e167f753bd
See the attached test for the motivation example. If we're too greedy to not emit the definition for inline builtins, we may meet a middle end crash. And it should be good to emit inline builtins always.
37 lines
883 B
C++
37 lines
883 B
C++
// REQUIRES: !system-windows
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//
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// RUN: rm -rf %t
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// RUN: split-file %s %t
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// RUN: cd %t
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//
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// RUN: %clang_cc1 -std=c++20 -O3 %t/a.cppm -emit-module-interface -o %t/a.pcm
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// RUN: %clang_cc1 -std=c++20 -O3 %t/test.cc -fmodule-file=a=%t/a.pcm \
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// RUN: -emit-llvm -o - | FileCheck %t/test.cc
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//--- memmove.h
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typedef long unsigned int size_t;
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extern "C" void *memmove (void *__dest, const void *__src, size_t __n)
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throw () __attribute__ ((__nonnull__ (1, 2)));
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extern "C" __inline __attribute__ ((__always_inline__)) __attribute__ ((__gnu_inline__)) void *
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memmove (void *__dest, const void *__src, size_t __len) throw ()
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{
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return __builtin_memmove(__dest, __src, __len);
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}
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//--- a.cppm
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module;
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#include "memmove.h"
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export module a;
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export using ::memmove;
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//--- test.cc
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import a;
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void test() {
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int a, b;
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unsigned c = 0;
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memmove(&a, &b, c);
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}
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// CHECK-NOT: memmove
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