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loop-region-analysis.sil
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// All bbs should have IDs that match the rpo order put out when printing with -sil-sort-output
// RUN: %target-sil-opt %s -loop-region-view-text -o /dev/null | FileCheck %s
import Builtin
//////////////////
// Declarations //
//////////////////
enum ManyCase {
case One
case Two
case Three
}
sil @no_return_func : $@convention(thin) @noreturn () -> ()
///////////
// Tests //
///////////
// One Level Natural Self Loop:
//
// BB0 -> BB1 -> BB2
// ^ |
// | |
// ----
//
// CHECK-LABEL: @one_natural_self_loop@
// CHECK: (region id:3 kind:func ucfh:false ucft:false
// CHECK-NEXT: (preds)
// CHECK-NEXT: (succs)
// CHECK-NEXT: (subregs
// CHECK-NEXT: (region id:0)
// CHECK-NEXT: (region id:4)
// CHECK-NEXT: (region id:2))
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:2 kind:bb ucfh:false ucft:false parent:3
// CHECK-NEXT: (preds
// CHECK-NEXT: (region id:4))
// CHECK-NEXT: (succs)
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:4 kind:loop ucfh:false ucft:false parent:3
// CHECK-NEXT: (preds
// CHECK-NEXT: (region id:0))
// CHECK-NEXT: (succs
// CHECK-NEXT: (region id:2))
// CHECK-NEXT: (subregs
// CHECK-NEXT: (region id:1))
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:1 kind:bb ucfh:false ucft:false parent:4
// CHECK-NEXT: (preds)
// CHECK-NEXT: (succs)
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs
// CHECK-NEXT: (parentindex:0)))
// CHECK: (region id:0 kind:bb ucfh:false ucft:false parent:3
// CHECK-NEXT: (preds)
// CHECK-NEXT: (succs
// CHECK-NEXT: (region id:4))
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs))
sil @one_natural_self_loop : $@convention(thin) () -> () {
bb0:
br bb1
bb1:
cond_br undef, bb1, bb2
bb2:
%9999 = tuple()
return %9999 : $()
}
// One Level Natural Loop:
//
// BB0 -> BB1 -> BB2 -> BB3 -> BB4
// ^ |
// | |
// ---------------
//
// CHECK-LABEL: @one_natural_loop@
// CHECK: (region id:5 kind:func ucfh:false ucft:false
// CHECK-NEXT: (preds)
// CHECK-NEXT: (succs)
// CHECK-NEXT: (subregs
// CHECK-NEXT: (region id:0)
// CHECK-NEXT: (region id:6)
// CHECK-NEXT: (region id:4))
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:4 kind:bb ucfh:false ucft:false parent:5
// CHECK-NEXT: (preds
// CHECK-NEXT: (region id:6))
// CHECK-NEXT: (succs)
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:6 kind:loop ucfh:false ucft:false parent:5
// CHECK-NEXT: (preds
// CHECK-NEXT: (region id:0))
// CHECK-NEXT: (succs
// CHECK-NEXT: (region id:4))
// CHECK-NEXT: (subregs
// CHECK-NEXT: (region id:1)
// CHECK-NEXT: (region id:2)
// CHECK-NEXT: (region id:3))
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:3 kind:bb ucfh:false ucft:false parent:6
// CHECK-NEXT: (preds
// CHECK-NEXT: (region id:2))
// CHECK-NEXT: (succs)
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs
// CHECK-NEXT: (parentindex:0)))
// CHECK: (region id:2 kind:bb ucfh:false ucft:false parent:6
// CHECK-NEXT: (preds
// CHECK-NEXT: (region id:1))
// CHECK-NEXT: (succs
// CHECK-NEXT: (region id:3))
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:1 kind:bb ucfh:false ucft:false parent:6
// CHECK-NEXT: (preds)
// CHECK-NEXT: (succs
// CHECK-NEXT: (region id:2))
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:0 kind:bb ucfh:false ucft:false parent:5
// CHECK-NEXT: (preds)
// CHECK-NEXT: (succs
// CHECK-NEXT: (region id:6))
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs))
sil @one_natural_loop : $@convention(thin) () -> () {
bb0:
br bb1
bb1:
br bb2
bb2:
br bb3
bb3:
cond_br undef, bb1, bb4
bb4:
%9999 = tuple()
return %9999 : $()
}
// One Level Natural Loop with Diamond inside.
