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| author | Junio C Hamano <gitster@pobox.com> | 2012-05-02 13:54:58 -0700 |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2012-05-02 13:54:58 -0700 |
| commit | 4d1f0ef2104dd0705cdde56979601bdd66f2c16f (patch) | |
| tree | 6fb082dbe68274523dcb01ed035fe69d1f3ab574 /Makefile | |
| parent | e834fa0d5cb73900031cae94159534a15c114e50 (diff) | |
| parent | 6f1af028ce0654ef6233dff06701a989d5703bc4 (diff) | |
| download | git-4d1f0ef2104dd0705cdde56979601bdd66f2c16f.tar.gz | |
Merge branch 'tr/xdiff-fast-hash'
Use word-at-a-time comparison to find end of line or NUL (end of buffer),
borrowed from the linux-kernel discussion.
By Thomas Rast
* tr/xdiff-fast-hash:
xdiff: choose XDL_FAST_HASH code on sizeof(long) instead of __WORDSIZE
xdiff: load full words in the inner loop of xdl_hash_record
Diffstat (limited to 'Makefile')
| -rw-r--r-- | Makefile | 12 |
1 files changed, 12 insertions, 0 deletions
@@ -288,6 +288,11 @@ all:: # dependency rules. # # Define NATIVE_CRLF if your platform uses CRLF for line endings. +# +# Define XDL_FAST_HASH to use an alternative line-hashing method in +# the diff algorithm. It gives a nice speedup if your processor has +# fast unaligned word loads. Does NOT work on big-endian systems! +# Enabled by default on x86_64. GIT-VERSION-FILE: FORCE @$(SHELL_PATH) ./GIT-VERSION-GEN @@ -902,6 +907,9 @@ EXTLIBS = # because maintaining the nesting to match is a pain. If # we had "elif" things would have been much nicer... +ifeq ($(uname_M),x86_64) + XDL_FAST_HASH = YesPlease +endif ifeq ($(uname_S),OSF1) # Need this for u_short definitions et al BASIC_CFLAGS += -D_OSF_SOURCE @@ -1775,6 +1783,10 @@ ifndef NO_MSGFMT_EXTENDED_OPTIONS MSGFMT += --check --statistics endif +ifneq (,$(XDL_FAST_HASH)) + BASIC_CFLAGS += -DXDL_FAST_HASH +endif + ifeq ($(TCLTK_PATH),) NO_TCLTK=NoThanks endif |