From: Levy Hsu <admin@levyhsu.com>
Date: Tue, 3 Sep 2024 06:14:06 +0000 (+0930)
Subject: i386: Integrate BFmode for Enhanced Vectorization in ix86_preferred_simd_mode
X-Git-Tag: basepoints/gcc-16~6092
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=b851bce473d8e573b1b586c71d47e71067b4fa66;p=thirdparty%2Fgcc.git

i386: Integrate BFmode for Enhanced Vectorization in ix86_preferred_simd_mode

This change adds BFmode support to the ix86_preferred_simd_mode function
enhancing SIMD vectorization for BF16 operations. The update ensures
optimized usage of SIMD capabilities improving performance and aligning
vector sizes with processor capabilities.

gcc/ChangeLog:

	* config/i386/i386.cc (ix86_preferred_simd_mode): Add BFmode Support.
---

diff --git a/gcc/config/i386/i386.cc b/gcc/config/i386/i386.cc
index e8744fa77ea..c18a2647c2a 100644
--- a/gcc/config/i386/i386.cc
+++ b/gcc/config/i386/i386.cc
@@ -24574,6 +24574,14 @@ ix86_preferred_simd_mode (scalar_mode mode)
 	}
       return word_mode;
 
+    case E_BFmode:
+      if (TARGET_AVX512F && TARGET_EVEX512 && !TARGET_PREFER_AVX256)
+	return V32BFmode;
+      else if (TARGET_AVX && !TARGET_PREFER_AVX128)
+	return V16BFmode;
+      else
+	return V8BFmode;
+
     case E_SFmode:
       if (TARGET_AVX512F && TARGET_EVEX512 && !TARGET_PREFER_AVX256)
 	return V16SFmode;