From 3b0a9b9ecfdbf4a39806dbfc554826c3e3383c77 Mon Sep 17 00:00:00 2001
From: Dan Gohman <sunfish@mozilla.com>
Date: Mon, 26 Mar 2018 21:58:46 -0700
Subject: [PATCH] Remove an unused argument.

---
 lib/cretonne/src/context.rs    | 2 +-
 lib/cretonne/src/simple_gvn.rs | 4 +---
 2 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/lib/cretonne/src/context.rs b/lib/cretonne/src/context.rs
index c6018dcd9e..8358f21545 100644
--- a/lib/cretonne/src/context.rs
+++ b/lib/cretonne/src/context.rs
@@ -191,7 +191,7 @@ impl Context {
 
     /// Perform simple GVN on the function.
     pub fn simple_gvn<'a, FOI: Into<FlagsOrIsa<'a>>>(&mut self, fisa: FOI) -> CtonResult {
-        do_simple_gvn(&mut self.func, &mut self.cfg, &mut self.domtree);
+        do_simple_gvn(&mut self.func, &mut self.domtree);
         self.verify_if(fisa)
     }
 
diff --git a/lib/cretonne/src/simple_gvn.rs b/lib/cretonne/src/simple_gvn.rs
index dd0fb3b1aa..1cd82e4b2c 100644
--- a/lib/cretonne/src/simple_gvn.rs
+++ b/lib/cretonne/src/simple_gvn.rs
@@ -1,7 +1,6 @@
 //! A simple GVN pass.
 
 use cursor::{Cursor, FuncCursor};
-use flowgraph::ControlFlowGraph;
 use dominator_tree::DominatorTree;
 use ir::{InstructionData, Function, Inst, Opcode, Type};
 use scoped_hash_map::ScopedHashMap;
@@ -17,9 +16,8 @@ fn trivially_unsafe_for_gvn(opcode: Opcode) -> bool {
 
 /// Perform simple GVN on `func`.
 ///
-pub fn do_simple_gvn(func: &mut Function, cfg: &mut ControlFlowGraph, domtree: &mut DominatorTree) {
+pub fn do_simple_gvn(func: &mut Function, domtree: &mut DominatorTree) {
     let _tt = timing::gvn();
-    debug_assert!(cfg.is_valid());
     debug_assert!(domtree.is_valid());
 
     let mut visible_values: ScopedHashMap<(InstructionData, Type), Inst> = ScopedHashMap::new();