[WebAssembly] Fix typos in mem.grow/memory.grow opcodes

This should be not 0x3f but 0x40.

llvm-svn: 340373
diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyInstrMemory.td b/llvm/lib/Target/WebAssembly/WebAssemblyInstrMemory.td
index 8a49325..fd57464 100644
--- a/llvm/lib/Target/WebAssembly/WebAssemblyInstrMemory.td
+++ b/llvm/lib/Target/WebAssembly/WebAssemblyInstrMemory.td
@@ -475,14 +475,14 @@
                            (int_wasm_memory_grow (i32 imm:$flags),
                              I32:$delta))],
                          "memory.grow\t$dst, $flags, $delta",
-                         "memory.grow\t$flags, $delta", 0x3f>,
+                         "memory.grow\t$flags, $delta", 0x40>,
                        Requires<[HasAddr32]>;
 defm MEM_GROW_I32 : I<(outs I32:$dst), (ins i32imm:$flags, I32:$delta),
                       (outs), (ins i32imm:$flags),
                       [(set I32:$dst,
                             (int_wasm_mem_grow (i32 imm:$flags), I32:$delta))],
                       "mem.grow\t$dst, $flags, $delta", "mem.grow\t$flags",
-                      0x3f>,
+                      0x40>,
                     Requires<[HasAddr32]>;
 defm GROW_MEMORY_I32 : I<(outs I32:$dst), (ins i32imm:$flags, I32:$delta),
                          (outs), (ins i32imm:$flags),