From: Alan Modra <amodra@gmail.com>
Date: Thu, 27 Aug 2015 13:56:39 +0000 (+0930)
Subject: [RS6000] Correct constraints for ior<mode>_mask
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=353e462df7eea26f1df8343d8b8f92dfe97757dc;p=gcc.git

[RS6000] Correct constraints for ior<mode>_mask

ior<mode>_mask always splits to rtl matching rotl<mode>3_insert.  The
latter requires one of its input operands match the output, so let
reload/lra know the equivalent operand match must also occur for
ior<mode>_mask.

	PR target/67356
	* config/rs6000/rs6000.md (ior<mode>_mask): Use constraint "0"
	for operand 1.

From-SVN: r227260
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 0934bff5435..367a289b68a 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2015-08-27  Alan Modra  <amodra@gmail.com>
+
+	PR target/67356
+	* config/rs6000/rs6000.md (ior<mode>_mask): Use constraint "0"
+	for operand 1.
+
 2015-08-27  Richard Biener  <rguenther@suse.de>
 
 	* passes.c (rest_of_decl_compilation): Guard early_global_decl
diff --git a/gcc/config/rs6000/rs6000.md b/gcc/config/rs6000/rs6000.md
index 48abc266349..cfdb286a2cb 100644
--- a/gcc/config/rs6000/rs6000.md
+++ b/gcc/config/rs6000/rs6000.md
@@ -3683,7 +3683,7 @@
 ; an insert instruction, in many cases.
 (define_insn_and_split "*ior<mode>_mask"
   [(set (match_operand:GPR 0 "gpc_reg_operand" "=r")
-	(ior:GPR (match_operand:GPR 1 "gpc_reg_operand" "r")
+	(ior:GPR (match_operand:GPR 1 "gpc_reg_operand" "0")
 		 (match_operand:GPR 2 "const_int_operand" "n")))
    (clobber (match_scratch:GPR 3 "=r"))]
   "!logical_const_operand (operands[2], <MODE>mode)