From: Uros Bizjak <ubizjak@gmail.com>
Date: Mon, 20 Jan 2025 15:19:43 +0000 (+0100)
Subject: i386: Disable SImode/DImode moves from/to mask regs without avx512bw [PR118067]
X-Git-Tag: releases/gcc-12.5.0~341
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9a1efd1ee2509abb93878bd911d8c07143b10e33;p=thirdparty%2Fgcc.git

i386: Disable SImode/DImode moves from/to mask regs without avx512bw [PR118067]

SImode and DImode moves from/to mask registers are valid only with AVX512BW,
so mark relevant alternatives in *movsi_internal and *movdi_internal as such.

	PR target/118067

gcc/ChangeLog:

	* config/i386/i386.md (*movdi_internal):
	Disable alternatives from/to mask registers without AVX512BW.
	(*movsi_internal): Ditto.
---

diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md
index 4142d7fec4d..911edddaec9 100644
--- a/gcc/config/i386/i386.md
+++ b/gcc/config/i386/i386.md
@@ -2251,12 +2251,16 @@
   [(set (attr "isa")
      (cond [(eq_attr "alternative" "0,1,17,18")
 	      (const_string "nox64")
-	    (eq_attr "alternative" "2,3,4,5,10,11,23,25")
+	    (eq_attr "alternative" "2,3,4,5,10,11")
 	      (const_string "x64")
 	    (eq_attr "alternative" "19,20")
 	      (const_string "x64_sse2")
 	    (eq_attr "alternative" "21,22")
 	      (const_string "sse2")
+	    (eq_attr "alternative" "23,25")
+	      (const_string "x64_avx512bw")
+	    (eq_attr "alternative" "24,26,27")
+	      (const_string "avx512bw")
 	   ]
 	   (const_string "*")))
    (set (attr "type")
@@ -2467,6 +2471,8 @@
   [(set (attr "isa")
      (cond [(eq_attr "alternative" "12,13")
 	      (const_string "sse2")
+	    (eq_attr "alternative" "14,15,16,17")
+	      (const_string "avx512bw")
 	   ]
 	   (const_string "*")))
    (set (attr "type")