| ; RUN: llc -mcpu=atmega328p < %s -march=avr | FileCheck %s |
| |
| ; CHECK-LABEL: loopy |
| define internal fastcc void @loopy() { |
| |
| ; In this case, when we expand `Select8`/`Select16`, we should be |
| ; replacing the existing MBB instead of adding a new one. |
| ; |
| ; https://github.com/avr-rust/rust/issues/49 |
| |
| ; CHECK: LBB0_{{[0-9]+}}: |
| ; CHECK: LBB0_{{[0-9]+}}: |
| ; CHECK-NOT: LBB0_{{[0-9]+}}: |
| start: |
| br label %bb7.preheader |
| |
| bb7.preheader: ; preds = %bb10, %start |
| %i = phi i8 [ 0, %start ], [ %j, %bb10 ] |
| %j = phi i8 [ 1, %start ], [ %next, %bb10 ] |
| br label %bb10 |
| |
| bb4: ; preds = %bb10 |
| ret void |
| |
| bb10: ; preds = %bb7.preheader |
| tail call fastcc void @observe(i8 %i, i8 1) |
| %0 = icmp ult i8 %j, 20 |
| %1 = zext i1 %0 to i8 |
| %next = add i8 %j, %1 |
| br i1 %0, label %bb7.preheader, label %bb4 |
| |
| } |
| |
| declare void @observe(i8, i8); |
| |
