| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py |
| ; RUN: llc -O0 -mtriple=aarch64-unknown-linux-gnu < %s | FileCheck %s |
| |
| ; GlobalISel cannot legalize this phi, so we fall back to SDAG. |
| define void @test() nounwind { |
| ; CHECK-LABEL: test: |
| ; CHECK: // %bb.0: // %entry |
| ; CHECK-NEXT: sub sp, sp, #16 // =16 |
| ; CHECK-NEXT: mov x1, xzr |
| ; CHECK-NEXT: mov x0, x1 |
| ; CHECK-NEXT: str x1, [sp] // 8-byte Folded Spill |
| ; CHECK-NEXT: str x0, [sp, #8] // 8-byte Folded Spill |
| ; CHECK-NEXT: b .LBB0_1 |
| ; CHECK-NEXT: .LBB0_1: // %loop |
| ; CHECK-NEXT: // =>This Inner Loop Header: Depth=1 |
| ; CHECK-NEXT: ldr x0, [sp, #8] // 8-byte Folded Reload |
| ; CHECK-NEXT: ldr x1, [sp] // 8-byte Folded Reload |
| ; CHECK-NEXT: str x1, [sp] // 8-byte Folded Spill |
| ; CHECK-NEXT: str x0, [sp, #8] // 8-byte Folded Spill |
| ; CHECK-NEXT: b .LBB0_1 |
| entry: |
| br label %loop |
| |
| loop: |
| %p = phi i72 [ 0, %entry ], [ %p, %loop ] |
| br label %loop |
| } |