[PATCH], V4, patch #10 [part of patch #4.2], Set prefixed length for 128-bit non-vector type

[Michael Meissner]

I was asked to split V4 patch #4.2 into smaller chuncks.  This patch is one of
8 patches that were broken out from 4.2.  Another patch from 4.2 to use
SIGNED_16BIT_OFFSET_EXTRA_P has already been committed.

This patch sets the prefixed and non-prefixed instruction sizes for the
non-vector 128-bit mode (PTImode, TDmode, IFmode, and optionally TFmode).

Using all of the patches in this series, I have bootstrapped the compiler on a
little endian power8 system and ran the regression tests.  In addition, I have
built the Spec 2006 and 2017 benchmark suites, for -mcpu=power8, -mcpu=power9,
and -mcpu=future, and all of the benchmarks build.  Can I check this into the
trunk?

2019-10-03  Michael Meissner  <meissner@linux.ibm.com>

	* config/rs6000/rs6000.md (mov<mode>_64bit_dm): Set prefixed and
	non-prefixed length.
	(movtd_64bit_nodm): Set prefixed and non-prefixed length.
	(mov<mode>_ppc64): Set prefixed and non-prefixed length.

Index: gcc/config/rs6000/rs6000.md
===================================================================
--- gcc/config/rs6000/rs6000.md	(revision 276534)
+++ gcc/config/rs6000/rs6000.md	(working copy)
@@ -7773,9 +7773,13 @@ (define_insn_and_split "*mov<mode>_64bit
   "#"
   "&& reload_completed"
   [(pc)]
-{ rs6000_split_multireg_move (operands[0], operands[1]); DONE; }
-  [(set_attr "length" "8")
-   (set_attr "isa" "*,*,*,*,*,*,*,*,p8v,p8v")])
+{
+  rs6000_split_multireg_move (operands[0], operands[1]);
+  DONE;
+}
+  [(set_attr "isa" "*,*,*,*,*,*,*,*,p8v,p8v")
+   (set_attr "non_prefixed_length" "8")
+   (set_attr "prefixed_length" "20")])
 
 (define_insn_and_split "*movtd_64bit_nodm"
   [(set (match_operand:TD 0 "nonimmediate_operand" "=m,d,d,Y,r,r")
@@ -7786,8 +7790,12 @@ (define_insn_and_split "*movtd_64bit_nod
   "#"
   "&& reload_completed"
   [(pc)]
-{ rs6000_split_multireg_move (operands[0], operands[1]); DONE; }
-  [(set_attr "length" "8,8,8,12,12,8")])
+{
+  rs6000_split_multireg_move (operands[0], operands[1]);
+  DONE;
+}
+  [(set_attr "non_prefixed_length" "8")
+   (set_attr "prefixed_length" "20")])
 
 (define_insn_and_split "*mov<mode>_32bit"
   [(set (match_operand:FMOVE128_FPR 0 "nonimmediate_operand" "=m,d,d,d,Y,r,r")
@@ -8984,7 +8992,8 @@ (define_insn "*mov<mode>_ppc64"
   return rs6000_output_move_128bit (operands);
 }
   [(set_attr "type" "store,store,load,load,*,*")
-   (set_attr "length" "8")])
+   (set_attr "prefixed_length" "20")
+   (set_attr "non_prefixed_length" "8")])
 
 (define_split
   [(set (match_operand:TI2 0 "int_reg_operand")

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