[MLIR][WASM] Extending the Wasm binary to WasmSSA dialect importer (llvm#154053)

This is the continuation of  llvm#152131 

This PR adds support for parsing the global initializer and function
body, and support for decoding scalar numerical instructions and
variable related instructions.

---------

Co-authored-by: Ferdinand Lemaire <[email protected]>
Co-authored-by: Jessica Paquette <[email protected]>
Co-authored-by: Luc Forget <[email protected]>

Author: 4 people

mlir/include/mlir/Target/Wasm/WasmBinaryEncoding.h

@@ -20,10 +20,79 @@ struct WasmBinaryEncoding {
   /// Byte encodings for Wasm instructions.
   struct OpCode {
     // Locals, globals, constants.
+    static constexpr std::byte localGet{0x20};
+    static constexpr std::byte localSet{0x21};
+    static constexpr std::byte localTee{0x22};
+    static constexpr std::byte globalGet{0x23};
     static constexpr std::byte constI32{0x41};
     static constexpr std::byte constI64{0x42};
     static constexpr std::byte constFP32{0x43};
     static constexpr std::byte constFP64{0x44};
+
+    // Numeric operations.
+    static constexpr std::byte clzI32{0x67};
+    static constexpr std::byte ctzI32{0x68};
+    static constexpr std::byte popcntI32{0x69};
+    static constexpr std::byte addI32{0x6A};
+    static constexpr std::byte subI32{0x6B};
+    static constexpr std::byte mulI32{0x6C};
+    static constexpr std::byte divSI32{0x6d};
+    static constexpr std::byte divUI32{0x6e};
+    static constexpr std::byte remSI32{0x6f};
+    static constexpr std::byte remUI32{0x70};
+    static constexpr std::byte andI32{0x71};
+    static constexpr std::byte orI32{0x72};
+    static constexpr std::byte xorI32{0x73};
+    static constexpr std::byte shlI32{0x74};
+    static constexpr std::byte shrSI32{0x75};
+    static constexpr std::byte shrUI32{0x76};
+    static constexpr std::byte rotlI32{0x77};
+    static constexpr std::byte rotrI32{0x78};
+    static constexpr std::byte clzI64{0x79};
+    static constexpr std::byte ctzI64{0x7A};
+    static constexpr std::byte popcntI64{0x7B};
+    static constexpr std::byte addI64{0x7C};
+    static constexpr std::byte subI64{0x7D};
+    static constexpr std::byte mulI64{0x7E};
+    static constexpr std::byte divSI64{0x7F};
+    static constexpr std::byte divUI64{0x80};
+    static constexpr std::byte remSI64{0x81};
+    static constexpr std::byte remUI64{0x82};
+    static constexpr std::byte andI64{0x83};
+    static constexpr std::byte orI64{0x84};
+    static constexpr std::byte xorI64{0x85};
+    static constexpr std::byte shlI64{0x86};
+    static constexpr std::byte shrSI64{0x87};
+    static constexpr std::byte shrUI64{0x88};
+    static constexpr std::byte rotlI64{0x89};
+    static constexpr std::byte rotrI64{0x8A};
+    static constexpr std::byte absF32{0x8B};
+    static constexpr std::byte negF32{0x8C};
+    static constexpr std::byte ceilF32{0x8D};
+    static constexpr std::byte floorF32{0x8E};
+    static constexpr std::byte truncF32{0x8F};
+    static constexpr std::byte sqrtF32{0x91};
+    static constexpr std::byte addF32{0x92};
+    static constexpr std::byte subF32{0x93};
+    static constexpr std::byte mulF32{0x94};
+    static constexpr std::byte divF32{0x95};
+    static constexpr std::byte minF32{0x96};
+    static constexpr std::byte maxF32{0x97};
+    static constexpr std::byte copysignF32{0x98};
+    static constexpr std::byte absF64{0x99};
+    static constexpr std::byte negF64{0x9A};
+    static constexpr std::byte ceilF64{0x9B};
+    static constexpr std::byte floorF64{0x9C};
+    static constexpr std::byte truncF64{0x9D};
+    static constexpr std::byte sqrtF64{0x9F};
+    static constexpr std::byte addF64{0xA0};
+    static constexpr std::byte subF64{0xA1};
+    static constexpr std::byte mulF64{0xA2};
+    static constexpr std::byte divF64{0xA3};
+    static constexpr std::byte minF64{0xA4};
+    static constexpr std::byte maxF64{0xA5};
+    static constexpr std::byte copysignF64{0xA6};
+    static constexpr std::byte wrap{0xA7};
   };
 
   /// Byte encodings of types in Wasm binaries