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-rw-r--r--js/src/vm/Opcodes.h12
1 files changed, 11 insertions, 1 deletions
diff --git a/js/src/vm/Opcodes.h b/js/src/vm/Opcodes.h
index e13cd6221..b26336815 100644
--- a/js/src/vm/Opcodes.h
+++ b/js/src/vm/Opcodes.h
@@ -1281,7 +1281,17 @@
* Stack: receiver, obj, propval => obj[propval]
*/ \
macro(JSOP_GETELEM_SUPER, 125, "getelem-super", NULL, 1, 3, 1, JOF_BYTE |JOF_ELEM|JOF_LEFTASSOC) \
- macro(JSOP_UNUSED126, 126, "unused126", NULL, 5, 0, 1, JOF_UINT32) \
+ /*
+ * Pushes newly created array for a spread call onto the stack. This has
+ * the same semantics as JSOP_NEWARRAY, but is distinguished to avoid
+ * using unboxed arrays in spread calls, which would make compiling spread
+ * calls in baseline more complex.
+ * Category: Literals
+ * Type: Array
+ * Operands: uint32_t length
+ * Stack: => obj
+ */ \
+ macro(JSOP_SPREADCALLARRAY, 126, "spreadcallarray", NULL, 5, 0, 1, JOF_UINT32) \
\
/*
* Defines the given function on the current scope.