scc

commit c32f54c6312385220fa2e721370647cf0b67607d
parent 271801416fc68607c87517c335a93f28319b41b8
Author: Roberto E. Vargas Caballero <k0ga@shike2.com>
Date:   Fri,  5 Nov 2021 21:43:14 +0100

cc2: Add array flag

When an array is loaded we have to do nothing, because an array
is loaded using only its address (like it was already donde for
aggregates).

Diffstat:
M
src/cmd/cc/cc2/cc2.h
 | 
1
+
M
src/cmd/cc/cc2/parser.c
 | 
1
+
M
src/cmd/cc/cc2/target/qbe/cgen.c
 | 
2
+-

3 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/src/cmd/cc/cc2/cc2.h b/src/cmd/cc/cc2/cc2.h
@@ -12,6 +12,7 @@ enum tflags {
 	PARF    =     1 << 6,  /* parameter */
 	INITF   =     1 << 7,  /* initializer flag */
 	ELLIPS  =     1 << 8,  /* vararg function */
+	ARRF    =     1 << 9,  /* array flag */
 };
 
 enum sclass {
diff --git a/src/cmd/cc/cc2/parser.c b/src/cmd/cc/cc2/parser.c
@@ -571,6 +571,7 @@ array(void)
 	size = pop();
 	base = pop();
 	tp = pop();
+	tp->flags = ARRF;
 	tp->size = size->u.i * base->size; /* FIXME check for overflow */
 	tp->align = base->align;
 
diff --git a/src/cmd/cc/cc2/target/qbe/cgen.c b/src/cmd/cc/cc2/target/qbe/cgen.c
@@ -102,7 +102,7 @@ load(Type *tp, Node *np)
 	Node *new;
 	int flags = tp->flags;
 
-	if (flags & (AGGRF|FUNF))
+	if (flags & (AGGRF|FUNF|ARRF))
 		return np;
 
 	switch (tp->size) {