This patch kit fixes scaling issues for the input cache, especially for C, motivated by PR118168.
In overall in number of lines it is practically neutral: gcc/input.cc | 261 ++++++++++++++++++++++++++++++++++++++++++++++++++++---------------------------------------------------------- gcc/input.h | 4 +- gcc/params.opt | 8 ++++ gcc/toplev.cc | 2 + 4 files changed, 137 insertions(+), 138 deletions(-) It is a bit large for stage 3 however. I guess a minimal fix for PR118168 would be the first and second patch only, which can make the test case work in reasonable time with a single --param. The full fix is the full patchkit. More could be done, e.g. using mmap and vectorizing the line search function, but the worst problems are fixed.
