:I've not looked at 3.3, but I seem to recall that GCC 3.2
:did not actually align the stack within each function, but
:preserved the alignment. (That is, each function assumed the stack
:had a certain alignment on entry and ensured that alignment
:was preserved for any subsequent function calls.)
Matthew Dillon wrote:
I'm surprised Bruce hasn't chimed in here yet. I guess he's tired of
repeating himself.
In 4.9, libcsu, which generates crt1.o (which is the start code for
C programs which the linker links in automatically) has this line in it:
andl$~0xf, %%esp
I'm surprised Bruce hasn't chimed in here yet. I guess he's tired of
repeating himself.
In 4.9, libcsu, which generates crt1.o (which is the start code for
C programs which the linker links in automatically) has this line in it:
andl$~0xf, %%esp# align
"Juan Tumani" <[EMAIL PROTECTED]> writes:
> I patched in the patch shown below and it didn't fix the problem, it
> only changed the frequency of the spikes to 32 on/off.
try replacing 0x1F with 0x3F in the patch and see what happens.
That seems to work in that it flattens the line out. Not sure w
"Juan Tumani" <[EMAIL PROTECTED]> writes:
> I patched in the patch shown below and it didn't fix the problem, it
> only changed the frequency of the spikes to 32 on/off.
try replacing 0x1F with 0x3F in the patch and see what happens.
DES
--
Dag-Erling Smørgrav - [EMAIL PROTECTED]
___
ience with
the kern
pacthed on your system?
JT
From: Wes Peters <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED] (Dag-Erling Smørgrav),Alexandr Kovalenko
<[EMAIL PROTECTED]>
CC: [EMAIL PROTECTED], Juan Tumani <[EMAIL PROTECTED]>
Subject: Re: FreeBSD 5.2 v/s FreeBSD 4.9 MFLOPS p
;
CC: [EMAIL PROTECTED], Juan Tumani <[EMAIL PROTECTED]>
Subject: Re: FreeBSD 5.2 v/s FreeBSD 4.9 MFLOPS performance (gcc3.3.3
v/sgcc2.9.5)
Date: Mon, 16 Feb 2004 03:52:16 -0800
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