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authorYuri Astrakhan <YuriAstrakhan@gmail.com>2024-07-19 11:51:21 -0400
committerYuri Astrakhan <YuriAstrakhan@gmail.com>2024-07-19 14:52:07 -0400
commitaef0e346de744faeaa522b9c08562bb3e1814adc (patch)
tree1d670ae42ce9ba8f4160dae59cc5ad09ace97d86 /compiler/rustc_codegen_cranelift/src
parent0cd01aac6a80735cc936f75b45e3545a5273e2ad (diff)
downloadrust-aef0e346de744faeaa522b9c08562bb3e1814adc.tar.gz
rust-aef0e346de744faeaa522b9c08562bb3e1814adc.zip
Avoid ref when using format! in compiler
Clean up a few minor refs in `format!` macro, as it has a performance cost. Apparently the compiler is unable to inline `format!("{}", &variable)`, and does a run-time double-reference instead (format macro already does one level referencing).  Inlining format args prevents accidental `&` misuse.
Diffstat (limited to 'compiler/rustc_codegen_cranelift/src')
-rw-r--r--compiler/rustc_codegen_cranelift/src/abi/mod.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/rustc_codegen_cranelift/src/abi/mod.rs b/compiler/rustc_codegen_cranelift/src/abi/mod.rs
index fa0de6f9de5..ac5aaea561c 100644
--- a/compiler/rustc_codegen_cranelift/src/abi/mod.rs
+++ b/compiler/rustc_codegen_cranelift/src/abi/mod.rs
@@ -505,7 +505,7 @@ pub(crate) fn codegen_terminator_call<'tcx>(
                 let nop_inst = fx.bcx.ins().nop();
                 fx.add_comment(
                     nop_inst,
-                    format!("virtual call; self arg pass mode: {:?}", &fn_abi.args[0]),
+                    format!("virtual call; self arg pass mode: {:?}", fn_abi.args[0]),
                 );
             }