1 ; RUN: opt < %s -simplifycfg -S | FileCheck %s 2 3 define 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 10 entry: 11 br i1 %A, label %a, label %b 12 a: 13 br i1 %B, label %b, label %c 14 b: 15 store i32 123, i32* %P 16 ret void 17 c: 18 ret void 19 } 20 21 ; rdar://10554090 22 define zeroext i1 @test2(i64 %i0, i64 %i1) nounwind uwtable readonly ssp { 23 entry: 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 31 a: 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 40 b: 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 49 c: 50 %o2 = phi i1 [ false, %a ], [ %phitmp, %b ], [ false, %entry ] 51 ret i1 %o2 52 } 53 54 ; PR13180 55 define void @pr13180(i8 %p) { 56 entry: 57 %tobool = icmp eq i8 %p, 0 58 br i1 %tobool, label %cond.false, label %cond.true 59 60 cond.true: ; preds = %entry 61 br label %cond.end 62 63 cond.false: ; preds = %entry 64 %phitmp = icmp eq i8 %p, 0 65 br label %cond.end 66 67 cond.end: ; preds = %cond.false, %cond.true 68 %cond = phi i1 [ undef, %cond.true ], [ %phitmp, %cond.false ] 69 unreachable 70 } 71
