26 lines
821 B
C
26 lines
821 B
C
// RUN: %clang_cc1 -triple x86_64-unknown-unknown -S -emit-llvm -o - %s | FileCheck %s
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//
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// Verifies that clang doesn't mark an inline builtin definition as `nobuiltin`
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// if the builtin isn't emittable.
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typedef unsigned long size_t;
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// always_inline is used so clang will emit this body. Otherwise, we need >=
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// -O1.
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#define AVAILABLE_EXTERNALLY extern inline __attribute__((always_inline)) \
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__attribute__((gnu_inline))
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AVAILABLE_EXTERNALLY void *memcpy(void *a, const void *b, size_t c) {
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return __builtin_memcpy(a, b, c);
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}
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// CHECK-LABEL: define{{.*}} void @foo
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void foo(void *a, const void *b, size_t c) {
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// Clang will always _emit_ this as memcpy. LLVM turns it into @llvm.memcpy
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// later on if optimizations are enabled.
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// CHECK: call i8* @memcpy
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memcpy(a, b, c);
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}
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// CHECK-NOT: nobuiltin
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