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Driver: Set TOOL_NO_EXPORTS when building a "production" compiler, we don't 

currently expect that to be useful for plugins, and this is important for
startup performance:
--
ddunbar@lordcrumb:tmp$ touch empty.c
ddunbar@lordcrumb:tmp$ runN 100 ~/llvm.obj.64/Release/bin/clang -c empty.c
name	  avg  	  min  	  med  	  max  	   SD  	 total 
user	 0.0054	 0.0052	 0.0054	 0.0055	 0.0000	 0.5350
 sys	 0.0084	 0.0090	 0.0078	 0.0087	 0.0008	 0.8390
wall	 0.0149	 0.0149	 0.0149	 0.0149	 0.0003	 1.4943
ddunbar@lordcrumb:tmp$ runN 100 ~/llvm.obj.64/Release/bin/clang -c empty.c
name	  avg  	  min  	  med  	  max  	   SD  	 total 
user	 0.0036	 0.0036	 0.0036	 0.0038	 0.0000	 0.3646
 sys	 0.0072	 0.0071	 0.0068	 0.0070	 0.0006	 0.7158
wall	 0.0123	 0.0123	 0.0122	 0.0136	 0.0003	 1.2262
--

llvm-svn: 113638
This commit is contained in:
Daniel Dunbar 2010-09-10 21:42:03 +00:00
parent 1f77ee5691
commit b5b7d1a415
1 changed files with 6 additions and 0 deletions
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6
clang/tools/driver/Makefile
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@ -17,6 +17,12 @@ else
endif
endif
# We don't currently expect production Clang builds to be interested in
# plugins. This is important for startup performance.
ifdef CLANG_IS_PRODUCTION
TOOL_NO_EXPORTS := 1
endif
# Include tool version information on OS X.
TOOL_INFO_PLIST := Info.plist