| ; RUN: opt -S -jump-threading -verify -o - %s | FileCheck %s |
| @a = external global i16, align 1 |
| |
| ; CHECK-LABEL: f |
| ; CHECK: bb6: |
| ; CHECK: bb2: |
| ; CHECK: bb3: |
| ; CHECK-NOT: bb0: |
| ; CHECK-NOT: bb1: |
| ; CHECK-NOT: bb4: |
| ; CHECK-NOT: bb5: |
| define void @f(i32 %p1) { |
| bb0: |
| %0 = icmp eq i32 %p1, 0 |
| br i1 undef, label %bb6, label %bb1 |
| |
| bb1: |
| br label %bb2 |
| |
| bb2: |
| %1 = phi i1 [ %0, %bb1 ], [ %2, %bb4 ] |
| %2 = and i1 %1, undef |
| br i1 %2, label %bb3, label %bb4 |
| |
| bb3: |
| store i16 undef, i16* @a, align 1 |
| br label %bb4 |
| |
| bb4: |
| br i1 %0, label %bb2, label %bb5 |
| |
| bb5: |
| unreachable |
| |
| bb6: |
| ret void |
| } |
