1// RUN: %clang_cc1 -triple x86_64-linux-gnu -S -emit-llvm %s -o - | FileCheck %s 2// RUN: %clang_cc1 -triple arm64-linux-gnu -S -emit-llvm %s -o - | FileCheck %s 3// RUN: %clang_cc1 -triple armv7-linux-gnu -S -emit-llvm %s -o - | FileCheck %s 4 5// CHECK-NOT: @sp = common global 6register unsigned long current_stack_pointer asm("sp"); 7struct p4_Thread { 8 struct { 9 int len; 10 } word; 11}; 12// Testing pointer types as well 13register struct p4_Thread *p4TH asm("sp"); 14 15// CHECK: define{{.*}} i[[bits:[0-9]+]] @get_stack_pointer_addr() 16// CHECK: [[ret:%[0-9]+]] = call i[[bits]] @llvm.read_register.i[[bits]](metadata !0) 17// CHECK: ret i[[bits]] [[ret]] 18unsigned long get_stack_pointer_addr() { 19 return current_stack_pointer; 20} 21// CHECK: declare{{.*}} i[[bits]] @llvm.read_register.i[[bits]](metadata) 22 23// CHECK: define{{.*}} void @set_stack_pointer_addr(i[[bits]] %addr) #0 { 24// CHECK: [[sto:%[0-9]+]] = load i[[bits]]* % 25// CHECK: call void @llvm.write_register.i[[bits]](metadata !0, i[[bits]] [[sto]]) 26// CHECK: ret void 27void set_stack_pointer_addr(unsigned long addr) { 28 current_stack_pointer = addr; 29} 30// CHECK: declare{{.*}} void @llvm.write_register.i[[bits]](metadata, i[[bits]]) 31 32// CHECK: define {{.*}}@fn1 33int fn1() { 34 return (*p4TH).word.len; 35} 36// CHECK: %[[regr:[0-9]+]] = call i[[bits]] @llvm.read_register.i[[bits]](metadata !0) 37// CHECK: inttoptr i[[bits]] %[[regr]] to %struct.p4_Thread* 38 39// CHECK: define {{.*}}@fn2 40void fn2(struct p4_Thread *val) { 41 p4TH = val; 42} 43// CHECK: %[[regw:[0-9]+]] = ptrtoint %struct.p4_Thread* %{{.*}} to i[[bits]] 44// CHECK: call void @llvm.write_register.i[[bits]](metadata !0, i[[bits]] %[[regw]]) 45 46// CHECK: !llvm.named.register.sp = !{!0} 47// CHECK: !0 = metadata !{metadata !"sp"} 48