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