// -> BB2 ---\
// / v
// BB0 -> BB1 -> BB3 -> BB4 -> BB5
// ^ |
// | |
// ---------------
//
// CHECK-LABEL: @one_natural_loop_with_diamond@
// CHECK: (region id:6 kind:func ucfh:false ucft:false
// CHECK-NEXT: (preds)
// CHECK-NEXT: (succs)
// CHECK-NEXT: (subregs
// CHECK-NEXT: (region id:0)
// CHECK-NEXT: (region id:7)
// CHECK-NEXT: (region id:5))
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:5 kind:bb ucfh:false ucft:false parent:6
// CHECK-NEXT: (preds
// CHECK-NEXT: (region id:7))
// CHECK-NEXT: (succs)
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:7 kind:loop ucfh:false ucft:false parent:6
// CHECK-NEXT: (preds
// CHECK-NEXT: (region id:0))
// CHECK-NEXT: (succs
// CHECK-NEXT: (region id:5))
// CHECK-NEXT: (subregs
// CHECK-NEXT: (region id:1)
// CHECK-NEXT: (region id:2)
// CHECK-NEXT: (region id:3)
// CHECK-NEXT: (region id:4))
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:4 kind:bb ucfh:false ucft:false parent:7
// CHECK-NEXT: (preds
// CHECK-NEXT: (region id:2)
// CHECK-NEXT: (region id:3))
// CHECK-NEXT: (succs)
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs
// CHECK-NEXT: (parentindex:0)))
// CHECK: (region id:3 kind:bb ucfh:false ucft:false parent:7
// CHECK-NEXT: (preds
// CHECK-NEXT: (region id:1))
// CHECK-NEXT: (succs
// CHECK-NEXT: (region id:4))
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:2 kind:bb ucfh:false ucft:false parent:7
// CHECK-NEXT: (preds
// CHECK-NEXT: (region id:1))
// CHECK-NEXT: (succs
// CHECK-NEXT: (region id:4))
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:1 kind:bb ucfh:false ucft:false parent:7
// CHECK-NEXT: (preds)
// CHECK-NEXT: (succs
// CHECK-NEXT: (region id:2)
// CHECK-NEXT: (region id:3))
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:0 kind:bb ucfh:false ucft:false parent:6
// CHECK-NEXT: (preds)
// CHECK-NEXT: (succs
// CHECK-NEXT: (region id:7))
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs))
sil @one_natural_loop_with_diamond : $@convention(thin) () -> () {
bb0:
br bb1
bb1:
cond_br undef, bb2, bb3
bb2:
br bb4
bb3:
br bb4
bb4:
cond_br undef, bb1, bb5
bb5:
%9999 = tuple()
return %9999 : $()
}
// One Level Natural Loop, multiple backedges
//
// BB0 -> BB1 -> BB2 -> BB3 -> BB4
// ^ | |
// | | |
// ---------------
//
// CHECK-LABEL: @one_natural_loop_multiple_backedges@
// CHECK: (region id:5 kind:func ucfh:false ucft:false
// CHECK-NEXT: (preds)
// CHECK-NEXT: (succs)
// CHECK-NEXT: (subregs
// CHECK-NEXT: (region id:0)
// CHECK-NEXT: (region id:6)
// CHECK-NEXT: (region id:4))
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:4 kind:bb ucfh:false ucft:false parent:5
// CHECK-NEXT: (preds
// CHECK-NEXT: (region id:6))
// CHECK-NEXT: (succs)
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:6 kind:loop ucfh:true ucft:true parent:5
// CHECK-NEXT: (preds
// CHECK-NEXT: (region id:0))
// CHECK-NEXT: (succs
// CHECK-NEXT: (region id:4))
// CHECK-NEXT: (subregs
// CHECK-NEXT: (region id:1)
// CHECK-NEXT: (region id:2)
