13cbbded6SSameer Sahasrabuddhe; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 289df0fdaSArthur Eubanks; RUN: opt < %s -unify-loop-exits -enable-new-pm=0 -S | FileCheck %s 3*529ecd19STa-Wei Tu; RUN: opt < %s -passes='lowerswitch,unify-loop-exits' -S | FileCheck %s 43cbbded6SSameer Sahasrabuddhe 53cbbded6SSameer Sahasrabuddhedefine void @nested(i1 %PredB3, i1 %PredB4, i1 %PredA4, i1 %PredA3, i32 %X, i32 %Y, i32 %Z) { 63cbbded6SSameer Sahasrabuddhe; CHECK-LABEL: @nested( 73cbbded6SSameer Sahasrabuddhe; CHECK-NEXT: entry: 83cbbded6SSameer Sahasrabuddhe; CHECK-NEXT: br label [[A1:%.*]] 93cbbded6SSameer Sahasrabuddhe; CHECK: A1: 103cbbded6SSameer Sahasrabuddhe; CHECK-NEXT: br label [[B1:%.*]] 113cbbded6SSameer Sahasrabuddhe; CHECK: B1: 123cbbded6SSameer Sahasrabuddhe; CHECK-NEXT: br label [[B2:%.*]] 133cbbded6SSameer Sahasrabuddhe; CHECK: B2: 143cbbded6SSameer Sahasrabuddhe; CHECK-NEXT: [[X_INC:%.*]] = add i32 [[X:%.*]], 1 153cbbded6SSameer Sahasrabuddhe; CHECK-NEXT: br label [[B3:%.*]] 163cbbded6SSameer Sahasrabuddhe; CHECK: B3: 173cbbded6SSameer Sahasrabuddhe; CHECK-NEXT: br i1 [[PREDB3:%.*]], label [[B4:%.*]], label [[LOOP_EXIT_GUARD1:%.*]] 183cbbded6SSameer Sahasrabuddhe; CHECK: B4: 193cbbded6SSameer Sahasrabuddhe; CHECK-NEXT: br i1 [[PREDB4:%.*]], label [[B1]], label [[LOOP_EXIT_GUARD1]] 203cbbded6SSameer Sahasrabuddhe; CHECK: A2: 213cbbded6SSameer Sahasrabuddhe; CHECK-NEXT: br label [[A4:%.*]] 223cbbded6SSameer Sahasrabuddhe; CHECK: A3: 233cbbded6SSameer Sahasrabuddhe; CHECK-NEXT: br label [[A4]] 243cbbded6SSameer Sahasrabuddhe; CHECK: A4: 253cbbded6SSameer Sahasrabuddhe; CHECK-NEXT: [[A4_PHI:%.*]] = phi i32 [ [[Y:%.*]], [[A3:%.*]] ], [ [[X_INC_MOVED:%.*]], [[A2:%.*]] ] 263cbbded6SSameer Sahasrabuddhe; CHECK-NEXT: br i1 [[PREDA4:%.*]], label [[LOOP_EXIT_GUARD:%.*]], label [[A5:%.*]] 273cbbded6SSameer Sahasrabuddhe; CHECK: A5: 283cbbded6SSameer Sahasrabuddhe; CHECK-NEXT: br i1 [[PREDA3:%.*]], label [[LOOP_EXIT_GUARD]], label [[A1]] 293cbbded6SSameer Sahasrabuddhe; CHECK: C: 303cbbded6SSameer Sahasrabuddhe; CHECK-NEXT: br label [[EXIT:%.*]] 313cbbded6SSameer Sahasrabuddhe; CHECK: exit: 323cbbded6SSameer Sahasrabuddhe; CHECK-NEXT: [[EXIT_PHI:%.*]] = phi i32 [ [[Z:%.*]], [[C:%.*]] ], [ [[EXIT_PHI_MOVED:%.*]], [[LOOP_EXIT_GUARD]] ] 333cbbded6SSameer Sahasrabuddhe; CHECK-NEXT: ret void 343cbbded6SSameer Sahasrabuddhe; CHECK: loop.exit.guard: 353cbbded6SSameer Sahasrabuddhe; CHECK-NEXT: [[GUARD_C:%.