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aco: don't apply sgprs/constants to read/write lane instructions 

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Daniel Schürmann <daniel@schuermann.dev>
This commit is contained in:
Rhys Perry 2019-09-24 13:32:56 +01:00
parent 599d634c2c
commit b37857bcea
1 changed files with 11 additions and 1 deletions
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12
src/amd/compiler/aco_optimizer.cpp
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@ -412,6 +412,13 @@ bool can_use_VOP3(aco_ptr<Instruction>& instr)
instr->opcode != aco_opcode::v_madak_f16;
}
bool can_apply_sgprs(aco_ptr<Instruction>& instr)
{
return instr->opcode != aco_opcode::v_readfirstlane_b32 &&
instr->opcode != aco_opcode::v_readlane_b32 &&
instr->opcode != aco_opcode::v_writelane_b32;
}
void to_VOP3(opt_ctx& ctx, aco_ptr<Instruction>& instr)
{
if (instr->isVOP3())
@ -452,6 +459,8 @@ bool can_accept_constant(aco_ptr<Instruction>& instr, unsigned operand)
case aco_opcode::p_wqm:
case aco_opcode::p_extract_vector:
case aco_opcode::p_split_vector:
case aco_opcode::v_readlane_b32:
case aco_opcode::v_readfirstlane_b32:
return operand != 0;
default:
if ((instr->format == Format::MUBUF ||
@ -1970,7 +1979,8 @@ void combine_instruction(opt_ctx &ctx, aco_ptr<Instruction>& instr)
return;
if (instr->isVALU()) {
apply_sgprs(ctx, instr);
if (can_apply_sgprs(instr))
apply_sgprs(ctx, instr);
if (apply_omod_clamp(ctx, instr))
return;
}