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author | xleroy <xleroy@fca1b0fc-160b-0410-b1d3-a4f43f01ea2e> | 2011-04-09 16:59:13 +0000 |
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committer | xleroy <xleroy@fca1b0fc-160b-0410-b1d3-a4f43f01ea2e> | 2011-04-09 16:59:13 +0000 |
commit | abe2bb5c40260a31ce5ee27b841bcbd647ff8b88 (patch) | |
tree | ae109a136508da283a9e2be5f039c5f9cca4f95c /backend/Conventions.v | |
parent | ffd6080f9e1e742c73ac38354b31c6fc4e3963ba (diff) | |
download | compcert-abe2bb5c40260a31ce5ee27b841bcbd647ff8b88.tar.gz compcert-abe2bb5c40260a31ce5ee27b841bcbd647ff8b88.zip |
Merge of branch "unsigned-offsets":
- In pointer values "Vptr b ofs", interpret "ofs" as an unsigned int.
(Fixes issue with wrong comparison of pointers across 0x8000_0000)
- Revised Stacking pass to not use negative SP offsets.
- Add pointer validity checks to Cminor ... Mach
to support the use of memory injections in Stacking.
- Cleaned up Stacklayout modules.
- IA32: improved code generation for Mgetparam.
- ARM: improved code generation for op-immediate instructions.
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1632 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
Diffstat (limited to 'backend/Conventions.v')
-rw-r--r-- | backend/Conventions.v | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/backend/Conventions.v b/backend/Conventions.v index 9778f6ab..c11bf47c 100644 --- a/backend/Conventions.v +++ b/backend/Conventions.v @@ -191,6 +191,22 @@ Proof. intros; simpl. tauto. Qed. +Lemma incoming_slot_in_parameters: + forall ofs ty sg, + In (S (Incoming ofs ty)) (loc_parameters sg) -> + In (S (Outgoing ofs ty)) (loc_arguments sg). +Proof. + intros. + unfold loc_parameters in H. + change (S (Incoming ofs ty)) with (parameter_of_argument (S (Outgoing ofs ty))) in H. + exploit list_in_map_inv. eexact H. intros [x [A B]]. simpl in A. + exploit loc_arguments_acceptable; eauto. unfold loc_argument_acceptable; intros. + destruct x; simpl in A; try discriminate. + destruct s; try contradiction. + inv A. auto. +Qed. + + (** * Tail calls *) (** A tail-call is possible for a signature if the corresponding |