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| author | Xavier Leroy <xavier.leroy@inria.fr> | 2019-04-15 17:50:30 +0200 |
|---|---|---|
| committer | Xavier Leroy <xavierleroy@users.noreply.github.com> | 2019-05-20 18:00:46 +0200 |
| commit | 49342474c19558709c8cea6d70eaba9a4dd7a150 (patch) | |
| tree | 86fb6e9fc2081a71a2d770811164bb2f72b867e6 /arm/NeedOp.v | |
| parent | 996f2e071baaf52105714283d141af2eac8ffbfb (diff) | |
| download | compcert-kvx-49342474c19558709c8cea6d70eaba9a4dd7a150.tar.gz compcert-kvx-49342474c19558709c8cea6d70eaba9a4dd7a150.zip | |
Implement a `Osel` operation for ARM
The operation comples down to conditional moves.
Both integer and floating-point conditional moves are supported.
Diffstat (limited to 'arm/NeedOp.v')
| -rw-r--r-- | arm/NeedOp.v | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arm/NeedOp.v b/arm/NeedOp.v index dee7cae1..c70c7e40 100644 --- a/arm/NeedOp.v +++ b/arm/NeedOp.v @@ -83,6 +83,7 @@ Definition needs_of_operation (op: operation) (nv: nval): list nval := | Omakelong => op2 (default nv) | Olowlong | Ohighlong => op1 (default nv) | Ocmp c => needs_of_condition c + | Osel c ty => nv :: nv :: needs_of_condition c end. Definition operation_is_redundant (op: operation) (nv: nval): bool := @@ -183,6 +184,10 @@ Proof. - apply notint_sound; auto. - apply notint_sound. apply needs_of_shift_sound; auto. - apply needs_of_shift_sound; auto. +- destruct (eval_condition c args m) as [b|] eqn:EC. + erewrite needs_of_condition_sound by eauto. + apply select_sound; auto. + simpl; auto with na. Qed. Lemma operation_is_redundant_sound: |