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Use 'dst' as the CBRANCH condition register

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See issue #43
This commit is contained in:
tevador
2019-05-21 08:37:36 +02:00
parent 1276d67d2f
commit 8a5ead5ce3
10 changed files with 139 additions and 174 deletions
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46
src/assembly_generator_x86.cpp
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@@ -53,8 +53,7 @@ namespace randomx {
void AssemblyGeneratorX86::generateProgram(Program& prog) {
for (unsigned i = 0; i < RegistersCount; ++i) {
registerUsage[i].lastUsed = -1;
registerUsage[i].count = 0;
registerUsage[i] = -1;
}
asmCode.str(std::string()); //clear
for (unsigned i = 0; i < prog.getSize(); ++i) {
@@ -270,7 +269,7 @@ namespace randomx {
}
void AssemblyGeneratorX86::h_IADD_RS(Instruction& instr, int i) {
registerUsage[instr.dst].lastUsed = i;
registerUsage[instr.dst] = i;
if(instr.dst == RegisterNeedsDisplacement)
asmCode << "\tlea " << regR[instr.dst] << ", [" << regR[instr.dst] << "+" << regR[instr.src] << "*" << (1 << (instr.getModShift())) << std::showpos << (int32_t)instr.getImm32() << std::noshowpos << "]" << std::endl;
else
@@ -279,7 +278,7 @@ namespace randomx {
}
void AssemblyGeneratorX86::h_IADD_M(Instruction& instr, int i) {
registerUsage[instr.dst].lastUsed = i;
registerUsage[instr.dst] = i;
if (instr.src != instr.dst) {
genAddressReg(instr);
asmCode << "\tadd " << regR[instr.dst] << ", qword ptr [" << regScratchpadAddr << "+rax]" << std::endl;
@@ -291,7 +290,7 @@ namespace randomx {
}
void AssemblyGeneratorX86::h_ISUB_R(Instruction& instr, int i) {
registerUsage[instr.dst].lastUsed = i;
registerUsage[instr.dst] = i;
if (instr.src != instr.dst) {
asmCode << "\tsub " << regR[instr.dst] << ", " << regR[instr.src] << std::endl;
}
@@ -302,7 +301,7 @@ namespace randomx {
}
void AssemblyGeneratorX86::h_ISUB_M(Instruction& instr, int i) {
registerUsage[instr.dst].lastUsed = i;
registerUsage[instr.dst] = i;
if (instr.src != instr.dst) {
genAddressReg(instr);
asmCode << "\tsub " << regR[instr.dst] << ", qword ptr [" << regScratchpadAddr << "+rax]" << std::endl;
@@ -314,7 +313,7 @@ namespace randomx {
}
void AssemblyGeneratorX86::h_IMUL_R(Instruction& instr, int i) {
registerUsage[instr.dst].lastUsed = i;
registerUsage[instr.dst] = i;
if (instr.src != instr.dst) {
asmCode << "\timul " << regR[instr.dst] << ", " << regR[instr.src] << std::endl;
}
@@ -325,7 +324,7 @@ namespace randomx {
}
void AssemblyGeneratorX86::h_IMUL_M(Instruction& instr, int i) {
registerUsage[instr.dst].lastUsed = i;
registerUsage[instr.dst] = i;
if (instr.src != instr.dst) {
genAddressReg(instr);
asmCode << "\timul " << regR[instr.dst] << ", qword ptr [" << regScratchpadAddr << "+rax]" << std::endl;
@@ -337,7 +336,7 @@ namespace randomx {
}
void AssemblyGeneratorX86::h_IMULH_R(Instruction& instr, int i) {
registerUsage[instr.dst].lastUsed = i;
registerUsage[instr.dst] = i;
asmCode << "\tmov rax, " << regR[instr.dst] << std::endl;
asmCode << "\tmul " << regR[instr.src] << std::endl;
asmCode << "\tmov " << regR[instr.dst] << ", rdx" << std::endl;
@@ -345,7 +344,7 @@ namespace randomx {
}
void AssemblyGeneratorX86::h_IMULH_M(Instruction& instr, int i) {
registerUsage[instr.dst].lastUsed = i;
registerUsage[instr.dst] = i;
if (instr.src != instr.dst) {
genAddressReg(instr, "ecx");
asmCode << "\tmov rax, " << regR[instr.dst] << std::endl;
@@ -360,7 +359,7 @@ namespace randomx {
}
