[PATCH] PowerPC: Reformat move insns to make them clearing, patch #4 of 5

[Michael Meissner]

These patches were previously posted in March as RFC's.  These patches just
reformat the floating point move insns to make it easier to figure out which
constraints and attributes are used for particular alternatives.

I have built the compiler on a little endian power8 system with all 5 patches
applied and it bootstraps without error.  There were no regressions in make
check output. Can I check these patches in?

This is patch #4 of 5.

2018-05-03  Michael Meissner  <meiss...@linux.vnet.ibm.com>

        * config/rs6000/rs6000.md (mov<mode>_softfloat64, FMOVE64):
        Reformat alternatives and attributes so it is easier to identify
        which constraints/attributes go with which instruction.

-- 
Michael Meissner, IBM
IBM, M/S 2506R, 550 King Street, Littleton, MA 01460-6245, USA
email: meiss...@linux.ibm.com, phone: +1 (978) 899-4797

Index: gcc/config/rs6000/rs6000.md
===================================================================
--- gcc/config/rs6000/rs6000.md (revision 259884)
+++ gcc/config/rs6000/rs6000.md (working copy)
@@ -7505,9 +7505,18 @@ (define_insn "*mov<mode>_hardfloat64"
    (set_attr "size" "64")
    (set_attr "length" "4")])
 
+;;           STD      LD       MR      MT<SPR> MF<SPR> G-const
+;;           H-const  F-const  Special
+
 (define_insn "*mov<mode>_softfloat64"
-  [(set (match_operand:FMOVE64 0 "nonimmediate_operand" "=Y,r,r,cl,r,r,r,r,*h")
-       (match_operand:FMOVE64 1 "input_operand" "r,Y,r,r,h,G,H,F,0"))]
+  [(set (match_operand:FMOVE64 0 "nonimmediate_operand"
+           "=Y,       r,      r,      cl,     r,      r,
+             r,       r,      *h")
+
+       (match_operand:FMOVE64 1 "input_operand"
+            "r,       Y,      r,      r,      h,      G,
+             H,       F,      0"))]
+
   "TARGET_POWERPC64 && TARGET_SOFT_FLOAT
    && (gpc_reg_operand (operands[0], <MODE>mode)
        || gpc_reg_operand (operands[1], <MODE>mode))"
@@ -7521,8 +7530,13 @@ (define_insn "*mov<mode>_softfloat64"
    #
    #
    nop"
-  [(set_attr "type" "store,load,*,mtjmpr,mfjmpr,*,*,*,*")
-   (set_attr "length" "4,4,4,4,4,8,12,16,4")])
+  [(set_attr "type"
+            "store,   load,   *,      mtjmpr, mfjmpr, *,
+             *,       *,      *")
+
+   (set_attr "length"
+            "4,       4,      4,      4,      4,      8,
+             12,      16,     4")])
 
 (define_expand "mov<mode>"
   [(set (match_operand:FMOVE128 0 "general_operand")