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| author | Shiva Chen <shiva0217@gmail.com> | 2018-04-22 08:42:18 +0000 |
|---|---|---|
| committer | Chung-Ju Wu <jasonwucj@gcc.gnu.org> | 2018-04-22 08:42:18 +0000 |
| commit | 2f1bb3ca9170534db2cf2df6cf4ff61a4dd6145b (patch) | |
| tree | 91e52c3020c6f09fd36314fbb51e8aad4b153d71 | |
| parent | 361292be13045d2ed2812b26bb6c634b60e155df (diff) | |
| download | gcc-2f1bb3ca9170534db2cf2df6cf4ff61a4dd6145b.zip gcc-2f1bb3ca9170534db2cf2df6cf4ff61a4dd6145b.tar.gz gcc-2f1bb3ca9170534db2cf2df6cf4ff61a4dd6145b.tar.bz2 | |
[NDS32] Refine CASE_VECTOR_SHORTEN_MODE to function.
gcc/
* config/nds32/nds32-protos.h (nds32_case_vector_shorten_mode):
Declare.
* config/nds32/nds32.c (nds32_case_vector_shorten_mode): New function.
* config/nds32/nds32.h (CASE_VECTOR_SHORTEN_MODE): Modify.
Co-Authored-By: Chung-Ju Wu <jasonwucj@gmail.com>
From-SVN: r259550
| -rw-r--r-- | gcc/ChangeLog | 8 | ||||
| -rw-r--r-- | gcc/config/nds32/nds32-protos.h | 1 | ||||
| -rw-r--r-- | gcc/config/nds32/nds32.c | 17 | ||||
| -rw-r--r-- | gcc/config/nds32/nds32.h | 4 |
4 files changed, 27 insertions, 3 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 43c1b3a..b32490e 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,11 @@ +2018-04-22 Shiva Chen <shiva0217@gmail.com> + Chung-Ju Wu <jasonwucj@gmail.com> + + * config/nds32/nds32-protos.h (nds32_case_vector_shorten_mode): + Declare. + * config/nds32/nds32.c (nds32_case_vector_shorten_mode): New function. + * config/nds32/nds32.h (CASE_VECTOR_SHORTEN_MODE): Modify. + 2018-04-22 Chung-Ju Wu <jasonwucj@gmail.com> * config/nds32/nds32.c (nds32_compute_stack_frame): Fix wrong value. diff --git a/gcc/config/nds32/nds32-protos.h b/gcc/config/nds32/nds32-protos.h index 2dce97e..2d68f13 100644 --- a/gcc/config/nds32/nds32-protos.h +++ b/gcc/config/nds32/nds32-protos.h @@ -219,6 +219,7 @@ extern void nds32_expand_constant (machine_mode, /* Auxiliary functions to check using return with null epilogue. */ extern int nds32_can_use_return_insn (void); +extern scalar_int_mode nds32_case_vector_shorten_mode (int, int, rtx); /* Auxiliary functions to decide output alignment or not. */ diff --git a/gcc/config/nds32/nds32.c b/gcc/config/nds32/nds32.c index 0c4e917..a33567e 100644 --- a/gcc/config/nds32/nds32.c +++ b/gcc/config/nds32/nds32.c @@ -4768,6 +4768,23 @@ nds32_can_use_return_insn (void) return (cfun->machine->naked_p && (cfun->machine->va_args_size == 0)); } +scalar_int_mode +nds32_case_vector_shorten_mode (int min_offset, int max_offset, + rtx body ATTRIBUTE_UNUSED) +{ + if (min_offset < 0 || max_offset >= 0x2000) + return SImode; + else + { + /* The jump table maybe need to 2 byte alignment, + so reserved 1 byte for check max_offset. */ + if (max_offset >= 0xff) + return HImode; + else + return QImode; + } +} + /* ------------------------------------------------------------------------ */ /* Function to test 333-form for load/store instructions. diff --git a/gcc/config/nds32/nds32.h b/gcc/config/nds32/nds32.h index 6c2f1f8..c5d1e27 100644 --- a/gcc/config/nds32/nds32.h +++ b/gcc/config/nds32/nds32.h @@ -1331,9 +1331,7 @@ enum reg_class /* Return the preferred mode for and addr_diff_vec when the mininum and maximum offset are known. */ #define CASE_VECTOR_SHORTEN_MODE(min_offset, max_offset, body) \ - ((min_offset < 0 || max_offset >= 0x2000 ) ? SImode \ - : (max_offset >= 100) ? HImode \ - : QImode) + nds32_case_vector_shorten_mode (min_offset, max_offset, body) /* Generate pc relative jump table when -fpic or -Os. */ #define CASE_VECTOR_PC_RELATIVE (flag_pic || optimize_size) |