[Bug bootstrap/62077] --with-build-config=bootstrap-lto fails

["venkataramanan.kumar at amd dot com" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62077

--- Comment #31 from Venkataramanan <venkataramanan.kumar at amd dot com> ---
(In reply to Venkataramanan from comment #30)
> (In reply to Venkataramanan from comment #29)
> > Hi Richard, 
> > 
> > I tried the patch you posted last on GCC patches, on top of GCC 4.9 on
> > Aarch64.
> > https://gcc.gnu.org/ml/gcc-patches/2014-08/msg01324.html
> > 
> > I am still getting same number of compare errors.
> > 
> > Now I will try adding --param ggc-min-expand=100 --param
> > ggc-min-heapsize=131072 to stage2 and stage3 flags.
> 
> I am getting more compare errors in Aarch64 machine in this case.
> aarch64-unknown-linux-gnu/libgcc/_fixunsxfsi.o differs
> aarch64-unknown-linux-gnu/libgcc/_fixxfdi_s.o differs
> aarch64-unknown-linux-gnu/libgcc/_fixunsxfsi_s.o differs
> aarch64-unknown-linux-gnu/libgcc/_ctors_s.o differs
> aarch64-unknown-linux-gnu/libgcc/_floatdixf.o differs
> aarch64-unknown-linux-gnu/libgcc/_popcount_tab_s.o differs
> aarch64-unknown-linux-gnu/libgcc/_powixf2.o differs
> aarch64-unknown-linux-gnu/libgcc/unwind-sjlj.o differs
> aarch64-unknown-linux-gnu/libgcc/unwind-sjlj_s.o differs
> aarch64-unknown-linux-gnu/libgcc/crtendS.o differs
> gcc/sdbout.o differs
> gcc/c/c-lang.o differs
> gcc/graphite-poly.o differs
> gcc/graphite-dependences.o differs
> gcc/crtend.o differs
> gcc/vmsdbgout.o differs
> gcc/hw-doloop.o differs
> gcc/graphite-optimize-isl.o differs
> gcc/version.o differs
> gcc/target-globals.o differs
> gcc/graphite-interchange.o differs
> gcc/collect2-aix.o differs
> gcc/graphite-scop-detection.o differs
> gcc/loop-doloop.o differs
> gcc/graphite-blocking.o differs
> gcc/graphite-clast-to-gimple.o differs
> gcc/build/min-insn-modes.o differs
> gcc/build/version.o differs
> gcc/graphite-sese-to-poly.o differs
> gcc/insn-peep.o differs
> gcc/insn-enums.o differs
> gcc/xcoffout.o differs
> gcc/crtendS.o differs
> libbacktrace/atomic.o differs
> libiberty/pic/safe-ctype.o differs
> libiberty/pic/getopt.o differs
> libiberty/pic/obstack.o differs
> libiberty/pic/fnmatch.o differs
> libiberty/pic/getopt1.o differs
> libiberty/safe-ctype.o differs
> libiberty/getopt.o differs
> libiberty/obstack.o differs
> libiberty/fnmatch.o differs
> libiberty/getopt1.o differs
> 
> 
> I will try to test the patch on x86_64 machine now.

Richard, 

I thought I used existing build directory for the patch test. 
So did another build with gcc 4.9 + garbage collector tuning flags for stage2/3
on Aarch64.

(Snip)
STAGE2_CFLAGS += -flto=jobserver -frandom-seed=1 -ffat-lto-objects --param
ggc-min-expand=100 --param ggc-min-heapsize=131072
STAGE3_CFLAGS += -flto=jobserver -frandom-seed=1 -ffat-lto-objects --param
ggc-min-expand=100 --param ggc-min-heapsize=131072
(Snip)
Bootstrap passes cleanly.