]> git.proxmox.com Git - mirror_edk2.git/commit
BaseTools/tools_def.template: remove comment about GCC44 + LzmaF86Compress
authorLaszlo Ersek <lersek@redhat.com>
Thu, 3 Jan 2019 00:58:22 +0000 (01:58 +0100)
committerLaszlo Ersek <lersek@redhat.com>
Tue, 8 Jan 2019 01:39:43 +0000 (02:39 +0100)
commit5c6ccd53244b7c6e2b7e3809cf95f77ae86afee0
tree59631c991e9b3d91da3941d3975efcfbae14ac6a
parent84d21abf4e36f7d957bfe86f317a74121d2901b4
BaseTools/tools_def.template: remove comment about GCC44 + LzmaF86Compress

"tools_def.template" currently suggests, in the documentation of the
LzmaF86Compress utility, that said tool is generally unhelpful on binaries
built with the GCC44 toolchain, relative to LzmaCompress.

This statement doesn't apply to the GCC48 toolchain. I compressed 126
NOOPT_GCC48/IA32 unique EFI modules (built with gcc-4.8.5, as part of
OVMF) with both LzmaCompress and LzmaF86Compress. I repeated the same for
117 NOOPT_GCC48/X64 unique EFI modules. On average, the LzmaF86Compress
output size was 92.4% of the LzmaCompress output size in the IA32 case
(best relative compression: 86.01%, poorest relative compression: 97.47%
-- still a win). In the X64 case, the LzmaF86Compress output size was
92.95% of the LzmaCompress output size, on avarege (best relative
compression: 87.69%, poorest relative compression: 97.65% -- again, still
a win).

Given the consistent improvement from LzmaCompress to LzmaF86Compress,
remove the statement (rather than updating it to GCC48).

Cc: Bob Feng <bob.c.feng@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Cc: Yonghong Zhu <yonghong.zhu@intel.com>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=1377
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
BaseTools/Conf/tools_def.template