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Bug 556459 - TM: remove unnecessary cases from demote(), isPromoteInt(), isPromoteUInt(). r=gal.

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This commit is contained in:
Nicholas Nethercote 2010-04-05 22:16:42 -07:00
parent 4542317997
commit 934d8c0f95
1 changed files with 24 additions and 23 deletions
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47
js/src/jstracer.cpp
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@ -1624,46 +1624,47 @@ foprnd2(LIns* i)
}
static LIns*
demote(LirWriter *out, LIns* i)
demote(LirWriter *out, LIns* ins)
{
if (i->isCall())
return i->callArgN(0);
if (isfop(i, LIR_i2f) || isfop(i, LIR_u2f))
return foprnd1(i);
if (i->isconst())
return i;
JS_ASSERT(i->isconstf());
double cf = i->imm64f();
JS_ASSERT(ins->isF64());
if (ins->isCall())
return ins->callArgN(0);
if (isfop(ins, LIR_i2f) || isfop(ins, LIR_u2f))
return foprnd1(ins);
JS_ASSERT(ins->isconstf());
double cf = ins->imm64f();
int32_t ci = cf > 0x7fffffff ? uint32_t(cf) : int32_t(cf);
return out->insImm(ci);
}
static bool
isPromoteInt(LIns* i)
isPromoteInt(LIns* ins)
{
if (isfop(i, LIR_i2f) || i->isconst())
if (isfop(ins, LIR_i2f))
return true;
if (!i->isconstf())
return false;
jsdouble d = i->imm64f();
return d == jsdouble(jsint(d)) && !JSDOUBLE_IS_NEGZERO(d);
if (ins->isconstf()) {
jsdouble d = ins->imm64f();
return d == jsdouble(jsint(d)) && !JSDOUBLE_IS_NEGZERO(d);
}
return false;
}
static bool
isPromoteUint(LIns* i)
isPromoteUint(LIns* ins)
{
if (isfop(i, LIR_u2f) || i->isconst())
if (isfop(ins, LIR_u2f))
return true;
if (!i->isconstf())
return false;
jsdouble d = i->imm64f();
return d == jsdouble(jsuint(d)) && !JSDOUBLE_IS_NEGZERO(d);
if (ins->isconstf()) {
jsdouble d = ins->imm64f();
return d == jsdouble(jsuint(d)) && !JSDOUBLE_IS_NEGZERO(d);
}
return false;
}
static bool
isPromote(LIns* i)
isPromote(LIns* ins)
{
return isPromoteInt(i) || isPromoteUint(i);
return isPromoteInt(ins) || isPromoteUint(ins);
}
/*