scc

commit 6597076865083f7a859d3ba865a0dd7bec6be664
parent 1fd12818af2bd093d2f411f755a1e4ff16eea160
Author: Roberto E. Vargas Caballero <k0ga@shike2.com>
Date:   Mon,  1 Nov 2021 09:20:00 +0100

cc1: Add an additional parameter to prtree()

This parameter helps to add more sensible information
in the debug output.

Diffstat:
M
src/cmd/cc/cc1/cc1.h
 | 
2
+-
M
src/cmd/cc/cc1/code.c
 | 
4
++--
M
src/cmd/cc/cc1/fold.c
 | 
3
++-

3 files changed, 5 insertions(+), 4 deletions(-)
diff --git a/src/cmd/cc/cc1/cc1.h b/src/cmd/cc/cc1/cc1.h
@@ -458,7 +458,7 @@ extern void setloc(char *fname, unsigned line);
 #define accept(t) ((yytoken == (t)) ? next() : 0)
 
 /* code.c */
-extern void prtree(Node *np);
+extern void prtree(char *s, Node *np);
 extern void emit(int, void *);
 extern Node *node(int op, Type *tp, Node *left, Node *rigth);
 extern Node *varnode(Symbol *sym);
diff --git a/src/cmd/cc/cc1/code.c b/src/cmd/cc/cc1/code.c
@@ -165,10 +165,10 @@ emitnode(Node *np)
 }
 
 void
-prtree(Node *np)
+prtree(char *s, Node *np)
 {
 	outfp = stderr;
-	fputs("DBG prtree", outfp);
+	fprintf(outfp, "DBG prtree %s", s);
 	emitnode(np);
 	putc('\n', outfp);
 	outfp = stdout;
diff --git a/src/cmd/cc/cc1/fold.c b/src/cmd/cc/cc1/fold.c
@@ -637,8 +637,9 @@ simplify(Node *np)
 
 	if (!np)
 		return NULL;
+
 	if (enadebug)
-		prtree(np);
+		prtree("simplify", np);
 
 	l = np->left = simplify(np->left);
 	r = np->right = simplify(np->right);