From: Eric Botcazou <ebotcazou@adacore.com>
Date: Thu, 26 May 2011 12:46:47 +0000 (+0000)
Subject: sparc-protos.h (sparc_optimization_options): Declare.
X-Git-Tag: releases/gcc-4.5.4~621
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=16f716164e9d1cc94cc1b0d8ce5ececab7aee54e;p=thirdparty%2Fgcc.git

sparc-protos.h (sparc_optimization_options): Declare.

	* config/sparc/sparc-protos.h (sparc_optimization_options): Declare.
	* config/sparc/sparc.h (OPTIMIZATION_OPTIONS): Define.
	* config/sparc/sparc.c (sparc_optimization_options): New function.
	Set flag_ira_share_save_slots to 0.

From-SVN: r174280
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 6ec4e5e952cc..5f20ec89f0a9 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,10 @@
 2011-05-26  Eric Botcazou  <ebotcazou@adacore.com>
 
+	* config/sparc/sparc-protos.h (sparc_optimization_options): Declare.
+	* config/sparc/sparc.h (OPTIMIZATION_OPTIONS): Define.
+	* config/sparc/sparc.c (sparc_optimization_options): New function.
+	Set flag_ira_share_save_slots to 0.
+
 	Backport from mainline
 	2011-01-21  Jeff Law  <law@redhat.com>
 
diff --git a/gcc/config/sparc/sparc-protos.h b/gcc/config/sparc/sparc-protos.h
index fc6a990dc268..88aca6fa4310 100644
--- a/gcc/config/sparc/sparc-protos.h
+++ b/gcc/config/sparc/sparc-protos.h
@@ -48,6 +48,7 @@ extern bool sparc_can_use_return_insn_p (void);
 extern int check_pic (int);
 extern int short_branch (int, int);
 extern void sparc_profile_hook (int);
+extern void sparc_optimization_options (int, int);
 extern void sparc_override_options (void);
 extern void sparc_output_scratch_registers (FILE *);
 
diff --git a/gcc/config/sparc/sparc.c b/gcc/config/sparc/sparc.c
index 949c4734f9e3..619faad38766 100644
--- a/gcc/config/sparc/sparc.c
+++ b/gcc/config/sparc/sparc.c
@@ -627,6 +627,17 @@ sparc_handle_option (size_t code, const char *arg, int value ATTRIBUTE_UNUSED)
   return true;
 }
 
+/* Specify default optimizations.  */
+
+void
+sparc_optimization_options (int l ATTRIBUTE_UNUSED, int s ATTRIBUTE_UNUSED)
+{
+  /* Disable save slot sharing for call-clobbered registers by default.
+     The IRA sharing algorithm works on single registers only and this
+     pessimizes for double floating-point registers.  */
+  flag_ira_share_save_slots = 0;
+}
+
 /* Validate and override various options, and do some machine dependent
    initialization.  */
 
diff --git a/gcc/config/sparc/sparc.h b/gcc/config/sparc/sparc.h
index 470ca9f4efd0..488a3e6c23e0 100644
--- a/gcc/config/sparc/sparc.h
+++ b/gcc/config/sparc/sparc.h
@@ -501,7 +501,8 @@ extern enum cmodel sparc_cmodel;
 #define CAN_DEBUG_WITHOUT_FP
 
 /* Option handling.  */
-
+#define OPTIMIZATION_OPTIONS(LEVEL, SIZE) \
+  sparc_optimization_options ((LEVEL), (SIZE))
 #define OVERRIDE_OPTIONS  sparc_override_options ()
 
 /* Mask of all CPU selection flags.  */