[WebAssembly] Added default stack-only instruction mode for MC.

Summary:
Made it convert from register to stack based instructions, and removed the registers.
Fixes to related code that was expecting register based instructions.
Added the correct testing flag to all tests, depending on what the
format they were expecting so far.
Translated one test to stack format as example: reg-stackify-stack.ll

tested:
llvm-lit -v `find test -name WebAssembly`
unittests/MC/*

Reviewers: dschuff, sunfish

Subscribers: sbc100, jgravelle-google, eraman, aheejin, llvm-commits, jfb

Differential Revision: https://reviews.llvm.org/D51241

llvm-svn: 340750

1 files changed, 409 insertions, 0 deletions

diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyMCInstLower.cpp b/llvm/lib/Target/WebAssembly/WebAssemblyMCInstLower.cpp
index 5a9e3c6..54bb680 100644
--- a/llvm/lib/Target/WebAssembly/WebAssemblyMCInstLower.cpp
+++ b/llvm/lib/Target/WebAssembly/WebAssemblyMCInstLower.cpp
@@ -30,6 +30,17 @@
 #include "llvm/Support/raw_ostream.h"
 using namespace llvm;
 
+// This disables the removal of registers when lowering into MC, as required
+// by some current tests.
+static cl::opt<bool> WasmKeepRegisters(
+    "wasm-keep-registers", cl::Hidden,
+    cl::desc("WebAssembly: output stack registers in"
+             " instruction output for test purposes only."),
+    cl::init(false));
+
+static unsigned regInstructionToStackInstruction(unsigned OpCode);
+static void removeRegisterOperands(const MachineInstr *MI, MCInst &OutMI);
+
 MCSymbol *
 WebAssemblyMCInstLower::GetGlobalAddressSymbol(const MachineOperand &MO) const {
   const GlobalValue *Global = MO.getGlobal();
@@ -235,4 +246,402 @@ void WebAssemblyMCInstLower::Lower(const MachineInstr *MI,
 
     OutMI.addOperand(MCOp);
   }
+
+  if (!WasmKeepRegisters)
+    removeRegisterOperands(MI, OutMI);
+}
+
+static void removeRegisterOperands(const MachineInstr *MI, MCInst &OutMI) {
+  // Remove all uses of stackified registers to bring the instruction format
+  // into its final stack form used thruout MC, and transition opcodes to
+  // their _S variant.
+  // We do this seperate from the above code that still may need these
+  // registers for e.g. call_indirect signatures.
+  // See comments in lib/Target/WebAssembly/WebAssemblyInstrFormats.td for
+  // details.
+  // TODO: the code above creates new registers which are then removed here.
+  // That code could be slightly simplified by not doing that, though maybe
+  // it is simpler conceptually to keep the code above in "register mode"
+  // until this transition point.
+  // FIXME: we are not processing inline assembly, which contains register
+  // operands, because it is used by later target generic code.
+  if (MI->isDebugInstr() || MI->isLabel() || MI->isInlineAsm())
+    return;
+
+  // Transform to _S instruction.
+  auto RegOpcode = OutMI.getOpcode();
+  auto StackOpcode = regInstructionToStackInstruction(RegOpcode);
+  OutMI.setOpcode(StackOpcode);
+
+  // Remove register operands.
+  for (auto I = OutMI.getNumOperands(); I; --I) {
+    auto &MO = OutMI.getOperand(I - 1);
+    if (MO.isReg()) {
+      OutMI.erase(&MO);
+    }
+  }
+}
+
+static unsigned regInstructionToStackInstruction(unsigned OpCode) {
+  switch (OpCode) {
+  default:
+    // You may hit this if you add new instructions, please add them below.
+    // For most of these opcodes, this function could have been implemented
+    // as "return OpCode + 1", but since table-gen alphabetically sorts them,
+    // this cannot be guaranteed (see e.g. BR and BR_IF).
+    // The approach below is the same as what the x87 backend does.
+    // TODO(wvo): to make this code cleaner, create a custom tablegen
+    // code generator that emits the table below automatically.
