darling-JavaScriptCore/b3/testb3_7.cpp

1886 lines
74 KiB
C++

/*
* Copyright (C) 2015-2020 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "testb3.h"
#if ENABLE(B3_JIT)
void testPinRegisters()
{
auto go = [&] (bool pin) {
Procedure proc;
RegisterSet csrs;
csrs.merge(RegisterSet::calleeSaveRegisters());
csrs.exclude(RegisterSet::stackRegisters());
if (pin) {
csrs.forEach(
[&] (Reg reg) {
proc.pinRegister(reg);
});
}
BasicBlock* root = proc.addBlock();
Value* a = root->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR0);
Value* b = root->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR1);
Value* c = root->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR2);
Value* d = root->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::regCS0);
root->appendNew<CCallValue>(
proc, Void, Origin(),
root->appendNew<ConstPtrValue>(proc, Origin(), static_cast<intptr_t>(0x1234)));
root->appendNew<CCallValue>(
proc, Void, Origin(),
root->appendNew<ConstPtrValue>(proc, Origin(), static_cast<intptr_t>(0x1235)),
a, b, c);
PatchpointValue* patchpoint = root->appendNew<PatchpointValue>(proc, Void, Origin());
patchpoint->appendSomeRegister(d);
unsigned optLevel = proc.optLevel();
patchpoint->setGenerator(
[&] (CCallHelpers&, const StackmapGenerationParams& params) {
if (optLevel > 1)
CHECK_EQ(params[0].gpr(), GPRInfo::regCS0);
});
root->appendNew<Value>(proc, Return, Origin());
auto code = compileProc(proc);
bool usesCSRs = false;
for (Air::BasicBlock* block : proc.code()) {
for (Air::Inst& inst : *block) {
if (inst.kind.opcode == Air::Patch && inst.origin == patchpoint)
continue;
inst.forEachTmpFast(
[&] (Air::Tmp tmp) {
if (tmp.isReg())
usesCSRs |= csrs.get(tmp.reg());
});
}
}
if (proc.optLevel() < 2) {
// Our less good register allocators may use the
// pinned CSRs in a move.
usesCSRs = false;
}
for (const RegisterAtOffset& regAtOffset : proc.calleeSaveRegisterAtOffsetList())
usesCSRs |= csrs.get(regAtOffset.reg());
CHECK_EQ(usesCSRs, !pin);
};
go(true);
go(false);
}
void testX86LeaAddAddShlLeft()
{
// Add(Add(Shl(@x, $c), @y), $d)
Procedure proc;
BasicBlock* root = proc.addBlock();
Value* result = root->appendNew<Value>(
proc, Add, Origin(),
root->appendNew<Value>(
proc, Add, Origin(),
root->appendNew<Value>(
proc, Shl, Origin(),
root->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR1),
root->appendNew<Const32Value>(proc, Origin(), 2)),
root->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR0)),
root->appendNew<ConstPtrValue>(proc, Origin(), 100));
root->appendNew<Value>(proc, Return, Origin(), result);
auto code = compileProc(proc);
if (proc.optLevel() > 1)
checkUsesInstruction(*code, "lea 0x64(%rdi,%rsi,4), %rax");
else
checkUsesInstruction(*code, "lea");
CHECK_EQ(invoke<intptr_t>(*code, 1, 2), (1 + (2 << 2)) + 100);
}
void testX86LeaAddAddShlRight()
{
// Add(Add(@x, Shl(@y, $c)), $d)
Procedure proc;
BasicBlock* root = proc.addBlock();
Value* result = root->appendNew<Value>(
proc, Add, Origin(),
root->appendNew<Value>(
proc, Add, Origin(),
root->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR0),
root->appendNew<Value>(
proc, Shl, Origin(),
root->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR1),
root->appendNew<Const32Value>(proc, Origin(), 2))),
root->appendNew<ConstPtrValue>(proc, Origin(), 100));
root->appendNew<Value>(proc, Return, Origin(), result);
auto code = compileProc(proc);
if (proc.optLevel() > 1)
checkUsesInstruction(*code, "lea 0x64(%rdi,%rsi,4), %rax");
else
checkUsesInstruction(*code, "lea");
CHECK_EQ(invoke<intptr_t>(*code, 1, 2), (1 + (2 << 2)) + 100);
}
void testX86LeaAddAdd()
{
// Add(Add(@x, @y), $c)
Procedure proc;
BasicBlock* root = proc.addBlock();
Value* result = root->appendNew<Value>(
proc, Add, Origin(),
root->appendNew<Value>(
proc, Add, Origin(),
root->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR1),
root->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR0)),
root->appendNew<ConstPtrValue>(proc, Origin(), 100));
root->appendNew<Value>(proc, Return, Origin(), result);
auto code = compileProc(proc);
CHECK_EQ(invoke<intptr_t>(*code, 1, 2), (1 + 2) + 100);
if (proc.optLevel() > 1) {
checkDisassembly(
*code,
[&] (const char* disassembly) -> bool {
return strstr(disassembly, "lea 0x64(%rdi,%rsi), %rax")
|| strstr(disassembly, "lea 0x64(%rsi,%rdi), %rax");
},
"Expected to find something like lea 0x64(%rdi,%rsi), %rax but didn't!");
}
}
void testX86LeaAddShlRight()
{
// Add(Shl(@x, $c), @y)
Procedure proc;
BasicBlock* root = proc.addBlock();
Value* result = root->appendNew<Value>(
proc, Add, Origin(),
root->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR0),
root->appendNew<Value>(
proc, Shl, Origin(),
root->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR1),
root->appendNew<Const32Value>(proc, Origin(), 2)));
root->appendNew<Value>(proc, Return, Origin(), result);
auto code = compileProc(proc);
if (proc.optLevel() > 1)
checkUsesInstruction(*code, "lea (%rdi,%rsi,4), %rax");
else
checkUsesInstruction(*code, "lea");
CHECK_EQ(invoke<intptr_t>(*code, 1, 2), 1 + (2 << 2));
}
void testX86LeaAddShlLeftScale1()
{
// Add(Shl(@x, $c), @y)
Procedure proc;
BasicBlock* root = proc.addBlock();
Value* result = root->appendNew<Value>(
proc, Add, Origin(),
root->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR0),
root->appendNew<Value>(
proc, Shl, Origin(),
root->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR1),
root->appendNew<Const32Value>(proc, Origin(), 0)));
root->appendNew<Value>(proc, Return, Origin(), result);
auto code = compileProc(proc);
CHECK_EQ(invoke<intptr_t>(*code, 1, 2), 1 + 2);
if (proc.optLevel() > 1) {
checkDisassembly(
*code,
[&] (const char* disassembly) -> bool {
return strstr(disassembly, "lea (%rdi,%rsi), %rax")
|| strstr(disassembly, "lea (%rsi,%rdi), %rax");
},
"Expected to find something like lea (%rdi,%rsi), %rax but didn't!");
}
}
void testX86LeaAddShlLeftScale2()
{
// Add(Shl(@x, $c), @y)
Procedure proc;
BasicBlock* root = proc.addBlock();
Value* result = root->appendNew<Value>(
proc, Add, Origin(),
root->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR0),
root->appendNew<Value>(
proc, Shl, Origin(),
root->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR1),
root->appendNew<Const32Value>(proc, Origin(), 1)));
root->appendNew<Value>(proc, Return, Origin(), result);
auto code = compileProc(proc);
if (proc.optLevel() > 1)
checkUsesInstruction(*code, "lea (%rdi,%rsi,2), %rax");
else
checkUsesInstruction(*code, "lea");
CHECK_EQ(invoke<intptr_t>(*code, 1, 2), 1 + (2 << 1));
}
void testX86LeaAddShlLeftScale4()
{
// Add(Shl(@x, $c), @y)
Procedure proc;
BasicBlock* root = proc.addBlock();
Value* result = root->appendNew<Value>(
proc, Add, Origin(),
root->appendNew<Value>(
proc, Shl, Origin(),
root->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR1),
root->appendNew<Const32Value>(proc, Origin(), 2)),
root->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR0));
root->appendNew<Value>(proc, Return, Origin(), result);
auto code = compileProc(proc);
if (proc.optLevel() > 1)
checkUsesInstruction(*code, "lea (%rdi,%rsi,4), %rax");
else
checkUsesInstruction(*code, "lea");
CHECK_EQ(invoke<intptr_t>(*code, 1, 2), 1 + (2 << 2));
}
void testX86LeaAddShlLeftScale8()
{
// Add(Shl(@x, $c), @y)
Procedure proc;
BasicBlock* root = proc.addBlock();
Value* result = root->appendNew<Value>(
proc, Add, Origin(),
