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By allowing AnnotateAttr to be applied to statements, users can place arbitrary information in the AST for later use. For example, this can be used for HW-targeted language extensions that involve specialized loop annotations.
22 lines
1.3 KiB
C
22 lines
1.3 KiB
C
// RUN: %clang_cc1 %s -fsyntax-only -verify
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void __attribute__((annotate("foo"))) foo(float *a) {
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__attribute__((annotate("bar"))) int x;
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[[clang::annotate("bar")]] int x2;
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[[clang::annotate("bar")]] x2 += 1;
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__attribute__((annotate(1))) int y; // expected-error {{expected string literal as argument of 'annotate' attribute}}
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[[clang::annotate(1)]] int y2; // expected-error {{expected string literal as argument of 'annotate' attribute}}
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__attribute__((annotate("bar", 1))) int z;
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[[clang::annotate("bar", 1)]] int z2;
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[[clang::annotate("bar", 1)]] z2 += 1;
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int u = __builtin_annotation(z, (char*) 0); // expected-error {{second argument to __builtin_annotation must be a non-wide string constant}}
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int v = __builtin_annotation(z, (char*) L"bar"); // expected-error {{second argument to __builtin_annotation must be a non-wide string constant}}
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int w = __builtin_annotation(z, "foo");
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float b = __builtin_annotation(*a, "foo"); // expected-error {{first argument to __builtin_annotation must be an integer}}
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__attribute__((annotate())) int c; // expected-error {{'annotate' attribute takes at least 1 argument}}
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[[clang::annotate()]] int c2; // expected-error {{'annotate' attribute takes at least 1 argument}}
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[[clang::annotate()]] c2 += 1; // expected-error {{'annotate' attribute takes at least 1 argument}}
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}
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