llvm/test/Transforms/SimplifyCFG/switchToSelect-domtree-preservation-edgecase.ll

   1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
   2 ; RUN: opt -S -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -sink-common-insts=1 < %s | FileCheck %s
   3
   4 declare void @widget(i8)
   5
   6 define void @baz(i8 %arg, i8 %arg10, i1 %arg11) {
   7 ; CHECK-LABEL: @baz(
   8 ; CHECK-NEXT:  bb:
   9 ; CHECK-NEXT:    br label [[BB12:%.*]]
  10 ; CHECK:       bb12:
  11 ; CHECK-NEXT:    [[TMP:%.*]] = icmp eq i8 [[ARG:%.*]], 0
  12 ; CHECK-NEXT:    br i1 [[TMP]], label [[BB17:%.*]], label [[BB13:%.*]]
  13 ; CHECK:       bb13:
  14 ; CHECK-NEXT:    tail call void @widget(i8 11)
  15 ; CHECK-NEXT:    [[SWITCH_SELECTCMP:%.*]] = icmp eq i8 [[ARG10:%.*]], 73
  16 ; CHECK-NEXT:    [[SWITCH_SELECT:%.*]] = select i1 [[SWITCH_SELECTCMP]], i8 44, i8 22
  17 ; CHECK-NEXT:    [[SWITCH_SELECTCMP1:%.*]] = icmp eq i8 [[ARG10]], 68
  18 ; CHECK-NEXT:    [[SWITCH_SELECT2:%.*]] = select i1 [[SWITCH_SELECTCMP1]], i8 33, i8 [[SWITCH_SELECT]]
  19 ; CHECK-NEXT:    tail call void @widget(i8 [[SWITCH_SELECT2]])
  20 ; CHECK-NEXT:    br label [[BB17]]
  21 ; CHECK:       bb17:
  22 ; CHECK-NEXT:    br i1 [[ARG11:%.*]], label [[BB12]], label [[BB18:%.*]]
  23 ; CHECK:       bb18:
  24 ; CHECK-NEXT:    ret void
  25 ;
  26 bb:
  27   br label %bb12
  28
  29 bb12:                                             ; preds = %bb17, %bb
  30   %tmp = icmp eq i8 %arg, 0
  31   br i1 %tmp, label %bb17, label %bb13
  32
  33 bb13:                                             ; preds = %bb12
  34   tail call void @widget(i8 11)
  35   switch i8 %arg10, label %bb14 [
  36   i8 68, label %bb15
  37   i8 73, label %bb16
  38   ]
  39
  40 bb14:                                             ; preds = %bb13
  41   tail call void @widget(i8 22)
  42   br label %bb17
  43
  44 bb15:                                             ; preds = %bb13
  45   tail call void @widget(i8 33)
  46   br label %bb17
  47
  48 bb16:                                             ; preds = %bb13
  49   tail call void @widget(i8 44)
  50   br label %bb17
  51
  52 bb17:                                             ; preds = %bb16, %bb15, %bb14, %bb12
  53   br i1 %arg11, label %bb12, label %bb18
  54
  55 bb18:                                             ; preds = %bb17
  56   ret void
  57 }