1 # RUN: llc -mtriple=aarch64-none-linux-gnu -run-pass=prologepilog %s -o - | FileCheck %s 2 3 # Ensure references to scavenged stack slots in the CSR area use the 4 # FP as a base when the stack pointer must be aligned to something 5 # larger than required by the target. This is necessary because the 6 # alignment padding area is between the CSR area and the SP, so the SP 7 # cannot be used to reference the CSR area. 8 name: test 9 tracksRegLiveness: true 10 frameInfo: 11 maxAlignment: 64 12 # CHECK: stack: 13 # CHECK: id: 0, name: '', type: default, offset: -64, size: 4, alignment: 64 14 # CHECK-NEXT: stack-id: 0 15 # CHECK-NEXT: local-offset: -64 16 # CHECK: id: 1, name: '', type: default, offset: -20, size: 4, alignment: 4 17 # CHECK-NEXT: stack-id: 0 18 # CHECK-NEXT: local-offset: -68 19 stack: 20 - { id: 0, size: 4, alignment: 64, local-offset: -64 } 21 - { id: 1, size: 4, alignment: 4, local-offset: -68 } 22 23 # CHECK: body: 24 # CHECK: $sp = ANDXri killed ${{x[0-9]+}}, 7865 25 # CHECK: STRSui $s0, $sp, 0 26 # CHECK: STURSi $s0, $fp, -4 27 body: | 28 bb.0.entry: 29 liveins: $s0 30 31 STRSui $s0, %stack.0, 0 32 STRSui $s0, %stack.1, 0 33 ; Force preserve a CSR to create a hole in the CSR stack region. 34 $x28 = IMPLICIT_DEF 35 RET_ReallyLR 36