// CHECK-NEXT: (region id:3))
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:3 kind:bb ucfh:false ucft:true parent:6
// CHECK-NEXT: (preds
// CHECK-NEXT: (region id:2))
// CHECK-NEXT: (succs)
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs
// CHECK-NEXT: (parentindex:0)))
// CHECK: (region id:2 kind:bb ucfh:false ucft:true parent:6
// CHECK-NEXT: (preds
// CHECK-NEXT: (region id:1))
// CHECK-NEXT: (succs
// CHECK-NEXT: (region id:3))
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:1 kind:bb ucfh:true ucft:false parent:6
// CHECK-NEXT: (preds)
// CHECK-NEXT: (succs
// CHECK-NEXT: (region id:2))
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:0 kind:bb ucfh:false ucft:false parent:5
// CHECK-NEXT: (preds)
// CHECK-NEXT: (succs
// CHECK-NEXT: (region id:6))
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs))
sil @one_natural_loop_multiple_backedges : $@convention(thin) () -> () {
bb0:
br bb1
bb1:
br bb2
bb2:
cond_br undef, bb1, bb3
bb3:
cond_br undef, bb1, bb4
bb4:
%9999 = tuple()
return %9999 : $()
}
// Make sure that we propagate up into the outer loop that we have a ucft in the
// inner loop. The ucfh does not propagate up b/c the header of the loop is not
// in the inner loop.
//
// CHECK-LABEL: @inner_natural_loop_with_multiple_backedges@
// CHECK: (region id:6 kind:func ucfh:false ucft:false
// CHECK-NEXT: (preds)
// CHECK-NEXT: (succs)
// CHECK-NEXT: (subregs
// CHECK-NEXT: (region id:0)
// CHECK-NEXT: (region id:7)
// CHECK-NEXT: (region id:5))
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:5 kind:bb ucfh:false ucft:false parent:6
// CHECK-NEXT: (preds
// CHECK-NEXT: (region id:7))
// CHECK-NEXT: (succs)
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:7 kind:loop ucfh:false ucft:true parent:6
// CHECK-NEXT: (preds
// CHECK-NEXT: (region id:0))
// CHECK-NEXT: (succs
// CHECK-NEXT: (region id:5))
// CHECK-NEXT: (subregs
// CHECK-NEXT: (region id:1)
// CHECK-NEXT: (region id:8))
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:8 kind:loop ucfh:true ucft:true parent:7
// CHECK-NEXT: (preds
// CHECK-NEXT: (region id:1))
// CHECK-NEXT: (succs)
// CHECK-NEXT: (subregs
// CHECK-NEXT: (region id:2)
// CHECK-NEXT: (region id:3)
// CHECK-NEXT: (region id:4))
// CHECK-NEXT: (non-local-succs
// CHECK-NEXT: (parentindex:0)))
// CHECK: (region id:4 kind:bb ucfh:false ucft:true parent:8
// CHECK-NEXT: (preds
// CHECK-NEXT: (region id:3))
// CHECK-NEXT: (succs)
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs
// CHECK-NEXT: (parentindex:1)))
// CHECK: (region id:3 kind:bb ucfh:false ucft:true parent:8
// CHECK-NEXT: (preds
// CHECK-NEXT: (region id:2))
// CHECK-NEXT: (succs
// CHECK-NEXT: (region id:4))
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:2 kind:bb ucfh:true ucft:false parent:8
// CHECK-NEXT: (preds)
// CHECK-NEXT: (succs
// CHECK-NEXT: (region id:3))
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:1 kind:bb ucfh:false ucft:false parent:7
// CHECK-NEXT: (preds)
// CHECK-NEXT: (succs
