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Allow for [base - disp]

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This commit is contained in:
gingerBill
2026-08-18 14:11:01 +01:00
parent 6e17e7a2de
commit 12c89ee2bf
4 changed files with 63 additions and 6 deletions
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23
src/check_asm.cpp
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@@ -1107,6 +1107,29 @@ gb_internal void check_asm_instruction_operand(AsmCtx *asm_ctx, CheckerContext *
check_asm_instruction_operand(asm_ctx, ctx, entity, &scale, mem_op->scale, false);
check_asm_instruction_operand(asm_ctx, ctx, entity, &disp, mem_op->disp, false);
// NOTE(bill): if the index is actually an immediate and there is no scale nor disp,
// then treat it as a disp, and modify the AST too
if (index.expr != nullptr && scale.expr == nullptr && disp.expr == nullptr) {
bool do_swap = index.mode == Addressing_Constant;
if (!do_swap) {
Entity *param_entity = entity_of_node(index.expr);
if (param_entity != nullptr && param_entity->kind == Entity_Variable) {
auto kind = check_asm_find_kind(param_entity, ate->decls);
do_swap = kind == AsmTemplateEntityDecl_Immediate;
}
}
if (do_swap) {
disp = index;
index = {};
mem_op->disp = mem_op->index;
mem_op->index = nullptr;
mem_op->disp_op = mem_op->index_op;
mem_op->index_op = {};
}
}
i32 base_w = 0;
i32 index_w = 0;
bool have_base = false;