+    llvm_unreachable(
+          "unknown WebAssembly instruction in Explicit Locals pass");
+  case WebAssembly::ABS_F32: return WebAssembly::ABS_F32_S;
+  case WebAssembly::ABS_F64: return WebAssembly::ABS_F64_S;
+  case WebAssembly::ADD_F32: return WebAssembly::ADD_F32_S;
+  case WebAssembly::ADD_F64: return WebAssembly::ADD_F64_S;
+  case WebAssembly::ADD_I32: return WebAssembly::ADD_I32_S;
+  case WebAssembly::ADD_I64: return WebAssembly::ADD_I64_S;
+  case WebAssembly::ADD_v16i8: return WebAssembly::ADD_v16i8_S;
+  case WebAssembly::ADD_v2f64: return WebAssembly::ADD_v2f64_S;
+  case WebAssembly::ADD_v2i64: return WebAssembly::ADD_v2i64_S;
+  case WebAssembly::ADD_v4f32: return WebAssembly::ADD_v4f32_S;
+  case WebAssembly::ADD_v4i32: return WebAssembly::ADD_v4i32_S;
+  case WebAssembly::ADD_v8i16: return WebAssembly::ADD_v8i16_S;
+  case WebAssembly::ADJCALLSTACKDOWN: return WebAssembly::ADJCALLSTACKDOWN_S;
+  case WebAssembly::ADJCALLSTACKUP: return WebAssembly::ADJCALLSTACKUP_S;
+  case WebAssembly::AND_I32: return WebAssembly::AND_I32_S;
+  case WebAssembly::AND_I64: return WebAssembly::AND_I64_S;
+  case WebAssembly::ARGUMENT_EXCEPT_REF: return WebAssembly::ARGUMENT_EXCEPT_REF_S;
+  case WebAssembly::ARGUMENT_F32: return WebAssembly::ARGUMENT_F32_S;
+  case WebAssembly::ARGUMENT_F64: return WebAssembly::ARGUMENT_F64_S;
+  case WebAssembly::ARGUMENT_I32: return WebAssembly::ARGUMENT_I32_S;
+  case WebAssembly::ARGUMENT_I64: return WebAssembly::ARGUMENT_I64_S;
+  case WebAssembly::ARGUMENT_v16i8: return WebAssembly::ARGUMENT_v16i8_S;
+  case WebAssembly::ARGUMENT_v4f32: return WebAssembly::ARGUMENT_v4f32_S;
+  case WebAssembly::ARGUMENT_v4i32: return WebAssembly::ARGUMENT_v4i32_S;
+  case WebAssembly::ARGUMENT_v8i16: return WebAssembly::ARGUMENT_v8i16_S;
+  case WebAssembly::ARGUMENT_v2f64: return WebAssembly::ARGUMENT_v2f64_S;
+  case WebAssembly::ARGUMENT_v2i64: return WebAssembly::ARGUMENT_v2i64_S;
+  case WebAssembly::ATOMIC_LOAD16_U_I32: return WebAssembly::ATOMIC_LOAD16_U_I32_S;
+  case WebAssembly::ATOMIC_LOAD16_U_I64: return WebAssembly::ATOMIC_LOAD16_U_I64_S;
+  case WebAssembly::ATOMIC_LOAD32_U_I64: return WebAssembly::ATOMIC_LOAD32_U_I64_S;
+  case WebAssembly::ATOMIC_LOAD8_U_I32: return WebAssembly::ATOMIC_LOAD8_U_I32_S;
+  case WebAssembly::ATOMIC_LOAD8_U_I64: return WebAssembly::ATOMIC_LOAD8_U_I64_S;
+  case WebAssembly::ATOMIC_LOAD_I32: return WebAssembly::ATOMIC_LOAD_I32_S;
+  case WebAssembly::ATOMIC_LOAD_I64: return WebAssembly::ATOMIC_LOAD_I64_S;
+  case WebAssembly::ATOMIC_STORE16_I32: return WebAssembly::ATOMIC_STORE16_I32_S;
+  case WebAssembly::ATOMIC_STORE16_I64: return WebAssembly::ATOMIC_STORE16_I64_S;
+  case WebAssembly::ATOMIC_STORE32_I64: return WebAssembly::ATOMIC_STORE32_I64_S;
+  case WebAssembly::ATOMIC_STORE8_I32: return WebAssembly::ATOMIC_STORE8_I32_S;
+  case WebAssembly::ATOMIC_STORE8_I64: return WebAssembly::ATOMIC_STORE8_I64_S;
+  case WebAssembly::ATOMIC_STORE_I32: return WebAssembly::ATOMIC_STORE_I32_S;
+  case WebAssembly::ATOMIC_STORE_I64: return WebAssembly::ATOMIC_STORE_I64_S;
+  case WebAssembly::BLOCK: return WebAssembly::BLOCK_S;
+  case WebAssembly::BR: return WebAssembly::BR_S;
+  case WebAssembly::BR_IF: return WebAssembly::BR_IF_S;
+  case WebAssembly::BR_TABLE_I32: return WebAssembly::BR_TABLE_I32_S;
+  case WebAssembly::BR_TABLE_I64: return WebAssembly::BR_TABLE_I64_S;
+  case WebAssembly::BR_UNLESS: return WebAssembly::BR_UNLESS_S;
+  case WebAssembly::CALL_EXCEPT_REF: return WebAssembly::CALL_EXCEPT_REF_S;
