llvm/test/CodeGen/SPARC/leafproc-cfi.ll

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 6
; RUN: llc -mtriple=sparc -verify-machineinstrs < %s | FileCheck %s --check-prefix=V8
; RUN: llc -mtriple=sparcv9 -verify-machineinstrs < %s | FileCheck %s --check-prefix=V9

;; A leaf procedure that needs a stack frame only adjusts %sp; it does not
;; execute save, so the CFA must stay %sp-based (plus the stack bias on
;; SPARC64) and no register window may be described.

define void @leaf_small_frame() nounwind uwtable {
; V8-LABEL: leaf_small_frame:
; V8:         .cfi_startproc
; V8-NEXT:  ! %bb.0:
; V8-NEXT:    add %sp, -160, %sp
; V8-NEXT:    .cfi_def_cfa_offset 160
; V8-NEXT:    mov 1, %o0
; V8-NEXT:    st %o0, [%sp+96]
; V8-NEXT:    retl
; V8-NEXT:    add %sp, 160, %sp
;
; V9-LABEL: leaf_small_frame:
; V9:         .cfi_startproc
; V9-NEXT:  ! %bb.0:
; V9-NEXT:    add %sp, -192, %sp
; V9-NEXT:    .cfi_def_cfa_offset 2239
; V9-NEXT:    mov 1, %o0
; V9-NEXT:    st %o0, [%sp+2175]
; V9-NEXT:    retl
; V9-NEXT:    add %sp, 192, %sp
  %a = alloca [16 x i32]
  store volatile i32 1, ptr %a
  ret void
}

define void @leaf_large_frame() nounwind uwtable {
; V8-LABEL: leaf_large_frame:
; V8:         .cfi_startproc
; V8-NEXT:  ! %bb.0:
; V8-NEXT:    sethi 16, %g1
; V8-NEXT:    xor %g1, -96, %g1
; V8-NEXT:    add %sp, %g1, %sp
; V8-NEXT:    .cfi_def_cfa_offset 16480
; V8-NEXT:    mov 1, %o0
; V8-NEXT:    st %o0, [%sp+96]
; V8-NEXT:    sethi 16, %g1
; V8-NEXT:    or %g1, 96, %g1
; V8-NEXT:    retl
; V8-NEXT:    add %sp, %g1, %sp
;
; V9-LABEL: leaf_large_frame:
; V9:         .cfi_startproc
; V9-NEXT:  ! %bb.0:
; V9-NEXT:    sethi 16, %g1
; V9-NEXT:    xor %g1, -128, %g1
; V9-NEXT:    add %sp, %g1, %sp
; V9-NEXT:    .cfi_def_cfa_offset 18559
; V9-NEXT:    mov 1, %o0
; V9-NEXT:    st %o0, [%sp+2175]
; V9-NEXT:    sethi 16, %g1
; V9-NEXT:    or %g1, 128, %g1
; V9-NEXT:    retl
; V9-NEXT:    add %sp, %g1, %sp
  %a = alloca [4096 x i32]
  store volatile i32 1, ptr %a
  ret void
}

declare void @callee()

define void @nonleaf() nounwind uwtable {
; V8-LABEL: nonleaf:
; V8:         .cfi_startproc
; V8-NEXT:  ! %bb.0:
; V8-NEXT:    save %sp, -96, %sp
; V8-NEXT:    .cfi_def_cfa_register %fp
; V8-NEXT:    .cfi_window_save
; V8-NEXT:    .cfi_register %o7, %i7
; V8-NEXT:    call callee
; V8-NEXT:    nop
; V8-NEXT:    ret
; V8-NEXT:    restore
;
; V9-LABEL: nonleaf:
; V9:         .cfi_startproc
; V9-NEXT:  ! %bb.0:
; V9-NEXT:    save %sp, -176, %sp
; V9-NEXT:    .cfi_def_cfa_register %fp
; V9-NEXT:    .cfi_window_save
; V9-NEXT:    .cfi_register %o7, %i7
; V9-NEXT:    call callee
; V9-NEXT:    nop
; V9-NEXT:    ret
; V9-NEXT:    restore
  call void @callee()
  ret void
}