// CHECK-NEXT: (region id:8))
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:0 kind:bb ucfh:false ucft:false parent:6
// CHECK-NEXT: (preds)
// CHECK-NEXT: (succs
// CHECK-NEXT: (region id:7))
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs))
sil @inner_natural_loop_with_multiple_backedges : $@convention(thin) () -> () {
bb0:
br bb1
bb1:
br bb2
bb2:
br bb3
bb3:
cond_br undef, bb2, bb4
bb4:
switch_enum undef : $ManyCase, case #ManyCase.One!enumelt: bb1, case #ManyCase.Two!enumelt: bb2, case #ManyCase.Three!enumelt: bb5
bb5:
return undef : $()
}
// Two separate natural loops
//
// Make sure that we package them up correctly
//
// BB0 -> BB1 -> BB2 -> BB3 -> BB4 -> BB5
// ^ | ^ |
// | | | |
// -------- --------
//
// CHECK-LABEL: @two_separate_natural_loops@
// CHECK: (region id:6 kind:func ucfh:false ucft:false
// CHECK-NEXT: (preds)
// CHECK-NEXT: (succs)
// CHECK-NEXT: (subregs
// CHECK-NEXT: (region id:0)
// CHECK-NEXT: (region id:7)
// CHECK-NEXT: (region id:8)
// CHECK-NEXT: (region id:5))
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:5 kind:bb ucfh:false ucft:false parent:6
// CHECK-NEXT: (preds
// CHECK-NEXT: (region id:8))
// CHECK-NEXT: (succs)
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:8 kind:loop ucfh:false ucft:false parent:6
// CHECK-NEXT: (preds
// CHECK-NEXT: (region id:7))
// CHECK-NEXT: (succs
// CHECK-NEXT: (region id:5))
// CHECK-NEXT: (subregs
// CHECK-NEXT: (region id:3)
// CHECK-NEXT: (region id:4))
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:4 kind:bb ucfh:false ucft:false parent:8
// CHECK-NEXT: (preds
// CHECK-NEXT: (region id:3))
// CHECK-NEXT: (succs)
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs
// CHECK-NEXT: (parentindex:0)))
// CHECK: (region id:3 kind:bb ucfh:false ucft:false parent:8
// CHECK-NEXT: (preds)
// CHECK-NEXT: (succs
// CHECK-NEXT: (region id:4))
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:7 kind:loop ucfh:false ucft:false parent:6
// CHECK-NEXT: (preds
// CHECK-NEXT: (region id:0))
// CHECK-NEXT: (succs
// CHECK-NEXT: (region id:8))
// CHECK-NEXT: (subregs
// CHECK-NEXT: (region id:1)
// CHECK-NEXT: (region id:2))
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:2 kind:bb ucfh:false ucft:false parent:7
// CHECK-NEXT: (preds
// CHECK-NEXT: (region id:1))
// CHECK-NEXT: (succs)
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs
// CHECK-NEXT: (parentindex:0)))
// CHECK: (region id:1 kind:bb ucfh:false ucft:false parent:7
// CHECK-NEXT: (preds)
// CHECK-NEXT: (succs
// CHECK-NEXT: (region id:2))
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:0 kind:bb ucfh:false ucft:false parent:6
// CHECK-NEXT: (preds)
// CHECK-NEXT: (succs
// CHECK-NEXT: (region id:7))
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs))
sil @two_separate_natural_loops : $@convention(thin) () -> () {
bb0:
br bb1
bb1:
br bb2
bb2:
cond_br undef, bb1, bb3
bb3:
br bb4
bb4:
cond_br undef, bb3, bb5
bb5:
%9999 = tuple()
return %9999 : $()
}
