15-bit tt-fast cache has excessive miss rate on 176.gcc; this change

more or less halves the miss rate.

git-svn-id: svn://svn.valgrind.org/vex/trunk@552

diff --git a/VEX/head20041019/coregrind/core_asm.h b/VEX/head20041019/coregrind/core_asm.h
index 5d43ffd289ec2cfed5061c7d462655f731595388..dc8ae40c5e20cb4d68bdb98885a75355b3aaeb39 100644 (file)
--- a/VEX/head20041019/coregrind/core_asm.h
+++ b/VEX/head20041019/coregrind/core_asm.h
@@ -78,7 +78,7 @@
 
 
 /* Constants for the fast translation lookup cache. */
-#define VG_TT_FAST_BITS 15
+#define VG_TT_FAST_BITS 16
 #define VG_TT_FAST_SIZE (1 << VG_TT_FAST_BITS)
 #define VG_TT_FAST_MASK ((VG_TT_FAST_SIZE) - 1)