1 // REQUIRES: arm-registered-target
2 // RUN: %clang_cc1 -triple arm -target-abi aapcs %s -emit-llvm -o - | FileCheck -check-prefix=AAPCS %s
3 // RUN: %clang_cc1 -triple arm -target-abi apcs-gnu %s -emit-llvm -o - | FileCheck -check-prefix=APCS-GNU %s
4 /*
5 * Check that va_arg accesses stack according to ABI alignment
6 * long long and double require 8-byte alignment under AAPCS
7 * however, they only require 4-byte alignment under APCS
8 */
t1(int i,...)9 long long t1(int i, ...) {
10 // AAPCS: t1
11 // APCS-GNU: t1
12 __builtin_va_list ap;
13 __builtin_va_start(ap, i);
14 // AAPCS: add i32 %{{.*}} 7
15 // AAPCS: and i32 %{{.*}} -8
16 // APCS-GNU-NOT: add i32 %{{.*}} 7
17 // APCS-GNU-NOT: and i32 %{{.*}} -8
18 long long ll = __builtin_va_arg(ap, long long);
19 __builtin_va_end(ap);
20 return ll;
21 }
t2(int i,...)22 double t2(int i, ...) {
23 // AAPCS: t2
24 // APCS-GNU: t2
25 __builtin_va_list ap;
26 __builtin_va_start(ap, i);
27 // AAPCS: add i32 %{{.*}} 7
28 // AAPCS: and i32 %{{.*}} -8
29 // APCS-GNU-NOT: add i32 %{{.*}} 7
30 // APCS-GNU-NOT: and i32 %{{.*}} -8
31 double ll = __builtin_va_arg(ap, double);
32 __builtin_va_end(ap);
33 return ll;
34 }
35