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| author | Florian Weimer <fweimer@redhat.com> | 2023-01-03 16:47:32 +0100 |
|---|---|---|
| committer | Florian Weimer <fweimer@redhat.com> | 2023-01-03 16:47:32 +0100 |
| commit | 8fdef16cd5d1b89359db3cd9a9768ab2d1b5081f (patch) | |
| tree | 6b44cd03f6f3e33953b8768e9eedd1cd99dcf55b /gcc/c-family/c-cppbuiltin.cc | |
| parent | 455acc43518744b89d6a795bbba5045bd228060b (diff) | |
| download | gcc-8fdef16cd5d1b89359db3cd9a9768ab2d1b5081f.zip gcc-8fdef16cd5d1b89359db3cd9a9768ab2d1b5081f.tar.gz gcc-8fdef16cd5d1b89359db3cd9a9768ab2d1b5081f.tar.bz2 | |
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.
Diffstat (limited to 'gcc/c-family/c-cppbuiltin.cc')
| -rw-r--r-- | gcc/c-family/c-cppbuiltin.cc | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/gcc/c-family/c-cppbuiltin.cc b/gcc/c-family/c-cppbuiltin.cc index 333f3e1..35f3919 100644 --- a/gcc/c-family/c-cppbuiltin.cc +++ b/gcc/c-family/c-cppbuiltin.cc @@ -1521,6 +1521,9 @@ c_cpp_builtins (cpp_reader *pfile) #endif builtin_define_with_int_value ("__LIBGCC_DWARF_FRAME_REGISTERS__", DWARF_FRAME_REGISTERS); + builtin_define_with_int_value ("__LIBGCC_DWARF_CIE_DATA_ALIGNMENT__", + DWARF_CIE_DATA_ALIGNMENT); + #ifdef EH_RETURN_STACKADJ_RTX cpp_define (pfile, "__LIBGCC_EH_RETURN_STACKADJ_RTX__"); #endif |