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Change profile-build options to produce 1% to 2% faster executables.
The "@rm ucioption.gc*" line is necessary to avoid a gcc 4.7.x bug. Confirmed for gcc 4.7.4, 4.8.1, and 4.9.1 Suggested by Kiran Panditrao on fishcooking forum. https://groups.google.com/forum/?fromgroups=#!topic/fishcooking/AY8gN53nG18 No functional change. Resolves #160
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1 changed files with 5 additions and 2 deletions
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@ -373,6 +373,9 @@ profile-build:
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@$(PGOBENCH) > /dev/null
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@echo ""
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@echo "Step 3/4. Building final executable ..."
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# Deleting corrupt ucioption.gc* profile files is necessary to avoid an
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# "internal compiler error" for gcc versions 4.7.x
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@rm ucioption.gc*
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@touch *.cpp *.h syzygy/*.cpp syzygy/*.h
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$(MAKE) ARCH=$(ARCH) COMP=$(COMP) $(profile_use)
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@echo ""
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@ -439,13 +442,13 @@ gcc-profile-prepare:
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gcc-profile-make:
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$(MAKE) ARCH=$(ARCH) COMP=$(COMP) \
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EXTRACXXFLAGS='-fprofile-generate' \
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EXTRACXXFLAGS='-fprofile-arcs' \
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EXTRALDFLAGS='-lgcov' \
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all
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gcc-profile-use:
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$(MAKE) ARCH=$(ARCH) COMP=$(COMP) \
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EXTRACXXFLAGS='-fprofile-use' \
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EXTRACXXFLAGS='-fbranch-probabilities' \
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EXTRALDFLAGS='-lgcov' \
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all
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