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| author | Xavier Leroy <xavier.leroy@inria.fr> | 2017-06-15 15:11:26 +0200 |
|---|---|---|
| committer | Bernhard Schommer <bschommer@users.noreply.github.com> | 2017-07-06 15:41:51 +0200 |
| commit | dff22ef6d855973e0e0f05c7203a6bfa9a4cf01a (patch) | |
| tree | 82c09b8cff023557084d6257acdef84b1311dd35 /backend/ValueAnalysis.v | |
| parent | 92fc8a425034abc1247203a4c0d471e8b6d0e941 (diff) | |
| download | compcert-kvx-dff22ef6d855973e0e0f05c7203a6bfa9a4cf01a.tar.gz compcert-kvx-dff22ef6d855973e0e0f05c7203a6bfa9a4cf01a.zip | |
Extend builtin arguments with a pointer addition operator
This extension enables more addressing modes to be encoded as builtin arguments and used in conjunction with volatile memory accesses.
Current status: x86 port only, the only new addressing mode handled is reg + offset.
Diffstat (limited to 'backend/ValueAnalysis.v')
| -rw-r--r-- | backend/ValueAnalysis.v | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/backend/ValueAnalysis.v b/backend/ValueAnalysis.v index 17a518cd..7c4c0525 100644 --- a/backend/ValueAnalysis.v +++ b/backend/ValueAnalysis.v @@ -59,6 +59,10 @@ Fixpoint abuiltin_arg (ae: aenv) (am: amem) (rm: romem) (ba: builtin_arg reg) : | BA_loadglobal chunk id ofs => loadv chunk rm am (Ptr (Gl id ofs)) | BA_addrglobal id ofs => Ptr (Gl id ofs) | BA_splitlong hi lo => longofwords (abuiltin_arg ae am rm hi) (abuiltin_arg ae am rm lo) + | BA_addptr ba1 ba2 => + let v1 := abuiltin_arg ae am rm ba1 in + let v2 := abuiltin_arg ae am rm ba2 in + if Archi.ptr64 then addl v1 v2 else add v1 v2 end. Definition set_builtin_res (br: builtin_res reg) (av: aval) (ae: aenv) : aenv := @@ -338,6 +342,7 @@ Proof. - simpl. rewrite Ptrofs.add_zero_l. auto with va. - eapply loadv_sound; eauto. apply symbol_address_sound; auto. - apply symbol_address_sound; auto. +- destruct Archi.ptr64; auto with va. Qed. Lemma abuiltin_args_sound: |