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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*/
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "jit/RegisterSets.h"
#include "jsapi-tests/tests.h"
using namespace js;
using namespace js::jit;
static bool
CoPrime(size_t a, size_t b)
{
if (b <= 1)
return a == 1 || b == 1;
return CoPrime(b, a % b);
}
// This macros are use to iterave over all registers in a large number of
// non-looping sequences, which does not rely on the getFirst / getLast
// functions.
#define BEGIN_INDEX_WALK(RegTotal) \
static const size_t Total = RegTotal; \
for (size_t walk = 1; walk < RegTotal; walk += 2) { \
if (!CoPrime(RegTotal, walk)) \
continue; \
for (size_t start = 0; start < RegTotal; start++) { \
size_t index = start;
#define END_INDEX_WALK \
} \
}
#define FOR_ALL_REGISTERS(Register, reg) \
do { \
Register reg = Register::FromCode(index);
#define END_FOR_ALL_REGISTERS \
index = (index + walk) % Total; \
} while(index != start)
BEGIN_TEST(testJitRegisterSet_GPR)
{
BEGIN_INDEX_WALK(Registers::Total)
LiveGeneralRegisterSet liveRegs;
AllocatableGeneralRegisterSet pool(GeneralRegisterSet::All());
CHECK(liveRegs.empty());
CHECK(pool.set() == GeneralRegisterSet::All());
FOR_ALL_REGISTERS(Register, reg) {
CHECK(!pool.has(reg) || !liveRegs.has(reg));
if (pool.has(reg)) {
CHECK(!liveRegs.has(reg));
pool.take(reg);
liveRegs.add(reg);
CHECK(liveRegs.has(reg));
CHECK(!pool.has(reg));
}
CHECK(!pool.has(reg) || !liveRegs.has(reg));
} END_FOR_ALL_REGISTERS;
CHECK(pool.empty());
FOR_ALL_REGISTERS(Register, reg) {
CHECK(!pool.has(reg) || !liveRegs.has(reg));
if (liveRegs.has(reg)) {
CHECK(!pool.has(reg));
liveRegs.take(reg);
pool.add(reg);
CHECK(pool.has(reg));
CHECK(!liveRegs.has(reg));
}
CHECK(!pool.has(reg) || !liveRegs.has(reg));
} END_FOR_ALL_REGISTERS;
CHECK(liveRegs.empty());
CHECK(pool.set() == GeneralRegisterSet::All());
END_INDEX_WALK
return true;
}
END_TEST(testJitRegisterSet_GPR)
BEGIN_TEST(testJitRegisterSet_FPU)
{
BEGIN_INDEX_WALK(FloatRegisters::Total)
LiveFloatRegisterSet liveRegs;
AllocatableFloatRegisterSet pool(FloatRegisterSet::All());
CHECK(liveRegs.empty());
CHECK(pool.set() == FloatRegisterSet::All());
FOR_ALL_REGISTERS(FloatRegister, reg) {
CHECK(!pool.has(reg) || !liveRegs.has(reg));
if (pool.has(reg)) {
CHECK(!liveRegs.has(reg));
pool.take(reg);
liveRegs.add(reg);
CHECK(liveRegs.has(reg));
CHECK(!pool.has(reg));
}
CHECK(!pool.has(reg) || !liveRegs.has(reg));
} END_FOR_ALL_REGISTERS;
CHECK(pool.empty());
FOR_ALL_REGISTERS(FloatRegister, reg) {
CHECK(!pool.has(reg) || !liveRegs.has(reg));
if (liveRegs.has(reg)) {
CHECK(!pool.has(reg));
liveRegs.take(reg);
pool.add(reg);
CHECK(pool.has(reg));
CHECK(!liveRegs.has(reg));
}
CHECK(!pool.has(reg) || !liveRegs.has(reg));
} END_FOR_ALL_REGISTERS;
CHECK(liveRegs.empty());
CHECK(pool.set() == FloatRegisterSet::All());
END_INDEX_WALK
return true;
}
END_TEST(testJitRegisterSet_FPU)
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