[hackers] [scc] [cc1] Move labels to a different hash table || Roberto E. Vargas Caballero

[git]

commit e337843c58d1d5b0e91134c6d3173c97708cb291
Author:     Roberto E. Vargas Caballero <k...@shike2.com>
AuthorDate: Mon Feb 20 08:43:54 2017 +0100
Commit:     Roberto E. Vargas Caballero <k...@shike2.com>
CommitDate: Mon Feb 20 12:19:29 2017 +0100

    [cc1] Move labels to a different hash table

diff --git a/cc1/symbol.c b/cc1/symbol.c
index 1126279..3c5f9b1 100644
--- a/cc1/symbol.c
+++ b/cc1/symbol.c
@@ -11,13 +11,16 @@ static char sccsid[] = "@(#) ./cc1/symbol.c";
 #include "cc1.h"
 
 #define NR_SYM_HASH 64
+#define NR_CPP_HASH 32
+#define NR_LBL_HASH 16
 
 unsigned curctx;
 static unsigned short counterid;
 
 static Symbol *head, *labels;
 static Symbol *htab[NR_SYM_HASH];
-static Symbol *htabcpp[NR_SYM_HASH];
+static Symbol *htabcpp[NR_CPP_HASH];
+static Symbol *htablbl[NR_LBL_HASH];
 
 #ifndef NDEBUG
 void
@@ -54,15 +57,27 @@ dumpstab(Symbol **tbl, char *msg)
 static Symbol **
 hash(char *s, int ns)
 {
-       unsigned c, h;
+       unsigned c, h, size;
        Symbol **tab;
 
        for (h = 0; c = *s; ++s)
                h = h*33 ^ c;
-       h &= NR_SYM_HASH-1;
 
-       tab = (ns == NS_CPP) ? htabcpp : htab;
-       return &tab[h];
+       switch (ns) {
+       case NS_CPP:
+               tab = htabcpp;
+               size = NR_CPP_HASH-1;
+               break;
+       case NS_LABEL:
+               tab = htablbl;
+               size = NR_LBL_HASH-1;
+               break;
+       default:
+               tab = htab;
+               size = NR_SYM_HASH-1;
+               break;
+       }
+       return &tab[h & size];
 }
 
 static void