[asmjs] Do constant folding for I32Asmjs(Div|Rem)S to avoid checks of constant divisors

src/wasm/wasm-macro-gen.h

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_WASM_MACRO_GEN_H_
 #define V8_WASM_MACRO_GEN_H_
 
 #include "src/wasm/wasm-opcodes.h"
 
 #include "src/zone/zone-containers.h"
@@ skipping 477 matching lines @@
 #define WASM_I32_GTS(x, y) x, y, kExprI32GtS
 #define WASM_I32_GES(x, y) x, y, kExprI32GeS
 #define WASM_I32_GTU(x, y) x, y, kExprI32GtU
 #define WASM_I32_GEU(x, y) x, y, kExprI32GeU
 #define WASM_I32_CLZ(x) x, kExprI32Clz
 #define WASM_I32_CTZ(x) x, kExprI32Ctz
 #define WASM_I32_POPCNT(x) x, kExprI32Popcnt
 #define WASM_I32_EQZ(x) x, kExprI32Eqz
 
 //------------------------------------------------------------------------------
+// Asmjs Int32 operations
+//------------------------------------------------------------------------------
+#define WASM_I32_ASMJS_DIVS(x, y) x, y, kExprI32AsmjsDivS
+#define WASM_I32_ASMJS_REMS(x, y) x, y, kExprI32AsmjsRemS
+#define WASM_I32_ASMJS_DIVU(x, y) x, y, kExprI32AsmjsDivU
+#define WASM_I32_ASMJS_REMU(x, y) x, y, kExprI32AsmjsRemU
+
+//------------------------------------------------------------------------------
 // Int64 operations
 //------------------------------------------------------------------------------
 #define WASM_I64_ADD(x, y) x, y, kExprI64Add
 #define WASM_I64_SUB(x, y) x, y, kExprI64Sub
 #define WASM_I64_MUL(x, y) x, y, kExprI64Mul
 #define WASM_I64_DIVS(x, y) x, y, kExprI64DivS
 #define WASM_I64_DIVU(x, y) x, y, kExprI64DivU
 #define WASM_I64_REMS(x, y) x, y, kExprI64RemS
 #define WASM_I64_REMU(x, y) x, y, kExprI64RemU
 #define WASM_I64_AND(x, y) x, y, kExprI64And
@@ skipping 136 matching lines @@
 #define WASM_BRV(depth, val) val, kExprBr, static_cast<byte>(depth)
 #define WASM_BRV_IF(depth, val, cond) \
   val, cond, kExprBrIf, static_cast<byte>(depth)
 #define WASM_BRV_IFD(depth, val, cond) \
   val, cond, kExprBrIf, static_cast<byte>(depth), kExprDrop
 #define WASM_IFB(cond, ...) cond, kExprIf, kLocalVoid, __VA_ARGS__, kExprEnd
 #define WASM_BR_TABLEV(val, key, count, ...) \
   val, key, kExprBrTable, U32V_1(count), __VA_ARGS__
 
 #endif  // V8_WASM_MACRO_GEN_H_