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Able patch gcc2.5.8 for memcpy()+mips3 defect?
- From: Stephen Roderick <stephen_roderick at ssl dot umd dot edu>
- To: gcc-patches at gcc dot gnu dot org
- Date: Mon, 18 Feb 2002 10:01:56 -0500
- Subject: Able patch gcc2.5.8 for memcpy()+mips3 defect?
- Organization: Space Systems Lab
Is it possible to obtain patches to old releases instead of upgrading?
If so, where can I go to start looking for them?
We've found a bug in gcc2.5.8 using the SDE-MIPS tool chain which causes
inline memcpy()'s under the mips 3 instruction set to be incorrect
(appears to be incorrectly emitted unaligned 64-bit read/writes).
Upgrading to a later release is not an option as we're only a couple of
months from delivery.
We can work around the issue by using the mips 2 instruction sets (small
performance hit) or using the -mmemcpy option to use the memcpy function
itself (larger performance hit). Performance on this embedded system is
critical, hence the question. Is it possible to get a patch for just
this issue on this realease?
Any assistance is appreciated!
Stephen