From: Oleg Endo <olegendo@gcc.gnu.org>
Date: Fri, 6 May 2016 10:29:33 +0000 (+0000)
Subject: sh.md (*cmpeqsi_t): Remove combine insn pattern and similar corresponding combine... 
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=74d5be8c5779288c38cfc4fde48feb7ce4cf0071;p=gcc.git

sh.md (*cmpeqsi_t): Remove combine insn pattern and similar corresponding combine split pattern.

gcc/
	* config/sh/sh.md (*cmpeqsi_t): Remove combine insn pattern and similar
	corresponding combine split pattern.

From-SVN: r235956
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 84bf0c095cf..50a47af4d04 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2016-05-06  Oleg Endo  <olegendo@gcc.gnu.org>
+
+	* config/sh/sh.md (*cmpeqsi_t): Remove combine insn pattern and similar
+	corresponding combine split pattern.
+
 2016-05-06  Oleg Endo  <olegendo@gcc.gnu.org>
 
 	PR target/58219
diff --git a/gcc/config/sh/sh.md b/gcc/config/sh/sh.md
index 7b0e746a051..2d0ca2feb8c 100644
--- a/gcc/config/sh/sh.md
+++ b/gcc/config/sh/sh.md
@@ -909,22 +909,6 @@
   FAIL;
 })
 
-;; FIXME: For some reason, on SH4A and SH2A combine fails to simplify this
-;; pattern by itself.  What this actually does is:
-;;	x == 0: (1 >> 0-0) & 1 = 1
-;;	x != 0: (1 >> 0-x) & 1 = 0
-;; Without this the test pr51244-8.c fails on SH2A and SH4A.
-(define_insn_and_split "*cmpeqsi_t"
-  [(set (reg:SI T_REG)
-	(and:SI (lshiftrt:SI
-		  (const_int 1)
-		  (neg:SI (match_operand:SI 0 "arith_reg_operand" "r")))
-		(const_int 1)))]
-  "TARGET_SH1"
-  "#"
-  "&& 1"
-  [(set (reg:SI T_REG) (eq:SI (match_dup 0) (const_int 0)))])
-
 (define_insn "cmpgtsi_t"
   [(set (reg:SI T_REG)
 	(gt:SI (match_operand:SI 0 "arith_reg_operand" "r,r")
@@ -1229,29 +1213,6 @@
 			   (label_ref (match_dup 2))
 			   (pc)))])
 
-;; FIXME: Similar to the *cmpeqsi_t pattern above, for some reason, on SH4A
-;; and SH2A combine fails to simplify this pattern by itself.
-;; What this actually does is:
-;;	x == 0: (1 >> 0-0) & 1 = 1
-;;	x != 0: (1 >> 0-x) & 1 = 0
-;; Without this the test pr51244-8.c fails on SH2A and SH4A.
-(define_split
-  [(set (pc)
-	(if_then_else
-	  (eq (and:SI (lshiftrt:SI
-			(const_int 1)
-			(neg:SI (match_operand:SI 0 "arith_reg_operand" "")))
-		      (const_int 1))
-	      (const_int 0))
-	  (label_ref (match_operand 2))
-	  (pc)))
-   (clobber (reg:SI T_REG))]
-  "TARGET_SH1"
-  [(set (reg:SI T_REG) (eq:SI (match_dup 0) (const_int 0)))
-   (set (pc) (if_then_else (eq (reg:SI T_REG) (const_int 0))
-			   (label_ref (match_dup 2))
-			   (pc)))])
-
 ;; FIXME: These don't seem to have any effect on the generated cbranch code
 ;;	  anymore, but only on some register allocation choices.
 (define_split