diff options
Diffstat (limited to 'gcc/config/cris/cris.c')
| -rw-r--r-- | gcc/config/cris/cris.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/gcc/config/cris/cris.c b/gcc/config/cris/cris.c index b57881a..0180638 100644 --- a/gcc/config/cris/cris.c +++ b/gcc/config/cris/cris.c @@ -163,6 +163,7 @@ static rtx cris_function_value(const_tree, const_tree, bool); static rtx cris_libcall_value (machine_mode, const_rtx); static bool cris_function_value_regno_p (const unsigned int); static void cris_file_end (void); +static bool cris_hard_regno_mode_ok (unsigned int, machine_mode); /* This is the parsed result of the "-max-stack-stackframe=" option. If it (still) is zero, then there was no such option given. */ @@ -280,6 +281,9 @@ int cris_cpu_version = CRIS_DEFAULT_CPU_VERSION; #undef TARGET_FUNCTION_VALUE_REGNO_P #define TARGET_FUNCTION_VALUE_REGNO_P cris_function_value_regno_p +#undef TARGET_HARD_REGNO_MODE_OK +#define TARGET_HARD_REGNO_MODE_OK cris_hard_regno_mode_ok + struct gcc_target targetm = TARGET_INITIALIZER; /* Helper for cris_load_multiple_op and cris_ret_movem_op. */ @@ -4292,6 +4296,18 @@ cris_trampoline_init (rtx m_tramp, tree fndecl, rtx chain_value) sake of a trampoline. */ } +/* Implement TARGET_HARD_REGNO_MODE_OK. + + CRIS permits all registers to hold all modes. Well, except for the + condition-code register. And we can't hold larger-than-register size + modes in the last special register that can hold a full 32 bits. */ +static bool +cris_hard_regno_mode_ok (unsigned int regno, machine_mode mode) +{ + return ((mode == CCmode || regno != CRIS_CC0_REGNUM) + && (GET_MODE_SIZE (mode) <= UNITS_PER_WORD + || (regno != CRIS_MOF_REGNUM && regno != CRIS_ACR_REGNUM))); +} #if 0 /* Various small functions to replace macros. Only called from a |