Date: Tue, 15 Jan 2013 11:35:49 -0800 From: John-Mark Gurney <jmg@funkthat.com> To: toolchain@FreeBSD.org Subject: temp file turd left behind in odd case... Message-ID: <20130115193549.GB1410@funkthat.com>
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If you try to compile the following file:
#include <wmmintrin.h>
__m128i
bar(__m128i a, __m128i b)
{
return _mm_aesenc_si128(a, b);
}
w/ the command:
clang -D__AES__ -c intrintest.c
You'll get the error:
fatal error: error in backend: Cannot select: intrinsic %llvm.x86.aesni.aesenc
and a intrintest.o-XXXXXXXX temp file left behind from the failed compile...
Yes, the correct way to enable the AES instructions is with the -maes
option, but I didn't know that at the time... Looks like clang doesn't
fully clean up in this case...
I tried this on MacOSX's clang, but the smmintrin.h header prevents me
from compiling w/ the error:
In file included from /usr/bin/../lib/clang/2.1/include/wmmintrin.h:31:
/usr/bin/../lib/clang/2.1/include/smmintrin.h:28:2: error: #error "SSE4.1
instruction set not enabled"
#error "SSE4.1 instruction set not enabled"
It'd be nice if -maes and related SSE enabling options were documented
in the man page... :)
P.S. Not on the list, so CC me if necessary.
--
John-Mark Gurney Voice: +1 415 225 5579
"All that I will do, has been done, All that I have, has not."
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