diff options
Diffstat (limited to 'gcc/config/sparc/sparc.c')
| -rw-r--r-- | gcc/config/sparc/sparc.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/gcc/config/sparc/sparc.c b/gcc/config/sparc/sparc.c index af67a46eaf7..baba1d98057 100644 --- a/gcc/config/sparc/sparc.c +++ b/gcc/config/sparc/sparc.c @@ -417,6 +417,7 @@ static int sparc_arg_partial_bytes (CUMULATIVE_ARGS *, static void sparc_dwarf_handle_frame_unspec (const char *, rtx, int); static void sparc_output_dwarf_dtprel (FILE *, int, rtx) ATTRIBUTE_UNUSED; static void sparc_file_end (void); +static bool sparc_frame_pointer_required (void); #ifdef TARGET_ALTERNATE_LONG_DOUBLE_MANGLING static const char *sparc_mangle_type (const_tree); #endif @@ -591,6 +592,9 @@ static bool fpu_option_set = false; #undef TARGET_ASM_FILE_END #define TARGET_ASM_FILE_END sparc_file_end +#undef TARGET_FRAME_POINTER_REQUIRED +#define TARGET_FRAME_POINTER_REQUIRED sparc_frame_pointer_required + #ifdef TARGET_ALTERNATE_LONG_DOUBLE_MANGLING #undef TARGET_MANGLE_TYPE #define TARGET_MANGLE_TYPE sparc_mangle_type @@ -9137,4 +9141,24 @@ sparc_expand_compare_and_swap_12 (rtx result, rtx mem, rtx oldval, rtx newval) emit_move_insn (result, gen_lowpart (GET_MODE (result), res)); } +/* Implement TARGET_FRAME_POINTER_REQUIRED. */ + +bool +sparc_frame_pointer_required (void) +{ + return !(leaf_function_p () && only_leaf_regs_used ()); +} + +/* The way this is structured, we can't eliminate SFP in favor of SP + if the frame pointer is required: we want to use the SFP->HFP elimination + in that case. But the test in update_eliminables doesn't know we are + assuming below that we only do the former elimination. */ + +bool +sparc_can_eliminate (const int from ATTRIBUTE_UNUSED, const int to) +{ + return (to == HARD_FRAME_POINTER_REGNUM + || !targetm.frame_pointer_required ()); +} + #include "gt-sparc.h" |