diff options
Diffstat (limited to 'gcc/config/mips/mips.c')
| -rw-r--r-- | gcc/config/mips/mips.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/gcc/config/mips/mips.c b/gcc/config/mips/mips.c index 5a655f6..fea14a7 100644 --- a/gcc/config/mips/mips.c +++ b/gcc/config/mips/mips.c @@ -56,6 +56,7 @@ Boston, MA 02110-1301, USA. */ #include "cfglayout.h" #include "sched-int.h" #include "tree-gimple.h" +#include "bitmap.h" /* True if X is an unspec wrapper around a SYMBOL_REF or LABEL_REF. */ #define UNSPEC_ADDRESS_P(X) \ @@ -407,6 +408,7 @@ static rtx mips_expand_builtin_compare (enum mips_builtin_type, rtx, tree); static rtx mips_expand_builtin_bposge (enum mips_builtin_type, rtx); static void mips_encode_section_info (tree, rtx, int); +static void mips_extra_live_on_entry (bitmap); /* Structure to be filled in by compute_frame_size with register save masks, and offsets for the current function. */ @@ -1160,6 +1162,12 @@ static struct mips_rtx_cost_data const mips_rtx_cost_data[PROCESSOR_MAX] = #undef TARGET_ATTRIBUTE_TABLE #define TARGET_ATTRIBUTE_TABLE mips_attribute_table +#undef TARGET_EXTRA_LIVE_ON_ENTRY +/* With -mabicalls (which is the default on GNU/Linux), + PIC_FUNCTION_ADDR_REGNUM is live on function entry and is to + initialize $28, which is PIC_OFFSET_TABLE_REGNUM. */ +#define TARGET_EXTRA_LIVE_ON_ENTRY mips_extra_live_on_entry + struct gcc_target targetm = TARGET_INITIALIZER; /* Classify symbol X, which must be a SYMBOL_REF or a LABEL_REF. */ @@ -10764,5 +10772,16 @@ mips_encode_section_info (tree decl, rtx rtl, int first) SYMBOL_REF_FLAGS (symbol) |= SYMBOL_FLAG_LONG_CALL; } } + +/* Implement TARGET_EXTRA_LIVE_ON_ENTRY. TARGET_ABICALLS makes + PIC_FUNCTION_ADDR_REGNUM live on entry to a function. */ + +static void +mips_extra_live_on_entry (bitmap regs) +{ + if (!TARGET_ABICALLS) + bitmap_set_bit (regs, PIC_FUNCTION_ADDR_REGNUM); +} + #include "gt-mips.h" |