forked from OSchip/llvm-project
48 lines
1.7 KiB
C
48 lines
1.7 KiB
C
// RUN: %clang_cc1 -triple x86_64-linux-gnu -S -emit-llvm %s -o - | FileCheck %s
|
|
// RUN: %clang_cc1 -triple arm64-linux-gnu -S -emit-llvm %s -o - | FileCheck %s
|
|
// RUN: %clang_cc1 -triple armv7-linux-gnu -S -emit-llvm %s -o - | FileCheck %s
|
|
|
|
// CHECK-NOT: @sp = common global
|
|
register unsigned long current_stack_pointer asm("sp");
|
|
struct p4_Thread {
|
|
struct {
|
|
int len;
|
|
} word;
|
|
};
|
|
// Testing pointer types as well
|
|
register struct p4_Thread *p4TH asm("sp");
|
|
|
|
// CHECK: define{{.*}} i[[bits:[0-9]+]] @get_stack_pointer_addr()
|
|
// CHECK: [[ret:%[0-9]+]] = call i[[bits]] @llvm.read_register.i[[bits]](metadata !0)
|
|
// CHECK: ret i[[bits]] [[ret]]
|
|
unsigned long get_stack_pointer_addr() {
|
|
return current_stack_pointer;
|
|
}
|
|
// CHECK: declare{{.*}} i[[bits]] @llvm.read_register.i[[bits]](metadata)
|
|
|
|
// CHECK: define{{.*}} void @set_stack_pointer_addr(i[[bits]] %addr) #0 {
|
|
// CHECK: [[sto:%[0-9]+]] = load i[[bits]]* %
|
|
// CHECK: call void @llvm.write_register.i[[bits]](metadata !0, i[[bits]] [[sto]])
|
|
// CHECK: ret void
|
|
void set_stack_pointer_addr(unsigned long addr) {
|
|
current_stack_pointer = addr;
|
|
}
|
|
// CHECK: declare{{.*}} void @llvm.write_register.i[[bits]](metadata, i[[bits]])
|
|
|
|
// CHECK: define {{.*}}@fn1
|
|
int fn1() {
|
|
return (*p4TH).word.len;
|
|
}
|
|
// CHECK: %[[regr:[0-9]+]] = call i[[bits]] @llvm.read_register.i[[bits]](metadata !0)
|
|
// CHECK: inttoptr i[[bits]] %[[regr]] to %struct.p4_Thread*
|
|
|
|
// CHECK: define {{.*}}@fn2
|
|
void fn2(struct p4_Thread *val) {
|
|
p4TH = val;
|
|
}
|
|
// CHECK: %[[regw:[0-9]+]] = ptrtoint %struct.p4_Thread* %{{.*}} to i[[bits]]
|
|
// CHECK: call void @llvm.write_register.i[[bits]](metadata !0, i[[bits]] %[[regw]])
|
|
|
|
// CHECK: !llvm.named.register.sp = !{!0}
|
|
// CHECK: !0 = !{!"sp"}
|