root->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR0),
root->appendNew<Value>(
proc, Shl, Origin(),
root->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR1),
root->appendNew<Const32Value>(proc, Origin(), 3)));
root->appendNew<Value>(proc, Return, Origin(), result);
auto code = compileProc(proc);
if (proc.optLevel() > 1)
checkUsesInstruction(*code, "lea (%rdi,%rsi,8), %rax");
else
checkUsesInstruction(*code, "lea");
CHECK_EQ(invoke<intptr_t>(*code, 1, 2), 1 + (2 << 3));
}
void testAddShl32()
{
// Add(Shl(@x, $c), @y)
Procedure proc;
BasicBlock* root = proc.addBlock();
Value* result = root->appendNew<Value>(
proc, Add, Origin(),
root->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR0),
root->appendNew<Value>(
proc, Shl, Origin(),
root->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR1),
root->appendNew<Const32Value>(proc, Origin(), 32)));
root->appendNew<Value>(proc, Return, Origin(), result);
auto code = compileProc(proc);
CHECK_EQ(invoke<int64_t>(*code, 1, 2), 1 + (static_cast<int64_t>(2) << static_cast<int64_t>(32)));
}
void testAddShl64()
{
// Add(Shl(@x, $c), @y)
Procedure proc;
BasicBlock* root = proc.addBlock();
Value* result = root->appendNew<Value>(
proc, Add, Origin(),
root->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR0),
root->appendNew<Value>(
proc, Shl, Origin(),
root->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR1),
root->appendNew<Const32Value>(proc, Origin(), 64)));
root->appendNew<Value>(proc, Return, Origin(), result);
auto code = compileProc(proc);
CHECK_EQ(invoke<intptr_t>(*code, 1, 2), 1 + 2);
}
void testAddShl65()
{
// Add(Shl(@x, $c), @y)
Procedure proc;
BasicBlock* root = proc.addBlock();
Value* result = root->appendNew<Value>(
proc, Add, Origin(),
root->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR0),
root->appendNew<Value>(
proc, Shl, Origin(),
root->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR1),
root->appendNew<Const32Value>(proc, Origin(), 65)));
root->appendNew<Value>(proc, Return, Origin(), result);
auto code = compileProc(proc);
CHECK_EQ(invoke<intptr_t>(*code, 1, 2), 1 + (2 << 1));
}
void testReduceStrengthReassociation(bool flip)
{
// Add(Add(@x, $c), @y) -> Add(Add(@x, @y), $c)
// and
// Add(@y, Add(@x, $c)) -> Add(Add(@x, @y), $c)
Procedure proc;
BasicBlock* root = proc.addBlock();
Value* arg1 = root->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR0);
Value* arg2 = root->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR1);
Value* innerAdd = root->appendNew<Value>(
proc, Add, Origin(), arg1,
root->appendNew<ConstPtrValue>(proc, Origin(), 42));
Value* outerAdd;
if (flip)
outerAdd = root->appendNew<Value>(proc, Add, Origin(), arg2, innerAdd);
else
outerAdd = root->appendNew<Value>(proc, Add, Origin(), innerAdd, arg2);
root->appendNew<Value>(proc, Return, Origin(), outerAdd);
proc.resetReachability();
if (shouldBeVerbose()) {
dataLog("IR before reduceStrength:\n");
dataLog(proc);
}
reduceStrength(proc);
if (shouldBeVerbose()) {
dataLog("IR after reduceStrength:\n");
dataLog(proc);
}
CHECK_EQ(root->last()->opcode(), Return);
CHECK_EQ(root->last()->child(0)->opcode(), Add);
CHECK(root->last()->child(0)->child(1)->isIntPtr(42));
CHECK_EQ(root->last()->child(0)->child(0)->opcode(), Add);
CHECK(
(root->last()->child(0)->child(0)->child(0) == arg1 && root->last()->child(0)->child(0)->child(1) == arg2) ||
(root->last()->child(0)->child(0)->child(0) == arg2 && root->last()->child(0)->child(0)->child(1) == arg1));
}
void testLoadBaseIndexShift2()
{
Procedure proc;
BasicBlock* root = proc.addBlock();
root->appendNew<Value>(
proc, Return, Origin(),
root->appendNew<MemoryValue>(
proc, Load, Int32, Origin(),
root->appendNew<Value>(
proc, Add, Origin(),
root->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR0),
root->appendNew<Value>(
proc, Shl, Origin(),
root->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR1),
root->appendNew<Const32Value>(proc, Origin(), 2)))));
auto code = compileProc(proc);
if (isX86() && proc.optLevel() > 1)
checkUsesInstruction(*code, "(%rdi,%rsi,4)");
int32_t value = 12341234;
char* ptr = bitwise_cast<char*>(&value);
for (unsigned i = 0; i < 10; ++i)
CHECK_EQ(invoke<int32_t>(*code, ptr - (static_cast<intptr_t>(1) << static_cast<intptr_t>(2)) * i, i), 12341234);
}
void testLoadBaseIndexShift32()
{
#if CPU(ADDRESS64)
Procedure proc;
BasicBlock* root = proc.addBlock();
root->appendNew<Value>(
proc, Return, Origin(),
root->appendNew<MemoryValue>(
proc, Load, Int32, Origin(),
root->appendNew<Value>(
proc, Add, Origin(),
root->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR0),
root->appendNew<Value>(
proc, Shl, Origin(),
root->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR1),
root->appendNew<Const32Value>(proc, Origin(), 32)))));
auto code = compileProc(proc);
int32_t value = 12341234;
char* ptr = bitwise_cast<char*>(&value);
for (unsigned i = 0; i < 10; ++i)
CHECK_EQ(invoke<int32_t>(*code, ptr - (static_cast<intptr_t>(1) << static_cast<intptr_t>(32)) * i, i), 12341234);
#endif
}
void testOptimizeMaterialization()
{
Procedure proc;
if (proc.optLevel() < 2)
return;
BasicBlock* root = proc.addBlock();
root->appendNew<CCallValue>(
proc, Void, Origin(),
root->appendNew<ConstPtrValue>(proc, Origin(), 0x123423453456llu),
root->appendNew<ConstPtrValue>(proc, Origin(), 0x123423453456llu + 35));
root->appendNew<Value>(proc, Return, Origin());
auto code = compileProc(proc);
bool found = false;
for (Air::BasicBlock* block : proc.code()) {
for (Air::Inst& inst : *block) {
if (inst.kind.opcode != Air::Add64)
continue;
if (inst.args[0] != Air::Arg::imm(35))
continue;
found = true;
}
}
CHECK(found);
}
template<typename Func>
void generateLoop(Procedure& proc, const Func& func)
{
BasicBlock* root = proc.addBlock();
BasicBlock* loop = proc.addBlock();
BasicBlock* end = proc.addBlock();
UpsilonValue* initialIndex = root->appendNew<UpsilonValue>(
proc, Origin(), root->appendNew<Const32Value>(proc, Origin(), 0));
root->appendNew<Value>(proc, Jump, Origin());
root->setSuccessors(loop);
Value* index = loop->appendNew<Value>(proc, Phi, Int32, Origin());
initialIndex->setPhi(index);
Value* one = func(loop, index);
Value* nextIndex = loop->appendNew<Value>(proc, Add, Origin(), index, one);
UpsilonValue* loopIndex = loop->appendNew<UpsilonValue>(proc, Origin(), nextIndex);
loopIndex->setPhi(index);
loop->appendNew<Value>(
proc, Branch, Origin(),
loop->appendNew<Value>(
proc, LessThan, Origin(), nextIndex,
loop->appendNew<Const32Value>(proc, Origin(), 100)));
loop->setSuccessors(loop, end);
end->appendNew<Value>(proc, Return, Origin());
}
static std::array<int, 100> makeArrayForLoops()
{
std::array<int, 100> result;
for (unsigned i = 0; i < result.size(); ++i)
result[i] = i & 1;
return result;
}
template<typename Func>
void generateLoopNotBackwardsDominant(Procedure& proc, std::array<int, 100>& array, const Func& func)
{
BasicBlock* root = proc.addBlock();
BasicBlock* loopHeader = proc.addBlock();
BasicBlock* loopCall = proc.addBlock();
BasicBlock* loopFooter = proc.addBlock();
BasicBlock* end = proc.addBlock();
UpsilonValue* initialIndex = root->appendNew<UpsilonValue>(
proc, Origin(), root->appendNew<Const32Value>(proc, Origin(), 0));
// If you look carefully, you'll notice that this is an extremely sneaky use of Upsilon that demonstrates
// the extent to which our SSA is different from normal-person SSA.
