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 */ 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 } 35
