[gcc r15-3461] i386: Integrate BFmode for Enhanced Vectorization in ix86_preferred_simd_mode

[Levy Hsu via Gcc-cvs]

https://gcc.gnu.org/g:b851bce473d8e573b1b586c71d47e71067b4fa66

commit r15-3461-gb851bce473d8e573b1b586c71d47e71067b4fa66
Author: Levy Hsu <ad...@levyhsu.com>
Date:   Tue Sep 3 15:44:06 2024 +0930

    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:
---
 gcc/config/i386/i386.cc | 8 ++++++++
 1 file changed, 8 insertions(+)

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;