Hi, this is another attempt to fix the .LASANPC alignment on s390x. Currently it's not only inefficient ([1]-[5]), but also causes linker errors in template-heavy code ([6]).
The previous attempts to add a new constant for minimum code alignment value ([1]-[5]) did not arouse considerable enthusiasm, and fixing the fallout ([6]) is probably just a wrong thing to do. So here I'm taking another approach: making sure that .LASANPC is aligned on function boundary in the first place. This requires moving the asan_function_start() invocation to ASM_OUTPUT_FUNCTION_LABEL(). Bootstrapped and regtested on x86_64-redhat-linux, ppc64le-redhat-linux and s390x-redhat-linux. Compile tested for platforms listed in [7]. Best regards, Ilya [1] https://gcc.gnu.org/pipermail/gcc-patches/2019-July/525016.html [2] https://gcc.gnu.org/pipermail/gcc-patches/2019-July/525069.html [3] https://gcc.gnu.org/pipermail/gcc-patches/2020-June/548338.html [4] https://gcc.gnu.org/pipermail/gcc-patches/2020-July/549252.html [5] https://patchwork.ozlabs.org/project/gcc/list/?series=320223 [6] https://patchwork.ozlabs.org/project/gcc/list/?series=297132 [7] http://toolchain.lug-owl.de/laminar/jobs Ilya Leoshkevich (2): Implement ASM_DECLARE_FUNCTION_NAME using ASM_OUTPUT_FUNCTION_LABEL asan: Align .LASANPC on function boundary gcc/asan.cc | 6 ++---- gcc/config/aarch64/aarch64.cc | 2 +- gcc/config/alpha/alpha.cc | 5 ++--- gcc/config/arm/aout.h | 2 +- gcc/config/arm/arm.cc | 2 +- gcc/config/bfin/bfin.h | 16 ++++++++-------- gcc/config/c6x/c6x.h | 2 +- gcc/config/gcn/gcn.cc | 5 ++--- gcc/config/h8300/h8300.h | 2 +- gcc/config/i386/i386.cc | 2 +- gcc/config/ia64/ia64.cc | 5 ++--- gcc/config/mcore/mcore-elf.h | 2 +- gcc/config/microblaze/microblaze.cc | 3 +-- gcc/config/mips/mips.cc | 19 ++++++++++--------- gcc/config/pa/pa.cc | 3 ++- gcc/config/riscv/riscv.cc | 2 +- gcc/config/rs6000/rs6000.cc | 4 ++-- gcc/config/s390/s390.cc | 2 +- gcc/defaults.h | 2 +- gcc/final.cc | 3 --- gcc/output.h | 4 ++++ gcc/varasm.cc | 10 ++++++++++ 22 files changed, 55 insertions(+), 48 deletions(-) -- 2.43.0