UpsilonValue* defaultOne = root->appendNew<UpsilonValue>(
proc, Origin(), root->appendNew<Const32Value>(proc, Origin(), 1));
root->appendNew<Value>(proc, Jump, Origin());
root->setSuccessors(loopHeader);
Value* index = loopHeader->appendNew<Value>(proc, Phi, Int32, Origin());
initialIndex->setPhi(index);
// if (array[index])
loopHeader->appendNew<Value>(
proc, Branch, Origin(),
loopHeader->appendNew<MemoryValue>(
proc, Load, Int32, Origin(),
loopHeader->appendNew<Value>(
proc, Add, Origin(),
loopHeader->appendNew<ConstPtrValue>(proc, Origin(), &array),
loopHeader->appendNew<Value>(
proc, Mul, Origin(),
loopHeader->appendNew<Value>(proc, ZExt32, Origin(), index),
loopHeader->appendNew<ConstPtrValue>(proc, Origin(), sizeof(int))))));
loopHeader->setSuccessors(loopCall, loopFooter);
Value* functionCall = func(loopCall, index);
UpsilonValue* oneFromFunction = loopCall->appendNew<UpsilonValue>(proc, Origin(), functionCall);
loopCall->appendNew<Value>(proc, Jump, Origin());
loopCall->setSuccessors(loopFooter);
Value* one = loopFooter->appendNew<Value>(proc, Phi, Int32, Origin());
defaultOne->setPhi(one);
oneFromFunction->setPhi(one);
Value* nextIndex = loopFooter->appendNew<Value>(proc, Add, Origin(), index, one);
UpsilonValue* loopIndex = loopFooter->appendNew<UpsilonValue>(proc, Origin(), nextIndex);
loopIndex->setPhi(index);
loopFooter->appendNew<Value>(
proc, Branch, Origin(),
loopFooter->appendNew<Value>(
proc, LessThan, Origin(), nextIndex,
loopFooter->appendNew<Const32Value>(proc, Origin(), 100)));
loopFooter->setSuccessors(loopHeader, end);
end->appendNew<Value>(proc, Return, Origin());
}
static JSC_DECLARE_JIT_OPERATION_WITHOUT_WTF_INTERNAL(oneFunction, int, (int* callCount));
JSC_DEFINE_JIT_OPERATION(oneFunction, int, (int* callCount))
{
(*callCount)++;
return 1;
}
static JSC_DECLARE_JIT_OPERATION_WITHOUT_WTF_INTERNAL(noOpFunction, void, ());
JSC_DEFINE_JIT_OPERATION(noOpFunction, void, ())
{
}
void testLICMPure()
{
Procedure proc;
if (proc.optLevel() < 2)
return;
generateLoop(
proc,
[&] (BasicBlock* loop, Value*) -> Value* {
return loop->appendNew<CCallValue>(
proc, Int32, Origin(), Effects::none(),
loop->appendNew<ConstPtrValue>(proc, Origin(), tagCFunction<OperationPtrTag>(oneFunction)),
loop->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR0));
});
unsigned callCount = 0;
compileAndRun<void>(proc, &callCount);
CHECK_EQ(callCount, 1u);
}
void testLICMPureSideExits()
{
Procedure proc;
if (proc.optLevel() < 2)
return;
generateLoop(
proc,
[&] (BasicBlock* loop, Value*) -> Value* {
Effects effects = Effects::none();
effects.exitsSideways = true;
loop->appendNew<CCallValue>(
proc, Void, Origin(), effects,
loop->appendNew<ConstPtrValue>(proc, Origin(), tagCFunction<OperationPtrTag>(noOpFunction)));
return loop->appendNew<CCallValue>(
proc, Int32, Origin(), Effects::none(),
loop->appendNew<ConstPtrValue>(proc, Origin(), tagCFunction<OperationPtrTag>(oneFunction)),
loop->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR0));
});
unsigned callCount = 0;
compileAndRun<void>(proc, &callCount);
CHECK_EQ(callCount, 1u);
}
void testLICMPureWritesPinned()
{
Procedure proc;
if (proc.optLevel() < 2)
return;
generateLoop(
proc,
[&] (BasicBlock* loop, Value*) -> Value* {
Effects effects = Effects::none();
effects.writesPinned = true;
loop->appendNew<CCallValue>(
proc, Void, Origin(), effects,
loop->appendNew<ConstPtrValue>(proc, Origin(), tagCFunction<OperationPtrTag>(noOpFunction)));
return loop->appendNew<CCallValue>(
proc, Int32, Origin(), Effects::none(),
loop->appendNew<ConstPtrValue>(proc, Origin(), tagCFunction<OperationPtrTag>(oneFunction)),
loop->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR0));
});
unsigned callCount = 0;
compileAndRun<void>(proc, &callCount);
CHECK_EQ(callCount, 1u);
}
void testLICMPureWrites()
{
Procedure proc;
if (proc.optLevel() < 2)
return;
generateLoop(
proc,
[&] (BasicBlock* loop, Value*) -> Value* {
Effects effects = Effects::none();
effects.writes = HeapRange(63479);
loop->appendNew<CCallValue>(
proc, Void, Origin(), effects,
loop->appendNew<ConstPtrValue>(proc, Origin(), tagCFunction<OperationPtrTag>(noOpFunction)));
return loop->appendNew<CCallValue>(
proc, Int32, Origin(), Effects::none(),
loop->appendNew<ConstPtrValue>(proc, Origin(), tagCFunction<OperationPtrTag>(oneFunction)),
loop->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR0));
});
unsigned callCount = 0;
compileAndRun<void>(proc, &callCount);
CHECK_EQ(callCount, 1u);
}
void testLICMReadsLocalState()
{
Procedure proc;
generateLoop(
proc,
[&] (BasicBlock* loop, Value*) -> Value* {
Effects effects = Effects::none();
effects.readsLocalState = true;
return loop->appendNew<CCallValue>(
proc, Int32, Origin(), effects,
loop->appendNew<ConstPtrValue>(proc, Origin(), tagCFunction<OperationPtrTag>(oneFunction)),
loop->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR0));
});
unsigned callCount = 0;
compileAndRun<void>(proc, &callCount);
CHECK_EQ(callCount, 100u); // We'll fail to hoist because the loop has Upsilons.
}
void testLICMReadsPinned()
{
Procedure proc;
if (proc.optLevel() < 2)
return;
generateLoop(
proc,
[&] (BasicBlock* loop, Value*) -> Value* {
Effects effects = Effects::none();
effects.readsPinned = true;
return loop->appendNew<CCallValue>(
proc, Int32, Origin(), effects,
loop->appendNew<ConstPtrValue>(proc, Origin(), tagCFunction<OperationPtrTag>(oneFunction)),
loop->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR0));
});
unsigned callCount = 0;
compileAndRun<void>(proc, &callCount);
CHECK_EQ(callCount, 1u);
}
void testLICMReads()
{
Procedure proc;
if (proc.optLevel() < 2)
return;
generateLoop(
proc,
[&] (BasicBlock* loop, Value*) -> Value* {
Effects effects = Effects::none();
effects.reads = HeapRange::top();
return loop->appendNew<CCallValue>(
proc, Int32, Origin(), effects,
loop->appendNew<ConstPtrValue>(proc, Origin(), tagCFunction<OperationPtrTag>(oneFunction)),
loop->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR0));
});
unsigned callCount = 0;
compileAndRun<void>(proc, &callCount);
CHECK_EQ(callCount, 1u);
}
void testLICMPureNotBackwardsDominant()
{
Procedure proc;
if (proc.optLevel() < 2)
return;
auto array = makeArrayForLoops();
generateLoopNotBackwardsDominant(
proc, array,
[&] (BasicBlock* loop, Value*) -> Value* {
return loop->appendNew<CCallValue>(
proc, Int32, Origin(), Effects::none(),
loop->appendNew<ConstPtrValue>(proc, Origin(), tagCFunction<OperationPtrTag>(oneFunction)),
loop->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR0));
});
unsigned callCount = 0;
compileAndRun<void>(proc, &callCount);
CHECK_EQ(callCount, 1u);
}
void testLICMPureFoiledByChild()
{
Procedure proc;
generateLoop(
proc,
[&] (BasicBlock* loop, Value* index) -> Value* {
return loop->appendNew<CCallValue>(
proc, Int32, Origin(), Effects::none(),
loop->appendNew<ConstPtrValue>(proc, Origin(), tagCFunction<OperationPtrTag>(oneFunction)),
loop->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR0),
index);
});
unsigned callCount = 0;
compileAndRun<void>(proc, &callCount);
CHECK_EQ(callCount, 100u);
}
void testLICMPureNotBackwardsDominantFoiledByChild()
{
Procedure proc;
if (proc.optLevel() < 2)
return;
auto array = makeArrayForLoops();
generateLoopNotBackwardsDominant(
proc, array,
[&] (BasicBlock* loop, Value* index) -> Value* {
return loop->appendNew<CCallValue>(
proc, Int32, Origin(), Effects::none(),
loop->appendNew<ConstPtrValue>(proc, Origin(), tagCFunction<OperationPtrTag>(oneFunction)),
loop->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR0),
index);
});
unsigned callCount = 0;
compileAndRun<void>(proc, &callCount);
CHECK_EQ(callCount, 50u);
}
void testLICMExitsSideways()
{
Procedure proc;
generateLoop(
proc,
[&] (BasicBlock* loop, Value*) -> Value* {
Effects effects = Effects::none();
effects.exitsSideways = true;
return loop->appendNew<CCallValue>(
proc, Int32, Origin(), effects,
loop->appendNew<ConstPtrValue>(proc, Origin(), tagCFunction<OperationPtrTag>(oneFunction)),
loop->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR0));
});
unsigned callCount = 0;
compileAndRun<void>(proc, &callCount);
CHECK_EQ(callCount, 100u);
}
void testLICMWritesLocalState()
{
Procedure proc;
generateLoop(
proc,
[&] (BasicBlock* loop, Value*) -> Value* {
Effects effects = Effects::none();
effects.writesLocalState = true;
return loop->appendNew<CCallValue>(
