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| author |   Arvind Sankar <nivedita@alum.mit.edu> | 2020-08-19 10:08:16 -0400 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2020-08-19 11:23:45 -0700 |
| commit | 33d0f96ffd7394ffb208bb366be312d12dfd24a4 (patch) | |
| tree | 786d9469c3f97b255001d323964ad23b83118728 /drivers/vfio/pci/vfio_pci_private.h | |
| parent | x86/boot/compressed: Use builtin mem functions for decompressor (diff) | |
| download | linux-dev-33d0f96ffd7394ffb208bb366be312d12dfd24a4.tar.xz linux-dev-33d0f96ffd7394ffb208bb366be312d12dfd24a4.zip | |
lib/string.c: Use freestanding environment
gcc can transform the loop in a naive implementation of memset/memcpy
etc into a call to the function itself. This optimization is enabled by
-ftree-loop-distribute-patterns.
This has been the case for a while, but gcc-10.x enables this option at
-O2 rather than -O3 as in previous versions.
Add -ffreestanding, which implicitly disables this optimization with
gcc. It is unclear whether clang performs such optimizations, but
hopefully it will also not do so in a freestanding environment.
Signed-off-by: Arvind Sankar <nivedita@alum.mit.edu>
Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56888
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/vfio/pci/vfio_pci_private.h')
0 files changed, 0 insertions, 0 deletions