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Fixing mulx usage.

This commit is contained in:
Ben Vanik 2014-05-30 12:41:48 -07:00
parent 6c92e6a5c5
commit 8ba95efdce
1 changed files with 16 additions and 6 deletions
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22
src/alloy/backend/x64/x64_sequences.cc
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@ -2924,7 +2924,7 @@ EMITTER(MUL_HI_I8, MATCH(I<OPCODE_MUL_HI, I8<>, I8<>, I8<>>)) {
static void Emit(X64Emitter& e, const EmitArgType& i) {
if (i.instr->flags & ARITHMETIC_UNSIGNED) {
// TODO(benvanik): place src1 in eax? still need to sign extend
e.movzx(e.eax, i.src1);
e.movzx(e.edx, i.src1);
e.mulx(i.dest.reg().cvt32(), e.eax, i.src2.reg().cvt32());
} else {
e.mov(e.al, i.src1);
@ -2938,7 +2938,7 @@ EMITTER(MUL_HI_I16, MATCH(I<OPCODE_MUL_HI, I16<>, I16<>, I16<>>)) {
static void Emit(X64Emitter& e, const EmitArgType& i) {
if (i.instr->flags & ARITHMETIC_UNSIGNED) {
// TODO(benvanik): place src1 in eax? still need to sign extend
e.movzx(e.eax, i.src1);
e.movzx(e.edx, i.src1);
e.mulx(i.dest.reg().cvt32(), e.eax, i.src2.reg().cvt32());
} else {
e.mov(e.ax, i.src1);
@ -2952,8 +2952,13 @@ EMITTER(MUL_HI_I32, MATCH(I<OPCODE_MUL_HI, I32<>, I32<>, I32<>>)) {
static void Emit(X64Emitter& e, const EmitArgType& i) {
if (i.instr->flags & ARITHMETIC_UNSIGNED) {
// TODO(benvanik): place src1 in eax? still need to sign extend
e.mov(e.eax, i.src1);
e.mulx(i.dest, e.eax, i.src2);
e.mov(e.edx, i.src1);
if (i.src2.is_constant) {
e.mov(e.eax, i.src2.constant());
e.mulx(i.dest, e.edx, e.eax);
} else {
e.mulx(i.dest, e.edx, i.src2);
}
} else {
e.mov(e.eax, i.src1);
e.imul(i.src2);
@ -2966,8 +2971,13 @@ EMITTER(MUL_HI_I64, MATCH(I<OPCODE_MUL_HI, I64<>, I64<>, I64<>>)) {
static void Emit(X64Emitter& e, const EmitArgType& i) {
if (i.instr->flags & ARITHMETIC_UNSIGNED) {
// TODO(benvanik): place src1 in eax? still need to sign extend
e.mov(e.rax, i.src1);
e.mulx(i.dest, e.rax, i.src2);
e.mov(e.rdx, i.src1);
if (i.src2.is_constant) {
e.mov(e.rax, i.src2.constant());
e.mulx(i.dest, e.rdx, e.rax);
} else {
e.mulx(i.dest, e.rax, i.src2);
}
} else {
e.mov(e.rax, i.src1);
e.imul(i.src2);