Rename the 'cfg' module to 'flowgraph'.

The 'cfg' name was easy to confuse with 'configuration'.

lib/cretonne/src/context.rs

@@ -9,8 +9,8 @@
 //! contexts concurrently. Typically, you would have one context per compilation thread and only a
 //! single ISA instance.
 
-use cfg::ControlFlowGraph;
 use dominator_tree::DominatorTree;
+use flowgraph::ControlFlowGraph;
 use ir::Function;
 use isa::TargetIsa;
 use legalize_function;

lib/cretonne/src/dominator_tree.rs

@@ -1,8 +1,8 @@
 //! A Dominator Tree represented as mappings of Ebbs to their immediate dominator.
 
-use cfg::{ControlFlowGraph, BasicBlock};
-use ir::{Ebb, Inst, Function, Layout, ProgramOrder};
 use entity_map::EntityMap;
+use flowgraph::{ControlFlowGraph, BasicBlock};
+use ir::{Ebb, Inst, Function, Layout, ProgramOrder};
 use packed_option::PackedOption;
 
 use std::cmp::Ordering;
@@ -222,9 +222,9 @@ impl DominatorTree {
 
 #[cfg(test)]
 mod test {
-    use super::*;
+    use flowgraph::ControlFlowGraph;
     use ir::{Function, InstBuilder, Cursor, types};
-    use cfg::ControlFlowGraph;
+    use super::*;
 
     #[test]
     fn empty() {

lib/cretonne/src/lib.rs

@@ -10,7 +10,7 @@ pub use write::write_function;
 /// Version number of the cretonne crate.
 pub const VERSION: &'static str = env!("CARGO_PKG_VERSION");
 
-pub mod cfg;
+pub mod flowgraph;
 pub mod dominator_tree;
 pub mod entity_list;
 pub mod entity_map;

lib/cretonne/src/regalloc/context.rs

@@ -5,12 +5,12 @@
 //! avoids allocating data structures independently for each function begin compiled.
 
 use dominator_tree::DominatorTree;
+use flowgraph::ControlFlowGraph;
 use ir::Function;
+use isa::TargetIsa;
 use regalloc::coloring::Coloring;
 use regalloc::live_value_tracker::LiveValueTracker;
 use regalloc::liveness::Liveness;
-use isa::TargetIsa;
-use cfg::ControlFlowGraph;
 
 /// Persistent memory allocations for register allocation.
 pub struct Context {

lib/cretonne/src/regalloc/liveness.rs

@@ -175,12 +175,12 @@
 //!
 //! There is some room for improvement.
 
-use cfg::ControlFlowGraph;
+use flowgraph::ControlFlowGraph;
 use ir::dfg::ValueDef;
 use ir::{Function, Value, Inst, Ebb};
 use isa::{TargetIsa, RecipeConstraints};
-use regalloc::liverange::LiveRange;
 use regalloc::affinity::Affinity;
+use regalloc::liverange::LiveRange;
 use sparse_map::SparseMap;
 
 /// A set of live ranges, indexed by value number.

lib/cretonne/src/verifier.rs

@@ -53,11 +53,11 @@
 //!    - Swizzle and shuffle instructions take a variable number of lane arguments. The number
 //!      of arguments must match the destination type, and the lane indexes must be in range.
 
-use ir::{types, Function, ValueDef, Ebb, Inst, SigRef, FuncRef, ValueList, JumpTable, Value};
-use ir::instructions::{InstructionFormat, BranchInfo};
-use ir::entities::AnyEntity;
-use cfg::ControlFlowGraph;
 use dominator_tree::DominatorTree;
+use flowgraph::ControlFlowGraph;
+use ir::entities::AnyEntity;
+use ir::instructions::{InstructionFormat, BranchInfo};
+use ir::{types, Function, ValueDef, Ebb, Inst, SigRef, FuncRef, ValueList, JumpTable, Value};
 use std::fmt::{self, Display, Formatter};
 use std::result;