proc, Int32, Origin(), effects,
loop->appendNew<ConstPtrValue>(proc, Origin(), tagCFunction<OperationPtrTag>(oneFunction)),
loop->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR0));
});
unsigned callCount = 0;
compileAndRun<void>(proc, &callCount);
CHECK_EQ(callCount, 100u);
}
void testLICMWrites()
{
Procedure proc;
generateLoop(
proc,
[&] (BasicBlock* loop, Value*) -> Value* {
Effects effects = Effects::none();
effects.writes = HeapRange(666);
return loop->appendNew<CCallValue>(
proc, Int32, Origin(), effects,
loop->appendNew<ConstPtrValue>(proc, Origin(), tagCFunction<OperationPtrTag>(oneFunction)),
loop->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR0));
});
unsigned callCount = 0;
compileAndRun<void>(proc, &callCount);
CHECK_EQ(callCount, 100u);
}
void testLICMFence()
{
Procedure proc;
generateLoop(
proc,
[&] (BasicBlock* loop, Value*) -> Value* {
Effects effects = Effects::none();
effects.fence = true;
return loop->appendNew<CCallValue>(
proc, Int32, Origin(), effects,
loop->appendNew<ConstPtrValue>(proc, Origin(), tagCFunction<OperationPtrTag>(oneFunction)),
loop->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR0));
});
unsigned callCount = 0;
compileAndRun<void>(proc, &callCount);
CHECK_EQ(callCount, 100u);
}
void testLICMWritesPinned()
{
Procedure proc;
generateLoop(
proc,
[&] (BasicBlock* loop, Value*) -> Value* {
Effects effects = Effects::none();
effects.writesPinned = true;
return loop->appendNew<CCallValue>(
proc, Int32, Origin(), effects,
loop->appendNew<ConstPtrValue>(proc, Origin(), tagCFunction<OperationPtrTag>(oneFunction)),
loop->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR0));
});
unsigned callCount = 0;
compileAndRun<void>(proc, &callCount);
CHECK_EQ(callCount, 100u);
}
void testLICMControlDependent()
{
Procedure proc;
if (proc.optLevel() < 2)
return;
generateLoop(
proc,
[&] (BasicBlock* loop, Value*) -> Value* {
Effects effects = Effects::none();
effects.controlDependent = true;
return loop->appendNew<CCallValue>(
proc, Int32, Origin(), effects,
loop->appendNew<ConstPtrValue>(proc, Origin(), tagCFunction<OperationPtrTag>(oneFunction)),
loop->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR0));
});
unsigned callCount = 0;
compileAndRun<void>(proc, &callCount);
CHECK_EQ(callCount, 1u);
}
void testLICMControlDependentNotBackwardsDominant()
{
Procedure proc;
if (proc.optLevel() < 2)
return;
auto array = makeArrayForLoops();
generateLoopNotBackwardsDominant(
proc, array,
[&] (BasicBlock* loop, Value*) -> Value* {
Effects effects = Effects::none();
effects.controlDependent = true;
return loop->appendNew<CCallValue>(
proc, Int32, Origin(), effects,
loop->appendNew<ConstPtrValue>(proc, Origin(), tagCFunction<OperationPtrTag>(oneFunction)),
loop->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR0));
});
unsigned callCount = 0;
compileAndRun<void>(proc, &callCount);
CHECK_EQ(callCount, 50u);
}
void testLICMControlDependentSideExits()
{
Procedure proc;
generateLoop(
proc,
[&] (BasicBlock* loop, Value*) -> Value* {
Effects effects = Effects::none();
effects.exitsSideways = true;
loop->appendNew<CCallValue>(
proc, Void, Origin(), effects,
loop->appendNew<ConstPtrValue>(proc, Origin(), tagCFunction<OperationPtrTag>(noOpFunction)));
effects = Effects::none();
effects.controlDependent = true;
return loop->appendNew<CCallValue>(
proc, Int32, Origin(), effects,
loop->appendNew<ConstPtrValue>(proc, Origin(), tagCFunction<OperationPtrTag>(oneFunction)),
loop->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR0));
});
unsigned callCount = 0;
compileAndRun<void>(proc, &callCount);
CHECK_EQ(callCount, 100u);
}
void testLICMReadsPinnedWritesPinned()
{
Procedure proc;
generateLoop(
proc,
[&] (BasicBlock* loop, Value*) -> Value* {
Effects effects = Effects::none();
effects.writesPinned = true;
loop->appendNew<CCallValue>(
proc, Void, Origin(), effects,
loop->appendNew<ConstPtrValue>(proc, Origin(), tagCFunction<OperationPtrTag>(noOpFunction)));
effects = Effects::none();
effects.readsPinned = true;
return loop->appendNew<CCallValue>(
proc, Int32, Origin(), effects,
loop->appendNew<ConstPtrValue>(proc, Origin(), tagCFunction<OperationPtrTag>(oneFunction)),
loop->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR0));
});
unsigned callCount = 0;
compileAndRun<void>(proc, &callCount);
CHECK_EQ(callCount, 100u);
}
void testLICMReadsWritesDifferentHeaps()
{
Procedure proc;
if (proc.optLevel() < 2)
return;
generateLoop(
proc,
[&] (BasicBlock* loop, Value*) -> Value* {
Effects effects = Effects::none();
effects.writes = HeapRange(6436);
loop->appendNew<CCallValue>(
proc, Void, Origin(), effects,
loop->appendNew<ConstPtrValue>(proc, Origin(), tagCFunction<OperationPtrTag>(noOpFunction)));
effects = Effects::none();
effects.reads = HeapRange(4886);
return loop->appendNew<CCallValue>(
proc, Int32, Origin(), effects,
loop->appendNew<ConstPtrValue>(proc, Origin(), tagCFunction<OperationPtrTag>(oneFunction)),
loop->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR0));
});
unsigned callCount = 0;
compileAndRun<void>(proc, &callCount);
CHECK_EQ(callCount, 1u);
}
void testLICMReadsWritesOverlappingHeaps()
{
Procedure proc;
generateLoop(
proc,
[&] (BasicBlock* loop, Value*) -> Value* {
Effects effects = Effects::none();
effects.writes = HeapRange(6436, 74458);
loop->appendNew<CCallValue>(
proc, Void, Origin(), effects,
loop->appendNew<ConstPtrValue>(proc, Origin(), tagCFunction<OperationPtrTag>(noOpFunction)));
effects = Effects::none();
effects.reads = HeapRange(48864, 78239);
return loop->appendNew<CCallValue>(
proc, Int32, Origin(), effects,
loop->appendNew<ConstPtrValue>(proc, Origin(), tagCFunction<OperationPtrTag>(oneFunction)),
loop->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR0));
});
unsigned callCount = 0;
compileAndRun<void>(proc, &callCount);
CHECK_EQ(callCount, 100u);
}
void testLICMDefaultCall()
{
Procedure proc;
generateLoop(
proc,
[&] (BasicBlock* loop, Value*) -> Value* {
return loop->appendNew<CCallValue>(
proc, Int32, Origin(),
loop->appendNew<ConstPtrValue>(proc, Origin(), tagCFunction<OperationPtrTag>(oneFunction)),
loop->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR0));
});
unsigned callCount = 0;
compileAndRun<void>(proc, &callCount);
CHECK_EQ(callCount, 100u);
}
void testDepend32()
{
Procedure proc;
BasicBlock* root = proc.addBlock();
Value* ptr = root->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR0);
Value* first = root->appendNew<MemoryValue>(proc, Load, Int32, Origin(), ptr, 0);
Value* second = root->appendNew<MemoryValue>(
proc, Load, Int32, Origin(),
root->appendNew<Value>(
proc, Add, Origin(), ptr,
root->appendNew<Value>(
proc, ZExt32, Origin(),
root->appendNew<Value>(proc, Depend, Origin(), first))),
4);
root->appendNew<Value>(
proc, Return, Origin(),
root->appendNew<Value>(proc, Add, Origin(), first, second));
int32_t values[2];
values[0] = 42;
values[1] = 0xbeef;
auto code = compileProc(proc);
if (isARM64())
checkUsesInstruction(*code, "eor");
else if (isX86()) {
checkDoesNotUseInstruction(*code, "mfence");
checkDoesNotUseInstruction(*code, "lock");
}
CHECK_EQ(invoke<int32_t>(*code, values), 42 + 0xbeef);
}
void testDepend64()
{
Procedure proc;
BasicBlock* root = proc.addBlock();
Value* ptr = root->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR0);
Value* first = root->appendNew<MemoryValue>(proc, Load, Int64, Origin(), ptr, 0);
Value* second = root->appendNew<MemoryValue>(
proc, Load, Int64, Origin(),
root->appendNew<Value>(
proc, Add, Origin(), ptr,
root->appendNew<Value>(proc, Depend, Origin(), first)),
8);
root->appendNew<Value>(
proc, Return, Origin(),
root->appendNew<Value>(proc, Add, Origin(), first, second));
int64_t values[2];
values[0] = 42;
values[1] = 0xbeef;
auto code = compileProc(proc);
if (isARM64())
checkUsesInstruction(*code, "eor");
else if (isX86()) {
checkDoesNotUseInstruction(*code, "mfence");
checkDoesNotUseInstruction(*code, "lock");
}
CHECK_EQ(invoke<int64_t>(*code, values), 42 + 0xbeef);
}
void testWasmBoundsCheck(unsigned offset)
{
Procedure proc;
if (proc.optLevel() < 1)
return;
GPRReg pinned = GPRInfo::argumentGPR1;
proc.pinRegister(pinned);
proc.setWasmBoundsCheckGenerator([=] (CCallHelpers& jit, GPRReg pinnedGPR) {
CHECK_EQ(pinnedGPR, pinned);
// This should always work because a function this simple should never have callee
// saves.