// Two separate natural loops separated by a diamond
//
// Make sure that we package them up correctly
// -> BB3 -|
// / v
// BB0 -> BB1 -> BB2 ---> BB4 -> BB5 -> BB6
// ^ | ^ |
// | | | |
// -------- --------
//
// CHECK-LABEL: @two_separate_natural_loops_seperated_by_diamond@
// CHECK: (region id:7 kind:func ucfh:false ucft:false
// CHECK-NEXT: (preds)
// CHECK-NEXT: (succs)
// CHECK-NEXT: (subregs
// CHECK-NEXT: (region id:0)
// CHECK-NEXT: (region id:8)
// CHECK-NEXT: (region id:3)
// CHECK-NEXT: (region id:9)
// CHECK-NEXT: (region id:6))
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:6 kind:bb ucfh:false ucft:false parent:7
// CHECK-NEXT: (preds
// CHECK-NEXT: (region id:9))
// CHECK-NEXT: (succs)
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:9 kind:loop ucfh:false ucft:false parent:7
// CHECK-NEXT: (preds
// CHECK-NEXT: (region id:3)
// CHECK-NEXT: (region id:8))
// CHECK-NEXT: (succs
// CHECK-NEXT: (region id:6))
// CHECK-NEXT: (subregs
// CHECK-NEXT: (region id:4)
// CHECK-NEXT: (region id:5))
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:5 kind:bb ucfh:false ucft:false parent:9
// CHECK-NEXT: (preds
// CHECK-NEXT: (region id:4))
// CHECK-NEXT: (succs)
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs
// CHECK-NEXT: (parentindex:0)))
// CHECK: (region id:4 kind:bb ucfh:false ucft:false parent:9
// CHECK-NEXT: (preds)
// CHECK-NEXT: (succs
// CHECK-NEXT: (region id:5))
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:3 kind:bb ucfh:false ucft:false parent:7
// CHECK-NEXT: (preds
// CHECK-NEXT: (region id:8))
// CHECK-NEXT: (succs
// CHECK-NEXT: (region id:9))
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:8 kind:loop ucfh:false ucft:false parent:7
// CHECK-NEXT: (preds
// CHECK-NEXT: (region id:0))
// CHECK-NEXT: (succs
// CHECK-NEXT: (region id:3)
// CHECK-NEXT: (region id:9))
// CHECK-NEXT: (subregs
// CHECK-NEXT: (region id:1)
// CHECK-NEXT: (region id:2))
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:2 kind:bb ucfh:false ucft:false parent:8
// CHECK-NEXT: (preds
// CHECK-NEXT: (region id:1))
// CHECK-NEXT: (succs)
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs
// CHECK-NEXT: (parentindex:0)
// CHECK-NEXT: (parentindex:1)))
// CHECK: (region id:1 kind:bb ucfh:false ucft:false parent:8
// CHECK-NEXT: (preds)
// CHECK-NEXT: (succs
// CHECK-NEXT: (region id:2))
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:0 kind:bb ucfh:false ucft:false parent:7
// CHECK-NEXT: (preds)
// CHECK-NEXT: (succs
// CHECK-NEXT: (region id:8))
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs))
sil @two_separate_natural_loops_seperated_by_diamond : $@convention(thin) () -> () {
bb0:
br bb1
bb1:
br bb2
bb2:
switch_enum undef : $ManyCase, case #ManyCase.One!enumelt: bb1, case #ManyCase.Two!enumelt: bb3, case #ManyCase.Three!enumelt: bb4
bb3:
br bb4
bb4:
br bb5
bb5:
cond_br undef, bb4, bb6
bb6:
%9999 = tuple()
return %9999 : $()
}
// Two separate natural loops separated by a diamond with else having a loop.
