Messages in this thread |  | | | Date | Wed, 28 Dec 2005 13:47:04 +0100 | | From | Sam Ravnborg <> | | Subject | Re: [patch 02/2] allow gcc4 to optimize unit-at-a-time |
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On Wed, Dec 28, 2005 at 08:04:35AM -0500, Jakub Jelinek wrote: > No. > -fno-unit-at-a-time should be used with GCCs that > a) support it > b) are older than GCC 4.0 > > The "$(GCC_VERSION) -lt 0400" test cares of b), > $(call cc-option,-fno-unit-at-a-time) cares of a).
There was a reason for disabling it unconditionally in first place. That was due to unexpected huge stack usage if I understand correct. Ingo's patch enebles unit-at-a-time only for gcc > 4.00 which should have this issue fixed. If the argument is that we suddenly shall enable unit-at-a-time for gcc before 4.00 then we should visit the reasons why it originally was disabled.
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