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Re: [PATCH, v8] Vectorized _cpp_clean_line
- From: Rainer Orth <ro at CeBiTec dot Uni-Bielefeld dot DE>
- To: Richard Henderson <rth at redhat dot com>
- Cc: GCC Patches <gcc-patches at gcc dot gnu dot org>, Andi Kleen <ak at linux dot intel dot com>, "David S. Miller" <davem at davemloft dot net>
- Date: Mon, 23 Aug 2010 20:14:26 +0200
- Subject: Re: [PATCH, v8] Vectorized _cpp_clean_line
- References: <4C702671.2090204@redhat.com>
Richard Henderson <rth@redhat.com> writes:
> Tested on {i686,x86_64,ppc64,ia64}-linux. On the
> ppc64 box, I used BOOT_CFLAGS with -mcpu=G5 in order
> to enable the Altivec path.
Just returned from a 3-week vacation and found Solaris/x86 bootstrap
broken by this patch in two different ways:
* On Solaris 8 with Sun as, there's no SSE2 support, so we get errors
assembling lex.s:
Assembler: lex.c
"lex.s", line 869 : Illegal mnemonic
"lex.s", line 869 : Syntax error
"lex.s", line 869 : Illegal mnemonic
[...]
movdqa repl_chars, %xmm6
Even when using gas instead, cc1 dies with SIGILL since Solaris 8
cannot execute SSE/SSE2 instructions at all.
* On Solaris 10 with Sun as, cc1 (and the other backends) are tagged as
requiring SSE4.2, so ld.so.1 refuses to execute cc1 on a machine that
lacks the necessary hardware. This could be fixed like
http://gcc.gnu.org/ml/gcc-patches/2010-02/msg00985.html
Rainer
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Rainer Orth, Center for Biotechnology, Bielefeld University