[PATCH][i386]Fix PR 57756

[Sriraman Tallam]

On Thu, Oct 17, 2013 at 1:23 PM, Mike Stump <mikestump@comcast.net> wrote:
> On Oct 17, 2013, at 10:23 AM, Sriraman Tallam <tmsriram@google.com> wrote:
>>> You probably want to do something similar to what I did in the powerpc.
>>
>> I would need the help of target maintainers to fix it this way since
>> it touches every target and it would take time for me to build and
>> test every target.
>
> For changes that only need a compile to ensure one didn't brake a port, a configure and build of a target is 2 minutes.  Over night (6 hours), you can 180 targets.  Before you laugh, there are people that have done this sort of building in the past as well.  The hardest part, literally, would be to come up with the list of targets.

Thanks. This is the list of affected targets extracted from the link
JBG pointed to:  http://toolchain.lug-owl.de/buildbot/?limit=1500

"alpha-linux,bfin-elf,cr16-elf,epiphany-elf,frv-linux,h8300-elf,hppa-linux,m32c-elf,m68k-linux,mep-elf,microblaze-linux,mips64el-linux,mips64-linux,mipsel-linux,mips-linux,mmix,nios2-elf,powerpc64le-linux,powerpc64-linux,powerpcle-linux,powerpc-linux,ppc64-linux,ppc-linux,rl78-elf,rs6000-ibm-aix4.3,s390-linux,s390x-linux,sparc64-linux,sparc-linux,spu,spu-elf,vax-linux,xtensa-linux"

Status: With the patch below, x86_64, i386 and powerpc native
bootstrap is fine. x86_64 has one test regression in
gfortran.dg/lto/pr45586 which I am looking into. Also, mips and
mips-64 cross-compiler builds fine.

I can check cross-compile builds on all the affected targets listed
above. If this all works, I suggest using this patch to put out the
current fires and proceed with individual changes to each target
later.  Also, there are some test case failures when built in non-sse
configs in i386. I can get to it after unbreaking this. Is this
reasonable?

Thanks
Sri


Index: opth-gen.awk
===================================================================
--- opth-gen.awk (revision 203779)
+++ opth-gen.awk (working copy)
@@ -114,6 +114,7 @@
 print "extern struct gcc_options global_options;"
 print "extern const struct gcc_options global_options_init;"
 print "extern struct gcc_options global_options_set;"
+print "#define target_flags_explicit global_options_set.x_target_flags"
 print "#endif"
 print "#endif"
 print ""