+  case WebAssembly::CALL_F32: return WebAssembly::CALL_F32_S;
+  case WebAssembly::CALL_F64: return WebAssembly::CALL_F64_S;
+  case WebAssembly::CALL_I32: return WebAssembly::CALL_I32_S;
+  case WebAssembly::CALL_I64: return WebAssembly::CALL_I64_S;
+  case WebAssembly::CALL_INDIRECT_EXCEPT_REF: return WebAssembly::CALL_INDIRECT_EXCEPT_REF_S;
+  case WebAssembly::CALL_INDIRECT_F32: return WebAssembly::CALL_INDIRECT_F32_S;
+  case WebAssembly::CALL_INDIRECT_F64: return WebAssembly::CALL_INDIRECT_F64_S;
+  case WebAssembly::CALL_INDIRECT_I32: return WebAssembly::CALL_INDIRECT_I32_S;
+  case WebAssembly::CALL_INDIRECT_I64: return WebAssembly::CALL_INDIRECT_I64_S;
+  case WebAssembly::CALL_INDIRECT_VOID: return WebAssembly::CALL_INDIRECT_VOID_S;
+  case WebAssembly::CALL_INDIRECT_v16i8: return WebAssembly::CALL_INDIRECT_v16i8_S;
+  case WebAssembly::CALL_INDIRECT_v4f32: return WebAssembly::CALL_INDIRECT_v4f32_S;
+  case WebAssembly::CALL_INDIRECT_v4i32: return WebAssembly::CALL_INDIRECT_v4i32_S;
+  case WebAssembly::CALL_INDIRECT_v8i16: return WebAssembly::CALL_INDIRECT_v8i16_S;
+  case WebAssembly::CALL_VOID: return WebAssembly::CALL_VOID_S;
+  case WebAssembly::CALL_v16i8: return WebAssembly::CALL_v16i8_S;
+  case WebAssembly::CALL_v4f32: return WebAssembly::CALL_v4f32_S;
+  case WebAssembly::CALL_v4i32: return WebAssembly::CALL_v4i32_S;
+  case WebAssembly::CALL_v8i16: return WebAssembly::CALL_v8i16_S;
+  case WebAssembly::CATCHRET: return WebAssembly::CATCHRET_S;
+  case WebAssembly::CATCH_ALL: return WebAssembly::CATCH_ALL_S;
+  case WebAssembly::CATCH_I32: return WebAssembly::CATCH_I32_S;
+  case WebAssembly::CATCH_I64: return WebAssembly::CATCH_I64_S;
+  case WebAssembly::CEIL_F32: return WebAssembly::CEIL_F32_S;
+  case WebAssembly::CEIL_F64: return WebAssembly::CEIL_F64_S;
+  case WebAssembly::CLEANUPRET: return WebAssembly::CLEANUPRET_S;
+  case WebAssembly::CLZ_I32: return WebAssembly::CLZ_I32_S;
+  case WebAssembly::CLZ_I64: return WebAssembly::CLZ_I64_S;
+  case WebAssembly::CONST_F32: return WebAssembly::CONST_F32_S;
+  case WebAssembly::CONST_F64: return WebAssembly::CONST_F64_S;
+  case WebAssembly::CONST_I32: return WebAssembly::CONST_I32_S;
+  case WebAssembly::CONST_I64: return WebAssembly::CONST_I64_S;
+  case WebAssembly::COPYSIGN_F32: return WebAssembly::COPYSIGN_F32_S;
+  case WebAssembly::COPYSIGN_F64: return WebAssembly::COPYSIGN_F64_S;
+  case WebAssembly::COPY_EXCEPT_REF: return WebAssembly::COPY_EXCEPT_REF_S;
+  case WebAssembly::COPY_F32: return WebAssembly::COPY_F32_S;
+  case WebAssembly::COPY_F64: return WebAssembly::COPY_F64_S;
+  case WebAssembly::COPY_I32: return WebAssembly::COPY_I32_S;
+  case WebAssembly::COPY_I64: return WebAssembly::COPY_I64_S;
+  case WebAssembly::COPY_V128: return WebAssembly::COPY_V128_S;
+  case WebAssembly::CTZ_I32: return WebAssembly::CTZ_I32_S;
+  case WebAssembly::CTZ_I64: return WebAssembly::CTZ_I64_S;
+  case WebAssembly::CURRENT_MEMORY_I32: return WebAssembly::CURRENT_MEMORY_I32_S;
+  case WebAssembly::DIV_F32: return WebAssembly::DIV_F32_S;
+  case WebAssembly::DIV_F64: return WebAssembly::DIV_F64_S;
+  case WebAssembly::DIV_S_I32: return WebAssembly::DIV_S_I32_S;
+  case WebAssembly::DIV_S_I64: return WebAssembly::DIV_S_I64_S;
+  case WebAssembly::DIV_U_I32: return WebAssembly::DIV_U_I32_S;
+  case WebAssembly::DIV_U_I64: return WebAssembly::DIV_U_I64_S;
+  case WebAssembly::DROP_EXCEPT_REF: return WebAssembly::DROP_EXCEPT_REF_S;
+  case WebAssembly::DROP_F32: return WebAssembly::DROP_F32_S;
+  case WebAssembly::DROP_F64: return WebAssembly::DROP_F64_S;
