[Strings] string.is_usv_sequence (#4783)

This implements it as a StringMeasure opcode. They do have the same number of
operands, same trapping behavior, and same return type. They both get a string and
do some inspection of it to return an i32. Perhaps the name could be StringInspect
or something like that, rather than StringMeasure..? But I think for now this might be
good enough, and the spec may change anyhow later.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/wasm-binary.h b/src/wasm-binary.h
index f89391186..97f6bc24e 100644
--- a/src/wasm-binary.h
+++ b/src/wasm-binary.h
@@ -1146,6 +1146,7 @@ enum ASTNodes {
   StringEncodeWTF16 = 0x87,
   StringConcat = 0x88,
   StringEq = 0x89,
+  StringIsUSV = 0x8a,
 };
 
 enum MemoryAccess {