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

src/wasm/wasm-macro-gen.h

Index: src/wasm/wasm-macro-gen.h
diff --git a/src/wasm/wasm-macro-gen.h b/src/wasm/wasm-macro-gen.h
index 31949126bcc25157ce0ef2bc5f8cd4b09b27cded..ce2f843e71bb2225fa4c136b72fccb8da9dfdc90 100644
--- a/src/wasm/wasm-macro-gen.h
+++ b/src/wasm/wasm-macro-gen.h
@@ -495,6 +495,14 @@ class LocalDeclEncoder {
 #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