scc

commit 4dc5b92907d3a61fe637e01358d1a18e0a2ce403
parent 57ff62dc0c5dae01e8065a47bcd6d92e7d30f5ae
Author: Roberto E. Vargas Caballero <k0ga@shike2.com>
Date:   Fri,  4 Nov 2022 03:24:39 +0100

cc2/qbe: Use explicit names for asm labels

The generic code uses 0 for asm instruction that only set
labels but we can highlight it in the arch code using an
enum with a name related to lables to make clear why 0
happens in the prog listing.

Diffstat:
M
src/cmd/cc/cc2/target/qbe/arch.h
 | 
2
+-
M
src/cmd/cc/cc2/target/qbe/code.c
 | 
2
+-

2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/src/cmd/cc/cc2/target/qbe/arch.h b/src/cmd/cc/cc2/target/qbe/arch.h
@@ -1,5 +1,5 @@
 enum asmop {
-	ASNOP = 0,
+	ASLABEL = 0,
 	ASSTB,
 	ASSTH,
 	ASSTW,
diff --git a/src/cmd/cc/cc2/target/qbe/code.c b/src/cmd/cc/cc2/target/qbe/code.c
@@ -402,7 +402,7 @@ writeout(void)
 			haslabel = 1;
 			printf("%s\n", symname(pc->label));
 		}
-		if (!pc->op)
+		if (pc->op == ASLABEL)
 			continue;
 		if (pc->flags&BBENTRY && !haslabel)
 			printf("%s\n", symname(newlabel()));