jit.move(CCallHelpers::TrustedImm32(42), GPRInfo::returnValueGPR);
jit.emitFunctionEpilogue();
jit.ret();
});
BasicBlock* root = proc.addBlock();
Value* left = root->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR0);
if (pointerType() != Int32)
left = root->appendNew<Value>(proc, Trunc, Origin(), left);
root->appendNew<WasmBoundsCheckValue>(proc, Origin(), pinned, left, offset);
Value* result = root->appendNew<Const32Value>(proc, Origin(), 0x42);
root->appendNewControlValue(proc, Return, Origin(), result);
auto code = compileProc(proc);
uint32_t bound = 2 + offset;
auto computeResult = [&] (uint32_t input) {
return input + offset < bound ? 0x42 : 42;
};
CHECK_EQ(invoke<int32_t>(*code, 1, bound), computeResult(1));
CHECK_EQ(invoke<int32_t>(*code, 3, bound), computeResult(3));
CHECK_EQ(invoke<int32_t>(*code, 2, bound), computeResult(2));
}
void testWasmAddress()
{
Procedure proc;
GPRReg pinnedGPR = GPRInfo::argumentGPR2;
proc.pinRegister(pinnedGPR);
unsigned loopCount = 100;
Vector<unsigned> values(loopCount);
unsigned numToStore = 42;
BasicBlock* root = proc.addBlock();
BasicBlock* header = proc.addBlock();
BasicBlock* body = proc.addBlock();
BasicBlock* continuation = proc.addBlock();
// Root
Value* loopCountValue = root->appendNew<Value>(proc, Trunc, Origin(), root->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR0));
Value* valueToStore = root->appendNew<Value>(proc, Trunc, Origin(), root->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR1));
UpsilonValue* beginUpsilon = root->appendNew<UpsilonValue>(proc, Origin(), root->appendNew<Const32Value>(proc, Origin(), 0));
root->appendNewControlValue(proc, Jump, Origin(), header);
// Header
Value* indexPhi = header->appendNew<Value>(proc, Phi, Int32, Origin());
header->appendNewControlValue(proc, Branch, Origin(),
header->appendNew<Value>(proc, Below, Origin(), indexPhi, loopCountValue),
body, continuation);
// Body
Value* pointer = body->appendNew<Value>(proc, Mul, Origin(), indexPhi,
body->appendNew<Const32Value>(proc, Origin(), sizeof(unsigned)));
pointer = body->appendNew<Value>(proc, ZExt32, Origin(), pointer);
body->appendNew<MemoryValue>(proc, Store, Origin(), valueToStore,
body->appendNew<WasmAddressValue>(proc, Origin(), pointer, pinnedGPR), 0);
UpsilonValue* incUpsilon = body->appendNew<UpsilonValue>(proc, Origin(),
body->appendNew<Value>(proc, Add, Origin(), indexPhi,
body->appendNew<Const32Value>(proc, Origin(), 1)));
body->appendNewControlValue(proc, Jump, Origin(), header);
// Continuation
continuation->appendNewControlValue(proc, Return, Origin());
beginUpsilon->setPhi(indexPhi);
incUpsilon->setPhi(indexPhi);
auto code = compileProc(proc);
invoke<void>(*code, loopCount, numToStore, values.data());
for (unsigned value : values)
CHECK_EQ(numToStore, value);
}
void testFastTLSLoad()
{
#if ENABLE(FAST_TLS_JIT)
_pthread_setspecific_direct(WTF_TESTING_KEY, bitwise_cast<void*>(static_cast<uintptr_t>(0xbeef)));
Procedure proc;
BasicBlock* root = proc.addBlock();
PatchpointValue* patchpoint = root->appendNew<PatchpointValue>(proc, pointerType(), Origin());
patchpoint->clobber(RegisterSet::macroScratchRegisters());
patchpoint->setGenerator(
[&] (CCallHelpers& jit, const StackmapGenerationParams& params) {
AllowMacroScratchRegisterUsage allowScratch(jit);
jit.loadFromTLSPtr(fastTLSOffsetForKey(WTF_TESTING_KEY), params[0].gpr());
});
root->appendNew<Value>(proc, Return, Origin(), patchpoint);
CHECK_EQ(compileAndRun<uintptr_t>(proc), static_cast<uintptr_t>(0xbeef));
#endif
}
void testFastTLSStore()
{
#if ENABLE(FAST_TLS_JIT)
Procedure proc;
BasicBlock* root = proc.addBlock();
PatchpointValue* patchpoint = root->appendNew<PatchpointValue>(proc, Void, Origin());
patchpoint->clobber(RegisterSet::macroScratchRegisters());
patchpoint->numGPScratchRegisters = 1;
patchpoint->setGenerator(
[&] (CCallHelpers& jit, const StackmapGenerationParams& params) {
AllowMacroScratchRegisterUsage allowScratch(jit);
GPRReg scratch = params.gpScratch(0);
jit.move(CCallHelpers::TrustedImm32(0xdead), scratch);
jit.storeToTLSPtr(scratch, fastTLSOffsetForKey(WTF_TESTING_KEY));
});
root->appendNewControlValue(proc, Return, Origin());
compileAndRun<void>(proc);
CHECK_EQ(bitwise_cast<uintptr_t>(_pthread_getspecific_direct(WTF_TESTING_KEY)), static_cast<uintptr_t>(0xdead));
#endif
}
static NEVER_INLINE bool doubleEq(double a, double b) { return a == b; }
static NEVER_INLINE bool doubleNeq(double a, double b) { return a != b; }
static NEVER_INLINE bool doubleGt(double a, double b) { return a > b; }
static NEVER_INLINE bool doubleGte(double a, double b) { return a >= b; }
static NEVER_INLINE bool doubleLt(double a, double b) { return a < b; }
static NEVER_INLINE bool doubleLte(double a, double b) { return a <= b; }
void testDoubleLiteralComparison(double a, double b)
{
using Test = std::tuple<B3::Opcode, bool (*)(double, double)>;
StdList<Test> tests = {
Test { NotEqual, doubleNeq },
Test { Equal, doubleEq },
Test { EqualOrUnordered, doubleEq },
Test { GreaterThan, doubleGt },
Test { GreaterEqual, doubleGte },
Test { LessThan, doubleLt },
Test { LessEqual, doubleLte },
};
for (const Test& test : tests) {
Procedure proc;
BasicBlock* root = proc.addBlock();
Value* valueA = root->appendNew<ConstDoubleValue>(proc, Origin(), a);
Value* valueB = root->appendNew<ConstDoubleValue>(proc, Origin(), b);
// This is here just to make reduceDoubleToFloat do things.
Value* valueC = root->appendNew<ConstDoubleValue>(proc, Origin(), 0.0);
Value* valueAsFloat = root->appendNew<Value>(proc, DoubleToFloat, Origin(), valueC);
root->appendNewControlValue(
proc, Return, Origin(),
root->appendNew<Value>(proc, BitAnd, Origin(),
root->appendNew<Value>(proc, std::get<0>(test), Origin(), valueA, valueB),
root->appendNew<Value>(proc, Equal, Origin(), valueAsFloat, valueAsFloat)));
CHECK(!!compileAndRun<int32_t>(proc) == std::get<1>(test)(a, b));
}
}
void testFloatEqualOrUnorderedFolding()
{
for (auto& first : floatingPointOperands<float>()) {
for (auto& second : floatingPointOperands<float>()) {
float a = first.value;
float b = second.value;
bool expectedResult = (a == b) || std::isunordered(a, b);
Procedure proc;
BasicBlock* root = proc.addBlock();
Value* constA = root->appendNew<ConstFloatValue>(proc, Origin(), a);
Value* constB = root->appendNew<ConstFloatValue>(proc, Origin(), b);
root->appendNewControlValue(proc, Return, Origin(),
root->appendNew<Value>(
proc, EqualOrUnordered, Origin(),
constA,
constB));
CHECK(!!compileAndRun<int32_t>(proc) == expectedResult);
}
}
}
void testFloatEqualOrUnorderedFoldingNaN()
{
StdList<float> nans = {
bitwise_cast<float>(0xfffffffd),
bitwise_cast<float>(0xfffffffe),
bitwise_cast<float>(0xfffffff0),
static_cast<float>(PNaN),
};
unsigned i = 0;
for (float nan : nans) {
RELEASE_ASSERT(std::isnan(nan));
Procedure proc;
BasicBlock* root = proc.addBlock();
Value* a = root->appendNew<ConstFloatValue>(proc, Origin(), nan);
Value* b = root->appendNew<Value>(proc, DoubleToFloat, Origin(),
root->appendNew<ArgumentRegValue>(proc, Origin(), FPRInfo::argumentFPR0));
if (i % 2)
std::swap(a, b);
++i;
root->appendNewControlValue(proc, Return, Origin(),
root->appendNew<Value>(proc, EqualOrUnordered, Origin(), a, b));
CHECK(!!compileAndRun<int32_t>(proc, static_cast<double>(1.0)));
}
}
void testFloatEqualOrUnorderedDontFold()
{
for (auto& first : floatingPointOperands<float>()) {
float a = first.value;
Procedure proc;
BasicBlock* root = proc.addBlock();
Value* constA = root->appendNew<ConstFloatValue>(proc, Origin(), a);
Value* b = root->appendNew<Value>(proc, DoubleToFloat, Origin(),
root->appendNew<ArgumentRegValue>(proc, Origin(), FPRInfo::argumentFPR0));
root->appendNewControlValue(proc, Return, Origin(),
root->appendNew<Value>(
proc, EqualOrUnordered, Origin(), constA, b));
auto code = compileProc(proc);
for (auto& second : floatingPointOperands<float>()) {
float b = second.value;
bool expectedResult = (a == b) || std::isunordered(a, b);