//
// Make sure that we package them up correctly
//
// /------\
// v |
// |-> BB3 -> BB4------------\
// | | |
// | v v
// BB0 -> BB1 -> BB2 ------> BB5 -> BB6 -> BB7
// ^ | ^ |
// | | | |
// -------- --------
//
// CHECK-LABEL: @two_separate_natural_loops_seperated_by_diamond_with_loop@
// CHECK: (region id:8 kind:func ucfh:false ucft:false
// CHECK-NEXT: (preds)
// CHECK-NEXT: (succs)
// CHECK-NEXT: (subregs
// CHECK-NEXT: (region id:0)
// CHECK-NEXT: (region id:9)
// CHECK-NEXT: (region id:10)
// CHECK-NEXT: (region id:11)
// CHECK-NEXT: (region id:7))
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:7 kind:bb ucfh:false ucft:false parent:8
// CHECK-NEXT: (preds
// CHECK-NEXT: (region id:10)
// CHECK-NEXT: (region id:11))
// CHECK-NEXT: (succs)
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:11 kind:loop ucfh:false ucft:false parent:8
// CHECK-NEXT: (preds
// CHECK-NEXT: (region id:9)
// CHECK-NEXT: (region id:10))
// CHECK-NEXT: (succs
// CHECK-NEXT: (region id:7))
// CHECK-NEXT: (subregs
// CHECK-NEXT: (region id:5)
// CHECK-NEXT: (region id:6))
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:6 kind:bb ucfh:false ucft:false parent:11
// CHECK-NEXT: (preds
// CHECK-NEXT: (region id:5))
// CHECK-NEXT: (succs)
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs
// CHECK-NEXT: (parentindex:0)))
// CHECK: (region id:5 kind:bb ucfh:false ucft:false parent:11
// CHECK-NEXT: (preds)
// CHECK-NEXT: (succs
// CHECK-NEXT: (region id:6))
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:10 kind:loop ucfh:false ucft:false parent:8
// CHECK-NEXT: (preds
// CHECK-NEXT: (region id:9))
// CHECK-NEXT: (succs
// CHECK-NEXT: (region id:7)
// CHECK-NEXT: (region id:11))
// CHECK-NEXT: (subregs
// CHECK-NEXT: (region id:3)
// CHECK-NEXT: (region id:4))
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:4 kind:bb ucfh:false ucft:false parent:10
// CHECK-NEXT: (preds
// CHECK-NEXT: (region id:3))
// CHECK-NEXT: (succs)
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs
// CHECK-NEXT: (parentindex:0)
// CHECK-NEXT: (parentindex:1)))
// CHECK: (region id:3 kind:bb ucfh:false ucft:false parent:10
// CHECK-NEXT: (preds)
// CHECK-NEXT: (succs
// CHECK-NEXT: (region id:4))
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:9 kind:loop ucfh:false ucft:false parent:8
// CHECK-NEXT: (preds
// CHECK-NEXT: (region id:0))
// CHECK-NEXT: (succs
// CHECK-NEXT: (region id:10)
// CHECK-NEXT: (region id:11))
// CHECK-NEXT: (subregs
// CHECK-NEXT: (region id:1)
// CHECK-NEXT: (region id:2))
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:2 kind:bb ucfh:false ucft:false parent:9
// CHECK-NEXT: (preds
// CHECK-NEXT: (region id:1))
// CHECK-NEXT: (succs)
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs
// CHECK-NEXT: (parentindex:0)
// CHECK-NEXT: (parentindex:1)))
// CHECK: (region id:1 kind:bb ucfh:false ucft:false parent:9
// CHECK-NEXT: (preds)
// CHECK-NEXT: (succs
// CHECK-NEXT: (region id:2))
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:0 kind:bb ucfh:false ucft:false parent:8
// CHECK-NEXT: (preds)
// CHECK-NEXT: (succs
// CHECK-NEXT: (region id:9))
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs))
sil @two_separate_natural_loops_seperated_by_diamond_with_loop : $@convention(thin) () -> () {
bb0:
br bb1
bb1:
br bb2
bb2:
switch_enum undef : $ManyCase, case #ManyCase.One!enumelt: bb1, case #ManyCase.Two!enumelt: bb3, case #ManyCase.Three!enumelt: bb5
bb3:
br bb4
bb4:
