63 lines
1.7 KiB
C++
63 lines
1.7 KiB
C++
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// RUN: %clang_cc1 -triple=x86_64-linux-gnu -emit-llvm -o - %s | FileCheck %s
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// Builtins inside a namespace inside an extern "C" must be considered builtins.
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extern "C" {
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namespace X {
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double __builtin_fabs(double);
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float __builtin_fabsf(float) noexcept;
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} // namespace X
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}
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int o = X::__builtin_fabs(-2.0);
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// CHECK: @o ={{.*}} global i32 2, align 4
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long p = X::__builtin_fabsf(-3.0f);
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// CHECK: @p ={{.*}} global i64 3, align 8
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// PR8839
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extern "C" char memmove();
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int main() {
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// CHECK: call {{signext i8|i8}} @memmove()
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return memmove();
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}
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struct S;
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// CHECK: define {{.*}} @_Z9addressofbR1SS0_(
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S *addressof(bool b, S &s, S &t) {
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// CHECK: %[[LVALUE:.*]] = phi
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// CHECK: ret {{.*}}* %[[LVALUE]]
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return __builtin_addressof(b ? s : t);
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}
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extern "C" int __builtin_abs(int); // #1
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long __builtin_abs(long); // #2
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extern "C" int __builtin_abs(int); // #3
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int x = __builtin_abs(-2);
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// CHECK: store i32 2, i32* @x, align 4
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long y = __builtin_abs(-2l);
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// CHECK: [[Y:%.+]] = call i64 @_Z13__builtin_absl(i64 -2)
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// CHECK: store i64 [[Y]], i64* @y, align 8
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extern const char char_memchr_arg[32];
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char *memchr_result = __builtin_char_memchr(char_memchr_arg, 123, 32);
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// CHECK: call i8* @memchr(i8* getelementptr inbounds ([32 x i8], [32 x i8]* @char_memchr_arg, i64 0, i64 0), i32 123, i64 32)
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int constexpr_overflow_result() {
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constexpr int x = 1;
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// CHECK: alloca i32
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constexpr int y = 2;
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// CHECK: alloca i32
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int z;
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// CHECK: [[Z:%.+]] = alloca i32
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__builtin_sadd_overflow(x, y, &z);
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return z;
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// CHECK: [[RET_PTR:%.+]] = extractvalue { i32, i1 } %0, 0
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// CHECK: store i32 [[RET_PTR]], i32* [[Z]]
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// CHECK: [[RET_VAL:%.+]] = load i32, i32* [[Z]]
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// CHECK: ret i32 [[RET_VAL]]
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}
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