diff options
Diffstat (limited to 'gcc/config/rs6000/rs6000.c')
| -rw-r--r-- | gcc/config/rs6000/rs6000.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c index c963c64..a7b8f40 100644 --- a/gcc/config/rs6000/rs6000.c +++ b/gcc/config/rs6000/rs6000.c @@ -623,6 +623,7 @@ static section *rs6000_elf_select_rtx_section (enum machine_mode, rtx, static void rs6000_elf_encode_section_info (tree, rtx, int) ATTRIBUTE_UNUSED; #endif +static bool rs6000_use_blocks_for_constant_p (enum machine_mode, rtx); #if TARGET_XCOFF static void rs6000_xcoff_asm_globalize_label (FILE *, const char *); static void rs6000_xcoff_asm_init_sections (void); @@ -1021,6 +1022,20 @@ static const char alt_reg_names[][8] = #define TARGET_ASM_OUTPUT_DWARF_DTPREL rs6000_output_dwarf_dtprel #endif +/* Use a 32-bit anchor range. This leads to sequences like: + + addis tmp,anchor,high + add dest,tmp,low + + where tmp itself acts as an anchor, and can be shared between + accesses to the same 64k page. */ +#undef TARGET_MIN_ANCHOR_OFFSET +#define TARGET_MIN_ANCHOR_OFFSET -0x7fffffff - 1 +#undef TARGET_MAX_ANCHOR_OFFSET +#define TARGET_MAX_ANCHOR_OFFSET 0x7fffffff +#undef TARGET_USE_BLOCKS_FOR_CONSTANT_P +#define TARGET_USE_BLOCKS_FOR_CONSTANT_P rs6000_use_blocks_for_constant_p + struct gcc_target targetm = TARGET_INITIALIZER; @@ -17648,7 +17663,14 @@ rs6000_elf_in_small_data_p (tree decl) } #endif /* USING_ELFOS_H */ + +/* Implement TARGET_USE_BLOCKS_FOR_CONSTANT_P. */ +static bool +rs6000_use_blocks_for_constant_p (enum machine_mode mode, rtx x) +{ + return !ASM_OUTPUT_SPECIAL_POOL_ENTRY_P (x, mode); +} /* Return a REG that occurs in ADDR with coefficient 1. ADDR can be effectively incremented by incrementing REG. |