switch_enum undef : $ManyCase, case #ManyCase.One!enumelt: bb3, case #ManyCase.Two!enumelt: bb5, case #ManyCase.Three!enumelt: bb7
bb5:
br bb6
bb6:
cond_br undef, bb5, bb7
bb7:
%9999 = tuple()
return %9999 : $()
}
// CHECK-LABEL: @three_separate_natural_loops@
// CHECK: (region id:8 kind:func ucfh:false ucft:false
// CHECK-NEXT: (preds)
// CHECK-NEXT: (succs)
// CHECK-NEXT: (subregs
// CHECK-NEXT: (region id:0)
// CHECK-NEXT: (region id:9)
// CHECK-NEXT: (region id:3)
// CHECK-NEXT: (region id:10)
// CHECK-NEXT: (region id:11)
// CHECK-NEXT: (region id:7))
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:7 kind:bb ucfh:false ucft:false parent:8
// CHECK-NEXT: (preds
// CHECK-NEXT: (region id:10)
// CHECK-NEXT: (region id:11))
// CHECK-NEXT: (succs)
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:11 kind:loop ucfh:false ucft:false parent:8
// CHECK-NEXT: (preds
// CHECK-NEXT: (region id:9))
// CHECK-NEXT: (succs
// CHECK-NEXT: (region id:7))
// CHECK-NEXT: (subregs
// CHECK-NEXT: (region id:5)
// CHECK-NEXT: (region id:6))
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:6 kind:bb ucfh:false ucft:false parent:11
// CHECK-NEXT: (preds
// CHECK-NEXT: (region id:5))
// CHECK-NEXT: (succs)
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs
// CHECK-NEXT: (parentindex:0)))
// CHECK: (region id:5 kind:bb ucfh:false ucft:false parent:11
// CHECK-NEXT: (preds)
// CHECK-NEXT: (succs
// CHECK-NEXT: (region id:6))
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:10 kind:loop ucfh:false ucft:false parent:8
// CHECK-NEXT: (preds
// CHECK-NEXT: (region id:3))
// CHECK-NEXT: (succs
// CHECK-NEXT: (region id:7))
// CHECK-NEXT: (subregs
// CHECK-NEXT: (region id:4))
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:4 kind:bb ucfh:false ucft:false parent:10
// CHECK-NEXT: (preds)
// CHECK-NEXT: (succs)
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs
// CHECK-NEXT: (parentindex:0)))
// CHECK: (region id:3 kind:bb ucfh:false ucft:false parent:8
// CHECK-NEXT: (preds
// CHECK-NEXT: (region id:9))
// CHECK-NEXT: (succs
// CHECK-NEXT: (region id:10))
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:9 kind:loop ucfh:false ucft:false parent:8
// CHECK-NEXT: (preds
// CHECK-NEXT: (region id:0))
// CHECK-NEXT: (succs
// CHECK-NEXT: (region id:3)
// CHECK-NEXT: (region id:11))
// CHECK-NEXT: (subregs
// CHECK-NEXT: (region id:1)
// CHECK-NEXT: (region id:2))
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:2 kind:bb ucfh:false ucft:false parent:9
// CHECK-NEXT: (preds
// CHECK-NEXT: (region id:1))
// CHECK-NEXT: (succs)
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs
// CHECK-NEXT: (parentindex:0)
// CHECK-NEXT: (parentindex:1)))
// CHECK: (region id:1 kind:bb ucfh:false ucft:false parent:9
// CHECK-NEXT: (preds)
// CHECK-NEXT: (succs
// CHECK-NEXT: (region id:2))
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:0 kind:bb ucfh:false ucft:false parent:8
// CHECK-NEXT: (preds)
// CHECK-NEXT: (succs
// CHECK-NEXT: (region id:9))
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs))
sil @three_separate_natural_loops : $@convention(thin) () -> () {
bb0:
br bb1
bb1:
br bb2
bb2:
switch_enum undef : $ManyCase, case #ManyCase.One!enumelt: bb1, case #ManyCase.Two!enumelt: bb3, case #ManyCase.Three!enumelt: bb5
bb3:
br bb4
bb4:
cond_br undef, bb3, bb7
bb5:
br bb6
bb6:
cond_br undef, bb6, bb7
bb7:
%9999 = tuple()
return %9999 : $()
}
// Two Level Natural Loop, one backedge
//
