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wasmtime/cranelift/filetests/filetests/isa/x86/legalize-br-table.clif
julian-seward1 9e088e4164 Reorganise optimisation level settings, and make the insn shrink pass optional (#1044)
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.
2019-09-19 18:51:25 +02:00

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test compile
set opt_level=speed_and_size
target x86_64
feature !"basic-blocks"
; regex: V=v\d+
; regex: EBB=ebb\d+
function u0:0(i64) system_v {
ss0 = explicit_slot 1
jt0 = jump_table [ebb1]
ebb0(v0: i64):
v1 = stack_addr.i64 ss0
v2 = load.i8 v1
br_table v2, ebb2, jt0
; check: $(oob=$V) = ifcmp_imm $(idx=$V), 1
; nextln: brif uge $oob, ebb2
; nextln: fallthrough $(inb=$EBB)
; check: $inb:
; nextln: $(final_idx=$V) = uextend.i64 $idx
; nextln: $(base=$V) = jump_table_base.i64 jt0
; nextln: $(rel_addr=$V) = jump_table_entry $final_idx, $base, 4, jt0
; nextln: $(addr=$V) = iadd $base, $rel_addr
; nextln: indirect_jump_table_br $addr, jt0
ebb2:
jump ebb1
ebb1:
return
}