From: amodra <amodra@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Thu, 27 Aug 2015 13:56:39 +0000 (+0000)
Subject: [RS6000] Correct constraints for ior<mode>_mask
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=e76fe21e25c043fc93e05cab70f0d83920d1e6b7;p=thirdparty%2Fgcc.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.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@227260 138bc75d-0d04-0410-961f-82ee72b054a4
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 0934bff54359..367a289b68a9 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 48abc2663495..cfdb286a2cba 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)