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| author | David Monniaux <david.monniaux@univ-grenoble-alpes.fr> | 2020-04-23 11:43:06 +0200 |
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| committer | David Monniaux <david.monniaux@univ-grenoble-alpes.fr> | 2020-04-23 11:43:06 +0200 |
| commit | 69447b8515c0bd123c6aa72c5545cf9beda79ec4 (patch) | |
| tree | 80871cb7091ef1a68e6634fc0cffc5c6fb69c024 /backend/CSE3analysis.v | |
| parent | dc43cc3371f7837cff5b8d1fd536aba54e99232f (diff) | |
| download | compcert-kvx-69447b8515c0bd123c6aa72c5545cf9beda79ec4.tar.gz compcert-kvx-69447b8515c0bd123c6aa72c5545cf9beda79ec4.zip | |
fix in CSE3 move propagation
Diffstat (limited to 'backend/CSE3analysis.v')
| -rw-r--r-- | backend/CSE3analysis.v | 19 |
1 files changed, 14 insertions, 5 deletions
diff --git a/backend/CSE3analysis.v b/backend/CSE3analysis.v index b495371d..91064a5d 100644 --- a/backend/CSE3analysis.v +++ b/backend/CSE3analysis.v @@ -274,11 +274,20 @@ Section OPERATIONS. Definition oper (dst : reg) (op: sym_op) (args : list reg) (rel : RELATION.t) : RELATION.t := - match rhs_find op (forward_move_l rel args) rel with - | Some r => RELATION.glb (move r dst rel) - (oper1 dst op args rel) - | None => oper1 dst op args rel - end. + if is_smove op + then + match args with + | src::nil => + move (forward_move rel src) dst rel + | _ => kill_reg dst rel + end + else + let args' := forward_move_l rel args in + match rhs_find op args' rel with + | Some r => (* FIXME RELATION.glb ( *) move r dst rel (* ) + (oper1 dst op args' rel) *) + | None => oper1 dst op args' rel + end. Definition clever_kill_store (chunk : memory_chunk) (addr: addressing) (args : list reg) |