caller-save.c (init_caller_save): Base temporary register numbers on…

caller-save.c (init_caller_save): Base temporary register numbers on LAST_VIRTUAL_REGISTER + 1 rather than...

gcc/
	* caller-save.c (init_caller_save): Base temporary register numbers
	on LAST_VIRTUAL_REGISTER + 1 rather than FIRST_PSEUDO_REGISTER.
	* cfgloopanal.c (init_set_costs): Likewise.
	* dojump.c (prefer_and_bit_test): Likewise.
	* expr.c (init_expr_target): Likewise.
	* ira.c (setup_prohibited_mode_move_regs): Likewise.
	* lower-subreg.c (init_lower_subreg): Likewise.
	* postreload.c (reload_cse_regs_1): Likewise.

From-SVN: r223688

gcc/ChangeLog

 2015-05-26  Richard Sandiford  <richard.sandiford@arm.com>
 
+	* caller-save.c (init_caller_save): Base temporary register numbers
+	on LAST_VIRTUAL_REGISTER + 1 rather than FIRST_PSEUDO_REGISTER.
+	* cfgloopanal.c (init_set_costs): Likewise.
+	* dojump.c (prefer_and_bit_test): Likewise.
+	* expr.c (init_expr_target): Likewise.
+	* ira.c (setup_prohibited_mode_move_regs): Likewise.
+	* lower-subreg.c (init_lower_subreg): Likewise.
+	* postreload.c (reload_cse_regs_1): Likewise.
+
+2015-05-26  Richard Sandiford  <richard.sandiford@arm.com>
+
 	* gensupport.h (compute_test_codes): Declare.
 	* gensupport.c (compute_predicate_codes): Rename to...
 	(compute_test_codes): ...this.  Generalize error message.

gcc/caller-save.c

@@ -286,7 +286,7 @@ init_caller_save (void)
      To avoid lots of unnecessary RTL allocation, we construct all the RTL
      once, then modify the memory and register operands in-place.  */
 
-  test_reg = gen_rtx_REG (word_mode, FIRST_PSEUDO_REGISTER);
+  test_reg = gen_rtx_REG (word_mode, LAST_VIRTUAL_REGISTER + 1);
   test_mem = gen_rtx_MEM (word_mode, address);
   savepat = gen_rtx_SET (test_mem, test_reg);
   restpat = gen_rtx_SET (test_reg, test_mem);

gcc/cfgloopanal.c

@@ -336,9 +336,9 @@ init_set_costs (void)
 {
   int speed;
   rtx_insn *seq;
-  rtx reg1 = gen_raw_REG (SImode, FIRST_PSEUDO_REGISTER);
-  rtx reg2 = gen_raw_REG (SImode, FIRST_PSEUDO_REGISTER + 1);
-  rtx addr = gen_raw_REG (Pmode, FIRST_PSEUDO_REGISTER + 2);
+  rtx reg1 = gen_raw_REG (SImode, LAST_VIRTUAL_REGISTER + 1);
+  rtx reg2 = gen_raw_REG (SImode, LAST_VIRTUAL_REGISTER + 2);
+  rtx addr = gen_raw_REG (Pmode, LAST_VIRTUAL_REGISTER + 3);
   rtx mem = validize_mem (gen_rtx_MEM (SImode, addr));
   unsigned i;
 

gcc/dojump.c

@@ -198,7 +198,7 @@ prefer_and_bit_test (machine_mode mode, int bitnum)
     {
       /* Set up rtxes for the two variations.  Use NULL as a placeholder
 	 for the BITNUM-based constants.  */
-      and_reg = gen_rtx_REG (mode, FIRST_PSEUDO_REGISTER);
+      and_reg = gen_rtx_REG (mode, LAST_VIRTUAL_REGISTER + 1);
       and_test = gen_rtx_AND (mode, and_reg, NULL);
       shift_test = gen_rtx_AND (mode, gen_rtx_ASHIFTRT (mode, and_reg, NULL),
 				const1_rtx);

gcc/expr.c

@@ -199,7 +199,7 @@ init_expr_target (void)
 
   /* A scratch register we can modify in-place below to avoid
      useless RTL allocations.  */
-  reg = gen_rtx_REG (word_mode, FIRST_PSEUDO_REGISTER);
+  reg = gen_rtx_REG (word_mode, LAST_VIRTUAL_REGISTER + 1);
 
   insn = rtx_alloc (INSN);
   pat = gen_rtx_SET (NULL_RTX, NULL_RTX);
@@ -249,7 +249,7 @@ init_expr_target (void)
 	  }
     }
 
-  mem = gen_rtx_MEM (VOIDmode, gen_raw_REG (Pmode, FIRST_PSEUDO_REGISTER));
+  mem = gen_rtx_MEM (VOIDmode, gen_raw_REG (Pmode, LAST_VIRTUAL_REGISTER + 1));
 
   for (mode = GET_CLASS_NARROWEST_MODE (MODE_FLOAT); mode != VOIDmode;
        mode = GET_MODE_WIDER_MODE (mode))

gcc/ira.c

@@ -1767,8 +1767,8 @@ setup_prohibited_mode_move_regs (void)
   if (ira_prohibited_mode_move_regs_initialized_p)
     return;
   ira_prohibited_mode_move_regs_initialized_p = true;
-  test_reg1 = gen_rtx_REG (word_mode, FIRST_PSEUDO_REGISTER);
-  test_reg2 = gen_rtx_REG (word_mode, FIRST_PSEUDO_REGISTER);
+  test_reg1 = gen_rtx_REG (word_mode, LAST_VIRTUAL_REGISTER + 1);
+  test_reg2 = gen_rtx_REG (word_mode, LAST_VIRTUAL_REGISTER + 2);
   move_pat = gen_rtx_SET (test_reg1, test_reg2);
   move_insn = gen_rtx_INSN (VOIDmode, 0, 0, 0, move_pat, 0, -1, 0);
   for (i = 0; i < NUM_MACHINE_MODES; i++)

gcc/lower-subreg.c

@@ -295,8 +295,8 @@ init_lower_subreg (void)
 
   twice_word_mode = GET_MODE_2XWIDER_MODE (word_mode);
 
-  rtxes.target = gen_rtx_REG (word_mode, FIRST_PSEUDO_REGISTER);
-  rtxes.source = gen_rtx_REG (word_mode, FIRST_PSEUDO_REGISTER + 1);
+  rtxes.target = gen_rtx_REG (word_mode, LAST_VIRTUAL_REGISTER + 1);
+  rtxes.source = gen_rtx_REG (word_mode, LAST_VIRTUAL_REGISTER + 2);
   rtxes.set = gen_rtx_SET (rtxes.target, rtxes.source);
   rtxes.zext = gen_rtx_ZERO_EXTEND (twice_word_mode, rtxes.source);
   rtxes.shift = gen_rtx_ASHIFT (twice_word_mode, rtxes.source, const0_rtx);

gcc/postreload.c

@@ -234,7 +234,7 @@ reload_cse_regs_1 (void)
   bool cfg_changed = false;
   basic_block bb;
   rtx_insn *insn;
-  rtx testreg = gen_rtx_REG (word_mode, FIRST_PSEUDO_REGISTER);
+  rtx testreg = gen_rtx_REG (word_mode, LAST_VIRTUAL_REGISTER + 1);
 
   cselib_init (CSELIB_RECORD_MEMORY);
   init_alias_analysis ();