mirror of
https://github.com/Gericom/teak-llvm.git
synced 2025-06-26 14:58:59 -04:00
a2ee433c8d
This adds Clang support for the ARM64 backend. There are definitely still some rough edges, so please bring up any issues you see with this patch. As with the LLVM commit though, we think it'll be more useful for merging with AArch64 from within the tree. llvm-svn: 205100
28 lines
898 B
C++
28 lines
898 B
C++
// RUN: %clang_cc1 -triple arm64-apple-ios -target-abi darwinpcs -emit-llvm -o - %s | FileCheck %s
|
|
struct Empty {};
|
|
|
|
Empty emptyvar;
|
|
|
|
int take_args(int a, ...) {
|
|
__builtin_va_list l;
|
|
__builtin_va_start(l, a);
|
|
// CHECK: call void @llvm.va_start
|
|
|
|
emptyvar = __builtin_va_arg(l, Empty);
|
|
// CHECK: load i8**
|
|
// CHECK-NOT: getelementptr
|
|
// CHECK: [[EMPTY_PTR:%[a-zA-Z0-9._]+]] = bitcast i8* {{%[a-zA-Z0-9._]+}} to %struct.Empty*
|
|
|
|
// It's conceivable that EMPTY_PTR may not actually be a valid pointer
|
|
// (e.g. it's at the very bottom of the stack and the next page is
|
|
// invalid). This doesn't matter provided it's never loaded (there's no
|
|
// well-defined way to tell), but it becomes a problem if we do try to use it.
|
|
// CHECK-NOT: load %struct.Empty* [[EMPTY_PTR]]
|
|
|
|
int i = __builtin_va_arg(l, int);
|
|
// CHECK: va_arg i8** {{%[a-zA-Z0-9._]+}}, i32
|
|
|
|
__builtin_va_end(l);
|
|
return i;
|
|
}
|