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base repository: AOSPA/android_bionic
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head repository: aospa-cupid/android_bionic
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compare: uvite
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  • 8 commits
  • 8 files changed
  • 6 contributors

Commits on Jun 16, 2024

  1. libc: Enable thinLTO for note_memtag_heap_async & note_memtag_heap_sync 

    Somehow this fixes build with GLOBAL_THINLTO=1

Change-Id: I4c7b8ffb6fe01fe91d08d144dca4c4b60bf6dd7e
Signed-off-by: Pranav Vashi <[email protected]>
Signed-off-by: Cyber Knight <[email protected]>
    @mesziman
    mesziman authored and Timo Dorfner committed Jun 16, 2024
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  2. Re-enable LTO for libm 

    The build breakage is now fixed by the current stable Clang, workaround
is no longer needed.

Test: presubmit
Change-Id: I1bf6081c97fba54e5f21951b20cd4fd6dd152143
Signed-off-by: Cyber Knight <[email protected]>
    @kongy
    kongy authored and Timo Dorfner committed Jun 16, 2024
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  3. Re-enable LTO for libdl 

    The build breakage is now fixed by the current stable Clang, workaround
is no longer needed.

Test: presubmit
Bug: 169004486
Change-Id: Id8df8efeb9f4183921cbf75f1c51b1507bff1eb0
Signed-off-by: Cyber Knight <[email protected]>
    @kongy
    kongy authored and Timo Dorfner committed Jun 16, 2024
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  4. Re-enable LTO for linker 

    The build breakage is now fixed by the current stable Clang, workaround
is no longer needed.

Test: presubmit
Change-Id: Ice2863844ff886f503d50fa7a006cde78d16492d
Signed-off-by: Cyber Knight <[email protected]>
    @kongy
    kongy authored and Timo Dorfner committed Jun 16, 2024
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  5. libdl: do not disable LTO 

    Yet another partial revert of 15a05a7

Change-Id: I4262a8b59258e2065a84cdb79c429604df50f5ba
Signed-off-by: Cyber Knight <[email protected]>
    @RealJohnGalt
    RealJohnGalt authored and Timo Dorfner committed Jun 16, 2024
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  6. Let executables not rely on sentinels in preinit_array/init_array/fin… 

    …i_array

Currently, we use sentinels (starting with -1 and ending with 0) in
preinit_array/init_array/fini_array in executables. But after using LTO,
the sentinels can be reordered by LLD and no longer work. So make below
changes to not rely on them:
  1. In crtbegin.c, use symbols (like __init_array_start) inserted by the
     linker.
  2. Add array_count fields in structors_array_t.
  3. In static libc, use array_count fields to decide array lengths.
  4. To make new dynamic executables work with old libc.so, create a fake
     fini_array with sentinels, and pass it to __libc_init. The fake
     fini_array contains a function to call functions in real fini_array.
  5. To make old dynamic executables work with new libc.so, libc.so
     still uses sentinels to decide the length of fini_array.

Bug: 295944813
Bug: android/ndk#1461
Test: run bionic-unit-tests-static
Test: test static executables manually
Test: boot cf_gwear_x86-trunk_staging-userdebug
Change-Id: I1ce31f07bcfe0e99b4237984898a8fc9e98ff426
Signed-off-by: Cyber Knight <[email protected]>
    @yabinc
    yabinc authored and Timo Dorfner committed Jun 16, 2024
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Commits on Jul 25, 2024

  1. Merge https://gitlab.timodo.de/aospa/lto/android_bionic into HEAD 

    Change-Id: I1445fb38fddaea6fb78aa5a966bea2db5b818888
    @rk134
    rk134 committed Jul 25, 2024
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  2. bionic: Optimize libc for performance 

    libc is a library that is used across android constantly.
Use O3 to compile it for performance.

Change-Id: I2f2eca0b37ed056dc470c76201a24f0c8784043f
    @mvaisakh @rk134
    mvaisakh authored and rk134 committed Jul 25, 2024
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