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| author | xleroy <xleroy@fca1b0fc-160b-0410-b1d3-a4f43f01ea2e> | 2012-01-14 14:23:26 +0000 |
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| committer | xleroy <xleroy@fca1b0fc-160b-0410-b1d3-a4f43f01ea2e> | 2012-01-14 14:23:26 +0000 |
| commit | a82c9c0e4a0b8e37c9c3ea5ae99714982563606f (patch) | |
| tree | 93b9999698a4cd47ec4cb5fcdcdfd215d62f8e9e /powerpc/Asmgenproof.v | |
| parent | bb8f49c419eb8205ef541edcbe17f4d14aa99564 (diff) | |
| download | compcert-kvx-a82c9c0e4a0b8e37c9c3ea5ae99714982563606f.tar.gz compcert-kvx-a82c9c0e4a0b8e37c9c3ea5ae99714982563606f.zip | |
Merge of the nonstrict-ops branch:
- Most RTL operators now evaluate to Some Vundef instead of None
when undefined behavior occurs.
- More aggressive instruction selection.
- "Bertotization" of pattern-matchings now implemented by a proper preprocessor.
- Cast optimization moved to cfrontend/Cminorgen; removed backend/CastOptim.
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1790 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
Diffstat (limited to 'powerpc/Asmgenproof.v')
| -rw-r--r-- | powerpc/Asmgenproof.v | 24 |
1 files changed, 21 insertions, 3 deletions
diff --git a/powerpc/Asmgenproof.v b/powerpc/Asmgenproof.v index 27b2108b..e7b73854 100644 --- a/powerpc/Asmgenproof.v +++ b/powerpc/Asmgenproof.v @@ -343,12 +343,21 @@ Proof. Qed. Hint Rewrite addimm_label: labels. +Remark andimm_base_label: + forall r1 r2 n k, find_label lbl (andimm_base r1 r2 n k) = find_label lbl k. +Proof. + intros; unfold andimm_base. + case (Int.eq (high_u n) Int.zero). reflexivity. + case (Int.eq (low_u n) Int.zero). reflexivity. + autorewrite with labels. reflexivity. +Qed. +Hint Rewrite andimm_base_label: labels. + Remark andimm_label: forall r1 r2 n k, find_label lbl (andimm r1 r2 n k) = find_label lbl k. Proof. intros; unfold andimm. - case (Int.eq (high_u n) Int.zero). reflexivity. - case (Int.eq (low_u n) Int.zero). reflexivity. + case (is_rlw_mask n). reflexivity. autorewrite with labels. reflexivity. Qed. Hint Rewrite andimm_label: labels. @@ -371,6 +380,15 @@ Proof. Qed. Hint Rewrite xorimm_label: labels. +Remark rolm_label: + forall r1 r2 amount mask k, find_label lbl (rolm r1 r2 amount mask k) = find_label lbl k. +Proof. + intros; unfold rolm. + case (is_rlw_mask mask). reflexivity. + simpl. autorewrite with labels. auto. +Qed. +Hint Rewrite rolm_label: labels. + Remark loadind_label: forall base ofs ty dst k, find_label lbl (loadind base ofs ty dst k) = find_label lbl k. Proof. @@ -405,7 +423,7 @@ Proof. case (Int.eq (high_u i) Int.zero). reflexivity. autorewrite with labels; reflexivity. apply floatcomp_label. apply floatcomp_label. - apply andimm_label. apply andimm_label. + apply andimm_base_label. apply andimm_base_label. Qed. Hint Rewrite transl_cond_label: labels. |