diff options
Diffstat (limited to 'gcc/config/mips/mips.h')
| -rw-r--r-- | gcc/config/mips/mips.h | 21 |
1 files changed, 16 insertions, 5 deletions
diff --git a/gcc/config/mips/mips.h b/gcc/config/mips/mips.h index 073c82e..9ff36b3 100644 --- a/gcc/config/mips/mips.h +++ b/gcc/config/mips/mips.h @@ -2330,13 +2330,18 @@ typedef struct mips_args { /* True if we're generating a form of MIPS16 code in which jump tables are stored in the text section and encoded as 16-bit PC-relative offsets. This is only possible when general text loads are allowed, - since the table access itself will be an "lh" instruction. */ -/* ??? 16-bit offsets can overflow in large functions. */ + since the table access itself will be an "lh" instruction. If the + PC-relative offsets grow too large, 32-bit offsets are used instead. */ #define TARGET_MIPS16_SHORT_JUMP_TABLES TARGET_MIPS16_TEXT_LOADS #define JUMP_TABLES_IN_TEXT_SECTION TARGET_MIPS16_SHORT_JUMP_TABLES -#define CASE_VECTOR_MODE (TARGET_MIPS16_SHORT_JUMP_TABLES ? HImode : ptr_mode) +#define CASE_VECTOR_MODE SImode + +/* Only use short offsets if their range will not overflow. */ +#define CASE_VECTOR_SHORTEN_MODE(MIN, MAX, BODY) \ + (TARGET_MIPS16_SHORT_JUMP_TABLES && ((MIN) >= -32768 && (MAX) < 32768) \ + ? HImode : SImode) #define CASE_VECTOR_PC_RELATIVE TARGET_MIPS16_SHORT_JUMP_TABLES @@ -2636,8 +2641,14 @@ while (0) #define ASM_OUTPUT_ADDR_DIFF_ELT(STREAM, BODY, VALUE, REL) \ do { \ if (TARGET_MIPS16_SHORT_JUMP_TABLES) \ - fprintf (STREAM, "\t.half\t%sL%d-%sL%d\n", \ - LOCAL_LABEL_PREFIX, VALUE, LOCAL_LABEL_PREFIX, REL); \ + { \ + if (GET_MODE (BODY) == HImode) \ + fprintf (STREAM, "\t.half\t%sL%d-%sL%d\n", \ + LOCAL_LABEL_PREFIX, VALUE, LOCAL_LABEL_PREFIX, REL); \ + else \ + fprintf (STREAM, "\t.word\t%sL%d-%sL%d\n", \ + LOCAL_LABEL_PREFIX, VALUE, LOCAL_LABEL_PREFIX, REL); \ + } \ else if (TARGET_GPWORD) \ fprintf (STREAM, "\t%s\t%sL%d\n", \ ptr_mode == DImode ? ".gpdword" : ".gpword", \ |