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71acf8dc7a
This pass was rewriting branches using the orignal branch target instead of the new branch target. It used to not matter when the pass was mannually splitting critical edges later. Now the splitting is handled automatically. Fixes rdar://71447520 (SILVerifier error after SimplifyCFG "Instruction does not dominate all uses!")
87 lines
1.9 KiB
Plaintext
87 lines
1.9 KiB
Plaintext
// RUN: %target-sil-opt -enable-sil-verify-all -simplify-cfg -debug-only=sil-simplify-cfg %s -o /dev/null 2>&1 | %FileCheck %s
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// REQUIRES: asserts
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import Builtin
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import Swift
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import Builtin
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import Swift
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protocol OtherKlass : class {}
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class Klass {}
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sil @getKlass : $@convention(thin) () -> @owned Klass
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// Verify that checked-cast jump-threading kicks in and generates verifiable SIL.
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//
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// CHECK: Condition is the same if reached over {{.*}} parent @$testCheckCastJumpThread : $@convention(thin) (@guaranteed Klass) -> @owned OtherKlass }
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// CHECK-NEXT: bb3(%{{.*}} : $OtherKlass):
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// CHECK-NEXT: br bb5(%{{.*}} : $Klass)
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sil shared @$testCheckCastJumpThread : $@convention(thin) (@guaranteed Klass) -> @owned OtherKlass {
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bb0(%0 : $Klass):
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%1 = function_ref @getKlass : $@convention(thin) () -> @owned Klass
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%2 = integer_literal $Builtin.Int64, 1
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%3 = apply %1() : $@convention(thin) () -> @owned Klass
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checked_cast_br %3 : $Klass to OtherKlass, bb1, bb2
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bb1(%5 : $OtherKlass):
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%6 = integer_literal $Builtin.Int1, -1
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br bb3(%6 : $Builtin.Int1)
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bb2:
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%8 = integer_literal $Builtin.Int1, 0
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br bb3(%8 : $Builtin.Int1)
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bb3(%10 : $Builtin.Int1):
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cond_br %10, bb5, bb6
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bb4:
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unreachable
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bb5:
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br bb7(%3 : $Klass)
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bb6:
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strong_release %3 : $Klass
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br bb10(%2 : $Builtin.Int64)
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bb7(%16 : $Klass):
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checked_cast_br %16 : $Klass to OtherKlass, bb9, bb8
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bb8:
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strong_release %16 : $Klass
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br bb4
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bb9(%20 : $OtherKlass):
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return %20 : $OtherKlass
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bb10(%22 : $Builtin.Int64):
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%23 = apply %1() : $@convention(thin) () -> @owned Klass
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checked_cast_br %23 : $Klass to OtherKlass, bb11, bb12
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bb11(%25 : $OtherKlass):
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%26 = integer_literal $Builtin.Int1, -1
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br bb13(%26 : $Builtin.Int1)
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bb12:
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%28 = integer_literal $Builtin.Int1, 0
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br bb13(%28 : $Builtin.Int1)
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bb13(%30 : $Builtin.Int1):
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cond_br %30, bb14, bb15
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bb14:
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br bb7(%23 : $Klass)
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bb15:
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cond_br undef, bb16, bb17
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bb16:
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br bb4
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bb17:
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br bb10(undef : $Builtin.Int64)
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}
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