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Reorganise optimisation level settings, and make the insn shrink pass optional (#1044)

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This patch:

* removes the "default" opt level, on the basis that it has no definition and
  is referred to nowhere in the compiler.

* renames the "fastest" level to "none".  The resulting set of transformations
  is unchanged.

* renames the "best" level to "speed_and_size".  The resulting set of
  transformations is unchanged.

* adds a new level, "speed".  This is the same as "speed_and_size" except that
  it omits transformations aimed only at reducing code size.  Currently it
  omits only the insn shrinking pass.
This commit is contained in:
julian-seward1
2019-09-19 18:51:25 +02:00
committed by GitHub
parent 59139c6c46
commit 9e088e4164
27 changed files with 46 additions and 39 deletions
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2
cranelift/filetests/filetests/isa/x86/windows_fastcall_x64.clif
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@@ -1,5 +1,5 @@
test compile
set opt_level=best
set opt_level=speed_and_size
set is_pic
target x86_64 haswell