// BB0 -> BB1 -> BB2 -> BB3 -> BB4
// ^ ^ | |
// | |-- |
// ---------------
//
// CHECK-LABEL: @two_level_natural_loop@
// CHECK: (region id:5 kind:func ucfh:false ucft:false
// CHECK-NEXT: (preds)
// CHECK-NEXT: (succs)
// CHECK-NEXT: (subregs
// CHECK-NEXT: (region id:0)
// CHECK-NEXT: (region id:6)
// CHECK-NEXT: (region id:4))
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:4 kind:bb ucfh:false ucft:false parent:5
// CHECK-NEXT: (preds
// CHECK-NEXT: (region id:6))
// CHECK-NEXT: (succs)
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:6 kind:loop ucfh:false ucft:false parent:5
// CHECK-NEXT: (preds
// CHECK-NEXT: (region id:0))
// CHECK-NEXT: (succs
// CHECK-NEXT: (region id:4))
// CHECK-NEXT: (subregs
// CHECK-NEXT: (region id:1)
// CHECK-NEXT: (region id:7)
// CHECK-NEXT: (region id:3))
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:3 kind:bb ucfh:false ucft:false parent:6
// CHECK-NEXT: (preds
// CHECK-NEXT: (region id:7))
// CHECK-NEXT: (succs)
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs
// CHECK-NEXT: (parentindex:0)))
// CHECK: (region id:7 kind:loop ucfh:false ucft:false parent:6
// CHECK-NEXT: (preds
// CHECK-NEXT: (region id:1))
// CHECK-NEXT: (succs
// CHECK-NEXT: (region id:3))
// CHECK-NEXT: (subregs
// CHECK-NEXT: (region id:2))
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:2 kind:bb ucfh:false ucft:false parent:7
// CHECK-NEXT: (preds)
// CHECK-NEXT: (succs)
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs
// CHECK-NEXT: (parentindex:0)))
// CHECK: (region id:1 kind:bb ucfh:false ucft:false parent:6
// CHECK-NEXT: (preds)
// CHECK-NEXT: (succs
// CHECK-NEXT: (region id:7))
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:0 kind:bb ucfh:false ucft:false parent:5
// CHECK-NEXT: (preds)
// CHECK-NEXT: (succs
// CHECK-NEXT: (region id:6))
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs))
sil @two_level_natural_loop : $@convention(thin) () -> () {
bb0:
br bb1
bb1:
br bb2
bb2:
cond_br undef, bb2, bb3
bb3:
cond_br undef, bb1, bb4
bb4:
%9999 = tuple()
return %9999 : $()
}
// Two Level Natural Loop, one backedge, with loop in diamond.
// ---> BB3 --\
// / v
// BB0 -> BB1 -> BB2 -> BB4 -> BB5
// ^ ^ | |
// | |-- |
// ---------------
//
// CHECK-LABEL: @two_level_natural_loop_with_diamond_and_multiple_loop_exits@
// CHECK: (region id:6 kind:func ucfh:false ucft:false
// CHECK-NEXT: (preds)
// CHECK-NEXT: (succs)
// CHECK-NEXT: (subregs
// CHECK-NEXT: (region id:0)
// CHECK-NEXT: (region id:7)
// CHECK-NEXT: (region id:5))
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:5 kind:bb ucfh:false ucft:false parent:6
// CHECK-NEXT: (preds
// CHECK-NEXT: (region id:7))
// CHECK-NEXT: (succs)
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:7 kind:loop ucfh:false ucft:false parent:6
// CHECK-NEXT: (preds
// CHECK-NEXT: (region id:0))
// CHECK-NEXT: (succs
// CHECK-NEXT: (region id:5))
// CHECK-NEXT: (subregs
// CHECK-NEXT: (region id:1)
// CHECK-NEXT: (region id:8)
// CHECK-NEXT: (region id:3)
// CHECK-NEXT: (region id:4))
// CHECK-NEXT: (non-local-succs))
// CHECK: (region id:4 kind:bb ucfh:false ucft:false parent:7
// CHECK-NEXT: (preds
// CHECK-NEXT: (region id:3)
// CHECK-NEXT: (region id:8))
// CHECK-NEXT: (succs)
// CHECK-NEXT: (subregs)
// CHECK-NEXT: (non-local-succs
// CHECK-NEXT: (parentindex:0)))
// CHECK: (region id:3 kind:bb ucfh:false ucft:false parent:7
// CHECK-NEXT: (preds
// CHECK-NEXT: (region id:1)
// CHECK-NEXT: (region id:8))