diff options
Diffstat (limited to 'mppa_k1c/Peephole.v')
| -rw-r--r-- | mppa_k1c/Peephole.v | 33 |
1 files changed, 19 insertions, 14 deletions
diff --git a/mppa_k1c/Peephole.v b/mppa_k1c/Peephole.v index 9fb0d898..81f0dc82 100644 --- a/mppa_k1c/Peephole.v +++ b/mppa_k1c/Peephole.v @@ -50,6 +50,8 @@ Definition gpreg_o_search r0 r1 r2 r3 : option gpreg_o := Parameter print_found_store: forall A, Z -> A -> A. +Definition coalesce_octuples := true. + Fixpoint coalesce_mem (insns : list basic) : list basic := match insns with | nil => nil @@ -65,21 +67,24 @@ Fixpoint coalesce_mem (insns : list basic) : list basic := let zofs1 := Ptrofs.signed ofs1 in if (zofs1 =? zofs0 + 8) && (ireg_eq ra0 ra1) then - match t1 with - | (PStoreRRO Psd_a rs2 ra2 ofs2) :: - (PStoreRRO Psd_a rs3 ra3 ofs3) :: t3 => - match gpreg_o_search rs0 rs1 rs2 rs3 with - | Some octuple => - let zofs2 := Ptrofs.signed ofs2 in - let zofs3 := Ptrofs.signed ofs3 in - if (zofs2 =? zofs0 + 16) && (ireg_eq ra0 ra2) && - (zofs3 =? zofs0 + 24) && (ireg_eq ra0 ra3) - then (PStore (PStoreORRO octuple ra0 ofs0)) :: Pnop :: Pnop :: Pnop :: (coalesce_mem t3) - else (PStore (PStoreQRRO rs0rs1 ra0 ofs0)) :: Pnop :: (coalesce_mem t1) - | None => (PStore (PStoreQRRO rs0rs1 ra0 ofs0)) :: Pnop :: (coalesce_mem t1) + if coalesce_octuples + then + match t1 with + | (PStoreRRO Psd_a rs2 ra2 ofs2) :: + (PStoreRRO Psd_a rs3 ra3 ofs3) :: t3 => + match gpreg_o_search rs0 rs1 rs2 rs3 with + | Some octuple => + let zofs2 := Ptrofs.signed ofs2 in + let zofs3 := Ptrofs.signed ofs3 in + if (zofs2 =? zofs0 + 16) && (ireg_eq ra0 ra2) && + (zofs3 =? zofs0 + 24) && (ireg_eq ra0 ra3) + then (PStore (PStoreORRO octuple ra0 ofs0)) :: Pnop :: Pnop :: Pnop :: (coalesce_mem t3) + else (PStore (PStoreQRRO rs0rs1 ra0 ofs0)) :: Pnop :: (coalesce_mem t1) + | None => (PStore (PStoreQRRO rs0rs1 ra0 ofs0)) :: Pnop :: (coalesce_mem t1) + end + | _ => (PStore (PStoreQRRO rs0rs1 ra0 ofs0)) :: Pnop :: (coalesce_mem t1) end - | _ => (PStore (PStoreQRRO rs0rs1 ra0 ofs0)) :: Pnop :: (coalesce_mem t1) - end + else (PStore (PStoreQRRO rs0rs1 ra0 ofs0)) :: Pnop :: (coalesce_mem t1) else h0 :: (coalesce_mem t0) | None => h0 :: (coalesce_mem t0) end |