+  case WebAssembly::DROP_I32: return WebAssembly::DROP_I32_S;
+  case WebAssembly::DROP_I64: return WebAssembly::DROP_I64_S;
+  case WebAssembly::DROP_V128: return WebAssembly::DROP_V128_S;
+  case WebAssembly::END_BLOCK: return WebAssembly::END_BLOCK_S;
+  case WebAssembly::END_FUNCTION: return WebAssembly::END_FUNCTION_S;
+  case WebAssembly::END_LOOP: return WebAssembly::END_LOOP_S;
+  case WebAssembly::END_TRY: return WebAssembly::END_TRY_S;
+  case WebAssembly::EQZ_I32: return WebAssembly::EQZ_I32_S;
+  case WebAssembly::EQZ_I64: return WebAssembly::EQZ_I64_S;
+  case WebAssembly::EQ_F32: return WebAssembly::EQ_F32_S;
+  case WebAssembly::EQ_F64: return WebAssembly::EQ_F64_S;
+  case WebAssembly::EQ_I32: return WebAssembly::EQ_I32_S;
+  case WebAssembly::EQ_I64: return WebAssembly::EQ_I64_S;
+  case WebAssembly::F32_CONVERT_S_I32: return WebAssembly::F32_CONVERT_S_I32_S;
+  case WebAssembly::F32_CONVERT_S_I64: return WebAssembly::F32_CONVERT_S_I64_S;
+  case WebAssembly::F32_CONVERT_U_I32: return WebAssembly::F32_CONVERT_U_I32_S;
+  case WebAssembly::F32_CONVERT_U_I64: return WebAssembly::F32_CONVERT_U_I64_S;
+  case WebAssembly::F32_DEMOTE_F64: return WebAssembly::F32_DEMOTE_F64_S;
+  case WebAssembly::F32_REINTERPRET_I32: return WebAssembly::F32_REINTERPRET_I32_S;
+  case WebAssembly::F64_CONVERT_S_I32: return WebAssembly::F64_CONVERT_S_I32_S;
+  case WebAssembly::F64_CONVERT_S_I64: return WebAssembly::F64_CONVERT_S_I64_S;
+  case WebAssembly::F64_CONVERT_U_I32: return WebAssembly::F64_CONVERT_U_I32_S;
+  case WebAssembly::F64_CONVERT_U_I64: return WebAssembly::F64_CONVERT_U_I64_S;
+  case WebAssembly::F64_PROMOTE_F32: return WebAssembly::F64_PROMOTE_F32_S;
+  case WebAssembly::F64_REINTERPRET_I64: return WebAssembly::F64_REINTERPRET_I64_S;
+  case WebAssembly::FALLTHROUGH_RETURN_EXCEPT_REF: return WebAssembly::FALLTHROUGH_RETURN_EXCEPT_REF_S;
+  case WebAssembly::FALLTHROUGH_RETURN_F32: return WebAssembly::FALLTHROUGH_RETURN_F32_S;
+  case WebAssembly::FALLTHROUGH_RETURN_F64: return WebAssembly::FALLTHROUGH_RETURN_F64_S;
+  case WebAssembly::FALLTHROUGH_RETURN_I32: return WebAssembly::FALLTHROUGH_RETURN_I32_S;
+  case WebAssembly::FALLTHROUGH_RETURN_I64: return WebAssembly::FALLTHROUGH_RETURN_I64_S;
+  case WebAssembly::FALLTHROUGH_RETURN_VOID: return WebAssembly::FALLTHROUGH_RETURN_VOID_S;
+  case WebAssembly::FALLTHROUGH_RETURN_v16i8: return WebAssembly::FALLTHROUGH_RETURN_v16i8_S;
+  case WebAssembly::FALLTHROUGH_RETURN_v4f32: return WebAssembly::FALLTHROUGH_RETURN_v4f32_S;
+  case WebAssembly::FALLTHROUGH_RETURN_v4i32: return WebAssembly::FALLTHROUGH_RETURN_v4i32_S;
+  case WebAssembly::FALLTHROUGH_RETURN_v8i16: return WebAssembly::FALLTHROUGH_RETURN_v8i16_S;
+  case WebAssembly::FALLTHROUGH_RETURN_v2f64: return WebAssembly::FALLTHROUGH_RETURN_v2f64_S;
+  case WebAssembly::FALLTHROUGH_RETURN_v2i64: return WebAssembly::FALLTHROUGH_RETURN_v2i64_S;
+  case WebAssembly::FLOOR_F32: return WebAssembly::FLOOR_F32_S;
+  case WebAssembly::FLOOR_F64: return WebAssembly::FLOOR_F64_S;
+  case WebAssembly::FP_TO_SINT_I32_F32: return WebAssembly::FP_TO_SINT_I32_F32_S;
+  case WebAssembly::FP_TO_SINT_I32_F64: return WebAssembly::FP_TO_SINT_I32_F64_S;
+  case WebAssembly::FP_TO_SINT_I64_F32: return WebAssembly::FP_TO_SINT_I64_F32_S;
+  case WebAssembly::FP_TO_SINT_I64_F64: return WebAssembly::FP_TO_SINT_I64_F64_S;
+  case WebAssembly::FP_TO_UINT_I32_F32: return WebAssembly::FP_TO_UINT_I32_F32_S;
+  case WebAssembly::FP_TO_UINT_I32_F64: return WebAssembly::FP_TO_UINT_I32_F64_S;
