mep.c (mep_handle_option): Leave IVC2 control registers as fixed.

* config/mep/mep.c (mep_handle_option): Leave IVC2 control
registers as fixed.
(mep_interrupt_saved_reg): Save appropriate IVC2 control
registers.
* config/mep/mep-ivc2.cpu: Add VOLATILE to insns that make
unspecified accesses to control registers.
* config/mep/intrinsics.md: Regenerate.
* config/mep/intrinsics.h: Regenerate.
* config/mep/mep-intrin.h: Regenerate.

From-SVN: r149164

gcc/ChangeLog

+2009-07-01  DJ Delorie  <dj@redhat.com>
+
+	* config/mep/mep.c (mep_handle_option): Leave IVC2 control
+	registers as fixed.
+	(mep_interrupt_saved_reg): Save appropriate IVC2 control
+	registers.
+	* config/mep/mep-ivc2.cpu: Add VOLATILE to insns that make
+	unspecified accesses to control registers.
+	* config/mep/intrinsics.md: Regenerate.
+	* config/mep/intrinsics.h: Regenerate.
+	* config/mep/mep-intrin.h: Regenerate.
+	
 2009-07-01  Anthony Green  <green@moxielogic.com>
 
 	* config/moxie/moxie.c (moxie_expand_prologue): Use dec

gcc/config/mep/mep-intrin.h

@@ -5,14 +5,14 @@
 
 #ifdef WANT_GCC_DECLARATIONS
 #define FIRST_SHADOW_REGISTER 113
-#define LAST_SHADOW_REGISTER 140
+#define LAST_SHADOW_REGISTER 122
 #define FIXED_SHADOW_REGISTERS \
-  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1
 #define CALL_USED_SHADOW_REGISTERS FIXED_SHADOW_REGISTERS
 #define SHADOW_REG_ALLOC_ORDER \
-  113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140
+  113, 114, 115, 116, 117, 118, 119, 120, 121, 122
 #define SHADOW_REGISTER_NAMES \
-  "$shadow87", "$shadow107", "$shadow106", "$shadow105", "$shadow104", "$shadow111", "$shadow110", "$shadow109", "$shadow108", "$shadow84", "$shadow81", "$shadow86", "$shadow99", "$shadow98", "$shadow97", "$shadow96", "$shadow103", "$shadow102", "$shadow101", "$shadow100", "$shadow17", "$shadow40", "$shadow24", "$shadow23", "$shadow22", "$shadow21", "$shadow20", "$shadow18"
+  "$shadow84", "$shadow81", "$shadow17", "$shadow40", "$shadow24", "$shadow23", "$shadow22", "$shadow21", "$shadow20", "$shadow18"
 
 
 

gcc/config/mep/mep.c

@@ -2525,6 +2525,13 @@ mep_interrupt_saved_reg (int r)
   /* Functions we call might clobber these.  */
   if (call_used_regs[r] && !fixed_regs[r])
     return true;
+  /* Additional registers that need to be saved for IVC2.  */
+  if (TARGET_IVC2
+      && (r == FIRST_CCR_REGNO + 1
+	  || (r >= FIRST_CCR_REGNO + 8 && r <= FIRST_CCR_REGNO + 11)
+	  || (r >= FIRST_CCR_REGNO + 16 && r <= FIRST_CCR_REGNO + 31)))
+    return true;
+
   return false;
 }
 
@@ -7228,19 +7235,6 @@ mep_handle_option (size_t code,
       for (i=6; i<8; i++)
 	call_used_regs[i+48] = 0;
 
-      call_used_regs[FIRST_CCR_REGNO + 1] = 0;
-      fixed_regs[FIRST_CCR_REGNO + 1] = 0;
-      for (i=8; i<=11; i++)
-	{
-	  call_used_regs[FIRST_CCR_REGNO + i] = 0;
-	  fixed_regs[FIRST_CCR_REGNO + i] = 0;
-	}
-      for (i=16; i<=31; i++)
-	{
-	  call_used_regs[FIRST_CCR_REGNO + i] = 0;
-	  fixed_regs[FIRST_CCR_REGNO + i] = 0;
-	}
-
 #define RN(n,s) reg_names[FIRST_CCR_REGNO + n] = s
       RN (0, "$csar0");
       RN (1, "$cc");