Make the regalloc module private.

Cretonne clients don't need to know how the register allocator works.

Export the RegDiversions type from the binemit module instead. It is
used by the "test binemit" driver.

cranelift/src/filetest/binemit.rs

@@ -10,7 +10,7 @@ use cretonne::binemit;
 use cretonne::dbg::DisplayList;
 use cretonne::ir;
 use cretonne::ir::entities::AnyEntity;
-use cretonne::regalloc::RegDiversions;
+use cretonne::binemit::RegDiversions;
 use cton_reader::TestCommand;
 use filetest::subtest::{SubTest, Context, Result};
 use utils::{match_directive, pretty_error};

lib/cretonne/src/binemit/mod.rs

@@ -6,11 +6,11 @@
 mod relaxation;
 mod memorysink;
 
+pub use regalloc::RegDiversions;
 pub use self::relaxation::relax_branches;
 pub use self::memorysink::{MemoryCodeSink, RelocSink};
 
 use ir::{ExternalName, JumpTable, Function, Inst};
-use regalloc::RegDiversions;
 use std::fmt;
 
 /// Offset in bytes from the beginning of the function.

lib/cretonne/src/lib.rs

@@ -25,7 +25,6 @@ pub mod ir;
 pub mod isa;
 pub mod loop_analysis;
 pub mod packed_option;
-pub mod regalloc;
 pub mod result;
 pub mod settings;
 pub mod timing;
@@ -40,6 +39,7 @@ mod licm;
 mod partition_slice;
 mod predicates;
 mod ref_slice;
+mod regalloc;
 mod scoped_hash_map;
 mod simple_gvn;
 mod stack_layout;