From: Kazu Hirata <kazu@cs.umass.edu>
Date: Mon, 7 Apr 2003 10:17:24 +0000 (+0000)
Subject: h8300.md (*zero_extendqisi2_h8300hs): Always split.
X-Git-Tag: releases/gcc-3.4.0~7440
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=093b05b68f7b6c8bd35bf2dc50acfea95a418f39;p=thirdparty%2Fgcc.git

h8300.md (*zero_extendqisi2_h8300hs): Always split.

	* config/h8300/h8300.md (*zero_extendqisi2_h8300hs): Always
	split.
	(a splitter): Do zero-extension via HImode.

From-SVN: r65327
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index a9d111deaf1a..716f7d164541 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2003-04-07  Kazu Hirata  <kazu@cs.umass.edu>
+
+	* config/h8300/h8300.md (*zero_extendqisi2_h8300hs): Always
+	split.
+	(a splitter): Do zero-extension via HImode.
+
 2003-04-07  James A. Morrison <ja2morri@uwaterloo.ca>
 
 	* doc/invoke.texi: Eliminate extra white-space caused by
diff --git a/gcc/config/h8300/h8300.md b/gcc/config/h8300/h8300.md
index 6bc0cf0b7713..89014dd9e927 100644
--- a/gcc/config/h8300/h8300.md
+++ b/gcc/config/h8300/h8300.md
@@ -2084,11 +2084,7 @@
   [(set (match_operand:SI 0 "register_operand" "=r,r")
 	(zero_extend:SI (match_operand:QI 1 "general_operand_src" "0,g>")))]
   "TARGET_H8300H || TARGET_H8300S"
-  "@
-  extu.w	%T0\;extu.l	%S0
-  #"
-  [(set_attr "length" "4,12")
-   (set_attr "cc" "set_znv,set_znv")])
+  "#")
 
 (define_split
   [(set (match_operand:SI 0 "register_operand" "")
@@ -2098,9 +2094,12 @@
    && reload_completed" 
   [(set (match_dup 2)
 	(match_dup 1))
+   (set (match_dup 3)
+	(zero_extend:HI (match_dup 2)))
    (set (match_dup 0)
-	(zero_extend:SI (match_dup 2)))]
-  "operands[2] = gen_rtx_REG (QImode, REGNO (operands[0]));")
+	(zero_extend:SI (match_dup 3)))]
+  "operands[2] = gen_lowpart (QImode, operands[0]);
+   operands[3] = gen_lowpart (HImode, operands[0]);")
 
 (define_split
   [(set (match_operand:SI 0 "register_operand" "")