diff options
Diffstat (limited to 'backend/Regalloc.ml')
| -rw-r--r-- | backend/Regalloc.ml | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/backend/Regalloc.ml b/backend/Regalloc.ml index b21eeb0..b736f29 100644 --- a/backend/Regalloc.ml +++ b/backend/Regalloc.ml @@ -228,7 +228,7 @@ let vset_addros vos after = let live_before instr after = match instr with | Xmove(src, dst) | Xspill(src, dst) | Xreload(src, dst) -> - if VSet.mem dst after + if VSet.mem dst after || is_stack_reg src then VSet.add src (VSet.remove dst after) else after | Xparmove(srcs, dsts, itmp, ftmp) -> @@ -302,7 +302,7 @@ let rec dce_parmove srcs dsts after = | [], [] -> [], [] | src1 :: srcs, dst1 :: dsts -> let (srcs', dsts') = dce_parmove srcs dsts after in - if VSet.mem dst1 after + if VSet.mem dst1 after || is_stack_reg src1 then (src1 :: srcs', dst1 :: dsts') else (srcs', dsts') | _, _ -> assert false @@ -310,7 +310,7 @@ let rec dce_parmove srcs dsts after = let dce_instr instr after k = match instr with | Xmove(src, dst) -> - if VSet.mem dst after + if VSet.mem dst after || is_stack_reg src then instr :: k else k | Xparmove(srcs, dsts, itmp, ftmp) -> |