Re: -fast destroys ppc_intrinsic functions
Re: -fast destroys ppc_intrinsic functions
- Subject: Re: -fast destroys ppc_intrinsic functions
- From: email@hidden
- Date: Mon, 2 Feb 2004 11:19:40 -0800
"Note that -ffast-math, -fstrict-aliasing and -malign-natural are
unsafe in some situations." (These are some of the options turned on by
'-fast'...)
The man page for gcc will tell you what flags are turned on by '-fast'
so you can enable what you really need. It's not a panacea.
-ChrisF
On Jan 31, 2004, at 6:34 PM, Brian Barnes wrote:
Can anybody tell me how I can still use ppc_intrinsic functions (like
astrcmp, __frsqrtes, __fmadds) when I have the -fast flag on? I've
tried lots of different combinations to no avail.
For instance:
-fast -mcpu=G4 -mtune=G4 -force_cpusubtype_ALL
Doesn't seem to make it work. I find it hard to believe this compiler
option and these calls would be mutually exclusive :)
[>] Brian
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