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aco/gfx11.7: don't use v_pack_b32_f16 in do_pack_2x16

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Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Georg Lehmann <dadschoorse@gmail.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/40917>
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Rhys Perry 2026-04-08 11:51:59 +01:00 • committed by Marge Bot
parent a1d9fec91f
commit ad5be681bd
1 changed files with 2 additions and 2 deletions
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4
src/amd/compiler/aco_lower_to_hw_instr.cpp
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@ -1627,11 +1627,11 @@ do_pack_2x16(lower_context* ctx, Builder& bld, Definition def, Operand lo, Opera
/* v_pack_b32_f16 can be used for bit exact copies if:
* - fp16 input denorms are enabled, otherwise they get flushed to zero
* - signalling input NaNs are kept, which is the case with IEEE_MODE=0
* GFX12+ always quiets signalling NaNs, IEEE_MODE was removed
* GFX11.7+ always quiets signalling NaNs, IEEE_MODE was removed
*/
bool can_use_pack = (ctx->block->fp_mode.denorm16_64 & fp_denorm_keep_in) &&
ctx->program->gfx_level >= GFX9 && can_use_vop3 &&
ctx->program->gfx_level < GFX12;
ctx->program->gfx_level < GFX11_7;
if (can_use_pack) {
Instruction* instr = bld.vop3(aco_opcode::v_pack_b32_f16, def, lo, hi);