From d2159e300b2d5e017a3144c747d34949b2ff2769 Mon Sep 17 00:00:00 2001 From: David Monniaux Date: Tue, 2 Feb 2021 10:21:17 +0100 Subject: begin implementing select --- riscV/NeedOp.v | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'riscV/NeedOp.v') diff --git a/riscV/NeedOp.v b/riscV/NeedOp.v index 136c157f..9e1ad004 100644 --- a/riscV/NeedOp.v +++ b/riscV/NeedOp.v @@ -91,6 +91,7 @@ Definition needs_of_operation (op: operation) (nv: nval): list nval := | Obits_of_float => op1 (default nv) | Osingle_of_bits => op1 (default nv) | Ofloat_of_bits => op1 (default nv) + | Oselectl => All :: nv :: nv :: nil end. Definition operation_is_redundant (op: operation) (nv: nval): bool := @@ -158,6 +159,16 @@ Proof. - apply shlimm_sound; auto. - apply shrimm_sound; auto. - apply shruimm_sound; auto. +- (* selectl *) + unfold ExtValues.select01_long. + destruct v0; auto with na. + assert (Val.lessdef (Vint i) v4) as LESSDEF by auto with na. + inv LESSDEF. + destruct (Int.eq i Int.one). + { apply normalize_sound; auto. } + destruct (Int.eq i Int.zero). + { apply normalize_sound; auto. } + cbn. auto with na. Qed. Lemma operation_is_redundant_sound: -- cgit