mirror of
https://github.com/luau-lang/luau.git
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4b267aa5c5
* Added a limit on how many instructions the Compiler can safely produce (reported by @TheGreatSageEqualToHeaven) C++ API Changes: * With work started on read-only and write-only properties, `Property::type` member variable has been replaced with `TypeId type()` and `setType(TypeId)` functions. * New `LazyType` unwrap callback now has a `void` return type, all that's required from the callback is to write into `unwrapped` field. In our work on the new type solver, the following issues were fixed: * Work has started to support https://github.com/Roblox/luau/pull/77 and https://github.com/Roblox/luau/pull/79 * Refinements are no longer applied on l-values, removing some false-positive errors * Improved overload resolution against expected result type * `Frontend::prepareModuleScope` now works in the new solver * Cofinite strings are now comparable And these are the changes in native code generation (JIT): * Fixed MIN_NUM and MAX_NUM constant fold when one of the arguments is NaN * Added constant folding for number conversions and bit operations * Value spilling and rematerialization is now supported on arm64 * Improved FASTCALL2K IR generation to support second argument constant * Added value numbering and load/store propagation optimizations * Added STORE_VECTOR on arm64, completing the IR lowering on this target
522 lines
15 KiB
C++
522 lines
15 KiB
C++
// This file is part of the Luau programming language and is licensed under MIT License; see LICENSE.txt for details
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#include "Luau/AssemblyBuilderA64.h"
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#include "Luau/StringUtils.h"
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#include "doctest.h"
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#include <string.h>
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using namespace Luau::CodeGen;
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using namespace Luau::CodeGen::A64;
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static std::string bytecodeAsArray(const std::vector<uint8_t>& bytecode)
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{
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std::string result = "{";
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for (size_t i = 0; i < bytecode.size(); i++)
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Luau::formatAppend(result, "%s0x%02x", i == 0 ? "" : ", ", bytecode[i]);
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return result.append("}");
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}
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static std::string bytecodeAsArray(const std::vector<uint32_t>& code)
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{
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std::string result = "{";
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for (size_t i = 0; i < code.size(); i++)
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Luau::formatAppend(result, "%s0x%08x", i == 0 ? "" : ", ", code[i]);
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return result.append("}");
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}
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class AssemblyBuilderA64Fixture
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{
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public:
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bool check(void (*f)(AssemblyBuilderA64& build), std::vector<uint32_t> code, std::vector<uint8_t> data = {}, unsigned int features = 0)
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{
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AssemblyBuilderA64 build(/* logText= */ false, features);
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f(build);
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build.finalize();
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if (build.code != code)
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{
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printf("Expected code: %s\nReceived code: %s\n", bytecodeAsArray(code).c_str(), bytecodeAsArray(build.code).c_str());
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return false;
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}
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if (build.data != data)
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{
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printf("Expected data: %s\nReceived data: %s\n", bytecodeAsArray(data).c_str(), bytecodeAsArray(build.data).c_str());
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return false;
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}
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return true;
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}
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};
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// armconverter.com can be used to validate instruction sequences
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TEST_SUITE_BEGIN("A64Assembly");
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#define SINGLE_COMPARE(inst, ...) \
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CHECK(check( \
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[](AssemblyBuilderA64& build) { \
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build.inst; \