+  case WebAssembly::FP_TO_UINT_I64_F32: return WebAssembly::FP_TO_UINT_I64_F32_S;
+  case WebAssembly::FP_TO_UINT_I64_F64: return WebAssembly::FP_TO_UINT_I64_F64_S;
+  case WebAssembly::GET_GLOBAL_EXCEPT_REF: return WebAssembly::GET_GLOBAL_EXCEPT_REF_S;
+  case WebAssembly::GET_GLOBAL_F32: return WebAssembly::GET_GLOBAL_F32_S;
+  case WebAssembly::GET_GLOBAL_F64: return WebAssembly::GET_GLOBAL_F64_S;
+  case WebAssembly::GET_GLOBAL_I32: return WebAssembly::GET_GLOBAL_I32_S;
+  case WebAssembly::GET_GLOBAL_I64: return WebAssembly::GET_GLOBAL_I64_S;
+  case WebAssembly::GET_GLOBAL_V128: return WebAssembly::GET_GLOBAL_V128_S;
+  case WebAssembly::GET_LOCAL_EXCEPT_REF: return WebAssembly::GET_LOCAL_EXCEPT_REF_S;
+  case WebAssembly::GET_LOCAL_F32: return WebAssembly::GET_LOCAL_F32_S;
+  case WebAssembly::GET_LOCAL_F64: return WebAssembly::GET_LOCAL_F64_S;
+  case WebAssembly::GET_LOCAL_I32: return WebAssembly::GET_LOCAL_I32_S;
+  case WebAssembly::GET_LOCAL_I64: return WebAssembly::GET_LOCAL_I64_S;
+  case WebAssembly::GET_LOCAL_V128: return WebAssembly::GET_LOCAL_V128_S;
+  case WebAssembly::GE_F32: return WebAssembly::GE_F32_S;
+  case WebAssembly::GE_F64: return WebAssembly::GE_F64_S;
+  case WebAssembly::GE_S_I32: return WebAssembly::GE_S_I32_S;
+  case WebAssembly::GE_S_I64: return WebAssembly::GE_S_I64_S;
+  case WebAssembly::GE_U_I32: return WebAssembly::GE_U_I32_S;
+  case WebAssembly::GE_U_I64: return WebAssembly::GE_U_I64_S;
+  case WebAssembly::GROW_MEMORY_I32: return WebAssembly::GROW_MEMORY_I32_S;
+  case WebAssembly::GT_F32: return WebAssembly::GT_F32_S;
+  case WebAssembly::GT_F64: return WebAssembly::GT_F64_S;
+  case WebAssembly::GT_S_I32: return WebAssembly::GT_S_I32_S;
+  case WebAssembly::GT_S_I64: return WebAssembly::GT_S_I64_S;
+  case WebAssembly::GT_U_I32: return WebAssembly::GT_U_I32_S;
+  case WebAssembly::GT_U_I64: return WebAssembly::GT_U_I64_S;
+  case WebAssembly::I32_EXTEND16_S_I32: return WebAssembly::I32_EXTEND16_S_I32_S;
+  case WebAssembly::I32_EXTEND8_S_I32: return WebAssembly::I32_EXTEND8_S_I32_S;
+  case WebAssembly::I32_REINTERPRET_F32: return WebAssembly::I32_REINTERPRET_F32_S;
+  case WebAssembly::I32_TRUNC_S_F32: return WebAssembly::I32_TRUNC_S_F32_S;
+  case WebAssembly::I32_TRUNC_S_F64: return WebAssembly::I32_TRUNC_S_F64_S;
+  case WebAssembly::I32_TRUNC_S_SAT_F32: return WebAssembly::I32_TRUNC_S_SAT_F32_S;
+  case WebAssembly::I32_TRUNC_S_SAT_F64: return WebAssembly::I32_TRUNC_S_SAT_F64_S;
+  case WebAssembly::I32_TRUNC_U_F32: return WebAssembly::I32_TRUNC_U_F32_S;
+  case WebAssembly::I32_TRUNC_U_F64: return WebAssembly::I32_TRUNC_U_F64_S;
+  case WebAssembly::I32_TRUNC_U_SAT_F32: return WebAssembly::I32_TRUNC_U_SAT_F32_S;
+  case WebAssembly::I32_TRUNC_U_SAT_F64: return WebAssembly::I32_TRUNC_U_SAT_F64_S;
+  case WebAssembly::I32_WRAP_I64: return WebAssembly::I32_WRAP_I64_S;
+  case WebAssembly::I64_EXTEND16_S_I64: return WebAssembly::I64_EXTEND16_S_I64_S;
+  case WebAssembly::I64_EXTEND32_S_I64: return WebAssembly::I64_EXTEND32_S_I64_S;
+  case WebAssembly::I64_EXTEND8_S_I64: return WebAssembly::I64_EXTEND8_S_I64_S;
+  case WebAssembly::I64_EXTEND_S_I32: return WebAssembly::I64_EXTEND_S_I32_S;
+  case WebAssembly::I64_EXTEND_U_I32: return WebAssembly::I64_EXTEND_U_I32_S;
+  case WebAssembly::I64_REINTERPRET_F64: return WebAssembly::I64_REINTERPRET_F64_S;
+  case WebAssembly::I64_TRUNC_S_F32: return WebAssembly::I64_TRUNC_S_F32_S;
+  case WebAssembly::I64_TRUNC_S_F64: return WebAssembly::I64_TRUNC_S_F64_S;
+  case WebAssembly::I64_TRUNC_S_SAT_F32: return WebAssembly::I64_TRUNC_S_SAT_F32_S;
