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fd4828e40a
I am doing this separately from the actual change to eliminate the option to make it easier to review.
36 lines
1008 B
Plaintext
36 lines
1008 B
Plaintext
// RUN: %target-sil-opt -enable-sil-opaque-values -enable-sil-verify-all %s -jumpthread-simplify-cfg | %FileCheck %s
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sil_stage canonical
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protocol P {}
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// Test jump threading into a destination block terminated by checked_cast_value_br.
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//
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// CHECK-LABEL: sil @testJumpThread : $@convention(thin) (Any, Any) -> () {
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// CHECK: bb0(%0 : $Any, %1 : $Any):
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// CHECK: cond_br undef, bb1, bb4
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// CHECK: bb1:
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// CHECK: retain_value %0 : $Any
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// CHECK: release_value %0 : $Any
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// CHECK: checked_cast_value_br %0 : $Any to $P, bb3, bb2
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// CHECK-LABEL: } // end sil function 'testJumpThread'
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sil @testJumpThread : $@convention(thin) (Any, Any) -> () {
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bb0(%0 : $Any, %1 : $Any):
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cond_br undef, bb1, bb2
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bb1:
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retain_value %0 : $Any // force jump-threading
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br bb6(%0 : $Any)
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bb2:
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br bb6(%1 : $Any)
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bb6(%any : $Any):
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release_value %any : $Any // force jump-threading
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checked_cast_value_br %any : $Any to $P, bb7, bb8
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bb7(%p : $P):
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br bb9
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bb8:
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br bb9
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bb9:
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%999 = tuple ()
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return %999 : $()
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}
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