From: Takayuki 'January June' Suwa <jjsuwa_sys3175@yahoo.co.jp>
Date: Sun, 24 Aug 2025 21:26:41 +0000 (+0900)
Subject: xtensa: Simplify "zero_extend[hq]isi2" insn patterns
X-Git-Tag: basepoints/gcc-17~5434
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=ee8f20d61dfaa5cf2af77e49e3ad78ccd4d98b36;p=thirdparty%2Fgcc.git

xtensa: Simplify "zero_extend[hq]isi2" insn patterns

gcc/ChangeLog:

	* config/xtensa/xtensa.md (mode_bits):
	New mode attribute.
	(zero_extend<mode>si2): Use the appropriate mode iterator and
	attribute to unify "zero_extend[hq]isi2" to this description.
---

diff --git a/gcc/config/xtensa/xtensa.md b/gcc/config/xtensa/xtensa.md
index f38fe6da8e4..4a02a6efe51 100644
--- a/gcc/config/xtensa/xtensa.md
+++ b/gcc/config/xtensa/xtensa.md
@@ -88,6 +88,7 @@
 ;; This mode iterator allows the HI and QI patterns to be defined from
 ;; the same template.
 (define_mode_iterator HQI [HI QI])
+(define_mode_attr mode_bits [(HI "16") (QI "8")])
 
 ;; This mode iterator allows the SI and HI patterns to be defined from
 ;; the same template.
@@ -944,24 +945,13 @@
 
 ;; Zero-extend instructions.
 
-(define_insn "zero_extendhisi2"
+(define_insn "zero_extend<mode>si2"
   [(set (match_operand:SI 0 "register_operand" "=a,a")
-	(zero_extend:SI (match_operand:HI 1 "nonimmed_operand" "r,U")))]
+	(zero_extend:SI (match_operand:HQI 1 "nonimmed_operand" "r,U")))]
   ""
   "@
-   extui\t%0, %1, 0, 16
-   %v1l16ui\t%0, %1"
-  [(set_attr "type"	"arith,load")
-   (set_attr "mode"	"SI")
-   (set_attr "length"	"3,3")])
-
-(define_insn "zero_extendqisi2"
-  [(set (match_operand:SI 0 "register_operand" "=a,a")
-	(zero_extend:SI (match_operand:QI 1 "nonimmed_operand" "r,U")))]
-  ""
-  "@
-   extui\t%0, %1, 0, 8
-   %v1l8ui\t%0, %1"
+   extui\t%0, %1, 0, <mode_bits>
+   %v1l<mode_bits>ui\t%0, %1"
   [(set_attr "type"	"arith,load")
    (set_attr "mode"	"SI")
    (set_attr "length"	"3,3")])