From 6610905b4390d835db468947ee3896050a7ffc06 Mon Sep 17 00:00:00 2001 From: Georg Lehmann Date: Fri, 31 Oct 2025 13:10:34 +0100 Subject: [PATCH] aco: allow v_fma_mix with denorms for gfx9 chips where it's fused MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Only unfused mad unconditionally flushes denorms. Reviewed-by: Daniel Schürmann Part-of: --- src/amd/compiler/aco_optimizer.cpp | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/src/amd/compiler/aco_optimizer.cpp b/src/amd/compiler/aco_optimizer.cpp index 3653216cca9..faa772317fe 100644 --- a/src/amd/compiler/aco_optimizer.cpp +++ b/src/amd/compiler/aco_optimizer.cpp @@ -865,8 +865,8 @@ alu_opt_info_is_valid(opt_ctx& ctx, alu_opt_info& info) if (ctx.program->gfx_level < GFX9) return false; - /* GFX9 v_mad_mix* always flushes 16/32-bit denormal inputs/outputs */ - if (ctx.program->gfx_level == GFX9 && ctx.fp_mode.denorm) + /* unfused v_mad_mix* always flushes 16/32-bit denormal inputs/outputs */ + if (!ctx.program->dev.fused_mad_mix && ctx.fp_mode.denorm) return false; switch (info.opcode) { @@ -4357,8 +4357,8 @@ can_use_mad_mix(opt_ctx& ctx, aco_ptr& instr) if (ctx.program->gfx_level < GFX9) return false; - /* GFX9 v_mad_mix* always flushes 16/32-bit denormal inputs/outputs */ - if (ctx.program->gfx_level == GFX9 && ctx.fp_mode.denorm) + /* unfused v_mad_mix* always flushes 16/32-bit denormal inputs/outputs */ + if (!ctx.program->dev.fused_mad_mix && ctx.fp_mode.denorm) return false; if (instr->valu().omod)