*]] = phi i1 [ true, [[A4]] ], [ false, [[A5]] ] 363cbbded6SSameer Sahasrabuddhe; CHECK-NEXT: [[EXIT_PHI_MOVED]] = phi i32 [ undef, [[A4]] ], [ [[A4_PHI]], [[A5]] ] 373cbbded6SSameer Sahasrabuddhe; CHECK-NEXT: br i1 [[GUARD_C]], label [[C]], label [[EXIT]] 383cbbded6SSameer Sahasrabuddhe; CHECK: loop.exit.guard1: 393cbbded6SSameer Sahasrabuddhe; CHECK-NEXT: [[GUARD_A3:%.*]] = phi i1 [ true, [[B3]] ], [ false, [[B4]] ] 403cbbded6SSameer Sahasrabuddhe; CHECK-NEXT: [[X_INC_MOVED]] = phi i32 [ [[X_INC]], [[B3]] ], [ [[X_INC]], [[B4]] ] 413cbbded6SSameer Sahasrabuddhe; CHECK-NEXT: br i1 [[GUARD_A3]], label [[A3]], label [[A2]] 423cbbded6SSameer Sahasrabuddhe; 433cbbded6SSameer Sahasrabuddheentry: 443cbbded6SSameer Sahasrabuddhe br label %A1 453cbbded6SSameer Sahasrabuddhe 463cbbded6SSameer SahasrabuddheA1: 473cbbded6SSameer Sahasrabuddhe br label %B1 483cbbded6SSameer Sahasrabuddhe 493cbbded6SSameer SahasrabuddheB1: 503cbbded6SSameer Sahasrabuddhe br label %B2 513cbbded6SSameer Sahasrabuddhe 523cbbded6SSameer SahasrabuddheB2: 533cbbded6SSameer Sahasrabuddhe %X.inc = add i32 %X, 1 543cbbded6SSameer Sahasrabuddhe br label %B3 553cbbded6SSameer Sahasrabuddhe 563cbbded6SSameer SahasrabuddheB3: 573cbbded6SSameer Sahasrabuddhe br i1 %PredB3, label %B4, label %A3 583cbbded6SSameer Sahasrabuddhe 593cbbded6SSameer SahasrabuddheB4: 603cbbded6SSameer Sahasrabuddhe br i1 %PredB4, label %B1, label %A2 613cbbded6SSameer Sahasrabuddhe 623cbbded6SSameer SahasrabuddheA2: 633cbbded6SSameer Sahasrabuddhe br label %A4 643cbbded6SSameer Sahasrabuddhe 653cbbded6SSameer SahasrabuddheA3: 663cbbded6SSameer Sahasrabuddhe br label %A4 673cbbded6SSameer Sahasrabuddhe 683cbbded6SSameer SahasrabuddheA4: 693cbbded6SSameer Sahasrabuddhe %A4.phi = phi i32 [%Y, %A3], [%X.inc, %A2] 703cbbded6SSameer Sahasrabuddhe br i1 %PredA4, label %C, label %A5 713cbbded6SSameer Sahasrabuddhe 723cbbded6SSameer SahasrabuddheA5: 733cbbded6SSameer Sahasrabuddhe br i1 %PredA3, label %exit, label %A1 743cbbded6SSameer Sahasrabuddhe 753cbbded6SSameer SahasrabuddheC: 763cbbded6SSameer Sahasrabuddhe br label %exit 773cbbded6SSameer Sahasrabuddhe 783cbbded6SSameer Sahasrabuddheexit: 793cbbded6SSameer Sahasrabuddhe %exit.phi = phi i32 [%A4.phi, %A5], [%Z, %C] 803cbbded6SSameer Sahasrabuddhe ret void 813cbbded6SSameer Sahasrabuddhe} 82