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Summary: We need x86-64-specific builtins if we want to implement some of the MS intrinsics - winnt.h contains definitions of some functions for i386, but not for x86-64 (for example _InterlockedOr64), which means that we cannot treat them as builtins for both i386 and x86-64, because then we have definitions of builtin functions in winnt.h on i386. Reviewers: thakis, majnemer, hans, rnk Subscribers: cfe-commits Differential Revision: https://reviews.llvm.org/D24598 llvm-svn: 283264
45 lines
1.8 KiB
C
45 lines
1.8 KiB
C
// RUN: %clang_cc1 -triple x86_64-unknown-unknown -fsyntax-only -verify %s -fms-extensions
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// RUN: %clang_cc1 -triple i386-unknown-unknown -fsyntax-only -verify %s -fms-extensions
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void f() {
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(void)_byteswap_ushort(42); // expected-warning{{implicitly declaring library function '_byteswap_ushort'}} \
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// expected-note{{include the header <stdlib.h> or explicitly provide a declaration for '_byteswap_ushort'}}
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(void)_byteswap_uint64(42LL); // expected-warning{{implicitly declaring library function '_byteswap_uint64'}} \
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// expected-note{{include the header <stdlib.h> or explicitly provide a declaration for '_byteswap_uint64'}}
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}
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void _byteswap_ulong(); // expected-warning{{incompatible redeclaration of library function '_byteswap_ulong'}} \
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// expected-note{{'_byteswap_ulong' is a builtin}}
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unsigned short _byteswap_ushort(unsigned short);
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unsigned long long _byteswap_uint64(unsigned long long);
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void g() {
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(void)_byteswap_ushort(42);
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(void)_byteswap_uint64(42LL);
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}
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#if defined(__x86_64__)
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void h() {
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(void)__mulh(21, 2); // expected-warning{{implicitly declaring library function '__mulh'}} \
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// expected-note{{include the header <intrin.h> or explicitly provide a declaration for '__mulh'}}
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(void)__umulh(21, 2); // expected-warning{{implicitly declaring library function '__umulh'}} \
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// expected-note{{include the header <intrin.h> or explicitly provide a declaration for '__umulh'}}
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}
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long long __mulh(long long, long long);
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unsigned long long __umulh(unsigned long long, unsigned long long);
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void i() {
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(void)__mulh(21, 2);
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(void)__umulh(21, 2);
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}
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#endif
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#if defined(i386)
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void h() {
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(void)__mulh(21LL, 2LL); // expected-warning{{implicit declaration of function '__mulh' is invalid}}
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(void)__umulh(21ULL, 2ULL); // expected-warning{{implicit declaration of function '__umulh' is invalid}}
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}
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#endif
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