/s390/s390.h')

diff --git a/gcc/config/s390/s390.h b/gcc/config/s390/s390.h
index a9bf9b5b1cb..85a0d1af65a 100644
--- a/gcc/config/s390/s390.h
+++ b/gcc/config/s390/s390.h
@@ -126,17 +126,27 @@ enum processor_flags
   { "arch", "%{!march=*:-march=%(VALUE)}" },			\
   { "tune", "%{!mtune=*:-mtune=%(VALUE)}" }
 
+extern const char *s390_host_detect_local_cpu (int argc, const char **argv);
+# define EXTRA_SPEC_FUNCTIONS \
+  { "local_cpu_detect", s390_host_detect_local_cpu },
+
+# define MARCH_MTUNE_NATIVE_SPECS				\
+  " %{march=native:%<march=native %:local_cpu_detect(arch)}"	\
+  " %{mtune=native:%<mtune=native %:local_cpu_detect(tune)}"
+
 /* Defaulting rules.  */
 #ifdef DEFAULT_TARGET_64BIT
 #define DRIVER_SELF_SPECS					\
   "%{!m31:%{!m64:-m64}}",					\
   "%{!mesa:%{!mzarch:%{m31:-mesa}%{m64:-mzarch}}}",		\
-  "%{!march=*:%{mesa:-march=g5}%{mzarch:-march=z900}}"
+  "%{!march=*:%{mesa:-march=g5}%{mzarch:-march=z900}}",		\
+  MARCH_MTUNE_NATIVE_SPECS
 #else
 #define DRIVER_SELF_SPECS					\
   "%{!m31:%{!m64:-m31}}",					\
   "%{!mesa:%{!mzarch:%{m31:-mesa}%{m64:-mzarch}}}",		\
-  "%{!march=*:%{mesa:-march=g5}%{mzarch:-march=z900}}"
+  "%{!march=*:%{mesa:-march=g5}%{mzarch:-march=z900}}",		\
+  MARCH_MTUNE_NATIVE_SPECS
 #endif
 
 /* Constants needed to control the TEST DATA CLASS (TDC) instruction.  */
-- 
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