+  case WebAssembly::I64_TRUNC_S_SAT_F64: return WebAssembly::I64_TRUNC_S_SAT_F64_S;
+  case WebAssembly::I64_TRUNC_U_F32: return WebAssembly::I64_TRUNC_U_F32_S;
+  case WebAssembly::I64_TRUNC_U_F64: return WebAssembly::I64_TRUNC_U_F64_S;
+  case WebAssembly::I64_TRUNC_U_SAT_F32: return WebAssembly::I64_TRUNC_U_SAT_F32_S;
+  case WebAssembly::I64_TRUNC_U_SAT_F64: return WebAssembly::I64_TRUNC_U_SAT_F64_S;
+  case WebAssembly::LE_F32: return WebAssembly::LE_F32_S;
+  case WebAssembly::LE_F64: return WebAssembly::LE_F64_S;
+  case WebAssembly::LE_S_I32: return WebAssembly::LE_S_I32_S;
+  case WebAssembly::LE_S_I64: return WebAssembly::LE_S_I64_S;
+  case WebAssembly::LE_U_I32: return WebAssembly::LE_U_I32_S;
+  case WebAssembly::LE_U_I64: return WebAssembly::LE_U_I64_S;
+  case WebAssembly::LOAD16_S_I32: return WebAssembly::LOAD16_S_I32_S;
+  case WebAssembly::LOAD16_S_I64: return WebAssembly::LOAD16_S_I64_S;
+  case WebAssembly::LOAD16_U_I32: return WebAssembly::LOAD16_U_I32_S;
+  case WebAssembly::LOAD16_U_I64: return WebAssembly::LOAD16_U_I64_S;
+  case WebAssembly::LOAD32_S_I64: return WebAssembly::LOAD32_S_I64_S;
+  case WebAssembly::LOAD32_U_I64: return WebAssembly::LOAD32_U_I64_S;
+  case WebAssembly::LOAD8_S_I32: return WebAssembly::LOAD8_S_I32_S;
+  case WebAssembly::LOAD8_S_I64: return WebAssembly::LOAD8_S_I64_S;
+  case WebAssembly::LOAD8_U_I32: return WebAssembly::LOAD8_U_I32_S;
+  case WebAssembly::LOAD8_U_I64: return WebAssembly::LOAD8_U_I64_S;
+  case WebAssembly::LOAD_F32: return WebAssembly::LOAD_F32_S;
+  case WebAssembly::LOAD_F64: return WebAssembly::LOAD_F64_S;
+  case WebAssembly::LOAD_I32: return WebAssembly::LOAD_I32_S;
+  case WebAssembly::LOAD_I64: return WebAssembly::LOAD_I64_S;
+  case WebAssembly::LOOP: return WebAssembly::LOOP_S;
+  case WebAssembly::LT_F32: return WebAssembly::LT_F32_S;
+  case WebAssembly::LT_F64: return WebAssembly::LT_F64_S;
+  case WebAssembly::LT_S_I32: return WebAssembly::LT_S_I32_S;
+  case WebAssembly::LT_S_I64: return WebAssembly::LT_S_I64_S;
+  case WebAssembly::LT_U_I32: return WebAssembly::LT_U_I32_S;
+  case WebAssembly::LT_U_I64: return WebAssembly::LT_U_I64_S;
+  case WebAssembly::MAX_F32: return WebAssembly::MAX_F32_S;
+  case WebAssembly::MAX_F64: return WebAssembly::MAX_F64_S;
+  case WebAssembly::MEMORY_GROW_I32: return WebAssembly::MEMORY_GROW_I32_S;
+  case WebAssembly::MEMORY_SIZE_I32: return WebAssembly::MEMORY_SIZE_I32_S;
+  case WebAssembly::MEM_GROW_I32: return WebAssembly::MEM_GROW_I32_S;
+  case WebAssembly::MEM_SIZE_I32: return WebAssembly::MEM_SIZE_I32_S;
+  case WebAssembly::MIN_F32: return WebAssembly::MIN_F32_S;
+  case WebAssembly::MIN_F64: return WebAssembly::MIN_F64_S;
+  case WebAssembly::MUL_F32: return WebAssembly::MUL_F32_S;
+  case WebAssembly::MUL_F64: return WebAssembly::MUL_F64_S;
+  case WebAssembly::MUL_I32: return WebAssembly::MUL_I32_S;
+  case WebAssembly::MUL_I64: return WebAssembly::MUL_I64_S;
+  case WebAssembly::MUL_v16i8: return WebAssembly::MUL_v16i8_S;
+  case WebAssembly::MUL_v2f64: return WebAssembly::MUL_v2f64_S;
+  case WebAssembly::MUL_v4f32: return WebAssembly::MUL_v4f32_S;
+  case WebAssembly::MUL_v4i32: return WebAssembly::MUL_v4i32_S;
+  case WebAssembly::MUL_v8i16: return WebAssembly::MUL_v8i16_S;
+  case WebAssembly::NEAREST_F32: return WebAssembly::NEAREST_F32_S;
+  case WebAssembly::NEAREST_F64: return WebAssembly::NEAREST_F64_S;
+  case WebAssembly::NEG_F32: return WebAssembly::NEG_F32_S;
+  case WebAssembly::NEG_F64: return WebAssembly::NEG_F64_S;
