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| author | David Monniaux <david.monniaux@univ-grenoble-alpes.fr> | 2020-04-08 21:45:42 +0200 |
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| committer | David Monniaux <david.monniaux@univ-grenoble-alpes.fr> | 2020-04-08 21:45:42 +0200 |
| commit | 63915fbebe707cc1de7c0ed5a24148cac45a742c (patch) | |
| tree | da503cba224f14281a2ee841930b8843459cb42b /arm/CSE2deps.v | |
| parent | f78d61faf3db94ac1704ce0d11291211b5307629 (diff) | |
| parent | e326ed9f28a2ed6869f0cb356ef9a8e189cb0a47 (diff) | |
| download | compcert-kvx-63915fbebe707cc1de7c0ed5a24148cac45a742c.tar.gz compcert-kvx-63915fbebe707cc1de7c0ed5a24148cac45a742c.zip | |
Merge remote-tracking branch 'origin/mppa-work' into mppa-thread
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. |