aco: fix creating v_madak if v_mad_f32 has two sgpr literals

Do not ignore that src1 can be a sgpr.

Closes: https://gitlab.freedesktop.org/mesa/mesa/issues/2435
Cc: <mesa-stable@lists.freedesktop.org>
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Rhys Perry <pendingchaos02@gmail.com>
Tested-by: Marge Bot <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3759>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3759>

diff --git a/src/amd/compiler/aco_optimizer.cpp b/src/amd/compiler/aco_optimizer.cpp
index 0b9fccc379e540f6c47f4de6d14350afc2fe71e8..5f2e5637b71a63b65a21401525871946785f405d 100644 (file)
--- a/src/amd/compiler/aco_optimizer.cpp
+++ b/src/amd/compiler/aco_optimizer.cpp
@@ -2604,7 +2604,7 @@ void select_instruction(opt_ctx &ctx, aco_ptr<Instruction>& instr)
                continue;
             /* if one of the operands is sgpr, we cannot add a literal somewhere else on pre-GFX10 or operands other than the 1st */
             if (instr->operands[i].getTemp().type() == RegType::sgpr && (i > 0 || ctx.program->chip_class < GFX10)) {
-               if (ctx.info[instr->operands[i].tempId()].is_literal()) {
+               if (!sgpr_used && ctx.info[instr->operands[i].tempId()].is_literal()) {
                   literal_uses = ctx.uses[instr->operands[i].tempId()];
                   literal_idx = i;
                } else {