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}, \
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{__VA_ARGS__}))
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TEST_CASE_FIXTURE(AssemblyBuilderA64Fixture, "Unary")
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{
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SINGLE_COMPARE(neg(x0, x1), 0xCB0103E0);
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SINGLE_COMPARE(neg(w0, w1), 0x4B0103E0);
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SINGLE_COMPARE(mvn(x0, x1), 0xAA2103E0);
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SINGLE_COMPARE(clz(x0, x1), 0xDAC01020);
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SINGLE_COMPARE(clz(w0, w1), 0x5AC01020);
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SINGLE_COMPARE(rbit(x0, x1), 0xDAC00020);
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SINGLE_COMPARE(rbit(w0, w1), 0x5AC00020);
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}
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TEST_CASE_FIXTURE(AssemblyBuilderA64Fixture, "Binary")
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{
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// reg, reg
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SINGLE_COMPARE(add(x0, x1, x2), 0x8B020020);
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SINGLE_COMPARE(add(w0, w1, w2), 0x0B020020);
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SINGLE_COMPARE(add(x0, x1, x2, 7), 0x8B021C20);
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SINGLE_COMPARE(add(x0, x1, x2, -7), 0x8B421C20);
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SINGLE_COMPARE(sub(x0, x1, x2), 0xCB020020);
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SINGLE_COMPARE(and_(x0, x1, x2), 0x8A020020);
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SINGLE_COMPARE(and_(x0, x1, x2, 7), 0x8A021C20);
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SINGLE_COMPARE(and_(x0, x1, x2, -7), 0x8A421C20);
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SINGLE_COMPARE(bic(x0, x1, x2), 0x8A220020);
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SINGLE_COMPARE(orr(x0, x1, x2), 0xAA020020);
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SINGLE_COMPARE(eor(x0, x1, x2), 0xCA020020);
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SINGLE_COMPARE(lsl(x0, x1, x2), 0x9AC22020);
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SINGLE_COMPARE(lsl(w0, w1, w2), 0x1AC22020);
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SINGLE_COMPARE(lsr(x0, x1, x2), 0x9AC22420);
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SINGLE_COMPARE(asr(x0, x1, x2), 0x9AC22820);
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SINGLE_COMPARE(ror(x0, x1, x2), 0x9AC22C20);
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SINGLE_COMPARE(cmp(x0, x1), 0xEB01001F);
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SINGLE_COMPARE(tst(x0, x1), 0xEA01001F);
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// reg, imm
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SINGLE_COMPARE(add(x3, x7, 78), 0x910138E3);
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SINGLE_COMPARE(add(w3, w7, 78), 0x110138E3);
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SINGLE_COMPARE(sub(w3, w7, 78), 0x510138E3);
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SINGLE_COMPARE(cmp(w0, 42), 0x7100A81F);
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}
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TEST_CASE_FIXTURE(AssemblyBuilderA64Fixture, "BinaryImm")
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{
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// instructions
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SINGLE_COMPARE(and_(w1, w2, 1), 0x12000041);
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SINGLE_COMPARE(orr(w1, w2, 1), 0x32000041);
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SINGLE_COMPARE(eor(w1, w2, 1), 0x52000041);
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SINGLE_COMPARE(tst(w1, 1), 0x7200003f);
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// various mask forms
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SINGLE_COMPARE(and_(w0, w0, 1), 0x12000000);
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SINGLE_COMPARE(and_(w0, w0, 3), 0x12000400);
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SINGLE_COMPARE(and_(w0, w0, 7), 0x12000800);
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SINGLE_COMPARE(and_(w0, w0, 2147483647), 0x12007800);
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SINGLE_COMPARE(and_(w0, w0, 6), 0x121F0400);
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SINGLE_COMPARE(and_(w0, w0, 12), 0x121E0400);
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SINGLE_COMPARE(and_(w0, w0, 2147483648), 0x12010000);
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// shifts
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SINGLE_COMPARE(lsl(w1, w2, 1), 0x531F7841);
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SINGLE_COMPARE(lsl(x1, x2, 1), 0xD37FF841);
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SINGLE_COMPARE(lsr(w1, w2, 1), 0x53017C41);
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SINGLE_COMPARE(lsr(x1, x2, 1), 0xD341FC41);
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SINGLE_COMPARE(asr(w1, w2, 1), 0x13017C41);
