From 28c604c82bd76ec6bcbb0960ecadd706a6c20614 Mon Sep 17 00:00:00 2001 From: nsfisis Date: Sun, 4 May 2025 21:12:12 +0900 Subject: logical not expr --- main.c | 18 +++++++++++++++++- 1 file changed, 17 insertions(+), 1 deletion(-) (limited to 'main.c') diff --git a/main.c b/main.c index 5c240ac..7b3ae57 100644 --- a/main.c +++ b/main.c @@ -883,6 +883,12 @@ struct AstNode* parse_prefix_expr(struct Parser* p) { struct AstNode* e = ast_new_binary_expr(op, lhs, operand); e->ty = type_new(TY_INT); return e; + } else if (op == TK_NOT) { + next_token(p); + struct AstNode* operand = parse_prefix_expr(p); + struct AstNode* e = ast_new_unary_expr(op, operand); + e->ty = type_new(TY_INT); + return e; } else if (op == TK_AND) { next_token(p); struct AstNode* operand = parse_prefix_expr(p); @@ -1439,7 +1445,17 @@ void gen_unary_expr(struct CodeGen* g, struct AstNode* ast) { assert_ast_kind(ast, AST_UNARY_EXPR); printf(" # gen_unary_expr\n"); - todo(); + gen_expr(g, ast->expr1, GEN_RVAL); + if (ast->op == TK_NOT) { + printf(" pop rax\n"); + printf(" mov rdi, 0\n"); + printf(" cmp rax, rdi\n"); + printf(" sete al\n"); + printf(" movzb rax, al\n"); + printf(" push rax\n"); + } else { + todo(); + } } void gen_ref_expr(struct CodeGen* g, struct AstNode* ast, int gen_mode) { -- cgit v1.2.3-70-g09d2