1; RUN: opt < %s -simplifycfg -S | FileCheck %s 2 3define void @test(i32* %P, i32* %Q, i1 %A, i1 %B) { 4; CHECK: test 5; CHECK: br i1 6; CHECK-NOT: br i1 7; CHECK: ret 8; CHECK: ret 9 10entry: 11 br i1 %A, label %a, label %b 12a: 13 br i1 %B, label %b, label %c 14b: 15 store i32 123, i32* %P 16 ret void 17c: 18 ret void 19} 20 21; rdar://10554090 22define zeroext i1 @test2(i64 %i0, i64 %i1) nounwind uwtable readonly ssp { 23entry: 24; CHECK: test2 25; CHECK: br i1 26 %and.i.i = and i64 %i0, 281474976710655 27 %and.i11.i = and i64 %i1, 281474976710655 28 %or.cond = icmp eq i64 %and.i.i, %and.i11.i 29 br i1 %or.cond, label %c, label %a 30 31a: 32; CHECK: br 33 %shr.i4.i = lshr i64 %i0, 48 34 %and.i5.i = and i64 %shr.i4.i, 32767 35 %shr.i.i = lshr i64 %i1, 48 36 %and.i2.i = and i64 %shr.i.i, 32767 37 %cmp9.i = icmp ult i64 %and.i5.i, %and.i2.i 38 br i1 %cmp9.i, label %c, label %b 39 40b: 41; CHECK-NOT: br 42 %shr.i13.i9 = lshr i64 %i1, 48 43 %and.i14.i10 = and i64 %shr.i13.i9, 32767 44 %shr.i.i11 = lshr i64 %i0, 48 45 %and.i11.i12 = and i64 %shr.i.i11, 32767 46 %phitmp = icmp uge i64 %and.i14.i10, %and.i11.i12 47 br label %c 48 49c: 50 %o2 = phi i1 [ false, %a ], [ %phitmp, %b ], [ false, %entry ] 51 ret i1 %o2 52} 53 54; PR13180 55define void @pr13180(i8 %p) { 56entry: 57 %tobool = icmp eq i8 %p, 0 58 br i1 %tobool, label %cond.false, label %cond.true 59 60cond.true: ; preds = %entry 61 br label %cond.end 62 63cond.false: ; preds = %entry 64 %phitmp = icmp eq i8 %p, 0 65 br label %cond.end 66 67cond.end: ; preds = %cond.false, %cond.true 68 %cond = phi i1 [ undef, %cond.true ], [ %phitmp, %cond.false ] 69 unreachable 70} 71