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Merge pull request #4090 from MerryMage/macrojit-bugs 

macro_jit_x64: Optimization correctness
This commit is contained in:
bunnei 2020-06-18 22:28:17 -04:00 committed by GitHub
parent de644d506f c409722435
commit 5a092fb61e
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1 changed files with 5 additions and 2 deletions
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7
src/video_core/macro/macro_jit_x64.cpp
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@ -56,11 +56,13 @@ void MacroJITx64Impl::Compile_ALU(Macro::Opcode opcode) {
const bool valid_operation = !is_a_zero && !is_b_zero; const bool valid_operation = !is_a_zero && !is_b_zero;
const bool is_move_operation = !is_a_zero && is_b_zero; const bool is_move_operation = !is_a_zero && is_b_zero;
const bool has_zero_register = is_a_zero || is_b_zero; const bool has_zero_register = is_a_zero || is_b_zero;
const bool no_zero_reg_skip = opcode.alu_operation == Macro::ALUOperation::AddWithCarry ||
opcode.alu_operation == Macro::ALUOperation::SubtractWithBorrow;
Xbyak::Reg32 src_a; Xbyak::Reg32 src_a;
Xbyak::Reg32 src_b; Xbyak::Reg32 src_b;
if (!optimizer.zero_reg_skip) { if (!optimizer.zero_reg_skip || no_zero_reg_skip) {
src_a = Compile_GetRegister(opcode.src_a, RESULT); src_a = Compile_GetRegister(opcode.src_a, RESULT);
src_b = Compile_GetRegister(opcode.src_b, eax); src_b = Compile_GetRegister(opcode.src_b, eax);
} else { } else {
@ -183,7 +185,8 @@ void MacroJITx64Impl::Compile_AddImmediate(Macro::Opcode opcode) {
opcode.result_operation == Macro::ResultOperation::MoveAndSetMethod) { opcode.result_operation == Macro::ResultOperation::MoveAndSetMethod) {
if (next_opcode.has_value()) { if (next_opcode.has_value()) {
const auto next = *next_opcode; const auto next = *next_opcode;
if (next.result_operation == Macro::ResultOperation::MoveAndSetMethod) { if (next.result_operation == Macro::ResultOperation::MoveAndSetMethod &&
opcode.dst == next.dst) {
return; return;
} }
} }