cranelift/reader/src/parser.rs: fn parse_inst_resuts: produce the results as a

SmallVec<[Value; 1]>, not as a Vec<Value>.  This isn't a useful change for any
non-developer use of Cranelift, but it does significantly reduce the amount of
allocation "noise" seen when tuning the new backend pipeline as driven by
clif-util reading .clif files.  In one case the number of malloc calls
declined by about 20% with this change.

Cargo.lock

@@ -489,6 +489,7 @@ name = "cranelift-reader"
 version = "0.63.0"
 dependencies = [
  "cranelift-codegen",
+ "smallvec",
  "target-lexicon",
  "thiserror",
 ]