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SINGLE_COMPARE(asr(x1, x2, 1), 0x9341FC41);
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SINGLE_COMPARE(ror(w1, w2, 1), 0x13820441);
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SINGLE_COMPARE(ror(x1, x2, 1), 0x93C20441);
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}
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TEST_CASE_FIXTURE(AssemblyBuilderA64Fixture, "Loads")
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{
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// address forms
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SINGLE_COMPARE(ldr(x0, x1), 0xF9400020);
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SINGLE_COMPARE(ldr(x0, mem(x1, 8)), 0xF9400420);
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SINGLE_COMPARE(ldr(x0, mem(x1, x7)), 0xF8676820);
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SINGLE_COMPARE(ldr(x0, mem(x1, -7)), 0xF85F9020);
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// load sizes
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SINGLE_COMPARE(ldr(x0, x1), 0xF9400020);
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SINGLE_COMPARE(ldr(w0, x1), 0xB9400020);
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SINGLE_COMPARE(ldrb(w0, x1), 0x39400020);
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SINGLE_COMPARE(ldrh(w0, x1), 0x79400020);
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SINGLE_COMPARE(ldrsb(x0, x1), 0x39800020);
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SINGLE_COMPARE(ldrsb(w0, x1), 0x39C00020);
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SINGLE_COMPARE(ldrsh(x0, x1), 0x79800020);
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SINGLE_COMPARE(ldrsh(w0, x1), 0x79C00020);
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SINGLE_COMPARE(ldrsw(x0, x1), 0xB9800020);
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// load sizes x offset scaling
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SINGLE_COMPARE(ldr(x0, mem(x1, 8)), 0xF9400420);
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SINGLE_COMPARE(ldr(w0, mem(x1, 8)), 0xB9400820);
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SINGLE_COMPARE(ldrb(w0, mem(x1, 8)), 0x39402020);
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SINGLE_COMPARE(ldrh(w0, mem(x1, 8)), 0x79401020);
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SINGLE_COMPARE(ldrsb(w0, mem(x1, 8)), 0x39C02020);
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SINGLE_COMPARE(ldrsh(w0, mem(x1, 8)), 0x79C01020);
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// paired loads
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SINGLE_COMPARE(ldp(x0, x1, mem(x2, 8)), 0xA9408440);
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SINGLE_COMPARE(ldp(w0, w1, mem(x2, -8)), 0x297F0440);
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}
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TEST_CASE_FIXTURE(AssemblyBuilderA64Fixture, "Stores")
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{
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// address forms
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SINGLE_COMPARE(str(x0, x1), 0xF9000020);
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SINGLE_COMPARE(str(x0, mem(x1, 8)), 0xF9000420);
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SINGLE_COMPARE(str(x0, mem(x1, x7)), 0xF8276820);
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SINGLE_COMPARE(strh(w0, mem(x1, -7)), 0x781F9020);
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// store sizes
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SINGLE_COMPARE(str(x0, x1), 0xF9000020);
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SINGLE_COMPARE(str(w0, x1), 0xB9000020);
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SINGLE_COMPARE(strb(w0, x1), 0x39000020);
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SINGLE_COMPARE(strh(w0, x1), 0x79000020);
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// store sizes x offset scaling
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SINGLE_COMPARE(str(x0, mem(x1, 8)), 0xF9000420);
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SINGLE_COMPARE(str(w0, mem(x1, 8)), 0xB9000820);
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SINGLE_COMPARE(strb(w0, mem(x1, 8)), 0x39002020);
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SINGLE_COMPARE(strh(w0, mem(x1, 8)), 0x79001020);
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// paired stores
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SINGLE_COMPARE(stp(x0, x1, mem(x2, 8)), 0xA9008440);
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SINGLE_COMPARE(stp(w0, w1, mem(x2, -8)), 0x293F0440);
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}
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TEST_CASE_FIXTURE(AssemblyBuilderA64Fixture, "Moves")
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{
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SINGLE_COMPARE(mov(x0, x1), 0xAA0103E0);
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SINGLE_COMPARE(mov(w0, w1), 0x2A0103E0);
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SINGLE_COMPARE(movz(x0, 42), 0xD2800540);
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SINGLE_COMPARE(movz(w0, 42), 0x52800540);
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SINGLE_COMPARE(movn(x0, 42), 0x92800540);
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SINGLE_COMPARE(movn(w0, 42), 0x12800540);
