derek.holloway
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37 lines
1.3 KiB
C
37 lines
1.3 KiB
C
// REQUIRES: arm-registered-target
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// RUN: %clang_cc1 -triple arm -target-abi aapcs %s -emit-llvm -o - | FileCheck -check-prefix=AAPCS %s
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// RUN: %clang_cc1 -triple arm -target-abi apcs-gnu %s -emit-llvm -o - | FileCheck -check-prefix=APCS-GNU %s
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/*
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* Check that va_arg accesses stack according to ABI alignment
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* long long and double require 8-byte alignment under AAPCS
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* however, they only require 4-byte alignment under APCS
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*/
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long long t1(int i, ...) {
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// AAPCS: t1
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// APCS-GNU: t1
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__builtin_va_list ap;
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__builtin_va_start(ap, i);
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// AAPCS: [[ADD:%.*]] = getelementptr inbounds i8, ptr %argp.cur, i32 7
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// AAPCS = call ptr @llvm.ptrmask.p0.i32(ptr [[ADD]], i32 -8)
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// APCS-GNU-NOT: getelementptr {{.*}}, i32 7
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// APCS-GNU-NOT: llvm.ptrmask.p0
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long long ll = __builtin_va_arg(ap, long long);
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__builtin_va_end(ap);
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return ll;
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}
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double t2(int i, ...) {
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// AAPCS: t2
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// APCS-GNU: t2
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__builtin_va_list ap;
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__builtin_va_start(ap, i);
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// AAPCS: [[ADD:%.*]] = getelementptr inbounds i8, ptr %argp.cur, i32 7
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// AAPCS = call ptr @llvm.ptrmask.p0.i32(ptr [[ADD]], i32 -8)
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// APCS-GNU-NOT: getelementptr {{.*}}, i32 7
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// APCS-GNU-NOT: llvm.ptrmask.p0
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double ll = __builtin_va_arg(ap, double);
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__builtin_va_end(ap);
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return ll;
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}
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