[committed] Use partial_subreg_p in curr_insn_transform

Message ID 871sj6k4c4.fsf@linaro.org
State New
Headers show
Series
  • [committed] Use partial_subreg_p in curr_insn_transform
Related show

Commit Message

Richard Sandiford Jan. 3, 2018, 9:41 p.m.
Use partial_subreg_p in code that was added since the initial patch
that introduced this function.

Tested on aarch64-linux-gnu, x86_64-linux-gnu and powerpc64le-linux-gnu.
Also tested by comparing the before and after assembly output for at
least one target per CPU directory.  Committed as obvious.

Richard


2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
	* lra-constraints.c (curr_insn_transform): Use partial_subreg_p.

Patch

Index: gcc/lra-constraints.c
===================================================================
--- gcc/lra-constraints.c	2018-01-03 07:18:30.797822724 +0000
+++ gcc/lra-constraints.c	2018-01-03 09:34:11.747070247 +0000
@@ -4243,8 +4243,7 @@  curr_insn_transform (bool check_only_p)
 			      || (simplify_subreg_regno
 				  (ira_class_hard_regs[goal_alt[i]][0],
 				   GET_MODE (reg), byte, mode) >= 0)))
-		      || (GET_MODE_PRECISION (mode)
-			  < GET_MODE_PRECISION (GET_MODE (reg))
+		      || (partial_subreg_p (mode, GET_MODE (reg))
 			  && GET_MODE_SIZE (GET_MODE (reg)) <= UNITS_PER_WORD
 			  && WORD_REGISTER_OPERATIONS)))
 		{