| Jim Grosbach | f794705 | 2012-07-09 18:34:21 +0000 | [diff] [blame] | 1 | // REQUIRES: arm-registered-target |
| Rafael Espindola | e164c18 | 2011-08-02 22:33:37 +0000 | [diff] [blame] | 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 | */ |
| 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 | } |
| 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 | } |