It isn't, but for automatically making breakdowns like the ones at http://clang.llvm.org/performance.html its much simpler to just use "-Xclang -empty-input-only" than to try and modify the build system.
- Daniel On Mon, Apr 27, 2009 at 4:20 PM, Eli Friedman <[email protected]>wrote: > On Mon, Apr 27, 2009 at 2:19 PM, Daniel Dunbar <[email protected]> wrote: > > Author: ddunbar > > Date: Mon Apr 27 16:19:07 2009 > > New Revision: 70249 > > > > URL: http://llvm.org/viewvc/llvm-project?rev=70249&view=rev > > Log: > > Add -empty-input-only option, for timing. > > - Forces input file to be empty to time startup/shutdown costs. > > How is this different from just using /dev/null as the input? > > -Eli >
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