How to cut down compile time when inference is not the problem?

General Usage Performance
4

Just testing my patched version of Gridap.jl from here yields

Julia Version 1.5.4
Commit 69fcb5745b (2021-03-11 19:13 UTC)
Platform Info:
  OS: Windows (x86_64-w64-mingw32)
  CPU: Intel(R) Core(TM) i7-10710U CPU @ 1.10GHz
  WORD_SIZE: 64
  LIBM: libopenlibm
  LLVM: libLLVM-9.0.1 (ORCJIT, skylake)
Environment:
  JULIA_NUM_THREADS = 6
 80.101978 seconds (159.74 M allocations: 7.881 GiB, 3.13% gc time)
SingleFieldFEFunction():
 num_cells: 162
 DomainStyle: ReferenceDomain()
 Triangulation: BodyFittedTriangulation()
 Triangulation id: 17548864358240605896

and

Julia Version 1.7.0-rc3
Commit 3348de4ea6 (2021-11-15 08:22 UTC)
Platform Info:
  OS: Windows (x86_64-w64-mingw32)
  CPU: Intel(R) Core(TM) i7-10710U CPU @ 1.10GHz
  WORD_SIZE: 64
  LIBM: libopenlibm
  LLVM: libLLVM-12.0.1 (ORCJIT, skylake)
Environment:
  JULIA_NUM_THREADS = 6
 81.666169 seconds (183.65 M allocations: 10.239 GiB, 3.45% gc time, 99.60% compilation time)
SingleFieldFEFunction():
 num_cells: 162
 DomainStyle: ReferenceDomain()
 Triangulation: BodyFittedTriangulation()
 Triangulation id: 4899376070316862521
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