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SINGLE_COMPARE(movk(x0, 42, 16), 0xF2A00540);
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CHECK(check(
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[](AssemblyBuilderA64& build) {
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build.mov(x0, 42);
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},
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{0xD2800540}));
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CHECK(check(
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[](AssemblyBuilderA64& build) {
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build.mov(x0, 424242);
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},
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{0xD28F2640, 0xF2A000C0}));
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CHECK(check(
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[](AssemblyBuilderA64& build) {
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build.mov(x0, -42);
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},
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{0x92800520}));
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CHECK(check(
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[](AssemblyBuilderA64& build) {
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build.mov(x0, -424242);
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},
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{0x928F2620, 0xF2BFFF20}));
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CHECK(check(
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[](AssemblyBuilderA64& build) {
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build.mov(x0, -65536);
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},
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{0x929FFFE0}));
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CHECK(check(
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[](AssemblyBuilderA64& build) {
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build.mov(x0, -65537);
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},
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{0x92800000, 0xF2BFFFC0}));
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}
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TEST_CASE_FIXTURE(AssemblyBuilderA64Fixture, "ControlFlow")
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{
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// Jump back
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CHECK(check(
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[](AssemblyBuilderA64& build) {
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Label start = build.setLabel();
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build.mov(x0, x1);
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build.b(ConditionA64::Equal, start);
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},
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{0xAA0103E0, 0x54FFFFE0}));
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// Jump forward
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CHECK(check(
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[](AssemblyBuilderA64& build) {
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Label skip;
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build.b(ConditionA64::Equal, skip);
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build.mov(x0, x1);
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build.setLabel(skip);
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},
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{0x54000040, 0xAA0103E0}));
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// Jumps
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CHECK(check(
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[](AssemblyBuilderA64& build) {
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Label skip;
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build.b(ConditionA64::Equal, skip);
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build.cbz(x0, skip);
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build.cbnz(x0, skip);
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build.tbz(x0, 5, skip);
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build.tbnz(x0, 5, skip);
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build.setLabel(skip);
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build.b(skip);
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build.bl(skip);
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},
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{0x540000A0, 0xB4000080, 0xB5000060, 0x36280040, 0x37280020, 0x14000000, 0x97ffffff}));
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// Basic control flow
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SINGLE_COMPARE(br(x0), 0xD61F0000);
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SINGLE_COMPARE(blr(x0), 0xD63F0000);
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SINGLE_COMPARE(ret(), 0xD65F03C0);
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}
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TEST_CASE_FIXTURE(AssemblyBuilderA64Fixture, "StackOps")
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{
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SINGLE_COMPARE(mov(x0, sp), 0x910003E0);
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SINGLE_COMPARE(mov(sp, x0), 0x9100001F);