void AssemblyGeneratorX86::h_ISMULH_R(Instruction& instr, int i) {
registerUsage[instr.dst].lastUsed = i;
registerUsage[instr.dst] = i;
asmCode << "\tmov rax, " << regR[instr.dst] << std::endl;
asmCode << "\timul " << regR[instr.src] << std::endl;
asmCode << "\tmov " << regR[instr.dst] << ", rdx" << std::endl;
@@ -368,7 +367,7 @@ namespace randomx {
}
void AssemblyGeneratorX86::h_ISMULH_M(Instruction& instr, int i) {
registerUsage[instr.dst].lastUsed = i;
registerUsage[instr.dst] = i;
if (instr.src != instr.dst) {
genAddressReg(instr, "ecx");
asmCode << "\tmov rax, " << regR[instr.dst] << std::endl;
@@ -383,13 +382,13 @@ namespace randomx {
}
void AssemblyGeneratorX86::h_INEG_R(Instruction& instr, int i) {
registerUsage[instr.dst].lastUsed = i;
registerUsage[instr.dst] = i;
asmCode << "\tneg " << regR[instr.dst] << std::endl;
traceint(instr);
}
void AssemblyGeneratorX86::h_IXOR_R(Instruction& instr, int i) {
registerUsage[instr.dst].lastUsed = i;
registerUsage[instr.dst] = i;
if (instr.src != instr.dst) {
asmCode << "\txor " << regR[instr.dst] << ", " << regR[instr.src] << std::endl;
}
@@ -400,7 +399,7 @@ namespace randomx {
}
void AssemblyGeneratorX86::h_IXOR_M(Instruction& instr, int i) {
registerUsage[instr.dst].lastUsed = i;
registerUsage[instr.dst] = i;
if (instr.src != instr.dst) {
genAddressReg(instr);
asmCode << "\txor " << regR[instr.dst] << ", qword ptr [" << regScratchpadAddr << "+rax]" << std::endl;
@@ -412,7 +411,7 @@ namespace randomx {
}
void AssemblyGeneratorX86::h_IROR_R(Instruction& instr, int i) {
registerUsage[instr.dst].lastUsed = i;
registerUsage[instr.dst] = i;
if (instr.src != instr.dst) {
asmCode << "\tmov ecx, " << regR32[instr.src] << std::endl;
asmCode << "\tror " << regR[instr.dst] << ", cl" << std::endl;
@@ -424,7 +423,7 @@ namespace randomx {
}
void AssemblyGeneratorX86::h_IROL_R(Instruction& instr, int i) {
registerUsage[instr.dst].lastUsed = i;
registerUsage[instr.dst] = i;
if (instr.src != instr.dst) {
asmCode << "\tmov ecx, " << regR32[instr.src] << std::endl;
asmCode << "\trol " << regR[instr.dst] << ", cl" << std::endl;
@@ -438,7 +437,7 @@ namespace randomx {
void AssemblyGeneratorX86::h_IMUL_RCP(Instruction& instr, int i) {
uint64_t divisor = instr.getImm32();
if (!isPowerOf2(divisor)) {
registerUsage[instr.dst].lastUsed = i;
registerUsage[instr.dst] = i;
asmCode << "\tmov rax, " << randomx_reciprocal(divisor) << std::endl;
asmCode << "\timul " << regR[instr.dst] << ", rax" << std::endl;
traceint(instr);
@@ -450,8 +449,8 @@ namespace randomx {
void AssemblyGeneratorX86::h_ISWAP_R(Instruction& instr, int i) {
if (instr.src != instr.dst) {
registerUsage[instr.dst].lastUsed = i;
registerUsage[instr.src].lastUsed = i;
registerUsage[instr.dst] = i;
registerUsage[instr.src] = i;
asmCode << "\txchg " << regR[instr.dst] << ", " << regR[instr.src] << std::endl;
traceint(instr);
}
@@ -538,9 +537,8 @@ namespace randomx {
}
void AssemblyGeneratorX86::h_CBRANCH(Instruction& instr, int i) {
int reg = getConditionRegister(registerUsage);
int target = registerUsage[reg].lastUsed + 1;
registerUsage[reg].count++;
int reg = instr.dst;
int target = registerUsage[reg] + 1;
int shift = instr.getModCond() + ConditionOffset;
int32_t imm = instr.getImm32() | (1L << shift);
if (ConditionOffset > 0 || shift > 0)
@@ -550,7 +548,7 @@ namespace randomx {
asmCode << "\tjz randomx_isn_" << target << std::endl;
//mark all registers as used
for (unsigned j = 0; j < RegistersCount; ++j) {
registerUsage[j].lastUsed = i;
registerUsage[j] = i;
}
}