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defer to moveCR when adding or subtracting zero

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This commit is contained in:
Joel Dice 2009-03-06 17:11:51 -07:00
parent 33ba8d084d
commit 9b9ae62541
1 changed files with 35 additions and 31 deletions
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66
src/powerpc.cpp
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@ -654,6 +654,37 @@ moveZRR(Context* c, unsigned srcSize, Assembler::Register* src,
}
}
void
moveCR2(Context* c, unsigned, Assembler::Constant* src,
unsigned dstSize, Assembler::Register* dst, unsigned promiseOffset)
{
if (dstSize <= 4) {
if (src->value->resolved()) {
int32_t v = src->value->value();
if (isInt16(v)) {
issue(c, li(dst->low, v));
} else {
issue(c, lis(dst->low, v >> 16));
issue(c, ori(dst->low, dst->low, v));
}
} else {
appendImmediateTask
(c, src->value, offset(c), BytesPerWord, promiseOffset);
issue(c, lis(dst->low, 0));
issue(c, ori(dst->low, dst->low, 0));
}
} else {
abort(c); // todo
}
}
void
moveCR(Context* c, unsigned srcSize, Assembler::Constant* src,
unsigned dstSize, Assembler::Register* dst)
{
moveCR2(c, srcSize, src, dstSize, dst, 0);
}
void addR(Context* con, unsigned size, Reg* a, Reg* b, Reg* t) {
if(size == 8) {
issue(con, addc(R(t), R(a), R(b)));
@ -671,6 +702,8 @@ void addC(Context* con, unsigned size, Const* a, Reg* b, Reg* t) {
issue(con, addi(R(t), R(b), lo16(i)));
if(not isInt16(i))
issue(con, addis(R(t), R(t), hi16(i)));
} else {
moveCR(con, size, a, size, t);
}
}
@ -691,6 +724,8 @@ void subC(Context* con, unsigned size, Const* a, Reg* b, Reg* t) {
issue(con, subi(R(t), R(b), lo16(i)));
if(not isInt16(i))
issue(con, subis(R(t), R(t), hi16(i)));
} else {
moveCR(con, size, a, size, t);
}
}
@ -948,37 +983,6 @@ moveZMR(Context* c, unsigned srcSize, Assembler::Memory* src,
dstSize, dst, true, false);
}
void
moveCR2(Context* c, unsigned, Assembler::Constant* src,
unsigned dstSize, Assembler::Register* dst, unsigned promiseOffset)
{
if (dstSize <= 4) {
if (src->value->resolved()) {
int32_t v = src->value->value();
if (isInt16(v)) {
issue(c, li(dst->low, v));
} else {
issue(c, lis(dst->low, v >> 16));
issue(c, ori(dst->low, dst->low, v));
}
} else {
appendImmediateTask
(c, src->value, offset(c), BytesPerWord, promiseOffset);
issue(c, lis(dst->low, 0));
issue(c, ori(dst->low, dst->low, 0));
}
} else {
abort(c); // todo
}
}
void
moveCR(Context* c, unsigned srcSize, Assembler::Constant* src,
unsigned dstSize, Assembler::Register* dst)
{
moveCR2(c, srcSize, src, dstSize, dst, 0);
}
// void moveCR3(Context* con, unsigned aSize, Const* a, unsigned tSize, Reg* t) {
// int64_t i = getVal(a);
// if(tSize == 8) {