llvm/test/CodeGen/X86/frameaddr.ll

; RUN: llc < %s -march=x86                                | FileCheck %s --check-prefix=CHECK-32
; RUN: llc < %s -march=x86    -fast-isel -fast-isel-abort | FileCheck %s --check-prefix=CHECK-32
; RUN: llc < %s -march=x86-64                             | FileCheck %s --check-prefix=CHECK-64
; RUN: llc < %s -march=x86-64 -fast-isel -fast-isel-abort | FileCheck %s --check-prefix=CHECK-64
; RUN: llc < %s -mtriple=x86_64-gnux32                    | FileCheck %s --check-prefix=CHECK-X32ABI
; RUN: llc < %s -mtriple=x86_64-gnux32 -fast-isel -fast-isel-abort | FileCheck %s --check-prefix=CHECK-X32ABI

define i8* @test1() nounwind {
entry:
; CHECK-32-LABEL: test1
; CHECK-32:       push
; CHECK-32-NEXT:  movl %esp, %ebp
; CHECK-32-NEXT:  movl %ebp, %eax
; CHECK-32-NEXT:  pop
; CHECK-32-NEXT:  ret
; CHECK-64-LABEL: test1
; CHECK-64:       push
; CHECK-64-NEXT:  movq %rsp, %rbp
; CHECK-64-NEXT:  movq %rbp, %rax
; CHECK-64-NEXT:  pop
; CHECK-64-NEXT:  ret
; CHECK-X32ABI-LABEL: test1
; CHECK-X32ABI:       pushq %rbp
; CHECK-X32ABI-NEXT:  movl %esp, %ebp
; CHECK-X32ABI-NEXT:  movl %ebp, %eax
; CHECK-X32ABI-NEXT:  popq %rbp
; CHECK-X32ABI-NEXT:  ret
  %0 = tail call i8* @llvm.frameaddress(i32 0)
  ret i8* %0
}

define i8* @test2() nounwind {
entry:
; CHECK-32-LABEL: test2
; CHECK-32:       push
; CHECK-32-NEXT:  movl %esp, %ebp
; CHECK-32-NEXT:  movl (%ebp), %eax
; CHECK-32-NEXT:  movl (%eax), %eax
; CHECK-32-NEXT:  pop
; CHECK-32-NEXT:  ret
; CHECK-64-LABEL: test2
; CHECK-64:       push
; CHECK-64-NEXT:  movq %rsp, %rbp
; CHECK-64-NEXT:  movq (%rbp), %rax
; CHECK-64-NEXT:  movq (%rax), %rax
; CHECK-64-NEXT:  pop
; CHECK-64-NEXT:  ret
; CHECK-X32ABI-LABEL: test2
; CHECK-X32ABI:       pushq %rbp
; CHECK-X32ABI-NEXT:  movl %esp, %ebp
; CHECK-X32ABI-NEXT:  movl (%ebp), %eax
; CHECK-X32ABI-NEXT:  movl (%eax), %eax
; CHECK-X32ABI-NEXT:  popq %rbp
; CHECK-X32ABI-NEXT:  ret
  %0 = tail call i8* @llvm.frameaddress(i32 2)
  ret i8* %0
}

declare i8* @llvm.frameaddress(i32) nounwind readnone