| ; RUN: opt -passes=jump-threading -S < %s | FileCheck %s |
| |
| ; Check that all zero branch weights do not cause a crash. |
| define void @zero_branch_weights(i32 %tmp, i32 %tmp3) { |
| bb: |
| %tmp1 = icmp eq i32 %tmp, 1 |
| br i1 %tmp1, label %bb5, label %bb2 |
| ; CHECK-NOT: br i1 %tmp1,{{.*}} !prof |
| |
| bb2: |
| %tmp4 = icmp ne i32 %tmp3, 1 |
| br label %bb5 |
| ; CHECK: br i1 %tmp4, {{.*}} !prof ![[PROF:[0-9]+]] |
| |
| bb5: |
| %tmp6 = phi i1 [ false, %bb ], [ %tmp4, %bb2 ] |
| br i1 %tmp6, label %bb8, label %bb7, !prof !{!"branch_weights", i32 0, i32 0} |
| |
| bb7: |
| br label %bb9 |
| |
| bb8: |
| br label %bb9 |
| |
| bb9: |
| ret void |
| } |
| |
| ;CHECK: ![[PROF]] = !{!"branch_weights", i32 -2147483648, i32 0} |
