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| author | Andi Kleen <ak@linux.intel.com> | 2014-09-01 16:41:28 +0000 |
|---|---|---|
| committer | Andi Kleen <ak@gcc.gnu.org> | 2014-09-01 16:41:28 +0000 |
| commit | e04733ee53069a993a841bc0747c5c7290791230 (patch) | |
| tree | 5101ad662599b9013f8ccaabee2c19dc2bf5ab54 /Makefile.tpl | |
| parent | b5617e5f69bdd5ad7a3da9b34d1871fb2aff940a (diff) | |
Support slim LTO bootstrap
Change the bootstrap-lto config file to use slim (non fat) LTO..
Speeds up the LTO bootstrap by ~18% on a 4 core system.
This requires using gcc-ar/ranlib in post stage 1 builds, so these
are passed to all sub builds.
config/:
2014-09-01 Andi Kleen <ak@linux.intel.com>
* bootstrap-lto.mk: Implement slim bootstrap.
/:
2014-09-01 Andi Kleen <ak@linux.intel.com>
* Makefile.tpl (POSTSTAGE1_HOST_EXPORTS): Add LTO_EXPORTS.
POSTSTAGE1_FLAGS_TO_PASS): Add LTO_FLAGS_TO_PASS.
* Makefile.in: Regenerate.
From-SVN: r214801
Diffstat (limited to 'Makefile.tpl')
| -rw-r--r-- | Makefile.tpl | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/Makefile.tpl b/Makefile.tpl index 00dba363a9d..f7c7e38cdde 100644 --- a/Makefile.tpl +++ b/Makefile.tpl @@ -260,6 +260,7 @@ POSTSTAGE1_HOST_EXPORTS = \ $(XGCC_FLAGS_FOR_TARGET) $$TFLAGS"; export CC; \ CC_FOR_BUILD="$$CC"; export CC_FOR_BUILD; \ $(POSTSTAGE1_CXX_EXPORT) \ + $(LTO_EXPORTS) \ GNATBIND="$$r/$(HOST_SUBDIR)/prev-gcc/gnatbind"; export GNATBIND; \ LDFLAGS="$(POSTSTAGE1_LDFLAGS) $(BOOT_LDFLAGS)"; export LDFLAGS; \ HOST_LIBS="$(POSTSTAGE1_LIBS)"; export HOST_LIBS; @@ -633,6 +634,7 @@ POSTSTAGE1_FLAGS_TO_PASS = \ GNATBIND="$${GNATBIND}" \ LDFLAGS="$${LDFLAGS}" \ HOST_LIBS="$${HOST_LIBS}" \ + $(LTO_FLAGS_TO_PASS) \ "`echo 'ADAFLAGS=$(BOOT_ADAFLAGS)' | sed -e s'/[^=][^=]*=$$/XFOO=/'`" # Flags to pass down to makes which are built with the target environment. |