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-rw-r--r--src/amd/compiler/aco_optimizer.cpp12
1 files changed, 11 insertions, 1 deletions
diff --git a/src/amd/compiler/aco_optimizer.cpp b/src/amd/compiler/aco_optimizer.cpp
index fe05634c280..a142ccba9a1 100644
--- a/src/amd/compiler/aco_optimizer.cpp
+++ b/src/amd/compiler/aco_optimizer.cpp
@@ -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;
}