Revert "Bump Iris."

This reverts commit b1eb1a06, to get initial timing without that commit.

opam

@@ -9,5 +9,5 @@ build: [make "-j%{jobs}%"]
 install: [make "install"]
 remove: [ "sh" "-c" "rm -rf '%{lib}%/coq/user-contrib/iris-c" ]
 depends: [
-  "coq-iris" { (= "dev.2019-03-14.2.66a69b0a") | (= "dev") }
+  "coq-iris" { (= "dev.2019-03-06.2.f5d03e25") | (= "dev") }
 ]

theories/c_translation/proofmode.v

@@ -78,7 +78,7 @@ Ltac cwp_pures :=
 
 Tactic Notation "cwp_rec" :=
   let H := fresh in
-  assert (H := AsRecV_recv);
+  assert (H := AsRecV_recv_locked);
   cwp_pure (App _ _);
   clear H.
 

theories/c_translation/translation.v

@@ -483,7 +483,7 @@ Section proofs.
                     (⌜v = #false⌝ ∧ U (CWP e2 @ R {{ Φ }})) }} -∗
     CWP ifᶜ (c) { e1 } elseᶜ { e2 } @ R {{ Φ }}.
   Proof.
-    iIntros "H". rewrite /c_if. cwp_pures.
+    iIntros "H". rewrite /c_if -lock. cwp_pures.
     cwp_apply (cwp_wp with "H"). iIntros (v) "H". cwp_pures.
     iApply cwp_seq_bind'. iApply (cwp_wand with "H").
     iIntros (v') "[[-> ?] | [-> ?]] !> !>"; by cwp_pures.
@@ -501,7 +501,7 @@ Section proofs.
       ∨ ⌜v = #false⌝ ∧ U (Φ #()) }} -∗
     CWP whileVᶜ (c) { e } @ R {{ Φ }}.
   Proof.
-    iIntros "H". cwp_lam. cwp_pures. rewrite /c_if. cwp_pures.
+    iIntros "H". cwp_lam. cwp_pures. rewrite /c_if -lock. cwp_pures.
     cwp_apply (cwp_wp with "H"). iIntros (v) "H". cwp_lam. cwp_pures.
     iApply cwp_seq_bind'. iApply (cwp_wand with "H").
     iIntros (v') "[[-> H] | [-> H]] !> !>".