diff options
Diffstat (limited to 'gcc/config/sh/sh.c')
| -rw-r--r-- | gcc/config/sh/sh.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/gcc/config/sh/sh.c b/gcc/config/sh/sh.c index 9d8bb536c4f..7b87c962140 100644 --- a/gcc/config/sh/sh.c +++ b/gcc/config/sh/sh.c @@ -298,6 +298,7 @@ static void sh_encode_section_info (tree, rtx, int); static int sh2a_function_vector_p (tree); static void sh_trampoline_init (rtx, tree, rtx); static rtx sh_trampoline_adjust_address (rtx); +static void sh_conditional_register_usage (void); static const struct attribute_spec sh_attribute_table[] = { @@ -588,6 +589,9 @@ static const struct default_options sh_option_optimization_table[] = #undef TARGET_SECONDARY_RELOAD #define TARGET_SECONDARY_RELOAD sh_secondary_reload +#undef TARGET_CONDITIONAL_REGISTER_USAGE +#define TARGET_CONDITIONAL_REGISTER_USAGE sh_conditional_register_usage + #undef TARGET_LEGITIMATE_ADDRESS_P #define TARGET_LEGITIMATE_ADDRESS_P sh_legitimate_address_p @@ -12415,6 +12419,54 @@ sh_secondary_reload (bool in_p, rtx x, reg_class_t rclass_i, return NO_REGS; } +static void +sh_conditional_register_usage (void) +{ + int regno; + for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno ++) + if (! VALID_REGISTER_P (regno)) + fixed_regs[regno] = call_used_regs[regno] = 1; + /* R8 and R9 are call-clobbered on SH5, but not on earlier SH ABIs. */ + if (TARGET_SH5) + { + call_used_regs[FIRST_GENERAL_REG + 8] + = call_used_regs[FIRST_GENERAL_REG + 9] = 1; + call_really_used_regs[FIRST_GENERAL_REG + 8] + = call_really_used_regs[FIRST_GENERAL_REG + 9] = 1; + } + if (TARGET_SHMEDIA) + { + regno_reg_class[FIRST_GENERAL_REG] = GENERAL_REGS; + CLEAR_HARD_REG_SET (reg_class_contents[FP0_REGS]); + regno_reg_class[FIRST_FP_REG] = FP_REGS; + } + if (flag_pic) + { + fixed_regs[PIC_OFFSET_TABLE_REGNUM] = 1; + call_used_regs[PIC_OFFSET_TABLE_REGNUM] = 1; + } + /* Renesas saves and restores mac registers on call. */ + if (TARGET_HITACHI && ! TARGET_NOMACSAVE) + { + call_really_used_regs[MACH_REG] = 0; + call_really_used_regs[MACL_REG] = 0; + } + for (regno = FIRST_FP_REG + (TARGET_LITTLE_ENDIAN != 0); + regno <= LAST_FP_REG; regno += 2) + SET_HARD_REG_BIT (reg_class_contents[DF_HI_REGS], regno); + if (TARGET_SHMEDIA) + { + for (regno = FIRST_TARGET_REG; regno <= LAST_TARGET_REG; regno ++) + if (! fixed_regs[regno] && call_really_used_regs[regno]) + SET_HARD_REG_BIT (reg_class_contents[SIBCALL_REGS], regno); + } + else + for (regno = FIRST_GENERAL_REG; regno <= LAST_GENERAL_REG; regno++) + if (! fixed_regs[regno] && call_really_used_regs[regno]) + SET_HARD_REG_BIT (reg_class_contents[SIBCALL_REGS], regno); +} + + enum sh_divide_strategy_e sh_div_strategy = SH_DIV_STRATEGY_DEFAULT; #include "gt-sh.h" |