[llvm] [X86] Check for AMXTile (PR #136507)

[via llvm-commits]

https://github.com/AZero13 created https://github.com/llvm/llvm-project/pull/136507

Check for hasAMXTILE before operating, else return false.

>From 700ac565ee4f62e28efe28347bf5133e80a83d7c Mon Sep 17 00:00:00 2001
From: Rose <gfunni234 at gmail.com>
Date: Sun, 20 Apr 2025 17:12:53 -0400
Subject: [PATCH] [X86] Check for AMXTile

Check for hasAMXTILE before operating, else return false.
---
 llvm/lib/Target/X86/X86LowerTileCopy.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/llvm/lib/Target/X86/X86LowerTileCopy.cpp b/llvm/lib/Target/X86/X86LowerTileCopy.cpp
index fe13ebc6c7675..f4949c52f03ca 100644
--- a/llvm/lib/Target/X86/X86LowerTileCopy.cpp
+++ b/llvm/lib/Target/X86/X86LowerTileCopy.cpp
@@ -75,6 +75,8 @@ bool X86LowerTileCopy::runOnMachineFunction(MachineFunction &MF) {
     return false;
 
   const X86Subtarget &ST = MF.getSubtarget<X86Subtarget>();
+  if (!ST.hasAMXTILE())
+    return false;
   const X86InstrInfo *TII = ST.getInstrInfo();
   const TargetRegisterInfo *TRI = ST.getRegisterInfo();
   BitVector GR64Regs =