| // RUN: %target-sil-opt -enable-sil-opaque-values -enable-sil-verify-all %s -jumpthread-simplify-cfg | %FileCheck %s |
| |
| sil_stage canonical |
| |
| protocol P {} |
| |
| // Test jump threading into a destination block terminated by checked_cast_value_br. |
| // |
| // CHECK-LABEL: sil @testJumpThread : $@convention(thin) (Any, Any) -> () { |
| // CHECK: bb0(%0 : $Any, %1 : $Any): |
| // CHECK: cond_br undef, bb1, bb4 |
| // CHECK: bb1: |
| // CHECK: retain_value %0 : $Any |
| // CHECK: release_value %0 : $Any |
| // CHECK: checked_cast_value_br %0 : $Any to $P, bb3, bb2 |
| // CHECK-LABEL: } // end sil function 'testJumpThread' |
| sil @testJumpThread : $@convention(thin) (Any, Any) -> () { |
| bb0(%0 : $Any, %1 : $Any): |
| cond_br undef, bb1, bb2 |
| bb1: |
| retain_value %0 : $Any // force jump-threading |
| br bb6(%0 : $Any) |
| bb2: |
| br bb6(%1 : $Any) |
| bb6(%any : $Any): |
| release_value %any : $Any // force jump-threading |
| checked_cast_value_br %any : $Any to $P, bb7, bb8 |
| bb7(%p : $P): |
| br bb9 |
| bb8: |
| br bb9 |
| bb9: |
| %999 = tuple () |
| return %999 : $() |
| } |
