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[MLIR][WASM] Control flow, conversion and comparison in Wasm importer #154674

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[MLIR][WASM] Control flow, conversion and comparison in Wasm importer #154674

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d9f4d19
[mlir][wasm] Add support for comparison ops in importer
lforg37 Jul 2, 2025
1504224
[mlir][wasm] Support for conversion ops in Wasm importer
lforg37 Jul 2, 2025
f56e2a2
[mlir][wasm] Support for control flow related ops in Wasm importer
lforg37 Jul 2, 2025
91a9fb9
[WASM][MLIR] Fix dump method in Wasm importer
Aug 26, 2025
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71 changes: 71 additions & 0 deletions mlir/include/mlir/Target/Wasm/WasmBinaryEncoding.h
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Original file line number Diff line number Diff line change
Expand Up @@ -19,6 +19,14 @@ namespace mlir {
struct WasmBinaryEncoding {
/// Byte encodings for Wasm instructions.
struct OpCode {
// Control instructions.
static constexpr std::byte block{0x02};
static constexpr std::byte loop{0x03};
static constexpr std::byte ifOpCode{0x04};
static constexpr std::byte elseOpCode{0x05};
static constexpr std::byte branchIf{0x0D};
static constexpr std::byte call{0x10};

// Locals, globals, constants.
static constexpr std::byte localGet{0x20};
static constexpr std::byte localSet{0x21};
Expand All @@ -29,6 +37,42 @@ struct WasmBinaryEncoding {
static constexpr std::byte constFP32{0x43};
static constexpr std::byte constFP64{0x44};

// Comparisons.
static constexpr std::byte eqzI32{0x45};
static constexpr std::byte eqI32{0x46};
static constexpr std::byte neI32{0x47};
static constexpr std::byte ltSI32{0x48};
static constexpr std::byte ltUI32{0x49};
static constexpr std::byte gtSI32{0x4A};
static constexpr std::byte gtUI32{0x4B};
static constexpr std::byte leSI32{0x4C};
static constexpr std::byte leUI32{0x4D};
static constexpr std::byte geSI32{0x4E};
static constexpr std::byte geUI32{0x4F};
static constexpr std::byte eqzI64{0x50};
static constexpr std::byte eqI64{0x51};
static constexpr std::byte neI64{0x52};
static constexpr std::byte ltSI64{0x53};
static constexpr std::byte ltUI64{0x54};
static constexpr std::byte gtSI64{0x55};
static constexpr std::byte gtUI64{0x56};
static constexpr std::byte leSI64{0x57};
static constexpr std::byte leUI64{0x58};
static constexpr std::byte geSI64{0x59};
static constexpr std::byte geUI64{0x5A};
static constexpr std::byte eqF32{0x5B};
static constexpr std::byte neF32{0x5C};
static constexpr std::byte ltF32{0x5D};
static constexpr std::byte gtF32{0x5E};
static constexpr std::byte leF32{0x5F};
static constexpr std::byte geF32{0x60};
static constexpr std::byte eqF64{0x61};
static constexpr std::byte neF64{0x62};
static constexpr std::byte ltF64{0x63};
static constexpr std::byte gtF64{0x64};
static constexpr std::byte leF64{0x65};
static constexpr std::byte geF64{0x66};

// Numeric operations.
static constexpr std::byte clzI32{0x67};
static constexpr std::byte ctzI32{0x68};
Expand Down Expand Up @@ -93,6 +137,33 @@ struct WasmBinaryEncoding {
static constexpr std::byte maxF64{0xA5};
static constexpr std::byte copysignF64{0xA6};
static constexpr std::byte wrap{0xA7};

// Conversion operations
static constexpr std::byte extendS{0xAC};
static constexpr std::byte extendU{0xAD};
static constexpr std::byte convertSI32F32{0xB2};
static constexpr std::byte convertUI32F32{0xB3};
static constexpr std::byte convertSI64F32{0xB4};
static constexpr std::byte convertUI64F32{0xB5};

static constexpr std::byte demoteF64ToF32{0xB6};

static constexpr std::byte convertSI32F64{0xB7};
static constexpr std::byte convertUI32F64{0xB8};
static constexpr std::byte convertSI64F64{0xB9};
static constexpr std::byte convertUI64F64{0xBA};

static constexpr std::byte promoteF32ToF64{0xBB};
static constexpr std::byte reinterpretF32AsI32{0xBC};
static constexpr std::byte reinterpretF64AsI64{0xBD};
static constexpr std::byte reinterpretI32AsF32{0xBE};
static constexpr std::byte reinterpretI64AsF64{0xBF};

static constexpr std::byte extendI328S{0xC0};
static constexpr std::byte extendI3216S{0xC1};
static constexpr std::byte extendI648S{0xC2};
static constexpr std::byte extendI6416S{0xC3};
static constexpr std::byte extendI6432S{0xC4};
};

/// Byte encodings of types in Wasm binaries
Expand Down
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