| ; RUN: llc -mtriple arm64-apple-ios -mattr=+lse %s -o - | FileCheck %s |
| |
| ; Only "even,even+1" pairs are valid for CASP instructions. Make sure LLVM |
| ; doesn't allocate odd ones and that it can copy them around properly. N.b. we |
| ; don't actually check that they're sequential because FileCheck can't; odd/even |
| ; will have to be good enough. |
| define void @test_atomic_cmpxchg_i128_register_shuffling(i128* %addr, i128 %desired, i128 %new) nounwind { |
| ; CHECK-LABEL: test_atomic_cmpxchg_i128_register_shuffling: |
| ; CHECK-DAG: mov [[DESIRED_LO:x[0-9]*[02468]]], x1 |
| ; CHECK-DAG: mov [[DESIRED_HI:x[0-9]*[13579]]], x2 |
| ; CHECK-DAG: mov [[NEW_LO:x[0-9]*[02468]]], x3 |
| ; CHECK-DAG: mov [[NEW_HI:x[0-9]*[13579]]], x4 |
| ; CHECK: caspal [[DESIRED_LO]], [[DESIRED_HI]], [[NEW_LO]], [[NEW_HI]], [x0] |
| |
| %res = cmpxchg i128* %addr, i128 %desired, i128 %new seq_cst seq_cst |
| ret void |
| } |
