; RUN: opt < %s -simplifycfg -S | FileCheck %s define void @test(i32* %P, i32* %Q, i1 %A, i1 %B) { ; CHECK: test ; CHECK: br i1 ; CHECK-NOT: br i1 ; CHECK: ret ; CHECK: ret entry: br i1 %A, label %a, label %b a: br i1 %B, label %b, label %c b: store i32 123, i32* %P ret void c: ret void } ; rdar://10554090 define zeroext i1 @test2(i64 %i0, i64 %i1) nounwind uwtable readonly ssp { entry: ; CHECK: test2 ; CHECK: br i1 %and.i.i = and i64 %i0, 281474976710655 %and.i11.i = and i64 %i1, 281474976710655 %or.cond = icmp eq i64 %and.i.i, %and.i11.i br i1 %or.cond, label %c, label %a a: ; CHECK: br %shr.i4.i = lshr i64 %i0, 48 %and.i5.i = and i64 %shr.i4.i, 32767 %shr.i.i = lshr i64 %i1, 48 %and.i2.i = and i64 %shr.i.i, 32767 %cmp9.i = icmp ult i64 %and.i5.i, %and.i2.i br i1 %cmp9.i, label %c, label %b b: ; CHECK-NOT: br %shr.i13.i9 = lshr i64 %i1, 48 %and.i14.i10 = and i64 %shr.i13.i9, 32767 %shr.i.i11 = lshr i64 %i0, 48 %and.i11.i12 = and i64 %shr.i.i11, 32767 %phitmp = icmp uge i64 %and.i14.i10, %and.i11.i12 br label %c c: %o2 = phi i1 [ false, %a ], [ %phitmp, %b ], [ false, %entry ] ret i1 %o2 } ; PR13180 define void @pr13180(i8 %p) { entry: %tobool = icmp eq i8 %p, 0 br i1 %tobool, label %cond.false, label %cond.true cond.true: ; preds = %entry br label %cond.end cond.false: ; preds = %entry %phitmp = icmp eq i8 %p, 0 br label %cond.end cond.end: ; preds = %cond.false, %cond.true %cond = phi i1 [ undef, %cond.true ], [ %phitmp, %cond.false ] unreachable }