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codegen.c: ADDI/SUBI should not be prefixed by OP_EXT; fix #5590

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As a general principles numeric instructions should not be prefixed by
`OP_EXT` instructions since they are not supported by "mruby/c".
This commit is contained in:
Yukihiro "Matz" Matsumoto
2021-12-01 14:33:52 +09:00
parent 76659a66ae
commit bd88870afb
1 changed files with 2 additions and 2 deletions
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mrbgems/mruby-compiler/core/codegen.c
+2 -2
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@@ -778,8 +778,8 @@ gen_addsub(codegen_scope *s, uint8_t op, uint16_t dst)
struct mrb_insn_data data0 = mrb_decode_insn(mrb_prev_pc(s, data.addr));
mrb_int n0;
if (addr_pc(s, data.addr) == s->lastlabel || !get_int_operand(s, &data0, &n0)) {
/* OP_ADDI/OP_SUBI takes upto 16bits */
if (n > INT16_MAX || n < INT16_MIN) goto normal;
/* OP_ADDI/OP_SUBI takes upto 8bits */
if (n > INT8_MAX || n < INT8_MIN) goto normal;
rewind_pc(s);
if (n == 0) return;
if (n > 0) {