CHECK(!!invoke<int32_t>(*code, static_cast<double>(b)) == expectedResult);
}
}
}
static JSC_DECLARE_JIT_OPERATION_WITHOUT_WTF_INTERNAL(functionNineArgs, void, (int32_t, void*, void*, void*, void*, void*, void*, void*, void*));
JSC_DEFINE_JIT_OPERATION(functionNineArgs, void, (int32_t, void*, void*, void*, void*, void*, void*, void*, void*))
{
}
void testShuffleDoesntTrashCalleeSaves()
{
Procedure proc;
BasicBlock* root = proc.addBlock();
BasicBlock* likely = proc.addBlock();
BasicBlock* unlikely = proc.addBlock();
RegisterSet regs = RegisterSet::allGPRs();
regs.exclude(RegisterSet::stackRegisters());
regs.exclude(RegisterSet::reservedHardwareRegisters());
regs.exclude(RegisterSet::calleeSaveRegisters());
regs.exclude(RegisterSet::argumentGPRS());
unsigned i = 0;
Vector<Value*> patches;
for (Reg reg : regs) {
++i;
PatchpointValue* patchpoint = root->appendNew<PatchpointValue>(proc, Int32, Origin());
patchpoint->clobber(RegisterSet::macroScratchRegisters());
RELEASE_ASSERT(reg.isGPR());
patchpoint->resultConstraints = { ValueRep::reg(reg.gpr()) };
patchpoint->setGenerator(
[=] (CCallHelpers& jit, const StackmapGenerationParams& params) {
AllowMacroScratchRegisterUsage allowScratch(jit);
jit.move(CCallHelpers::TrustedImm32(i), params[0].gpr());
});
patches.append(patchpoint);
}
Value* arg1 = root->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::toArgumentRegister(0 % GPRInfo::numberOfArgumentRegisters));
Value* arg2 = root->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::toArgumentRegister(1 % GPRInfo::numberOfArgumentRegisters));
Value* arg3 = root->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::toArgumentRegister(2 % GPRInfo::numberOfArgumentRegisters));
Value* arg4 = root->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::toArgumentRegister(3 % GPRInfo::numberOfArgumentRegisters));
Value* arg5 = root->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::toArgumentRegister(4 % GPRInfo::numberOfArgumentRegisters));
Value* arg6 = root->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::toArgumentRegister(5 % GPRInfo::numberOfArgumentRegisters));
Value* arg7 = root->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::toArgumentRegister(6 % GPRInfo::numberOfArgumentRegisters));
Value* arg8 = root->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::toArgumentRegister(7 % GPRInfo::numberOfArgumentRegisters));
PatchpointValue* ptr = root->appendNew<PatchpointValue>(proc, Int64, Origin());
ptr->clobber(RegisterSet::macroScratchRegisters());
ptr->resultConstraints = { ValueRep::reg(GPRInfo::regCS0) };
ptr->appendSomeRegister(arg1);
ptr->setGenerator(
[=] (CCallHelpers& jit, const StackmapGenerationParams& params) {
AllowMacroScratchRegisterUsage allowScratch(jit);
jit.move(params[1].gpr(), params[0].gpr());
});
Value* condition = root->appendNew<Value>(
proc, Equal, Origin(),
ptr,
root->appendNew<Const64Value>(proc, Origin(), 0));
root->appendNewControlValue(
proc, Branch, Origin(),
condition,
FrequentedBlock(likely, FrequencyClass::Normal), FrequentedBlock(unlikely, FrequencyClass::Rare));
// Never executes.
Value* const42 = likely->appendNew<Const32Value>(proc, Origin(), 42);
likely->appendNewControlValue(proc, Return, Origin(), const42);
// Always executes.
Value* constNumber = unlikely->appendNew<Const32Value>(proc, Origin(), 0x1);
unlikely->appendNew<CCallValue>(
proc, Void, Origin(),
unlikely->appendNew<ConstPtrValue>(proc, Origin(), tagCFunction<OperationPtrTag>(functionNineArgs)),
constNumber, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8);
PatchpointValue* voidPatch = unlikely->appendNew<PatchpointValue>(proc, Void, Origin());
voidPatch->clobber(RegisterSet::macroScratchRegisters());
for (Value* v : patches)
voidPatch->appendSomeRegister(v);
voidPatch->appendSomeRegister(arg1);
voidPatch->appendSomeRegister(arg2);
voidPatch->appendSomeRegister(arg3);
voidPatch->appendSomeRegister(arg4);
voidPatch->appendSomeRegister(arg5);
voidPatch->appendSomeRegister(arg6);
voidPatch->setGenerator([=] (CCallHelpers&, const StackmapGenerationParams&) { });
unlikely->appendNewControlValue(proc, Return, Origin(),
unlikely->appendNew<MemoryValue>(proc, Load, Int32, Origin(), ptr));
int32_t* inputPtr = static_cast<int32_t*>(fastMalloc(sizeof(int32_t)));
*inputPtr = 48;
CHECK(compileAndRun<int32_t>(proc, inputPtr) == 48);
fastFree(inputPtr);
}
void testDemotePatchpointTerminal()
{
Procedure proc;
BasicBlock* root = proc.addBlock();
BasicBlock* done = proc.addBlock();
PatchpointValue* patchpoint = root->appendNew<PatchpointValue>(proc, Int32, Origin());
patchpoint->effects.terminal = true;
root->setSuccessors(done);
done->appendNew<Value>(proc, Return, Origin(), patchpoint);
proc.resetReachability();
breakCriticalEdges(proc);
IndexSet<Value*> valuesToDemote;
valuesToDemote.add(patchpoint);
demoteValues(proc, valuesToDemote);
validate(proc);
}
void testReportUsedRegistersLateUseFollowedByEarlyDefDoesNotMarkUseAsDead()
{
Procedure proc;
if (proc.optLevel() < 2)
return;
BasicBlock* root = proc.addBlock();
RegisterSet allRegs = RegisterSet::allGPRs();
allRegs.exclude(RegisterSet::stackRegisters());
allRegs.exclude(RegisterSet::reservedHardwareRegisters());
{
// Make every reg 42 (just needs to be a value other than 10).
Value* const42 = root->appendNew<Const32Value>(proc, Origin(), 42);
PatchpointValue* patchpoint = root->appendNew<PatchpointValue>(proc, Void, Origin());
for (Reg reg : allRegs)
patchpoint->append(const42, ValueRep::reg(reg));
patchpoint->setGenerator([&] (CCallHelpers&, const StackmapGenerationParams&) { });
}
{
Value* const10 = root->appendNew<Const32Value>(proc, Origin(), 10);
PatchpointValue* patchpoint = root->appendNew<PatchpointValue>(proc, Void, Origin());
for (Reg reg : allRegs)
patchpoint->append(const10, ValueRep::lateReg(reg));
patchpoint->setGenerator([&] (CCallHelpers& jit, const StackmapGenerationParams&) {
for (Reg reg : allRegs) {
auto done = jit.branch32(CCallHelpers::Equal, reg.gpr(), CCallHelpers::TrustedImm32(10));
jit.breakpoint();
done.link(&jit);
}
});
}
{
PatchpointValue* patchpoint = root->appendNew<PatchpointValue>(proc, Int32, Origin());
patchpoint->resultConstraints = { ValueRep::SomeEarlyRegister };
patchpoint->setGenerator([&] (CCallHelpers&, const StackmapGenerationParams& params) {
RELEASE_ASSERT(allRegs.contains(params[0].gpr()));
});
}
root->appendNewControlValue(proc, Return, Origin());
compileAndRun<void>(proc);
}
void testInfiniteLoopDoesntCauseBadHoisting()
{
Procedure proc;
if (proc.optLevel() < 2)
return;
BasicBlock* root = proc.addBlock();
BasicBlock* header = proc.addBlock();
BasicBlock* loadBlock = proc.addBlock();
BasicBlock* postLoadBlock = proc.addBlock();
Value* arg = root->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR0);
root->appendNewControlValue(proc, Jump, Origin(), header);
header->appendNewControlValue(
proc, Branch, Origin(),
header->appendNew<Value>(proc, Equal, Origin(),
arg,
header->appendNew<Const64Value>(proc, Origin(), 10)), header, loadBlock);
PatchpointValue* patchpoint = loadBlock->appendNew<PatchpointValue>(proc, Void, Origin());
patchpoint->effects = Effects::none();
patchpoint->effects.writesLocalState = true; // Don't DCE this.
patchpoint->setGenerator(
[&] (CCallHelpers& jit, const StackmapGenerationParams&) {
// This works because we don't have callee saves.
jit.emitFunctionEpilogue();
jit.ret();
});
Value* badLoad = loadBlock->appendNew<MemoryValue>(proc, Load, Int64, Origin(), arg, 0);
loadBlock->appendNewControlValue(
proc, Branch, Origin(),
loadBlock->appendNew<Value>(proc, Equal, Origin(),
badLoad,
loadBlock->appendNew<Const64Value>(proc, Origin(), 45)), header, postLoadBlock);
postLoadBlock->appendNewControlValue(proc, Return, Origin(), badLoad);
// The patchpoint early ret() works because we don't have callee saves.
auto code = compileProc(proc);
RELEASE_ASSERT(!proc.calleeSaveRegisterAtOffsetList().size());
invoke<void>(*code, static_cast<uint64_t>(55)); // Shouldn't crash dereferncing 55.
