1 ; RUN: llc < %s -mtriple=arm-apple-darwin | FileCheck %s 2 ; RUN: llc < %s -mtriple=arm-linux-gnueabi | FileCheck %s 3 4 define i32 @get_stack() nounwind { 5 entry: 6 ; CHECK-LABEL: get_stack: 7 ; CHECK: mov r0, sp 8 %sp = call i32 @llvm.read_register.i32(metadata !0) 9 ret i32 %sp 10 } 11 12 define void @set_stack(i32 %val) nounwind { 13 entry: 14 ; CHECK-LABEL: set_stack: 15 ; CHECK: mov sp, r0 16 call void @llvm.write_register.i32(metadata !0, i32 %val) 17 ret void 18 } 19 20 declare i32 @llvm.read_register.i32(metadata) nounwind 21 declare void @llvm.write_register.i32(metadata, i32) nounwind 22 23 ; register unsigned long current_stack_pointer asm("sp"); 24 ; CHECK-NOT: .asciz "sp" 25 !0 = !{!"sp\00"} 26
