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| author | Kito Cheng <kito.cheng@gmail.com> | 2018-05-20 07:31:55 +0000 |
|---|---|---|
| committer | Chung-Ju Wu <jasonwucj@gcc.gnu.org> | 2018-05-20 07:31:55 +0000 |
| commit | 69e7672a3bc8b1b40b92277437947f2778c51b96 (patch) | |
| tree | 0819b082dfa77dedb105b78aec3153941fad6b4c /gcc | |
| parent | 19c93809c274015f25db9856ffdfb40df3a828ab (diff) | |
| download | gcc-69e7672a3bc8b1b40b92277437947f2778c51b96.zip gcc-69e7672a3bc8b1b40b92277437947f2778c51b96.tar.gz gcc-69e7672a3bc8b1b40b92277437947f2778c51b96.tar.bz2 | |
[NDS32] Adjust register move cost for graywolf cpu.
gcc/
* config/nds32/nds32.c (nds32_register_move_cost): Take garywolf cpu
into consideration.
Co-Authored-By: Chung-Ju Wu <jasonwucj@gmail.com>
From-SVN: r260412
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/config/nds32/nds32.c | 24 |
2 files changed, 28 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 63e5c66..d76ff7d 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,6 +1,12 @@ 2018-05-20 Kito Cheng <kito.cheng@gmail.com> Chung-Ju Wu <jasonwucj@gmail.com> + * config/nds32/nds32.c (nds32_register_move_cost): Take garywolf cpu + into consideration. + +2018-05-20 Kito Cheng <kito.cheng@gmail.com> + Chung-Ju Wu <jasonwucj@gmail.com> + * config/nds32/nds32-cost.c (rtx_cost_model_t): New structure. (insn_size_16bit, insn_size_32bit): New variables for cost evaluation. (nds32_rtx_costs_impl): Simplify. diff --git a/gcc/config/nds32/nds32.c b/gcc/config/nds32/nds32.c index ac67ba4..649e6f4 100644 --- a/gcc/config/nds32/nds32.c +++ b/gcc/config/nds32/nds32.c @@ -3005,13 +3005,33 @@ nds32_canonicalize_comparison (int *code, /* Describing Relative Costs of Operations. */ static int -nds32_register_move_cost (machine_mode mode ATTRIBUTE_UNUSED, +nds32_register_move_cost (machine_mode mode, reg_class_t from, reg_class_t to) { + /* In garywolf cpu, FPR to GPR is chaper than other cpu. */ + if (TARGET_PIPELINE_GRAYWOLF) + { + if (GET_MODE_SIZE (mode) == 8) + { + /* DPR to GPR. */ + if (from == FP_REGS && to != FP_REGS) + return 3; + /* GPR to DPR. */ + if (from != FP_REGS && to == FP_REGS) + return 2; + } + else + { + if ((from == FP_REGS && to != FP_REGS) + || (from != FP_REGS && to == FP_REGS)) + return 2; + } + } + if ((from == FP_REGS && to != FP_REGS) || (from != FP_REGS && to == FP_REGS)) - return 9; + return 3; else if (from == HIGH_REGS || to == HIGH_REGS) return optimize_size ? 6 : 2; else |