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| author | David Monniaux <david.monniaux@univ-grenoble-alpes.fr> | 2020-03-03 16:57:52 +0100 |
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| committer | David Monniaux <david.monniaux@univ-grenoble-alpes.fr> | 2020-03-03 16:57:52 +0100 |
| commit | fe0862b9bb1c9deeb1ea1393889c294fc2cc2ebe (patch) | |
| tree | 50a6ecbb87438cfc21461b4f5066edcf28f8b14e /arm/CSE2deps.v | |
| parent | 1ab7b51c30e1b10ac45b0bd64cefdc01da0f7f68 (diff) | |
| parent | 3b640f041be480b82f1b3a1f695ed8a57193bf28 (diff) | |
| download | compcert-kvx-fe0862b9bb1c9deeb1ea1393889c294fc2cc2ebe.tar.gz compcert-kvx-fe0862b9bb1c9deeb1ea1393889c294fc2cc2ebe.zip | |
fixed CSE2 for mppa_k1c
Merge branch 'dm-cse2-naive' of https://github.com/monniaux/CompCert into mppa-cse2
Diffstat (limited to 'arm/CSE2deps.v')
| -rw-r--r-- | arm/CSE2deps.v | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/arm/CSE2deps.v b/arm/CSE2deps.v new file mode 100644 index 00000000..9db51bbb --- /dev/null +++ b/arm/CSE2deps.v @@ -0,0 +1,20 @@ +Require Import BoolEqual Coqlib. +Require Import AST Integers Floats. +Require Import Values Memory Globalenvs Events. +Require Import Op. + + +Definition can_swap_accesses_ofs ofsr chunkr ofsw chunkw := + (0 <=? ofsw) && (ofsw <=? (Ptrofs.modulus - largest_size_chunk)) + && (0 <=? ofsr) && (ofsr <=? (Ptrofs.modulus - largest_size_chunk)) + && ((ofsw + size_chunk chunkw <=? ofsr) || + (ofsr + size_chunk chunkr <=? ofsw)). + +Definition may_overlap chunk addr args chunk' addr' args' := + match addr, addr', args, args' with + | (Aindexed ofs), (Aindexed ofs'), + (base :: nil), (base' :: nil) => + if peq base base' + then negb (can_swap_accesses_ofs (Int.unsigned ofs') chunk' (Int.unsigned ofs) chunk) + else true | _, _, _, _ => true + end. |