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view test/CodeGen/AArch64/arm64-stackpointer.ll @ 100:7d135dc70f03 LLVM 3.9

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LLVM 3.9
author Miyagi Mitsuki <e135756@ie.u-ryukyu.ac.jp>
date Tue, 26 Jan 2016 22:53:40 +0900
parents 60c9769439b8
children
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line source

; RUN: llc < %s -mtriple=arm64-linux-gnu | FileCheck %s

define i64 @get_stack() nounwind {
entry:
; CHECK-LABEL: get_stack:
; CHECK: mov   x0, sp
	%sp = call i64 @llvm.read_register.i64(metadata !0)
  ret i64 %sp
}

define void @set_stack(i64 %val) nounwind {
entry:
; CHECK-LABEL: set_stack:
; CHECK: mov   sp, x0
  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

; register unsigned long current_stack_pointer asm("sp");
; CHECK-NOT: .asciz  "sp"
!0 = !{!"sp\00"}