File: get-reg.ll

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llvm-toolchain-20 1%3A20.1.8-1~exp1
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s --mtriple=loongarch64 -mattr=+d | FileCheck %s

define i64 @get_stack() nounwind {
; CHECK-LABEL: get_stack:
; CHECK:       # %bb.0: # %entry
; CHECK-NEXT:    move $a0, $sp
; CHECK-NEXT:    ret
entry:
  %sp = call i64 @llvm.read_register.i64(metadata !0)
  ret i64 %sp
}

define void @set_stack(i64 %val) nounwind {
; CHECK-LABEL: set_stack:
; CHECK:       # %bb.0: # %entry
; CHECK-NEXT:    move $sp, $a0
; CHECK-NEXT:    ret
entry:
  call void @llvm.write_register.i64(metadata !0, i64 %val)
  ret void
}

declare i64 @llvm.read_register.i64(metadata) nounwind
declare void @llvm.write_register.i64(metadata, i64) nounwind

!0 = !{!"$sp\00"}