diff options
| author | Paul Brook <paul@codesourcery.com> | 2008-03-16 00:58:57 +0000 |
|---|---|---|
| committer | Paul Brook <pbrook@gcc.gnu.org> | 2008-03-16 00:58:57 +0000 |
| commit | 80efdb6af52e8d0c24ab70537cf81a6b0a17f95e (patch) | |
| tree | b5d4dd29fc14b449358799f47a76a45cbf01daf9 | |
| parent | 393ab2528439344bdad70371c8a1023474e087da (diff) | |
arm.c (arm_unwind_emit): Suppress unused unwinding annotations.
2008-03-15 Paul Brook <paul@codesourcery.com>
gcc/
* config/arm/arm.c (arm_unwind_emit): Suppress unused unwinding
annotations.
(arm_output_fn_unwind): Mark functions that can not be unwound.
From-SVN: r133266
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/config/arm/arm.c | 17 |
2 files changed, 22 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index fcb1623cc30..bb89350e4d4 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,11 @@ 2008-03-15 Paul Brook <paul@codesourcery.com> + * config/arm/arm.c (arm_unwind_emit): Suppress unused unwinding + annotations. + (arm_output_fn_unwind): Mark functions that can not be unwound. + +2008-03-15 Paul Brook <paul@codesourcery.com> + * config/arm/arm.c (arm_rtx_costs_1): Add costs for ARMv6 value extension instructions. diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c index 4fb0a0d1f1e..43a3078278d 100644 --- a/gcc/config/arm/arm.c +++ b/gcc/config/arm/arm.c @@ -18633,6 +18633,11 @@ arm_unwind_emit (FILE * asm_out_file, rtx insn) if (!ARM_EABI_UNWIND_TABLES) return; + if (!(flag_unwind_tables || cfun->uses_eh_lsda) + && (TREE_NOTHROW (current_function_decl) + || cfun->all_throwers_are_sibcalls)) + return; + if (GET_CODE (insn) == NOTE || !RTX_FRAME_RELATED_P (insn)) return; @@ -18713,7 +18718,17 @@ arm_output_fn_unwind (FILE * f, bool prologue) if (prologue) fputs ("\t.fnstart\n", f); else - fputs ("\t.fnend\n", f); + { + /* If this function will never be unwound, then mark it as such. + The came condition is used in arm_unwind_emit to suppress + the frame annotations. */ + if (!(flag_unwind_tables || cfun->uses_eh_lsda) + && (TREE_NOTHROW (current_function_decl) + || cfun->all_throwers_are_sibcalls)) + fputs("\t.cantunwind\n", f); + + fputs ("\t.fnend\n", f); + } } static bool |