* config/m68k/m68k.c (m68k_tune_flags): New.

	(override_options): Compute m68k_tune_flags.
	(MULL_COST, MULW_COST): Update for various variants of CFV2.
	* config/m68k/m68k.h (TUNE_MAC, TUNE_EMAC): New.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@136711 138bc75d-0d04-0410-961f-82ee72b054a4

3 files changed, 34 insertions, 5 deletions

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 36e39d6d26a..936c2ffda50 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,10 @@
+2008-06-12  Kazu Hirata  <kazu@codesourcery.com>
+
+	* config/m68k/m68k.c (m68k_tune_flags): New.
+	(override_options): Compute m68k_tune_flags.
+	(MULL_COST, MULW_COST): Update for various variants of CFV2.
+	* config/m68k/m68k.h (TUNE_MAC, TUNE_EMAC): New.
+
 2008-06-12  Jakub Jelinek  <jakub@redhat.com>
 
 	PR middle-end/36506
diff --git a/gcc/config/m68k/m68k.c b/gcc/config/m68k/m68k.c
index a1437d29c36..f95e37e9479 100644
--- a/gcc/config/m68k/m68k.c
+++ b/gcc/config/m68k/m68k.c
@@ -391,6 +391,9 @@ enum fpu_type m68k_fpu;
 /* The set of FL_* flags that apply to the target processor.  */
 unsigned int m68k_cpu_flags;
 
+/* The set of FL_* flags that apply to the processor to be tuned for.  */
+unsigned int m68k_tune_flags;
+
 /* Asm templates for calling or jumping to an arbitrary symbolic address,
    or NULL if such calls or jumps are not supported.  The address is held
    in operand 0.  */
@@ -571,13 +574,23 @@ override_options (void)
   /* Set the directly-usable versions of the -mcpu and -mtune settings.  */
   m68k_cpu = entry->device;
   if (m68k_tune_entry)
-    m68k_tune = m68k_tune_entry->microarch;
+    {
+      m68k_tune = m68k_tune_entry->microarch;
+      m68k_tune_flags = m68k_tune_entry->flags;
+    }
 #ifdef M68K_DEFAULT_TUNE
   else if (!m68k_cpu_entry && !m68k_arch_entry)
-    m68k_tune = M68K_DEFAULT_TUNE;
+    {
+      enum target_device dev;
+      dev = all_microarchs[M68K_DEFAULT_TUNE].device;
+      m68k_tune_flags = all_devices[dev]->flags;
+    }
 #endif
   else
-    m68k_tune = entry->microarch;
+    {
+      m68k_tune = entry->microarch;
+      m68k_tune_flags = entry->flags;
+    }
 
   /* Set the type of FPU.  */
   m68k_fpu = (!TARGET_HARD_FLOAT ? FPUTYPE_NONE
@@ -2226,13 +2239,18 @@ m68k_rtx_costs (rtx x, int code, int outer_code, int *total)
 #define MULL_COST				\
   (TUNE_68060 ? 2				\
    : TUNE_68040 ? 5				\
-   : TUNE_CFV2 ? 10				\
+   : (TUNE_CFV2 && TUNE_EMAC) ? 3		\
+   : (TUNE_CFV2 && TUNE_MAC) ? 4		\
+   : TUNE_CFV2 ? 8				\
    : TARGET_COLDFIRE ? 3 : 13)
 
 #define MULW_COST				\
   (TUNE_68060 ? 2				\
    : TUNE_68040 ? 3				\
-   : TUNE_68000_10 || TUNE_CFV2 ? 5		\
+   : TUNE_68000_10 ? 5				\
+   : (TUNE_CFV2 && TUNE_EMAC) ? 3		\
+   : (TUNE_CFV2 && TUNE_MAC) ? 2		\
+   : TUNE_CFV2 ? 8				\
    : TARGET_COLDFIRE ? 2 : 8)
 
 #define DIVW_COST				\
diff --git a/gcc/config/m68k/m68k.h b/gcc/config/m68k/m68k.h
index 7a68595a334..2bb725f0423 100644
--- a/gcc/config/m68k/m68k.h
+++ b/gcc/config/m68k/m68k.h
@@ -269,6 +269,9 @@ along with GCC; see the file COPYING3.  If not see
 #define TUNE_CFV3       (m68k_tune == ucfv3)
 #define TUNE_CFV4       (m68k_tune == ucfv4 || m68k_tune == ucfv4e)
 
+#define TUNE_MAC	((m68k_tune_flags & FL_CF_MAC) != 0)
+#define TUNE_EMAC	((m68k_tune_flags & FL_CF_EMAC) != 0)
+
 #define OVERRIDE_OPTIONS   override_options()
 
 /* These are meant to be redefined in the host dependent files */
@@ -1137,6 +1140,7 @@ extern enum target_device m68k_cpu;
 extern enum uarch_type m68k_tune;
 extern enum fpu_type m68k_fpu;
 extern unsigned int m68k_cpu_flags;
+extern unsigned int m68k_tune_flags;
 extern const char *m68k_symbolic_call;
 extern const char *m68k_symbolic_jump;