+  case WebAssembly::NE_F32: return WebAssembly::NE_F32_S;
+  case WebAssembly::NE_F64: return WebAssembly::NE_F64_S;
+  case WebAssembly::NE_I32: return WebAssembly::NE_I32_S;
+  case WebAssembly::NE_I64: return WebAssembly::NE_I64_S;
+  case WebAssembly::NOP: return WebAssembly::NOP_S;
+  case WebAssembly::OR_I32: return WebAssembly::OR_I32_S;
+  case WebAssembly::OR_I64: return WebAssembly::OR_I64_S;
+  case WebAssembly::PCALL_INDIRECT_EXCEPT_REF: return WebAssembly::PCALL_INDIRECT_EXCEPT_REF_S;
+  case WebAssembly::PCALL_INDIRECT_F32: return WebAssembly::PCALL_INDIRECT_F32_S;
+  case WebAssembly::PCALL_INDIRECT_F64: return WebAssembly::PCALL_INDIRECT_F64_S;
+  case WebAssembly::PCALL_INDIRECT_I32: return WebAssembly::PCALL_INDIRECT_I32_S;
+  case WebAssembly::PCALL_INDIRECT_I64: return WebAssembly::PCALL_INDIRECT_I64_S;
+  case WebAssembly::PCALL_INDIRECT_VOID: return WebAssembly::PCALL_INDIRECT_VOID_S;
+  case WebAssembly::PCALL_INDIRECT_v16i8: return WebAssembly::PCALL_INDIRECT_v16i8_S;
+  case WebAssembly::PCALL_INDIRECT_v4f32: return WebAssembly::PCALL_INDIRECT_v4f32_S;
+  case WebAssembly::PCALL_INDIRECT_v4i32: return WebAssembly::PCALL_INDIRECT_v4i32_S;
+  case WebAssembly::PCALL_INDIRECT_v8i16: return WebAssembly::PCALL_INDIRECT_v8i16_S;
+  case WebAssembly::POPCNT_I32: return WebAssembly::POPCNT_I32_S;
+  case WebAssembly::POPCNT_I64: return WebAssembly::POPCNT_I64_S;
+  case WebAssembly::REM_S_I32: return WebAssembly::REM_S_I32_S;
+  case WebAssembly::REM_S_I64: return WebAssembly::REM_S_I64_S;
+  case WebAssembly::REM_U_I32: return WebAssembly::REM_U_I32_S;
+  case WebAssembly::REM_U_I64: return WebAssembly::REM_U_I64_S;
+  case WebAssembly::RETHROW: return WebAssembly::RETHROW_S;
+  case WebAssembly::RETHROW_TO_CALLER: return WebAssembly::RETHROW_TO_CALLER_S;
+  case WebAssembly::RETURN_EXCEPT_REF: return WebAssembly::RETURN_EXCEPT_REF_S;
+  case WebAssembly::RETURN_F32: return WebAssembly::RETURN_F32_S;
+  case WebAssembly::RETURN_F64: return WebAssembly::RETURN_F64_S;
+  case WebAssembly::RETURN_I32: return WebAssembly::RETURN_I32_S;
+  case WebAssembly::RETURN_I64: return WebAssembly::RETURN_I64_S;
+  case WebAssembly::RETURN_VOID: return WebAssembly::RETURN_VOID_S;
+  case WebAssembly::RETURN_v16i8: return WebAssembly::RETURN_v16i8_S;
+  case WebAssembly::RETURN_v4f32: return WebAssembly::RETURN_v4f32_S;
+  case WebAssembly::RETURN_v4i32: return WebAssembly::RETURN_v4i32_S;
+  case WebAssembly::RETURN_v8i16: return WebAssembly::RETURN_v8i16_S;
+  case WebAssembly::ROTL_I32: return WebAssembly::ROTL_I32_S;
+  case WebAssembly::ROTL_I64: return WebAssembly::ROTL_I64_S;
+  case WebAssembly::ROTR_I32: return WebAssembly::ROTR_I32_S;
+  case WebAssembly::ROTR_I64: return WebAssembly::ROTR_I64_S;
+  case WebAssembly::SELECT_EXCEPT_REF: return WebAssembly::SELECT_EXCEPT_REF_S;
+  case WebAssembly::SELECT_F32: return WebAssembly::SELECT_F32_S;
+  case WebAssembly::SELECT_F64: return WebAssembly::SELECT_F64_S;
+  case WebAssembly::SELECT_I32: return WebAssembly::SELECT_I32_S;
+  case WebAssembly::SELECT_I64: return WebAssembly::SELECT_I64_S;
+  case WebAssembly::SET_GLOBAL_EXCEPT_REF: return WebAssembly::SET_GLOBAL_EXCEPT_REF_S;
+  case WebAssembly::SET_GLOBAL_F32: return WebAssembly::SET_GLOBAL_F32_S;
+  case WebAssembly::SET_GLOBAL_F64: return WebAssembly::SET_GLOBAL_F64_S;
+  case WebAssembly::SET_GLOBAL_I32: return WebAssembly::SET_GLOBAL_I32_S;
+  case WebAssembly::SET_GLOBAL_I64: return WebAssembly::SET_GLOBAL_I64_S;
+  case WebAssembly::SET_GLOBAL_V128: return WebAssembly::SET_GLOBAL_V128_S;
