i386-protos.h (ix86_use_pseudo_pic_reg): New.

	* config/i386/i386-protos.h (ix86_use_pseudo_pic_reg): New.
	* config/i386/i386.h (PIC_OFFSET_TABLE_REGNUM): Simplify by
	using x86_use_pseudo_pic_reg.
	* config/i386/i386.c (ix86_conditional_register_usage): Remove
	support for fixed PIC register.
	(ix86_use_pseudo_pic_reg): Not static any more.


Co-Authored-By: Uros Bizjak <ubizjak@gmail.com>

From-SVN: r220242

gcc/ChangeLog

 2015-01-29  Ilya Enkovich  <ilya.enkovich@intel.com>
+	    Uros Bizjak  <ubizjak@gmail.com>
+
+	* config/i386/i386-protos.h (ix86_use_pseudo_pic_reg): New.
+	* config/i386/i386.h (PIC_OFFSET_TABLE_REGNUM): Simplify by
+	using x86_use_pseudo_pic_reg.
+	* config/i386/i386.c (ix86_conditional_register_usage): Remove
+	support for fixed PIC register.
+	(ix86_use_pseudo_pic_reg): Not static any more.
+
+2015-01-29  Ilya Enkovich  <ilya.enkovich@intel.com>
 
 	PR middle-end/64805
 	* ipa-inline.c (early_inliner): Rebuild IPA_REF_CHKP reference

gcc/config/i386/i386-protos.h

@@ -40,6 +40,8 @@ extern void ix86_output_addr_diff_elt (FILE *, int, int);
 extern enum calling_abi ix86_cfun_abi (void);
 extern enum calling_abi ix86_function_type_abi (const_tree);
 
+extern bool ix86_use_pseudo_pic_reg (void);
+
 extern void ix86_reset_previous_fndecl (void);
 
 #ifdef RTX_CODE

gcc/config/i386/i386.c

@@ -4384,12 +4384,6 @@ static void
 ix86_conditional_register_usage (void)
 {
   int i, c_mask;
-  unsigned int j;
-
-  /* The PIC register, if it exists, is fixed.  */
-  j = PIC_OFFSET_TABLE_REGNUM;
-  if (j != INVALID_REGNUM)
-    fixed_regs[j] = call_used_regs[j] = 1;
 
   /* For 32-bit targets, squash the REX registers.  */
   if (! TARGET_64BIT)
@@ -6265,7 +6259,7 @@ ix86_maybe_switch_abi (void)
 
 /* Return 1 if pseudo register should be created and used to hold
    GOT address for PIC code.  */
-static bool
+bool
 ix86_use_pseudo_pic_reg (void)
 {
   if ((TARGET_64BIT

gcc/config/i386/i386.h

@@ -1256,13 +1256,11 @@ extern const char *host_detect_local_cpu (int argc, const char **argv);
 #define REAL_PIC_OFFSET_TABLE_REGNUM  (TARGET_64BIT ? R15_REG : BX_REG)
 
 #define PIC_OFFSET_TABLE_REGNUM						\
-  ((TARGET_64BIT && (ix86_cmodel == CM_SMALL_PIC			\
-                     || TARGET_PECOFF))					\
-   || !flag_pic								\
-   ? INVALID_REGNUM							\
-   : pic_offset_table_rtx						\
-     ? INVALID_REGNUM							\
-     : REAL_PIC_OFFSET_TABLE_REGNUM)
+  (ix86_use_pseudo_pic_reg ()						\
+   ? (pic_offset_table_rtx						\
+      ? INVALID_REGNUM							\
+      : REAL_PIC_OFFSET_TABLE_REGNUM)					\
+   : INVALID_REGNUM)
 
 #define GOT_SYMBOL_NAME "_GLOBAL_OFFSET_TABLE_"