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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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src/jit_compiler_x86.cpp
+22 -24
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@@ -267,8 +267,7 @@ namespace randomx {
void JitCompilerX86::generateProgramPrologue(Program& prog, ProgramConfiguration& pcfg) {
instructionOffsets.clear();
for (unsigned i = 0; i < 8; ++i) {
registerUsage[i].lastUsed = -1;
registerUsage[i].count = 0;
registerUsage[i] = -1;
}
codePos = prologueSize;
memcpy(code + codePos - 48, &pcfg.eMask, sizeof(pcfg.eMask));
@@ -435,7 +434,7 @@ namespace randomx {
}
void JitCompilerX86::h_IADD_RS(Instruction& instr, int i) {
registerUsage[instr.dst].lastUsed = i;
registerUsage[instr.dst] = i;
emit(REX_LEA);
if (instr.dst == RegisterNeedsDisplacement)
emitByte(0xac);
@@ -447,7 +446,7 @@ namespace randomx {
}
void JitCompilerX86::h_IADD_M(Instruction& instr, int i) {
registerUsage[instr.dst].lastUsed = i;
registerUsage[instr.dst] = i;
if (instr.src != instr.dst) {
genAddressReg(instr);
emit(REX_ADD_RM);
@@ -466,7 +465,7 @@ namespace randomx {
}
void JitCompilerX86::h_ISUB_R(Instruction& instr, int i) {
registerUsage[instr.dst].lastUsed = i;
registerUsage[instr.dst] = i;
if (instr.src != instr.dst) {
emit(REX_SUB_RR);
emitByte(0xc0 + 8 * instr.dst + instr.src);
@@ -479,7 +478,7 @@ namespace randomx {
}
void JitCompilerX86::h_ISUB_M(Instruction& instr, int i) {
registerUsage[instr.dst].lastUsed = i;
registerUsage[instr.dst] = i;
if (instr.src != instr.dst) {
genAddressReg(instr);
emit(REX_SUB_RM);
@@ -494,7 +493,7 @@ namespace randomx {
}
void JitCompilerX86::h_IMUL_R(Instruction& instr, int i) {
registerUsage[instr.dst].lastUsed = i;
registerUsage[instr.dst] = i;
if (instr.src != instr.dst) {
emit(REX_IMUL_RR);
emitByte(0xc0 + 8 * instr.dst + instr.src);
@@ -507,7 +506,7 @@ namespace randomx {
}
void JitCompilerX86::h_IMUL_M(Instruction& instr, int i) {
registerUsage[instr.dst].lastUsed = i;
registerUsage[instr.dst] = i;
if (instr.src != instr.dst) {
genAddressReg(instr);
emit(REX_IMUL_RM);
@@ -522,7 +521,7 @@ namespace randomx {
}
void JitCompilerX86::h_IMULH_R(Instruction& instr, int i) {
registerUsage[instr.dst].lastUsed = i;
registerUsage[instr.dst] = i;
emit(REX_MOV_RR64);
emitByte(0xc0 + instr.dst);
emit(REX_MUL_R);
@@ -532,7 +531,7 @@ namespace randomx {
}
void JitCompilerX86::h_IMULH_M(Instruction& instr, int i) {
registerUsage[instr.dst].lastUsed = i;
registerUsage[instr.dst] = i;
if (instr.src != instr.dst) {
genAddressReg(instr, false);
emit(REX_MOV_RR64);
@@ -551,7 +550,7 @@ namespace randomx {
}
void JitCompilerX86::h_ISMULH_R(Instruction& instr, int i) {
registerUsage[instr.dst].lastUsed = i;
registerUsage[instr.dst] = i;
emit(REX_MOV_RR64);
emitByte(0xc0 + instr.dst);
emit(REX_MUL_R);
@@ -561,7 +560,7 @@ namespace randomx {
}
void JitCompilerX86::h_ISMULH_M(Instruction& instr, int i) {
registerUsage[instr.dst].lastUsed = i;
registerUsage[instr.dst] = i;
if (instr.src != instr.dst) {
genAddressReg(instr, false);
emit(REX_MOV_RR64);
@@ -582,7 +581,7 @@ namespace randomx {
void JitCompilerX86::h_IMUL_RCP(Instruction& instr, int i) {
uint64_t divisor = instr.getImm32();
if (!isPowerOf2(divisor)) {
registerUsage[instr.dst].lastUsed = i;
registerUsage[instr.dst] = i;
emit(MOV_RAX_I);
emit64(randomx_reciprocal_fast(divisor));
emit(REX_IMUL_RM);
@@ -591,13 +590,13 @@ namespace randomx {
}
void JitCompilerX86::h_INEG_R(Instruction& instr, int i) {
registerUsage[instr.dst].lastUsed = i;
registerUsage[instr.dst] = i;
emit(REX_NEG);
emitByte(0xd8 + instr.dst);
}
void JitCompilerX86::h_IXOR_R(Instruction& instr, int i) {
registerUsage[instr.dst].lastUsed = i;
registerUsage[instr.dst] = i;
if (instr.src != instr.dst) {
emit(REX_XOR_RR);
emitByte(0xc0 + 8 * instr.dst + instr.src);
@@ -610,7 +609,7 @@ namespace randomx {
}
void JitCompilerX86::h_IXOR_M(Instruction& instr, int i) {
registerUsage[instr.dst].lastUsed = i;
registerUsage[instr.dst] = i;
if (instr.src != instr.dst) {
genAddressReg(instr);
emit(REX_XOR_RM);
@@ -625,7 +624,7 @@ namespace randomx {
}
void JitCompilerX86::h_IROR_R(Instruction& instr, int i) {
registerUsage[instr.dst].lastUsed = i;
registerUsage[instr.dst] = i;
if (instr.src != instr.dst) {
emit(REX_MOV_RR);
emitByte(0xc8 + instr.src);
@@ -640,7 +639,7 @@ namespace randomx {
}
void JitCompilerX86::h_IROL_R(Instruction& instr, int i) {
registerUsage[instr.dst].lastUsed = i;
registerUsage[instr.dst] = i;
if (instr.src != instr.dst) {
emit(REX_MOV_RR);
emitByte(0xc8 + instr.src);
@@ -656,8 +655,8 @@ namespace randomx {
void JitCompilerX86::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;
emit(REX_XCHG);
emitByte(0xc0 + instr.src + 8 * instr.dst);
}
@@ -739,9 +738,8 @@ namespace randomx {
}
void JitCompilerX86::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;
emit(REX_ADD_I);
emitByte(0xc0 + reg);
int shift = instr.getModCond() + ConditionOffset;
@@ -756,7 +754,7 @@ namespace randomx {
emit32(instructionOffsets[target] - (codePos + 4));
//mark all registers as used
for (unsigned j = 0; j < RegistersCount; ++j) {
registerUsage[j].lastUsed = i;
registerUsage[j] = i;
}
}