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