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| author | Richard Henderson <rth@redhat.com> | 2005-11-02 17:40:33 -0800 |
|---|---|---|
| committer | Richard Henderson <rth@gcc.gnu.org> | 2005-11-02 17:40:33 -0800 |
| commit | 150cdc9e16e86173fe7116e12dbcc4cc8fb6b789 (patch) | |
| tree | 6cea9b2ad7c60bdcd1ca27428519046f1cb9729f /gcc/targhooks.c | |
| parent | 3a0588c4e01a7cbeaf3a54360ffaba27fc8caf25 (diff) | |
| download | gcc-150cdc9e16e86173fe7116e12dbcc4cc8fb6b789.zip gcc-150cdc9e16e86173fe7116e12dbcc4cc8fb6b789.tar.gz gcc-150cdc9e16e86173fe7116e12dbcc4cc8fb6b789.tar.bz2 | |
re PR target/9350 (-fomit-frame-pointer does not work for main)
PR target/9350
PR target/24374
* dwarf2out.c (dwarf2out_reg_save_reg): New.
(dwarf2out_frame_debug_expr): Return after dwarf_handle_frame_unspec.
* function.c (assign_parms): Use calls.internal_arg_pointer.
(expand_main_function): Remove FORCE_PREFERRED_STACK_BOUNDARY_IN_MAIN
code.
* target-def.h (TARGET_INTERNAL_ARG_POINTER): New.
(TARGET_CALLS): Add it.
* target.h (struct gcc_target): Add calls.internal_arg_pointer.
* targhooks.c (default_internal_arg_pointer): New.
* targhooks.h (default_internal_arg_pointer): Declare.
* tree.h (dwarf2out_reg_save_reg): Declare.
* doc/tm.texi (FORCE_PREFERRED_STACK_BOUNDARY_IN_MAIN): Remove.
* config/i386/i386.c (dbx_register_map): Add return column.
(dbx64_register_map, svr4_dbx_register_map): Likewise.
(TARGET_INTERNAL_ARG_POINTER, ix86_internal_arg_pointer): New.
(TARGET_DWARF_HANDLE_FRAME_UNSPEC, ix86_dwarf_handle_frame_unspec): New. (ix86_function_ok_for_sibcall): Disable if force_align_arg_pointer.
(ix86_save_reg): Save force_align_arg_pointer.
(ix86_emit_save_regs): Make regno unsigned.
(ix86_emit_save_regs_using_mov): Likewise.
(ix86_expand_prologue): Handle force_align_arg_pointer.
(ix86_expand_epilogue): Likewise.
* config/i386/i386.h: (dbx_register_map): Update.
(dbx64_register_map, svr4_dbx_register_map): Update.
(struct machine_function): Add force_align_arg_pointer.
* config/i386/i386.md (UNSPEC_REG_SAVE, UNSPEC_DEF_CFA): New.
(UNSPEC_TP, UNSPEC_TLS_GD, UNSPEC_TLS_LD_BASE): Renumber.
(TARGET_PUSH_MEMORY peepholes): Disable if RTX_FRAME_RELATED_P.
From-SVN: r106420
Diffstat (limited to 'gcc/targhooks.c')
| -rw-r--r-- | gcc/targhooks.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/gcc/targhooks.c b/gcc/targhooks.c index c0c4201..94469a7 100644 --- a/gcc/targhooks.c +++ b/gcc/targhooks.c @@ -62,6 +62,7 @@ Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA #include "tm_p.h" #include "target-def.h" #include "ggc.h" +#include "hard-reg-set.h" void @@ -439,4 +440,19 @@ default_function_value (tree ret_type ATTRIBUTE_UNUSED, #endif } +rtx +default_internal_arg_pointer (void) +{ + /* If the reg that the virtual arg pointer will be translated into is + not a fixed reg or is the stack pointer, make a copy of the virtual + arg pointer, and address parms via the copy. The frame pointer is + considered fixed even though it is not marked as such. */ + if ((ARG_POINTER_REGNUM == STACK_POINTER_REGNUM + || ! (fixed_regs[ARG_POINTER_REGNUM] + || ARG_POINTER_REGNUM == FRAME_POINTER_REGNUM))) + return copy_to_reg (virtual_incoming_args_rtx); + else + return virtual_incoming_args_rtx; +} + #include "gt-targhooks.h" |