1 # RUN: llc -mtriple=aarch64-none-linux-gnu -start-before=greedy -stop-after=prologepilog %s -o - | FileCheck %s
3 # Ensure that an object with a different stack-id is not allocated to a
4 # callee-save slot using stack-slot scavenging. This test saves X28 which
5 # creates a hole in the CSR stack region, but it should not be saved to.
6 # Instead of saving to SP + 1 (which would be the hole in the region), it
7 # should save to SP + 2 (since AArch64 codegen currently does not support
8 # (and thus allocate) objects with a stack-id > 0).
9 name: test_no_stackslot_scavenging
10 # CHECK: name: test_no_stackslot_scavenging
11 # CHECK: STRXui $x0, $sp, 2
12 tracksRegLiveness: true
16 - { id: 0, stack-id: noalloc, size: 8, alignment: 8 }
20 STRXui $x0, %stack.0, 0
21 ; Force preserve a CSR to create a hole in the CSR stack region.