diff options
Diffstat (limited to 'gcc/targhooks.c')
| -rw-r--r-- | gcc/targhooks.c | 120 |
1 files changed, 118 insertions, 2 deletions
diff --git a/gcc/targhooks.c b/gcc/targhooks.c index dd52da98638..dfc470c869e 100644 --- a/gcc/targhooks.c +++ b/gcc/targhooks.c @@ -603,14 +603,19 @@ default_function_value (const_tree ret_type ATTRIBUTE_UNUSED, #ifdef FUNCTION_VALUE return FUNCTION_VALUE (ret_type, fn_decl_or_type); #else - return NULL_RTX; + gcc_unreachable (); #endif } rtx -default_libcall_value (enum machine_mode mode, rtx fun ATTRIBUTE_UNUSED) +default_libcall_value (enum machine_mode mode ATTRIBUTE_UNUSED, + const_rtx fun ATTRIBUTE_UNUSED) { +#ifdef LIBCALL_VALUE return LIBCALL_VALUE (mode); +#else + gcc_unreachable (); +#endif } rtx @@ -826,6 +831,107 @@ default_builtin_support_vector_misalignment (enum machine_mode mode, return false; } +/* Determine whether or not a pointer mode is valid. Assume defaults + of ptr_mode or Pmode - can be overridden. */ +bool +default_valid_pointer_mode (enum machine_mode mode) +{ + return (mode == ptr_mode || mode == Pmode); +} + +/* Return the mode for a pointer to a given ADDRSPACE, defaulting to ptr_mode + for the generic address space only. */ + +enum machine_mode +default_addr_space_pointer_mode (addr_space_t addrspace ATTRIBUTE_UNUSED) +{ + gcc_assert (ADDR_SPACE_GENERIC_P (addrspace)); + return ptr_mode; +} + +/* Return the mode for an address in a given ADDRSPACE, defaulting to Pmode + for the generic address space only. */ + +enum machine_mode +default_addr_space_address_mode (addr_space_t addrspace ATTRIBUTE_UNUSED) +{ + gcc_assert (ADDR_SPACE_GENERIC_P (addrspace)); + return Pmode; +} + +/* Named address space version of valid_pointer_mode. */ + +bool +default_addr_space_valid_pointer_mode (enum machine_mode mode, addr_space_t as) +{ + if (!ADDR_SPACE_GENERIC_P (as)) + return (mode == targetm.addr_space.pointer_mode (as) + || mode == targetm.addr_space.address_mode (as)); + + return targetm.valid_pointer_mode (mode); +} + +/* Some places still assume that all pointer or address modes are the + standard Pmode and ptr_mode. These optimizations become invalid if + the target actually supports multiple different modes. For now, + we disable such optimizations on such targets, using this function. */ + +bool +target_default_pointer_address_modes_p (void) +{ + if (targetm.addr_space.address_mode != default_addr_space_address_mode) + return false; + if (targetm.addr_space.pointer_mode != default_addr_space_pointer_mode) + return false; + + return true; +} + +/* Named address space version of legitimate_address_p. */ + +bool +default_addr_space_legitimate_address_p (enum machine_mode mode, rtx mem, + bool strict, addr_space_t as) +{ + if (!ADDR_SPACE_GENERIC_P (as)) + gcc_unreachable (); + + return targetm.legitimate_address_p (mode, mem, strict); +} + +/* Named address space version of LEGITIMIZE_ADDRESS. */ + +rtx +default_addr_space_legitimize_address (rtx x, rtx oldx, + enum machine_mode mode, addr_space_t as) +{ + if (!ADDR_SPACE_GENERIC_P (as)) + return x; + + return targetm.legitimize_address (x, oldx, mode); +} + +/* The default hook for determining if one named address space is a subset of + another and to return which address space to use as the common address + space. */ + +bool +default_addr_space_subset_p (addr_space_t subset, addr_space_t superset) +{ + return (subset == superset); +} + +/* The default hook for TARGET_ADDR_SPACE_CONVERT. This hook should never be + called for targets with only a generic address space. */ + +rtx +default_addr_space_convert (rtx op ATTRIBUTE_UNUSED, + tree from_type ATTRIBUTE_UNUSED, + tree to_type ATTRIBUTE_UNUSED) +{ + gcc_unreachable (); +} + bool default_hard_regno_scratch_ok (unsigned int regno ATTRIBUTE_UNUSED) { @@ -892,4 +998,14 @@ unsigned int default_case_values_threshold (void) return (HAVE_casesi ? 4 : 5); } +bool +default_have_conditional_execution (void) +{ +#ifdef HAVE_conditional_execution + return HAVE_conditional_execution; +#else + return false; +#endif +} + #include "gt-targhooks.h" |