Fwd: Question on parallel execution inside the processor

Fwd: Question on parallel execution inside the processor

[N8TM]

In a message dated 6/23/98 1:47:36 PM Pacific Daylight Time,
martin.kahlert@mchp.siemens.de writes:

> Is there any part of gcc, which tries to take advantage
>  of parallel execution inside the processor

I believe that's one reason the MIPS port doesn't support gas.  The MIPS
assembler generally achieves 70% of the performance of a native compiler when
used with egcs on R10K, which is getting a boost both from the assembler and
from the hardware out-of-order execution.  There's a cost, of course-- no gdb,
considerable loss of profiling information.

Re: Fwd: Question on parallel execution inside the processor

[Michael Meissner]

| I believe that's one reason the MIPS port doesn't support gas.  The MIPS
| assembler generally achieves 70% of the performance of a native compiler when
| used with egcs on R10K, which is getting a boost both from the assembler and
| from the hardware out-of-order execution.  There's a cost, of course-- no gdb,
| considerable loss of profiling information.

GCC has supported GAS on the MIPS for about 7 years now.  Granted GAS doesn't
optimize like the MIPS assembler does, but GCC does indeed support it.  You do
have to specify the appropriate --with-gnu-as and --with-gnu-ld when
configuring GCC to clue it in that you are using GAS and the GNU linker.

--
Michael Meissner, Cygnus Solutions (Massachusetts office)
4th floor, 955 Massachusetts Avenue, Cambridge, MA 02139, USA
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