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| author | Yueh-Ting (eop) Chen <yueh.ting.chen@gmail.com> | 2021-12-08 03:18:45 +0800 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2021-12-07 11:18:45 -0800 |
| commit | 8f16ed328f13eb00fdae921b2e6adf8d6e528f0b (patch) | |
| tree | 9b12823d9babd725c43b58c48af4f6260e6181b1 /riscv/decode.h | |
| parent | 522d8a20b7bf4ab5cad0ceaa3b45155fb6d08f76 (diff) | |
| download | spike-8f16ed328f13eb00fdae921b2e6adf8d6e528f0b.zip spike-8f16ed328f13eb00fdae921b2e6adf8d6e528f0b.tar.gz spike-8f16ed328f13eb00fdae921b2e6adf8d6e528f0b.tar.bz2 | |
Simplify vadc and vsbc (#876)
Diffstat (limited to 'riscv/decode.h')
| -rw-r--r-- | riscv/decode.h | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/riscv/decode.h b/riscv/decode.h index 313d9f0..c21808f 100644 --- a/riscv/decode.h +++ b/riscv/decode.h @@ -644,6 +644,12 @@ static inline bool is_aligned(const unsigned val, const unsigned pos) vd = (vd & ~mmask) | (((res) << mpos) & mmask); \ } \ P.VU.vstart->write(0); +#define VI_LOOP_WITH_CARRY_BASE \ + VI_GENERAL_LOOP_BASE \ + VI_MASK_VARS \ + auto &v0 = P.VU.elt<uint64_t>(0, midx); \ + const uint128_t op_mask = (UINT64_MAX >> (64 - sew)); \ + uint64_t carry = (v0 >> mpos) & 0x1; #define VI_LOOP_CMP_BASE \ require(P.VU.vsew >= e8 && P.VU.vsew <= e64); \ @@ -1452,10 +1458,9 @@ static inline bool is_aligned(const unsigned val, const unsigned pos) VI_LOOP_CARRY_END #define VI_VV_LOOP_WITH_CARRY(BODY) \ - require(insn.rd() != 0); \ + require_vm; \ VI_CHECK_SSS(true); \ - VI_GENERAL_LOOP_BASE \ - VI_MASK_VARS \ + VI_LOOP_WITH_CARRY_BASE \ if (sew == e8){ \ VV_WITH_CARRY_PARAMS(e8) \ BODY; \ @@ -1472,10 +1477,9 @@ static inline bool is_aligned(const unsigned val, const unsigned pos) VI_LOOP_END #define VI_XI_LOOP_WITH_CARRY(BODY) \ - require(insn.rd() != 0); \ + require_vm; \ VI_CHECK_SSS(false); \ - VI_GENERAL_LOOP_BASE \ - VI_MASK_VARS \ + VI_LOOP_WITH_CARRY_BASE \ if (sew == e8){ \ XI_WITH_CARRY_PARAMS(e8) \ BODY; \ |