[llvm] [AMDGPU] enable D16Writes32BitVgpr for gfx12 (PR #165587)

[Brox Chen via llvm-commits]

https://github.com/broxigarchen created https://github.com/llvm/llvm-project/pull/165587

The issue in https://github.com/llvm/llvm-project/pull/157795 also producible for gfx12

>From cc125a61db4c2e56b02fc49152a858272a83500f Mon Sep 17 00:00:00 2001
From: guochen2 <guochen2 at amd.com>
Date: Tue, 28 Oct 2025 14:35:17 -0400
Subject: [PATCH] set D16 HW fix for gfx12

---
 llvm/lib/Target/AMDGPU/AMDGPU.td | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/llvm/lib/Target/AMDGPU/AMDGPU.td b/llvm/lib/Target/AMDGPU/AMDGPU.td
index 54d94b1f8682e..84121138a40df 100644
--- a/llvm/lib/Target/AMDGPU/AMDGPU.td
+++ b/llvm/lib/Target/AMDGPU/AMDGPU.td
@@ -1614,7 +1614,8 @@ def FeatureGFX12 : GCNSubtargetFeatureGeneration<"GFX12",
    FeatureDefaultComponentBroadcast, FeatureMaxHardClauseLength32,
    FeatureAtomicFMinFMaxF32GlobalInsts, FeatureAtomicFMinFMaxF32FlatInsts,
    FeatureIEEEMinimumMaximumInsts, FeatureMinimum3Maximum3F32,
-   FeatureMinimum3Maximum3F16, FeatureAgentScopeFineGrainedRemoteMemoryAtomics
+   FeatureMinimum3Maximum3F16, FeatureAgentScopeFineGrainedRemoteMemoryAtomics,
+   FeatureD16Writes32BitVgpr
   ]
 >;