1; RUN: opt < %s -passes=simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S | FileCheck %s 2; RUN: opt < %s -passes=simplifycfg -S | FileCheck %s 3 4define i32 @foo(i32 %x) optforfuzzing { 5entry: 6 %x.addr = alloca i32, align 4 7 store i32 %x, ptr %x.addr, align 4 8 %0 = load i32, ptr %x.addr, align 4 9 %cmp = icmp sgt i32 %0, 16 10 br i1 %cmp, label %land.rhs, label %land.end 11 12land.rhs: 13 %1 = load i32, ptr %x.addr, align 4 14 %cmp1 = icmp slt i32 %1, 32 15 br label %land.end 16 17land.end: 18 %2 = phi i1 [ false, %entry ], [ %cmp1, %land.rhs ] 19 %conv = zext i1 %2 to i32 20 ret i32 %conv 21 22; CHECK-LABEL: define i32 @foo(i32 %x) 23; CHECK: br i1 %cmp, label %land.rhs, label %land.end 24; CHECK-LABEL: land.rhs: 25; CHECK: br label %land.end 26; CHECK-LABEL: land.end: 27; CHECK: phi {{.*}} %entry {{.*}} %land.rhs 28} 29 30define i32 @bar(i32 %x) { 31entry: 32 %x.addr = alloca i32, align 4 33 store i32 %x, ptr %x.addr, align 4 34 %0 = load i32, ptr %x.addr, align 4 35 %cmp = icmp sgt i32 %0, 16 36 br i1 %cmp, label %land.rhs, label %land.end 37 38land.rhs: 39 %1 = load i32, ptr %x.addr, align 4 40 %cmp1 = icmp slt i32 %1, 32 41 br label %land.end 42 43land.end: 44 %2 = phi i1 [ false, %entry ], [ %cmp1, %land.rhs ] 45 %conv = zext i1 %2 to i32 46 ret i32 %conv 47 48; CHECK-LABEL: define i32 @bar(i32 %x) 49; CHECK-NOT: br 50} 51