1 files changed, 0 insertions, 34 deletions
diff --git a/compiler/rustc_codegen_cranelift/src/optimize/code_layout.rs b/compiler/rustc_codegen_cranelift/src/optimize/code_layout.rs
deleted file mode 100644
index ca9ff15ec10..00000000000
--- a/compiler/rustc_codegen_cranelift/src/optimize/code_layout.rs
+++ /dev/null
@@ -1,34 +0,0 @@
-//! This optimization moves cold code to the end of the function.
-//!
-//! Some code is executed much less often than other code. For example panicking or the
-//! landingpads for unwinding. By moving this cold code to the end of the function the average
-//! amount of jumps is reduced and the code locality is improved.
-//!
-//! # Undefined behaviour
-//!
-//! This optimization doesn't assume anything that isn't already assumed by Cranelift itself.
-
-use crate::prelude::*;
-
-pub(super) fn optimize_function(ctx: &mut Context, cold_blocks: &EntitySet<Block>) {
-    // FIXME Move the block in place instead of remove and append once
-    // bytecodealliance/cranelift#1339 is implemented.
-
-    let mut block_insts = FxHashMap::default();
-    for block in cold_blocks.keys().filter(|&block| cold_blocks.contains(block)) {
-        let insts = ctx.func.layout.block_insts(block).collect::<Vec<_>>();
-        for &inst in &insts {
-            ctx.func.layout.remove_inst(inst);
-        }
-        block_insts.insert(block, insts);
-        ctx.func.layout.remove_block(block);
-    }
-
-    // And then append them at the back again.
-    for block in cold_blocks.keys().filter(|&block| cold_blocks.contains(block)) {
-        ctx.func.layout.append_block(block);
-        for inst in block_insts.remove(&block).unwrap() {
-            ctx.func.layout.append_inst(inst, block);
-        }
-    }
-}