forked from OSchip/llvm-project
25 lines
964 B
YAML
25 lines
964 B
YAML
# RUN: llc -mtriple=aarch64-none-linux-gnu -start-before=greedy -stop-after=prologepilog %s -o - | FileCheck %s
|
|
...
|
|
# Ensure that an object with a different stack-id is not allocated to a
|
|
# callee-save slot using stack-slot scavenging. This test saves X28 which
|
|
# creates a hole in the CSR stack region, but it should not be saved to.
|
|
# Instead of saving to SP + 1 (which would be the hole in the region), it
|
|
# should save to SP + 2 (since AArch64 codegen currently does not support
|
|
# (and thus allocate) objects with a stack-id > 0).
|
|
name: test_no_stackslot_scavenging
|
|
# CHECK: name: test_no_stackslot_scavenging
|
|
# CHECK: STRXui $x0, $sp, 2
|
|
tracksRegLiveness: true
|
|
frameInfo:
|
|
maxAlignment: 16
|
|
stack:
|
|
- { id: 0, stack-id: noalloc, size: 8, alignment: 8 }
|
|
body: |
|
|
bb.0.entry:
|
|
liveins: $x0
|
|
STRXui $x0, %stack.0, 0
|
|
; Force preserve a CSR to create a hole in the CSR stack region.
|
|
$x28 = IMPLICIT_DEF
|
|
RET_ReallyLR
|
|
---
|