}
static void testSimpleTuplePair(unsigned first, int64_t second)
{
Procedure proc;
BasicBlock* root = proc.addBlock();
PatchpointValue* patchpoint = root->appendNew<PatchpointValue>(proc, proc.addTuple({ Int32, Int64 }), Origin());
patchpoint->clobber(RegisterSet::macroScratchRegisters());
patchpoint->resultConstraints = { ValueRep::SomeRegister, ValueRep::SomeRegister };
patchpoint->setGenerator([&] (CCallHelpers& jit, const StackmapGenerationParams& params) {
AllowMacroScratchRegisterUsage allowScratch(jit);
jit.move(CCallHelpers::TrustedImm32(first), params[0].gpr());
jit.move(CCallHelpers::TrustedImm64(second), params[1].gpr());
});
Value* i32 = root->appendNew<Value>(proc, ZExt32, Origin(),
root->appendNew<ExtractValue>(proc, Origin(), Int32, patchpoint, 0));
Value* i64 = root->appendNew<ExtractValue>(proc, Origin(), Int64, patchpoint, 1);
root->appendNew<Value>(proc, Return, Origin(), root->appendNew<Value>(proc, Add, Origin(), i32, i64));
CHECK_EQ(compileAndRun<int64_t>(proc), first + second);
}
static void testSimpleTuplePairUnused(unsigned first, int64_t second)
{
Procedure proc;
BasicBlock* root = proc.addBlock();
PatchpointValue* patchpoint = root->appendNew<PatchpointValue>(proc, proc.addTuple({ Int32, Int64, Double }), Origin());
patchpoint->clobber(RegisterSet::macroScratchRegisters());
patchpoint->resultConstraints = { ValueRep::SomeRegister, ValueRep::SomeRegister, ValueRep::SomeRegister };
patchpoint->setGenerator([&] (CCallHelpers& jit, const StackmapGenerationParams& params) {
AllowMacroScratchRegisterUsage allowScratch(jit);
jit.move(CCallHelpers::TrustedImm32(first), params[0].gpr());
jit.move(CCallHelpers::TrustedImm64(second), params[1].gpr());
jit.moveDouble(CCallHelpers::Imm64(bitwise_cast<uint64_t>(0.0)), params[2].fpr());
});
Value* i32 = root->appendNew<Value>(proc, ZExt32, Origin(),
root->appendNew<ExtractValue>(proc, Origin(), Int32, patchpoint, 0));
Value* i64 = root->appendNew<ExtractValue>(proc, Origin(), Int64, patchpoint, 1);
root->appendNew<Value>(proc, Return, Origin(), root->appendNew<Value>(proc, Add, Origin(), i32, i64));
CHECK_EQ(compileAndRun<int64_t>(proc), first + second);
}
static void testSimpleTuplePairStack(unsigned first, int64_t second)
{
Procedure proc;
BasicBlock* root = proc.addBlock();
PatchpointValue* patchpoint = root->appendNew<PatchpointValue>(proc, proc.addTuple({ Int32, Int64 }), Origin());
patchpoint->clobber(RegisterSet::macroScratchRegisters());
patchpoint->resultConstraints = { ValueRep::SomeRegister, ValueRep::stackArgument(0) };
patchpoint->setGenerator([&] (CCallHelpers& jit, const StackmapGenerationParams& params) {
AllowMacroScratchRegisterUsage allowScratch(jit);
jit.move(CCallHelpers::TrustedImm32(first), params[0].gpr());
jit.store64(CCallHelpers::TrustedImm64(second), CCallHelpers::Address(CCallHelpers::framePointerRegister, params[1].offsetFromFP()));
});
Value* i32 = root->appendNew<Value>(proc, ZExt32, Origin(),
root->appendNew<ExtractValue>(proc, Origin(), Int32, patchpoint, 0));
Value* i64 = root->appendNew<ExtractValue>(proc, Origin(), Int64, patchpoint, 1);
root->appendNew<Value>(proc, Return, Origin(), root->appendNew<Value>(proc, Add, Origin(), i32, i64));
CHECK_EQ(compileAndRun<int64_t>(proc), first + second);
}
template<B3::TypeKind kind, typename ResultType>
static void testBottomTupleValue()
{
Procedure proc;
BasicBlock* root = proc.addBlock();
auto* tuple = root->appendNew<BottomTupleValue>(proc, Origin(), proc.addTuple({
kind, kind, kind, kind, kind,
kind, kind, kind, kind, kind,
kind, kind, kind, kind, kind,
kind, kind, kind, kind, kind,
kind, kind, kind, kind, kind,
kind, kind, kind, kind, kind,
kind, kind, kind, kind, kind,
kind, kind, kind, kind, kind,
kind, kind, kind, kind, kind,
kind, kind, kind, kind, kind,
}));
Value* result = root->appendNew<ExtractValue>(proc, Origin(), kind, tuple, 0);
root->appendNew<Value>(proc, Return, Origin(), result);
CHECK_EQ(compileAndRun<ResultType>(proc), 0);
}
template<B3::TypeKind kind, typename ResultType>
static void testTouchAllBottomTupleValue()
{
Procedure proc;
BasicBlock* root = proc.addBlock();
Type tupleType = proc.addTuple({
kind, kind, kind, kind, kind,
kind, kind, kind, kind, kind,
kind, kind, kind, kind, kind,
kind, kind, kind, kind, kind,
kind, kind, kind, kind, kind,
kind, kind, kind, kind, kind,
kind, kind, kind, kind, kind,
kind, kind, kind, kind, kind,
kind, kind, kind, kind, kind,
kind, kind, kind, kind, kind,
});
auto* tuple = root->appendNew<BottomTupleValue>(proc, Origin(), tupleType);
Value* result = root->appendNew<ExtractValue>(proc, Origin(), kind, tuple, 0);
for (unsigned index = 1; index < proc.resultCount(tupleType); ++index)
result = root->appendNew<Value>(proc, Add, Origin(), result, root->appendNew<ExtractValue>(proc, Origin(), kind, tuple, index));
root->appendNew<Value>(proc, Return, Origin(), result);
CHECK_EQ(compileAndRun<ResultType>(proc), 0);
}
template<bool shouldFixSSA>
static void tailDupedTuplePair(unsigned first, double second)
{
Procedure proc;
BasicBlock* root = proc.addBlock();
BasicBlock* truthy = proc.addBlock();
BasicBlock* falsey = proc.addBlock();
Type tupleType = proc.addTuple({ Int32, Double });
Variable* var = proc.addVariable(tupleType);
Value* test = root->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR0);
PatchpointValue* patchpoint = root->appendNew<PatchpointValue>(proc, tupleType, Origin());
patchpoint->clobber(RegisterSet::macroScratchRegisters());
patchpoint->resultConstraints = { ValueRep::SomeRegister, ValueRep::stackArgument(0) };
patchpoint->setGenerator([&] (CCallHelpers& jit, const StackmapGenerationParams& params) {
AllowMacroScratchRegisterUsage allowScratch(jit);
jit.move(CCallHelpers::TrustedImm32(first), params[0].gpr());
jit.store64(CCallHelpers::TrustedImm64(bitwise_cast<uint64_t>(second)), CCallHelpers::Address(CCallHelpers::framePointerRegister, params[1].offsetFromFP()));
});
root->appendNew<VariableValue>(proc, Set, Origin(), var, patchpoint);
root->appendNewControlValue(proc, Branch, Origin(), test, FrequentedBlock(truthy), FrequentedBlock(falsey));
auto addDup = [&] (BasicBlock* block) {
Value* tuple = block->appendNew<VariableValue>(proc, B3::Get, Origin(), var);
Value* i32 = block->appendNew<Value>(proc, ZExt32, Origin(),
block->appendNew<ExtractValue>(proc, Origin(), Int32, tuple, 0));
i32 = block->appendNew<Value>(proc, IToD, Origin(), i32);
Value* f64 = block->appendNew<ExtractValue>(proc, Origin(), Double, tuple, 1);
block->appendNew<Value>(proc, Return, Origin(), block->appendNew<Value>(proc, Add, Origin(), i32, f64));
};
addDup(truthy);
addDup(falsey);
proc.resetReachability();
if (shouldFixSSA)
fixSSA(proc);
CHECK_EQ(compileAndRun<double>(proc, first), first + second);
}
template<bool shouldFixSSA>
static void tuplePairVariableLoop(unsigned first, uint64_t second)
{
Procedure proc;
BasicBlock* root = proc.addBlock();
BasicBlock* body = proc.addBlock();
BasicBlock* exit = proc.addBlock();
Type tupleType = proc.addTuple({ Int32, Int64 });
Variable* var = proc.addVariable(tupleType);
{
Value* first = root->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR0);
Value* second = root->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR1);
PatchpointValue* patchpoint = root->appendNew<PatchpointValue>(proc, tupleType, Origin());
patchpoint->append({ first, ValueRep::SomeRegister });
patchpoint->append({ second, ValueRep::SomeRegister });
patchpoint->resultConstraints = { ValueRep::SomeEarlyRegister, ValueRep::SomeEarlyRegister };
patchpoint->setGenerator([&] (CCallHelpers& jit, const StackmapGenerationParams& params) {
jit.move(params[2].gpr(), params[0].gpr());
jit.move(params[3].gpr(), params[1].gpr());
});
root->appendNew<VariableValue>(proc, Set, Origin(), var, patchpoint);
root->appendNewControlValue(proc, Jump, Origin(), body);
}
{
Value* tuple = body->appendNew<VariableValue>(proc, B3::Get, Origin(), var);
Value* first = body->appendNew<ExtractValue>(proc, Origin(), Int32, tuple, 0);
Value* second = body->appendNew<ExtractValue>(proc, Origin(), Int64, tuple, 1);
