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| author | Oliver Stannard <oliver.stannard@arm.com> | 2014-08-18 12:42:15 +0000 |
|---|---|---|
| committer | Oliver Stannard <oliver.stannard@arm.com> | 2014-08-18 12:42:15 +0000 |
| commit | 12993dd916d4b1bbe7eb60e4a4b031f3dc760424 (patch) | |
| tree | 832fa7be8ff625b9b5852b69c34297b5d19c9a0a /lldb/source/Core/ArchSpec.cpp | |
| parent | 34d2d76d25f39a07b34b0c66f9a8a1d5174640c7 (diff) | |
| download | bcm5719-llvm-12993dd916d4b1bbe7eb60e4a4b031f3dc760424.tar.gz bcm5719-llvm-12993dd916d4b1bbe7eb60e4a4b031f3dc760424.zip | |
[ARM,AArch64] Do not tail-call to an externally-defined function with weak linkage
Externally-defined functions with weak linkage should not be
tail-called on ARM or AArch64, as the AAELF spec requires normal calls
to undefined weak functions to be replaced with a NOP or jump to the
next instruction. The behaviour of branch instructions in this
situation (as used for tail calls) is implementation-defined, so we
cannot rely on the linker replacing the tail call with a return.
llvm-svn: 215890
Diffstat (limited to 'lldb/source/Core/ArchSpec.cpp')
0 files changed, 0 insertions, 0 deletions
