From: Oleg Endo <olegendo@gcc.gnu.org>
Date: Thu, 21 May 2015 12:36:35 +0000 (+0000)
Subject: re PR target/54236 ([SH] Improve addc and subc insn utilization)
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=0daff5e0c87a619093f4718c0ec212b1b461bfde;p=gcc.git

re PR target/54236 ([SH] Improve addc and subc insn utilization)

gcc/
	PR target/54236
	* config/sh/sh.md (*round_int_even): Reject pattern if operands[0] and
	operands[1] are the same.

gcc/testsuite/
	PR target/54236
	* gcc.target/sh/pr54236-2.c: Fix typo in comment.

From-SVN: r223479
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 550d98c30eb..9218257629f 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2015-05-21  Oleg Endo  <olegendo@gcc.gnu.org>
+
+	PR target/54236
+	* config/sh/sh.md (*round_int_even): Reject pattern if operands[0] and
+	operands[1] are the same.
+
 2015-05-21  Ilya Enkovich  <enkovich.gnu@gmail.com>
 
 	PR middle-end/66221
diff --git a/gcc/config/sh/sh.md b/gcc/config/sh/sh.md
index 3b669928a20..2d95b9c1e22 100644
--- a/gcc/config/sh/sh.md
+++ b/gcc/config/sh/sh.md
@@ -2011,7 +2011,8 @@
 	(and:SI (plus:SI (match_operand:SI 1 "arith_reg_operand")
 			 (const_int 1))
 		(const_int -2)))]
-  "TARGET_SH1 && !TARGET_SH2A && can_create_pseudo_p ()"
+  "TARGET_SH1 && !TARGET_SH2A && can_create_pseudo_p ()
+   && !reg_overlap_mentioned_p (operands[0], operands[1])"
   "#"
   "&& 1"
   [(set (match_dup 0) (const_int -2))
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 81f6779da05..2cd1577e067 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2015-05-21  Oleg Endo  <olegendo@gcc.gnu.org>
+
+	PR target/54236
+	* gcc.target/sh/pr54236-2.c: Fix typo in comment.
+
 2015-05-21  Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>
 
 	PR target/65937
diff --git a/gcc/testsuite/gcc.target/sh/pr54236-2.c b/gcc/testsuite/gcc.target/sh/pr54236-2.c
index b94c2c0a5e2..c72afb92957 100644
--- a/gcc/testsuite/gcc.target/sh/pr54236-2.c
+++ b/gcc/testsuite/gcc.target/sh/pr54236-2.c
@@ -133,7 +133,7 @@ int
 test_016 (int a, int b, int c, int d)
 {
   // non-SH2A: 1x add #1, 1x mov #-2, 1x and
-  // SH2A: 1x add #1, 1x blcr #0
+  // SH2A: 1x add #1, 1x bclr #0
   return a + (a & 1);
 }