rs6000: wl -> d+p6

	* config/rs6000/constraints.md (define_register_constraint "wl"):
	Delete.
	* config/rs6000/rs6000.h (enum r6000_reg_class_enum): Delete
	RS6000_CONSTRAINT_wl.
	* config/rs6000/rs6000.c (rs6000_debug_reg_global): Adjust.
	(rs6000_init_hard_regno_mode_ok): Adjust.
	* config/rs6000/rs6000.md: Replace "wl" constraint by "d" with "p6".
	* doc/md.texi (Machine Constraints): Adjust.

From-SVN: r271487

gcc/ChangeLog

 2019-05-21  Segher Boessenkool  <segher@kernel.crashing.org>
 
+	* config/rs6000/constraints.md (define_register_constraint "wl"):
+	Delete.
+	* config/rs6000/rs6000.h (enum r6000_reg_class_enum): Delete
+	RS6000_CONSTRAINT_wl.
+	* config/rs6000/rs6000.c (rs6000_debug_reg_global): Adjust.
+	(rs6000_init_hard_regno_mode_ok): Adjust.
+	* config/rs6000/rs6000.md: Replace "wl" constraint by "d" with "p6".
+	* doc/md.texi (Machine Constraints): Adjust.
+
+2019-05-21  Segher Boessenkool  <segher@kernel.crashing.org>
+
 	* config/rs6000/constraints.md (define_register_constraint "wm"):
 	Delete.
 	* config/rs6000/rs6000.h (enum r6000_reg_class_enum): Delete

gcc/config/rs6000/constraints.md

@@ -74,9 +74,6 @@
 (define_register_constraint "wi" "rs6000_constraints[RS6000_CONSTRAINT_wi]"
   "FP or VSX register to hold 64-bit integers for VSX insns or NO_REGS.")
 
-(define_register_constraint "wl" "rs6000_constraints[RS6000_CONSTRAINT_wl]"
-  "Floating point register if the LFIWAX instruction is enabled or NO_REGS.")
-
 ;; NO_REGs register constraint, used to merge mov{sd,sf}, since movsd can use
 ;; direct move directly, and movsf can't to move between the register sets.
 ;; There is a mode_attr that resolves to wa for SDmode and wn for SFmode

gcc/config/rs6000/rs6000.c

@@ -2513,7 +2513,6 @@ rs6000_debug_reg_global (void)
 	   "wf reg_class = %s\n"
 	   "wg reg_class = %s\n"
 	   "wi reg_class = %s\n"
-	   "wl reg_class = %s\n"
 	   "wp reg_class = %s\n"
 	   "wq reg_class = %s\n"
 	   "wr reg_class = %s\n"
@@ -2534,7 +2533,6 @@ rs6000_debug_reg_global (void)
 	   reg_class_names[rs6000_constraints[RS6000_CONSTRAINT_wf]],
 	   reg_class_names[rs6000_constraints[RS6000_CONSTRAINT_wg]],
 	   reg_class_names[rs6000_constraints[RS6000_CONSTRAINT_wi]],
-	   reg_class_names[rs6000_constraints[RS6000_CONSTRAINT_wl]],
 	   reg_class_names[rs6000_constraints[RS6000_CONSTRAINT_wp]],
 	   reg_class_names[rs6000_constraints[RS6000_CONSTRAINT_wq]],
 	   reg_class_names[rs6000_constraints[RS6000_CONSTRAINT_wr]],
@@ -3156,7 +3154,6 @@ rs6000_init_hard_regno_mode_ok (bool global_init_p)
 	wf - Preferred register class for V4SFmode.
 	wg - Float register for power6x move insns.
 	wi - FP or VSX register to hold 64-bit integers for VSX insns.
-	wl - Float register if we can do 32-bit signed int loads.
 	wn - always NO_REGS.
 	wr - GPR if 64-bit mode is permitted.
 	ws - Register class to do ISA 2.06 DF operations.
@@ -3191,9 +3188,6 @@ rs6000_init_hard_regno_mode_ok (bool global_init_p)
   if (TARGET_MFPGPR)						/* DFmode  */
     rs6000_constraints[RS6000_CONSTRAINT_wg] = FLOAT_REGS;
 
-  if (TARGET_LFIWAX)
-    rs6000_constraints[RS6000_CONSTRAINT_wl] = FLOAT_REGS;	/* DImode  */
-
   if (TARGET_POWERPC64)
     {
       rs6000_constraints[RS6000_CONSTRAINT_wr] = GENERAL_REGS;

gcc/config/rs6000/rs6000.h

@@ -1254,7 +1254,6 @@ enum r6000_reg_class_enum {
   RS6000_CONSTRAINT_wf,		/* VSX register for V4SF */
   RS6000_CONSTRAINT_wg,		/* FPR register for -mmfpgpr */
   RS6000_CONSTRAINT_wi,		/* FPR/VSX register to hold DImode */
-  RS6000_CONSTRAINT_wl,		/* FPR register for LFIWAX */
   RS6000_CONSTRAINT_wp,		/* VSX reg for IEEE 128-bit fp TFmode. */
   RS6000_CONSTRAINT_wq,		/* VSX reg for IEEE 128-bit fp KFmode.  */
   RS6000_CONSTRAINT_wr,		/* GPR register if 64-bit  */

gcc/config/rs6000/rs6000.md

@@ -1019,7 +1019,7 @@
 
 (define_insn "extendsi<mode>2"
   [(set (match_operand:EXTSI 0 "gpc_reg_operand"
-		     "=r, r,   wl,    wa,    wi,    v,      v,     wr")
+		     "=r, r,   d,     wa,    wi,    v,      v,     wr")
 	(sign_extend:EXTSI (match_operand:SI 1 "lwa_operand"
 		     "YZ, r,   Z,     Z,     r,     v,      v,     ?wa")))]
   ""
@@ -1035,7 +1035,7 @@
   [(set_attr "type" "load,exts,fpload,fpload,mffgpr,vecexts,vecperm,mftgpr")
    (set_attr "sign_extend" "yes")
    (set_attr "length" "4,4,4,4,4,4,8,8")
-   (set_attr "isa" "*,*,*,p8v,p8v,p9v,p8v,p8v")])
+   (set_attr "isa" "*,*,p6,p8v,p8v,p9v,p8v,p8v")])
 
 (define_split
   [(set (match_operand:EXTSI 0 "int_reg_operand")

gcc/doc/md.texi

@@ -3198,7 +3198,7 @@ Any VSX register if the @option{-mvsx} option was used or NO_REGS.
 
 When using any of the register constraints (@code{wa}, @code{wd},
 @code{wf}, @code{wg}, @code{wi},
-@code{wl}, @code{wp}, @code{wq}, @code{ws},
+@code{wp}, @code{wq}, @code{ws},
 @code{wt}, @code{wv}, or @code{ww})
 that take VSX registers, you must use @code{%x<n>} in the template so
 that the correct register is used.  Otherwise the register number
@@ -3262,9 +3262,6 @@ If @option{-mmfpgpr} was used, a floating point register or NO_REGS.
 @item wi
 FP or VSX register to hold 64-bit integers for VSX insns or NO_REGS.
 
-@item wl
-Floating point register if the LFIWAX instruction is enabled or NO_REGS.
-
 @item wn
 No register (NO_REGS).