[Bug target/40236] i386: request a single option to turn off all instructions which can cause #TS
ubizjak at gmail dot com
gcc-bugzilla@gcc.gnu.org
Sun May 24 19:19:00 GMT 2009
------- Comment #4 from ubizjak at gmail dot com 2009-05-24 19:19 -------
(In reply to comment #1)
> I don't see why adding -mno-mmx is a problem (that disables all of the MMX and
> SSE instructions). -mno-mmx will always disabling all of the future subsets
> too.
No, MMX and SSE are handled separatelly. -mno-mmx disables MMX regs. It is
-mno-sse that turns off SSE registers and everything SSE related, including
AVX.
-mno-80387 should disable x87 instructions.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40236
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