PatchpointValue* patchpoint = body->appendNew<PatchpointValue>(proc, tupleType, Origin());
patchpoint->clobber(RegisterSet::macroScratchRegisters());
patchpoint->append({ first, ValueRep::SomeRegister });
patchpoint->append({ second, ValueRep::SomeRegister });
patchpoint->resultConstraints = { ValueRep::SomeEarlyRegister, ValueRep::stackArgument(0) };
patchpoint->setGenerator([&] (CCallHelpers& jit, const StackmapGenerationParams& params) {
AllowMacroScratchRegisterUsage allowScratch(jit);
CHECK(params[3].gpr() != params[0].gpr());
CHECK(params[2].gpr() != params[0].gpr());
jit.add64(CCallHelpers::TrustedImm32(1), params[3].gpr(), params[0].gpr());
jit.store64(params[0].gpr(), CCallHelpers::Address(CCallHelpers::framePointerRegister, params[1].offsetFromFP()));
jit.move(params[2].gpr(), params[0].gpr());
jit.urshift32(CCallHelpers::TrustedImm32(1), params[0].gpr());
});
body->appendNew<VariableValue>(proc, Set, Origin(), var, patchpoint);
Value* condition = body->appendNew<ExtractValue>(proc, Origin(), Int32, patchpoint, 0);
body->appendNewControlValue(proc, Branch, Origin(), condition, FrequentedBlock(body), FrequentedBlock(exit));
}
{
Value* tuple = exit->appendNew<VariableValue>(proc, B3::Get, Origin(), var);
Value* second = exit->appendNew<ExtractValue>(proc, Origin(), Int64, tuple, 1);
exit->appendNew<Value>(proc, Return, Origin(), second);
}
proc.resetReachability();
validate(proc);
if (shouldFixSSA)
fixSSA(proc);
CHECK_EQ(compileAndRun<uint64_t>(proc, first, second), second + (first ? getMSBSet(first) : first) + 1);
}
template<bool shouldFixSSA>
static void tupleNestedLoop(int32_t first, double second)
{
Procedure proc;
BasicBlock* root = proc.addBlock();
BasicBlock* outerLoop = proc.addBlock();
BasicBlock* innerLoop = proc.addBlock();
BasicBlock* outerContinuation = proc.addBlock();
Type tupleType = proc.addTuple({ Int32, Double, Int32 });
Variable* varOuter = proc.addVariable(tupleType);
Variable* varInner = proc.addVariable(tupleType);
Variable* tookInner = proc.addVariable(Int32);
{
Value* first = root->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR0);
Value* second = root->appendNew<ArgumentRegValue>(proc, Origin(), FPRInfo::argumentFPR0);
PatchpointValue* patchpoint = root->appendNew<PatchpointValue>(proc, tupleType, Origin());
patchpoint->append({ first, ValueRep::SomeRegisterWithClobber });
patchpoint->append({ second, ValueRep::SomeRegisterWithClobber });
patchpoint->resultConstraints = { ValueRep::SomeRegister, ValueRep::SomeRegister, ValueRep::SomeEarlyRegister };
patchpoint->setGenerator([&] (CCallHelpers& jit, const StackmapGenerationParams& params) {
jit.move(params[3].gpr(), params[0].gpr());
jit.move(params[0].gpr(), params[2].gpr());
jit.move(params[4].fpr(), params[1].fpr());
});
root->appendNew<VariableValue>(proc, Set, Origin(), varOuter, patchpoint);
root->appendNew<VariableValue>(proc, Set, Origin(), tookInner, root->appendIntConstant(proc, Origin(), Int32, 0));
root->appendNewControlValue(proc, Jump, Origin(), outerLoop);
}
{
Value* tuple = outerLoop->appendNew<VariableValue>(proc, B3::Get, Origin(), varOuter);
Value* first = outerLoop->appendNew<ExtractValue>(proc, Origin(), Int32, tuple, 0);
Value* second = outerLoop->appendNew<ExtractValue>(proc, Origin(), Double, tuple, 1);
Value* third = outerLoop->appendNew<VariableValue>(proc, B3::Get, Origin(), tookInner);
PatchpointValue* patchpoint = outerLoop->appendNew<PatchpointValue>(proc, tupleType, Origin());
patchpoint->clobber(RegisterSet::macroScratchRegisters());
patchpoint->append({ first, ValueRep::SomeRegisterWithClobber });
patchpoint->append({ second, ValueRep::SomeRegisterWithClobber });
patchpoint->append({ third, ValueRep::SomeRegisterWithClobber });
patchpoint->resultConstraints = { ValueRep::SomeRegister, ValueRep::SomeRegister, ValueRep::SomeRegister };
patchpoint->setGenerator([&] (CCallHelpers& jit, const StackmapGenerationParams& params) {
AllowMacroScratchRegisterUsage allowScratch(jit);
jit.move(params[3].gpr(), params[0].gpr());
jit.moveConditionally32(CCallHelpers::Equal, params[5].gpr(), CCallHelpers::TrustedImm32(0), params[0].gpr(), params[5].gpr(), params[2].gpr());
jit.move(params[4].fpr(), params[1].fpr());
});
outerLoop->appendNew<VariableValue>(proc, Set, Origin(), varOuter, patchpoint);
outerLoop->appendNew<VariableValue>(proc, Set, Origin(), varInner, patchpoint);
Value* condition = outerLoop->appendNew<ExtractValue>(proc, Origin(), Int32, patchpoint, 2);
outerLoop->appendNewControlValue(proc, Branch, Origin(), condition, FrequentedBlock(outerContinuation), FrequentedBlock(innerLoop));
}
{
Value* tuple = innerLoop->appendNew<VariableValue>(proc, B3::Get, Origin(), varInner);
Value* first = innerLoop->appendNew<ExtractValue>(proc, Origin(), Int32, tuple, 0);
Value* second = innerLoop->appendNew<ExtractValue>(proc, Origin(), Double, tuple, 1);
PatchpointValue* patchpoint = innerLoop->appendNew<PatchpointValue>(proc, tupleType, Origin());
patchpoint->clobber(RegisterSet::macroScratchRegisters());
patchpoint->append({ first, ValueRep::SomeRegisterWithClobber });
patchpoint->append({ second, ValueRep::SomeRegisterWithClobber });
patchpoint->resultConstraints = { ValueRep::SomeRegister, ValueRep::SomeRegister, ValueRep::SomeEarlyRegister };
patchpoint->setGenerator([&] (CCallHelpers& jit, const StackmapGenerationParams& params) {
AllowMacroScratchRegisterUsage allowScratch(jit);
jit.move(params[3].gpr(), params[0].gpr());
jit.move(CCallHelpers::TrustedImm32(0), params[2].gpr());
jit.move(params[4].fpr(), params[1].fpr());
});
innerLoop->appendNew<VariableValue>(proc, Set, Origin(), varOuter, patchpoint);
innerLoop->appendNew<VariableValue>(proc, Set, Origin(), varInner, patchpoint);
Value* condition = innerLoop->appendNew<ExtractValue>(proc, Origin(), Int32, patchpoint, 2);
innerLoop->appendNew<VariableValue>(proc, Set, Origin(), tookInner, innerLoop->appendIntConstant(proc, Origin(), Int32, 1));
innerLoop->appendNewControlValue(proc, Branch, Origin(), condition, FrequentedBlock(innerLoop), FrequentedBlock(outerLoop));
}
{
Value* tuple = outerContinuation->appendNew<VariableValue>(proc, B3::Get, Origin(), varInner);
Value* first = outerContinuation->appendNew<ExtractValue>(proc, Origin(), Int32, tuple, 0);
Value* second = outerContinuation->appendNew<ExtractValue>(proc, Origin(), Double, tuple, 1);
Value* result = outerContinuation->appendNew<Value>(proc, Add, Origin(), second, outerContinuation->appendNew<Value>(proc, IToD, Origin(), first));
outerContinuation->appendNewControlValue(proc, Return, Origin(), result);
}
proc.resetReachability();
validate(proc);
if (shouldFixSSA)
fixSSA(proc);
CHECK_EQ(compileAndRun<double>(proc, first, second), first + second);
}
void addTupleTests(const char* filter, Deque<RefPtr<SharedTask<void()>>>& tasks)
{
RUN_BINARY(testSimpleTuplePair, int32Operands(), int64Operands());
RUN_BINARY(testSimpleTuplePairUnused, int32Operands(), int64Operands());
RUN_BINARY(testSimpleTuplePairStack, int32Operands(), int64Operands());
RUN((testBottomTupleValue<Int32, int32_t>)());
RUN((testBottomTupleValue<Int64, int64_t>)());
RUN((testBottomTupleValue<Float, float>)());
RUN((testBottomTupleValue<Double, double>)());
RUN((testTouchAllBottomTupleValue<Int32, int32_t>)());
RUN((testTouchAllBottomTupleValue<Int64, int64_t>)());
RUN((testTouchAllBottomTupleValue<Float, float>)());
RUN((testTouchAllBottomTupleValue<Double, double>)());
// use int64 as second argument because checking for NaN is annoying and doesn't really matter for this test.
RUN_BINARY(tailDupedTuplePair<true>, int32Operands(), int64Operands());
RUN_BINARY(tailDupedTuplePair<false>, int32Operands(), int64Operands());
RUN_BINARY(tuplePairVariableLoop<true>, int32Operands(), int64Operands());
RUN_BINARY(tuplePairVariableLoop<false>, int32Operands(), int64Operands());
RUN_BINARY(tupleNestedLoop<true>, int32Operands(), int64Operands());
RUN_BINARY(tupleNestedLoop<false>, int32Operands(), int64Operands());
}
#endif // ENABLE(B3_JIT)