| commit | 8fdef16cd5d1b89359db3cd9a9768ab2d1b5081f | |
| author | Florian Weimer <fweimer@redhat.com> | |
| Tue, 3 Jan 2023 15:47:32 +0000 (3 16:47 +0100) | ||
| committer | Florian Weimer <fweimer@redhat.com> | |
| Tue, 3 Jan 2023 15:47:32 +0000 (3 16:47 +0100) | ||
| tree | 6b44cd03f6f3e33953b8768e9eedd1cd99dcf55b | treesnapshot (tar.gz zip) |
| parent | 455acc43518744b89d6a795bbba5045bd228060b | commitdiff |
libgcc: Specialize execute_cfa_program in DWARF unwinder for alignments [redo]
The parameters fs->data_align and fs->code_align always have fixed
values for a particular target in GCC-generated code. Specialize
execute_cfa_program for these values, to avoid multiplications.
gcc/c-family/
* c-cppbuiltin.cc (c_cpp_builtins): Define
__LIBGCC_DWARF_CIE_DATA_ALIGNMENT__.
libgcc/
* unwind-dw2-execute_cfa.h: New file. Extracted from
the execute_cfa_program function in unwind-dw2.c.
* unwind-dw2.c (execute_cfa_program_generic): New function.
(execute_cfa_program_specialized): Likewise.
(execute_cfa_program): Call execute_cfa_program_specialized
or execute_cfa_program_generic, as appropriate.
The parameters fs->data_align and fs->code_align always have fixed
values for a particular target in GCC-generated code. Specialize
execute_cfa_program for these values, to avoid multiplications.
gcc/c-family/
* c-cppbuiltin.cc (c_cpp_builtins): Define
__LIBGCC_DWARF_CIE_DATA_ALIGNMENT__.
libgcc/
* unwind-dw2-execute_cfa.h: New file. Extracted from
the execute_cfa_program function in unwind-dw2.c.
* unwind-dw2.c (execute_cfa_program_generic): New function.
(execute_cfa_program_specialized): Likewise.
(execute_cfa_program): Call execute_cfa_program_specialized
or execute_cfa_program_generic, as appropriate.
| gcc/c-family/c-cppbuiltin.cc | diffblobblamehistory | |
| libgcc/unwind-dw2-execute_cfa.h | [new file with mode: 0644] | blob |
| libgcc/unwind-dw2.c | diffblobblamehistory |