scc

Simple C99 Compiler
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commit b163099eeca09217177482d7502bf8d6703dad76
parent 2f1edab1b0ee2af6635bf41644eda6a25c4471c3
Author: Roberto E. Vargas Caballero <k0ga@shike2.com>
Date:   Mon, 18 Jan 2016 17:39:03 +0100

Mark as constant nodes address of static variables

This operation generates a constant node which can be used
in initializers.

Diffstat:
cc1/expr.c | 8+++++++-
1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/cc1/expr.c b/cc1/expr.c @@ -544,6 +544,8 @@ incdec(Node *np, char op) static Node * address(char op, Node *np) { + Node *new; + if (BTYPE(np) != FTN) { chklvalue(np); if (np->symbol && (np->sym->flags & ISREGISTER)) @@ -554,7 +556,11 @@ address(char op, Node *np) return new; } } - return node(op, mktype(np->type, PTR, 0, NULL), np, NULL); + new = node(op, mktype(np->type, PTR, 0, NULL), np, NULL); + + if (np->symbol && np->sym->flags & (ISGLOBAL|ISLOCAL|ISPRIVATE)) + new->constant = 1; + return new; } static Node *