Add 'compiler/rustc_codegen_cranelift/' from commit '793d26047f994e23415f8f6bb5686ff25d3dda92'

git-subtree-dir: compiler/rustc_codegen_cranelift
git-subtree-mainline: cf798c1ec65a5ec3491846777f9003fabb881b4a
git-subtree-split: 793d26047f994e23415f8f6bb5686ff25d3dda92

1 files changed, 25 insertions, 0 deletions

diff --git a/compiler/rustc_codegen_cranelift/src/optimize/mod.rs b/compiler/rustc_codegen_cranelift/src/optimize/mod.rs
new file mode 100644
index 00000000000..3ce7f8cd9a8
--- /dev/null
+++ b/compiler/rustc_codegen_cranelift/src/optimize/mod.rs
@@ -0,0 +1,25 @@
+//! Various optimizations specific to cg_clif
+
+use crate::prelude::*;
+
+mod code_layout;
+pub(crate) mod peephole;
+mod stack2reg;
+
+pub(crate) fn optimize_function<'tcx>(
+    tcx: TyCtxt<'tcx>,
+    instance: Instance<'tcx>,
+    ctx: &mut Context,
+    cold_blocks: &EntitySet<Block>,
+    clif_comments: &mut crate::pretty_clif::CommentWriter,
+) {
+    // The code_layout optimization is very cheap.
+    self::code_layout::optimize_function(ctx, cold_blocks);
+
+    if tcx.sess.opts.optimize == rustc_session::config::OptLevel::No {
+        return; // FIXME classify optimizations over opt levels
+    }
+    self::stack2reg::optimize_function(ctx, clif_comments);
+    crate::pretty_clif::write_clif_file(tcx, "stack2reg", None, instance, &ctx, &*clif_comments);
+    crate::base::verify_func(tcx, &*clif_comments, &ctx.func);
+}