1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; RUN: opt < %s -passes=jump-threading -S | FileCheck %s 3 4define i1 @func(i1 %arg, i32 %arg1, i1 %arg2) { 5; CHECK-LABEL: @func( 6; CHECK-NEXT: bb: 7; CHECK-NEXT: br i1 [[ARG:%.*]], label [[BB7:%.*]], label [[BB4:%.*]] 8; CHECK: bb4: 9; CHECK-NEXT: callbr void asm sideeffect "", "!i"() 10; CHECK-NEXT: to label [[BB7_THR_COMM:%.*]] [label %bb7.thr_comm] 11; CHECK: bb7.thr_comm: 12; CHECK-NEXT: [[I91:%.*]] = xor i1 [[ARG2:%.*]], [[ARG]] 13; CHECK-NEXT: br i1 [[I91]], label [[BB11:%.*]], label [[BB11]] 14; CHECK: bb7: 15; CHECK-NEXT: [[I:%.*]] = icmp eq i32 [[ARG1:%.*]], 0 16; CHECK-NEXT: [[I9:%.*]] = xor i1 [[I]], [[ARG]] 17; CHECK-NEXT: br i1 [[I9]], label [[BB11]], label [[BB11]] 18; CHECK: bb11: 19; CHECK-NEXT: [[I93:%.*]] = phi i1 [ [[I91]], [[BB7_THR_COMM]] ], [ [[I9]], [[BB7]] ], [ [[I91]], [[BB7_THR_COMM]] ], [ [[I9]], [[BB7]] ] 20; CHECK-NEXT: ret i1 [[I93]] 21; 22bb: 23 br i1 %arg, label %bb3, label %bb4 24 25bb3: 26 %i = icmp eq i32 %arg1, 0 27 br label %bb7 28 29bb4: 30 callbr void asm sideeffect "", "!i"() 31 to label %bb5 [label %bb6] 32 33bb5: 34 br label %bb6 35 36bb6: 37 br label %bb7 38 39bb7: 40 %i8 = phi i1 [ %i, %bb3 ], [ %arg2, %bb6 ] 41 %i9 = xor i1 %i8, %arg 42 br i1 %i9, label %bb11, label %bb10 43 44bb10: 45 br label %bb11 46 47bb11: 48 ret i1 %i9 49} 50 51define i32 @callbr_no_block_merge() { 52; CHECK-LABEL: @callbr_no_block_merge( 53; CHECK-NEXT: [[X:%.*]] = callbr i32 asm sideeffect "", "=r"() 54; CHECK-NEXT: to label [[BB:%.*]] [] 55; CHECK: bb: 56; CHECK-NEXT: ret i32 [[X]] 57; 58 %x = callbr i32 asm sideeffect "", "=r"() 59 to label %bb [] 60 61bb: 62 ret i32 %x 63} 64