32 lines
965 B
C++
32 lines
965 B
C++
// Most Clang cannot handle mixed asm with positional arguments, where the
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// body is Intel style with no prefix and the templates are AT&T style.
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// Also see https://bugs.llvm.org/show_bug.cgi?id=39895 .
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#include <cstddef>
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int main(int argc, char* argv[])
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{
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size_t ret = 1, N = 1;
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asm __volatile__
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(
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#if defined(__amd64__) || defined(__x86_64__)
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".intel_syntax noprefix ;\n"
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"xor rsi, rsi ;\n"
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"neg %1 ;\n"
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"inc %1 ;\n"
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"push %1 ;\n"
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"pop rax ;\n"
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".att_syntax prefix ;\n"
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: "=a" (ret) : "c" (N) : "%rsi"
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#else
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".intel_syntax noprefix ;\n"
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"xor esi, esi ;\n"
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"neg %1 ;\n"
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"inc %1 ;\n"
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"push %1 ;\n"
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"pop eax ;\n"
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".att_syntax prefix ;\n"
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: "=a" (ret) : "c" (N) : "%esi"
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#endif
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);
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return (int)ret;
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}
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