llvm/test/CodeGen/AArch64/chkstk.ll

   1 ; RUN: llc -mtriple=aarch64-windows -verify-machineinstrs %s -o - \
   2 ; RUN:  | FileCheck -check-prefix CHECK-DEFAULT-CODE-MODEL %s
   3 ; RUN: llc < %s -mtriple=aarch64-windows -stop-after=prologepilog \
   4 ; RUN:  | FileCheck -check-prefix CHECK-REGSTATE %s
   5
   6 ; RUN: llc -mtriple=aarch64-windows -verify-machineinstrs -code-model=large %s -o - \
   7 ; RUN:  | FileCheck -check-prefix CHECK-LARGE-CODE-MODEL %s
   8 ; RUN: llc < %s -mtriple=aarch64-windows -stop-after=prologepilog -code-model=large \
   9 ; RUN:  | FileCheck -check-prefix CHECK-REGSTATE-LARGE %s
  10
  11 define void @check_watermark() {
  12 entry:
  13   %buffer = alloca [4096 x i8], align 1
  14   ret void
  15 }
  16
  17 ; CHECK-DEFAULT-CODE-MODEL: check_watermark:
  18 ; CHECK-DEFAULT-CODE-MODEL-DAG: stp x29, x30, [sp
  19 ; CHECK-DEFAULT-CODE-MODEL-DAG: mov x15, #256
  20 ; CHECK-DEFAULT-CODE-MODEL:     bl __chkstk
  21 ; CHECK-DEFAULT-CODE-MODEL:     sub sp, sp, x15, lsl #4
  22
  23 ; CHECK-REGSTATE: frame-setup BL &__chkstk, implicit-def $lr, implicit $sp, implicit $x15, implicit-def dead $x16, implicit-def dead $x17, implicit-def dead $nzcv
  24
  25 ; CHECK-LARGE-CODE-MODEL: check_watermark:
  26 ; CHECK-LARGE-CODE-MODEL-DAG: stp x29, x30, [sp
  27 ; CHECK-LARGE-CODE-MODEL-DAG: mov x15, #256
  28 ; CHECK-LARGE-CODE-MODEL-DAG: adrp x16, __chkstk
  29 ; CHECK-LARGE-CODE-MODEL-DAG: add x16, x16, __chkstk
  30 ; CHECK-LARGE-CODE-MODEL:     blr x16
  31 ; CHECK-LARGE-CODE-MODEL:     sub sp, sp, x15, lsl #4
  32
  33 ; CHECK-REGSTATE-LARGE: frame-setup BLR killed $x16, implicit-def $lr, implicit $sp, implicit-def $x15, implicit-def dead $x16, implicit-def dead $x17, implicit-def dead $nzcv