[Strings] Adopt new instruction binary encoding (#5714)

See WebAssembly/stringref#46.

This format is already adopted by V8: https://chromium-review.googlesource.com/c/v8/v8/+/3892695.
The text format is left unchanged (see #5607 for a discussion on the subject).

I have also added support for string.encode_lossy_utf8 and
string.encode_lossy_utf8 array (by allowing the replace policy for
Binaryen's string.encode_wtf8 instruction).

1 files changed, 4 insertions, 2 deletions

diff --git a/src/ir/effects.h b/src/ir/effects.h
index 893ff2cae..b4987b12b 100644
--- a/src/ir/effects.h
+++ b/src/ir/effects.h
@@ -841,13 +841,13 @@ private:
       switch (curr->op) {
         case StringNewUTF8:
         case StringNewWTF8:
-        case StringNewReplace:
+        case StringNewLossyUTF8:
         case StringNewWTF16:
           parent.readsMemory = true;
           break;
         case StringNewUTF8Array:
         case StringNewWTF8Array:
-        case StringNewReplaceArray:
+        case StringNewLossyUTF8Array:
         case StringNewWTF16Array:
           parent.readsArray = true;
           break;
@@ -865,11 +865,13 @@ private:
       parent.implicitTrap = true;
       switch (curr->op) {
         case StringEncodeUTF8:
+        case StringEncodeLossyUTF8:
         case StringEncodeWTF8:
         case StringEncodeWTF16:
           parent.writesMemory = true;
           break;
         case StringEncodeUTF8Array:
+        case StringEncodeLossyUTF8Array:
         case StringEncodeWTF8Array:
         case StringEncodeWTF16Array:
           parent.writesArray = true;