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Use lir->insImmf and emit ins_eq0 centrally in guard() (483365, r=brendan).

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This commit is contained in:
Andreas Gal 2009-03-17 10:26:37 -07:00
parent c5b3eb193e
commit 8fb6a7a444
1 changed files with 20 additions and 51 deletions
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71
js/src/jstracer.cpp
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@ -2232,6 +2232,10 @@ TraceRecorder::snapshot(ExitType exitType)
LIns*
TraceRecorder::guard(bool expected, LIns* cond, LIns* exit)
{
if (!cond->isCond()) {
expected = !expected;
cond = lir->ins_eq0(cond);
}
return lir->insGuard(expected ? LIR_xf : LIR_xt, cond, exit);
}
@ -4901,11 +4905,8 @@ TraceRecorder::alu(LOpcode v, jsdouble v0, jsdouble v1, LIns* s0, LIns* s1)
* The result doesn't fit into the integer domain, so either generate
* a floating point constant or a floating point operation.
*/
if (s0->isconst() && s1->isconst()) {
jsdpun u;
u.d = r;
return lir->insImmq(u.u64);
}
if (s0->isconst() && s1->isconst())
return lir->insImmf(r);
return lir->ins2(v, s0, s1);
}
return lir->ins2(v, s0, s1);
@ -4997,11 +4998,9 @@ TraceRecorder::ifop()
} else if (isNumber(v)) {
jsdouble d = asNumber(v);
cond = !JSDOUBLE_IS_NaN(d) && d;
jsdpun u;
u.d = 0;
x = lir->ins2(LIR_and,
lir->ins2(LIR_feq, v_ins, v_ins),
lir->ins_eq0(lir->ins2(LIR_feq, v_ins, lir->insImmq(u.u64))));
lir->ins_eq0(lir->ins2(LIR_feq, v_ins, lir->insImmq(0))));
} else if (JSVAL_IS_STRING(v)) {
cond = JSSTRING_LENGTH(JSVAL_TO_STRING(v)) != 0;
x = lir->ins2(LIR_piand,
@ -5014,12 +5013,7 @@ TraceRecorder::ifop()
return false;
}
flipIf(cx->fp->regs->pc, cond);
bool expected = cond;
if (!x->isCond()) {
x = lir->ins_eq0(x);
expected = !expected;
}
guard(expected, x, BRANCH_EXIT);
guard(cond, x, BRANCH_EXIT);
return true;
}
@ -5096,10 +5090,8 @@ TraceRecorder::switchop()
return true;
if (isNumber(v)) {
jsdouble d = asNumber(v);
jsdpun u;
u.d = d;
guard(true,
addName(lir->ins2(LIR_feq, v_ins, lir->insImmq(u.u64)),
addName(lir->ins2(LIR_feq, v_ins, lir->insImmf(d)),
"guard(switch on numeric)"),
BRANCH_EXIT);
} else if (JSVAL_IS_STRING(v)) {
@ -5139,10 +5131,7 @@ TraceRecorder::inc(jsval& v, LIns*& v_ins, jsint incr, bool pre)
if (!isNumber(v))
ABORT_TRACE("can only inc numbers");
jsdpun u;
u.d = jsdouble(incr);
LIns* v_after = alu(LIR_fadd, asNumber(v), incr, v_ins, lir->insImmq(u.u64));
LIns* v_after = alu(LIR_fadd, asNumber(v), incr, v_ins, lir->insImmf(incr));
const JSCodeSpec& cs = js_CodeSpec[*cx->fp->regs->pc];
JS_ASSERT(cs.ndefs == 1);
@ -6532,9 +6521,7 @@ TraceRecorder::record_JSOP_NEG()
}
if (JSVAL_IS_NULL(v)) {
jsdpun u;
u.d = -0.0;
set(&v, lir->insImmq(u.u64));
set(&v, lir->insImmf(-0.0));
return true;
}
@ -6851,9 +6838,7 @@ success:
case FAIL_NEG:
{
res_ins = lir->ins1(LIR_i2f, res_ins);
jsdpun u;
u.d = 0.0;
guard(false, lir->ins2(LIR_flt, res_ins, lir->insImmq(u.u64)), OOM_EXIT);
guard(false, lir->ins2(LIR_flt, res_ins, lir->insImmq(0)), OOM_EXIT);
break;
}
case FAIL_VOID:
@ -7932,9 +7917,7 @@ JS_REQUIRES_STACK bool
TraceRecorder::record_JSOP_DOUBLE()
{
jsval v = jsval(atoms[GET_INDEX(cx->fp->regs->pc)]);
jsdpun u;
u.d = *JSVAL_TO_DOUBLE(v);
stack(0, lir->insImmq(u.u64));
stack(0, lir->insImmf(*JSVAL_TO_DOUBLE(v)));
return true;
}
@ -7950,18 +7933,14 @@ TraceRecorder::record_JSOP_STRING()
JS_REQUIRES_STACK bool
TraceRecorder::record_JSOP_ZERO()
{
jsdpun u;
u.d = 0.0;
stack(0, lir->insImmq(u.u64));
stack(0, lir->insImmq(0));
return true;
}
JS_REQUIRES_STACK bool
TraceRecorder::record_JSOP_ONE()
{
jsdpun u;
u.d = 1.0;
stack(0, lir->insImmq(u.u64));
stack(0, lir->insImmf(1));
return true;
}
@ -8094,9 +8073,7 @@ TraceRecorder::record_JSOP_SETLOCAL()
JS_REQUIRES_STACK bool
TraceRecorder::record_JSOP_UINT16()
{
jsdpun u;
u.d = (jsdouble)GET_UINT16(cx->fp->regs->pc);
stack(0, lir->insImmq(u.u64));
stack(0, lir->insImmf(GET_UINT16(cx->fp->regs->pc)));
return true;
}
@ -8589,9 +8566,7 @@ JS_REQUIRES_STACK bool
TraceRecorder::record_JSOP_ARGCNT()
{
if (!(cx->fp->fun->flags & JSFUN_HEAVYWEIGHT)) {
jsdpun u;
u.d = cx->fp->argc;
stack(0, lir->insImmq(u.u64));
stack(0, lir->insImmf(cx->fp->argc));
return true;
}
ABORT_TRACE("can't trace heavyweight JSOP_ARGCNT");
@ -9036,9 +9011,7 @@ TraceRecorder::record_JSOP_DELDESC()
JS_REQUIRES_STACK bool
TraceRecorder::record_JSOP_UINT24()
{
jsdpun u;
u.d = (jsdouble)GET_UINT24(cx->fp->regs->pc);
stack(0, lir->insImmq(u.u64));
stack(0, lir->insImmf(GET_UINT24(cx->fp->regs->pc)));
return true;
}
@ -9419,18 +9392,14 @@ TraceRecorder::record_JSOP_NULLTHIS()
JS_REQUIRES_STACK bool
TraceRecorder::record_JSOP_INT8()
{
jsdpun u;
u.d = (jsdouble)GET_INT8(cx->fp->regs->pc);
stack(0, lir->insImmq(u.u64));
stack(0, lir->insImmf(GET_INT8(cx->fp->regs->pc)));
return true;
}
JS_REQUIRES_STACK bool
TraceRecorder::record_JSOP_INT32()
{
jsdpun u;
u.d = (jsdouble)GET_INT32(cx->fp->regs->pc);
stack(0, lir->insImmq(u.u64));
stack(0, lir->insImmf(GET_INT32(cx->fp->regs->pc)));
return true;
}