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SINGLE_COMPARE(add(sp, sp, 4), 0x910013FF);
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SINGLE_COMPARE(sub(sp, sp, 4), 0xD10013FF);
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SINGLE_COMPARE(add(x0, sp, 4), 0x910013E0);
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SINGLE_COMPARE(sub(sp, x0, 4), 0xD100101F);
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SINGLE_COMPARE(ldr(x0, mem(sp, 8)), 0xF94007E0);
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SINGLE_COMPARE(str(x0, mem(sp, 8)), 0xF90007E0);
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}
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TEST_CASE_FIXTURE(AssemblyBuilderA64Fixture, "Constants")
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{
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// clang-format off
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CHECK(check(
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[](AssemblyBuilderA64& build) {
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char arr[12] = "hello world";
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build.adr(x0, arr, 12);
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build.adr(x0, uint64_t(0x1234567887654321));
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build.adr(x0, 1.0);
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},
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{
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0x10ffffa0, 0x10ffff20, 0x10fffec0
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},
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{
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xf0, 0x3f,
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0x21, 0x43, 0x65, 0x87, 0x78, 0x56, 0x34, 0x12,
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0x00, 0x00, 0x00, 0x00, // 4b padding to align double
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'h', 'e', 'l', 'l', 'o', ' ', 'w', 'o', 'r', 'l', 'd', 0x0,
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}));
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// clang-format on
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}
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TEST_CASE_FIXTURE(AssemblyBuilderA64Fixture, "AddressOfLabel")
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{
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// clang-format off
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CHECK(check(
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[](AssemblyBuilderA64& build) {
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Label label;
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build.adr(x0, label);
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build.add(x0, x0, x0);
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build.setLabel(label);
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},
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{
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0x10000040, 0x8b000000,
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}));
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// clang-format on
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}
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TEST_CASE_FIXTURE(AssemblyBuilderA64Fixture, "FPBasic")
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{
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SINGLE_COMPARE(fmov(d0, d1), 0x1E604020);
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}
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TEST_CASE_FIXTURE(AssemblyBuilderA64Fixture, "FPMath")
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{
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SINGLE_COMPARE(fabs(d1, d2), 0x1E60C041);
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SINGLE_COMPARE(fadd(d1, d2, d3), 0x1E632841);
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SINGLE_COMPARE(fdiv(d1, d2, d3), 0x1E631841);
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SINGLE_COMPARE(fmul(d1, d2, d3), 0x1E630841);
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SINGLE_COMPARE(fneg(d1, d2), 0x1E614041);
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SINGLE_COMPARE(fsqrt(d1, d2), 0x1E61C041);
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SINGLE_COMPARE(fsub(d1, d2, d3), 0x1E633841);
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SINGLE_COMPARE(frinta(d1, d2), 0x1E664041);
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SINGLE_COMPARE(frintm(d1, d2), 0x1E654041);
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SINGLE_COMPARE(frintp(d1, d2), 0x1E64C041);
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SINGLE_COMPARE(fcvt(s1, d2), 0x1E624041);
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SINGLE_COMPARE(fcvt(d1, s2), 0x1E22C041);
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SINGLE_COMPARE(fcvtzs(w1, d2), 0x1E780041);
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SINGLE_COMPARE(fcvtzs(x1, d2), 0x9E780041);
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SINGLE_COMPARE(fcvtzu(w1, d2), 0x1E790041);
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SINGLE_COMPARE(fcvtzu(x1, d2), 0x9E790041);
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SINGLE_COMPARE(scvtf(d1, w2), 0x1E620041);
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SINGLE_COMPARE(scvtf(d1, x2), 0x9E620041);