+  case WebAssembly::SET_LOCAL_EXCEPT_REF: return WebAssembly::SET_LOCAL_EXCEPT_REF_S;
+  case WebAssembly::SET_LOCAL_F32: return WebAssembly::SET_LOCAL_F32_S;
+  case WebAssembly::SET_LOCAL_F64: return WebAssembly::SET_LOCAL_F64_S;
+  case WebAssembly::SET_LOCAL_I32: return WebAssembly::SET_LOCAL_I32_S;
+  case WebAssembly::SET_LOCAL_I64: return WebAssembly::SET_LOCAL_I64_S;
+  case WebAssembly::SET_LOCAL_V128: return WebAssembly::SET_LOCAL_V128_S;
+  case WebAssembly::SHL_I32: return WebAssembly::SHL_I32_S;
+  case WebAssembly::SHL_I64: return WebAssembly::SHL_I64_S;
+  case WebAssembly::SHR_S_I32: return WebAssembly::SHR_S_I32_S;
+  case WebAssembly::SHR_S_I64: return WebAssembly::SHR_S_I64_S;
+  case WebAssembly::SHR_U_I32: return WebAssembly::SHR_U_I32_S;
+  case WebAssembly::SHR_U_I64: return WebAssembly::SHR_U_I64_S;
+  case WebAssembly::SQRT_F32: return WebAssembly::SQRT_F32_S;
+  case WebAssembly::SQRT_F64: return WebAssembly::SQRT_F64_S;
+  case WebAssembly::STORE16_I32: return WebAssembly::STORE16_I32_S;
+  case WebAssembly::STORE16_I64: return WebAssembly::STORE16_I64_S;
+  case WebAssembly::STORE32_I64: return WebAssembly::STORE32_I64_S;
+  case WebAssembly::STORE8_I32: return WebAssembly::STORE8_I32_S;
+  case WebAssembly::STORE8_I64: return WebAssembly::STORE8_I64_S;
+  case WebAssembly::STORE_F32: return WebAssembly::STORE_F32_S;
+  case WebAssembly::STORE_F64: return WebAssembly::STORE_F64_S;
+  case WebAssembly::STORE_I32: return WebAssembly::STORE_I32_S;
+  case WebAssembly::STORE_I64: return WebAssembly::STORE_I64_S;
+  case WebAssembly::SUB_F32: return WebAssembly::SUB_F32_S;
+  case WebAssembly::SUB_F64: return WebAssembly::SUB_F64_S;
+  case WebAssembly::SUB_I32: return WebAssembly::SUB_I32_S;
+  case WebAssembly::SUB_I64: return WebAssembly::SUB_I64_S;
+  case WebAssembly::SUB_v16i8: return WebAssembly::SUB_v16i8_S;
+  case WebAssembly::SUB_v2f64: return WebAssembly::SUB_v2f64_S;
+  case WebAssembly::SUB_v2i64: return WebAssembly::SUB_v2i64_S;
+  case WebAssembly::SUB_v4f32: return WebAssembly::SUB_v4f32_S;
+  case WebAssembly::SUB_v4i32: return WebAssembly::SUB_v4i32_S;
+  case WebAssembly::SUB_v8i16: return WebAssembly::SUB_v8i16_S;
+  case WebAssembly::TEE_EXCEPT_REF: return WebAssembly::TEE_EXCEPT_REF_S;
+  case WebAssembly::TEE_F32: return WebAssembly::TEE_F32_S;
+  case WebAssembly::TEE_F64: return WebAssembly::TEE_F64_S;
+  case WebAssembly::TEE_I32: return WebAssembly::TEE_I32_S;
+  case WebAssembly::TEE_I64: return WebAssembly::TEE_I64_S;
+  case WebAssembly::TEE_LOCAL_EXCEPT_REF: return WebAssembly::TEE_LOCAL_EXCEPT_REF_S;
+  case WebAssembly::TEE_LOCAL_F32: return WebAssembly::TEE_LOCAL_F32_S;
+  case WebAssembly::TEE_LOCAL_F64: return WebAssembly::TEE_LOCAL_F64_S;
+  case WebAssembly::TEE_LOCAL_I32: return WebAssembly::TEE_LOCAL_I32_S;
+  case WebAssembly::TEE_LOCAL_I64: return WebAssembly::TEE_LOCAL_I64_S;
+  case WebAssembly::TEE_LOCAL_V128: return WebAssembly::TEE_LOCAL_V128_S;
+  case WebAssembly::TEE_V128: return WebAssembly::TEE_V128_S;
+  case WebAssembly::THROW_I32: return WebAssembly::THROW_I32_S;
+  case WebAssembly::THROW_I64: return WebAssembly::THROW_I64_S;
+  case WebAssembly::TRUNC_F32: return WebAssembly::TRUNC_F32_S;
+  case WebAssembly::TRUNC_F64: return WebAssembly::TRUNC_F64_S;
+  case WebAssembly::TRY: return WebAssembly::TRY_S;
+  case WebAssembly::UNREACHABLE: return WebAssembly::UNREACHABLE_S;
+  case WebAssembly::XOR_I32: return WebAssembly::XOR_I32_S;
+  case WebAssembly::XOR_I64: return WebAssembly::XOR_I64_S;
+  }
 }