Gilles Peskine c76f82db27 Work around GCC 5 performance problem with Asan+UBSan and -O3 ...

Old GCC versions hit a performance problem with test_suite_pkwrite
"Private keey write check EC" tests when building with Asan+UBSan
and -O3: those tests take more than 100x time than normal, with
test_suite_pkwrite taking >3h on the CI. Observed with GCC 5.4 on
Ubuntu 16.04 x86_64 and GCC 6.5 on Ubuntu 18.04 x86_64.
GCC 7.5 and above on Ubuntu 18.04 appear fine.

To avoid the performance problem, use -O2 instead of -O3 in then "Asan"
build type with GCC. It doesn't slow down much even with modern compiler
versions.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>

2024-10-16 10:31:29 +02:00

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