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SINGLE_COMPARE(ucvtf(d1, w2), 0x1E630041);
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SINGLE_COMPARE(ucvtf(d1, x2), 0x9E630041);
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CHECK(check(
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[](AssemblyBuilderA64& build) {
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build.fjcvtzs(w1, d2);
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},
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{0x1E7E0041}, {}, A64::Feature_JSCVT));
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}
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TEST_CASE_FIXTURE(AssemblyBuilderA64Fixture, "FPLoadStore")
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{
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// address forms
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SINGLE_COMPARE(ldr(d0, x1), 0xFD400020);
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SINGLE_COMPARE(ldr(d0, mem(x1, 8)), 0xFD400420);
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SINGLE_COMPARE(ldr(d0, mem(x1, x7)), 0xFC676820);
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SINGLE_COMPARE(ldr(d0, mem(x1, -7)), 0xFC5F9020);
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SINGLE_COMPARE(str(d0, x1), 0xFD000020);
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SINGLE_COMPARE(str(d0, mem(x1, 8)), 0xFD000420);
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SINGLE_COMPARE(str(d0, mem(x1, x7)), 0xFC276820);
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SINGLE_COMPARE(str(d0, mem(x1, -7)), 0xFC1F9020);
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// load/store sizes
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SINGLE_COMPARE(ldr(s0, x1), 0xBD400020);
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SINGLE_COMPARE(ldr(d0, x1), 0xFD400020);
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SINGLE_COMPARE(ldr(q0, x1), 0x3DC00020);
|
|
SINGLE_COMPARE(str(s0, x1), 0xBD000020);
|
|
SINGLE_COMPARE(str(d0, x1), 0xFD000020);
|
|
SINGLE_COMPARE(str(q0, x1), 0x3D800020);
|
|
|
|
// load/store sizes x offset scaling
|
|
SINGLE_COMPARE(ldr(q0, mem(x1, 16)), 0x3DC00420);
|
|
SINGLE_COMPARE(ldr(d0, mem(x1, 16)), 0xFD400820);
|
|
SINGLE_COMPARE(ldr(s0, mem(x1, 16)), 0xBD401020);
|
|
SINGLE_COMPARE(str(q0, mem(x1, 16)), 0x3D800420);
|
|
SINGLE_COMPARE(str(d0, mem(x1, 16)), 0xFD000820);
|
|
SINGLE_COMPARE(str(s0, mem(x1, 16)), 0xBD001020);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(AssemblyBuilderA64Fixture, "FPCompare")
|
|
{
|
|
SINGLE_COMPARE(fcmp(d0, d1), 0x1E612000);
|
|
SINGLE_COMPARE(fcmpz(d1), 0x1E602028);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(AssemblyBuilderA64Fixture, "FPImm")
|
|
{
|
|
SINGLE_COMPARE(fmov(d0, 0), 0x2F00E400);
|
|
SINGLE_COMPARE(fmov(d0, 0.125), 0x1E681000);
|
|
SINGLE_COMPARE(fmov(d0, -0.125), 0x1E781000);
|
|
|
|
CHECK(!AssemblyBuilderA64::isFmovSupported(-0.0));
|
|
CHECK(!AssemblyBuilderA64::isFmovSupported(0.12389));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(AssemblyBuilderA64Fixture, "AddressOffsetSize")
|
|
{
|
|
SINGLE_COMPARE(ldr(w0, mem(x1, 16)), 0xB9401020);
|
|
SINGLE_COMPARE(ldr(x0, mem(x1, 16)), 0xF9400820);
|
|
SINGLE_COMPARE(ldr(d0, mem(x1, 16)), 0xFD400820);
|
|
SINGLE_COMPARE(ldr(q0, mem(x1, 16)), 0x3DC00420);
|
|
|
|
SINGLE_COMPARE(str(w0, mem(x1, 16)), 0xB9001020);
|
|
SINGLE_COMPARE(str(x0, mem(x1, 16)), 0xF9000820);
|
|
SINGLE_COMPARE(str(d0, mem(x1, 16)), 0xFD000820);
|
|
SINGLE_COMPARE(str(q0, mem(x1, 16)), 0x3D800420);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(AssemblyBuilderA64Fixture, "Conditionals")
|
|
{
|
|
SINGLE_COMPARE(csel(x0, x1, x2, ConditionA64::Equal), 0x9A820020);
|
|
SINGLE_COMPARE(csel(w0, w1, w2, ConditionA64::Equal), 0x1A820020);
|
|
SINGLE_COMPARE(fcsel(d0, d1, d2, ConditionA64::Equal), 0x1E620C20);
|
|
|
|
SINGLE_COMPARE(cset(x1, ConditionA64::Less), 0x9A9FA7E1);
|
|
}
|
|
|
|
TEST_CASE("LogTest")
|
|
{
|
|
AssemblyBuilderA64 build(/* logText= */ true);
|
|
|
|
build.add(sp, sp, 4);
|
|
build.add(w0, w1, w2);
|
|
build.add(x0, x1, x2, 2);
|
|
build.add(x0, x1, x2, -2);
|
|
build.add(w7, w8, 5);
|
|
build.add(x7, x8, 5);
|
|
build.ldr(x7, x8);
|
|
build.ldr(x7, mem(x8, 8));
|
|
build.ldr(x7, mem(x8, x9));
|
|
build.mov(x1, x2);
|
|
build.movk(x1, 42, 16);
|
|
build.cmp(x1, x2);
|
|
build.blr(x0);
|
|
|
|
Label l;
|
|
build.b(ConditionA64::Plus, l);
|
|
build.cbz(x7, l);
|
|
|
|
build.ldp(x0, x1, mem(x8, 8));
|
|
build.adr(x0, l);
|
|
|
|
build.fabs(d1, d2);
|
|
build.ldr(q1, x2);
|
|
|
|
build.csel(x0, x1, x2, ConditionA64::Equal);
|
|
build.cset(x0, ConditionA64::Equal);
|
|
|
|
build.fcmp(d0, d1);
|
|
build.fcmpz(d0);
|
|
|
|
build.fmov(d0, 0.25);
|
|
build.tbz(x0, 5, l);
|
|
|
|
build.fcvt(s1, d2);
|
|
|
|
build.setLabel(l);
|
|
build.ret();
|
|
|
|
build.finalize();
|
|
|
|
std::string expected = R"(
|
|
add sp,sp,#4
|
|
add w0,w1,w2
|
|
add x0,x1,x2 LSL #2
|
|
add x0,x1,x2 LSR #2
|
|
add w7,w8,#5
|
|
add x7,x8,#5
|
|
ldr x7,[x8]
|
|
ldr x7,[x8,#8]
|
|
ldr x7,[x8,x9]
|
|
mov x1,x2
|
|
movk x1,#42 LSL #16
|
|
cmp x1,x2
|
|
blr x0
|
|
b.pl .L1
|
|
cbz x7,.L1
|
|
ldp x0,x1,[x8,#8]
|
|
adr x0,.L1
|
|
fabs d1,d2
|
|
ldr q1,[x2]
|
|
csel x0,x1,x2,eq
|
|
cset x0,eq
|
|
fcmp d0,d1
|
|
fcmp d0,#0
|
|
fmov d0,#0.25
|
|
tbz x0,#5,.L1
|
|
fcvt s1,d2
|
|
.L1:
|
|
ret
|
|
)";
|
|
|
|
CHECK("\n" + build.text == expected);
|
|
}
|
|
|
|
TEST_SUITE_END();
|