mirror of
https://github.com/libretro/Mesen.git
synced 2024-11-28 03:20:24 +00:00
63 lines
1.6 KiB
Bash
63 lines
1.6 KiB
Bash
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#!/bin/sh
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# This build is used to compile an instrumented version of the binary, run it, and then optimize the binary with the profiling data.
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# LTO is also enabled by default by this script.
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# On clang, this results in a +60% speed boost compared to using just "make" (w/o LTO)
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#
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# Rom files must be copied to the PGOHelper/PGOGames folder beforehand - all *.nes files in that folder will be executed as part of the profiling process.
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# Using a variety of roms is recommended (e.g different mappers, etc.)
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#
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# You can run this script via make:
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# For clang, run "make pgo"
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# For GCC, run "USE_GCC=true make pgo"
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#
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# Note: While GCC runs through this script just fine, the runtime performance is pretty terrible (something must be wrong with the way this is built)
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#
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# This will produce the following binary: bin/x64/Release/Mesen.exe
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if [ "$BUILDTARGET" = core ]; then
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TARG="core"
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else
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TARG=""
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fi
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if [ "$MESENPLATFORM" = x86 ]; then
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PLAT="x86"
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else
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PLAT="x64"
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fi
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OBJ="PGOHelper/obj.${PLAT}/"
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FLAGS="LTO=true MESENPLATFORM=${PLAT}"
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eval ${FLAGS} make clean
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#create instrumented binary
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eval ${FLAGS} PGO=profile make pgohelper -j 16
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eval cp InteropDLL/obj.${PLAT}/libMesenCore.${PLAT}.dll ${OBJ}
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#run the instrumented binary
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cd ${OBJ}
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./pgohelper
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cd ..
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if [ "$USE_GCC" != true ]; then
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#clang-specific steps to convert the profiling data and clean the files
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llvm-profdata merge -output=pgo.profdata pgo.profraw
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cd ..
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eval ${FLAGS} make clean
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else
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cd ..
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fi
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#rebuild using the profiling data to optimize
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eval ${FLAGS} PGO=optimize make ${TARG} -j 16 -B
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if [ "$USE_GCC" != true ]; then
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rm PGOHelper/pgo.profdata
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rm PGOHelper/pgo.profraw
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else
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rm ./*.gcda
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fi
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