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llvm-project/clang/test/CodeGen/builtins-memcpy-inline.c

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[clang] Add support for __builtin_memcpy_inline Summary: This is a follow up on D61634 and the last step to implement http://lists.llvm.org/pipermail/llvm-dev/2019-April/131973.html Reviewers: efriedma, courbet, tejohnson Subscribers: hiraditya, cfe-commits, llvm-commits, jdoerfert, t.p.northover Tags: #clang, #llvm Differential Revision: https://reviews.llvm.org/D73543
2020-01-28 20:01:19 +08:00
// REQUIRES: x86-registered-target
// RUN: %clang_cc1 -triple x86_64-unknown-linux -emit-llvm %s -o - | FileCheck %s
// CHECK-LABEL: define void @test_memcpy_inline_0(i8* %dst, i8* %src)
void test_memcpy_inline_0(void *dst, const void *src) {
// CHECK: call void @llvm.memcpy.inline.p0i8.p0i8.i64(i8* align 1 %0, i8* align 1 %1, i64 0, i1 false)
__builtin_memcpy_inline(dst, src, 0);
}
// CHECK-LABEL: define void @test_memcpy_inline_1(i8* %dst, i8* %src)
void test_memcpy_inline_1(void *dst, const void *src) {
// CHECK: call void @llvm.memcpy.inline.p0i8.p0i8.i64(i8* align 1 %0, i8* align 1 %1, i64 1, i1 false)
__builtin_memcpy_inline(dst, src, 1);
}
// CHECK-LABEL: define void @test_memcpy_inline_4(i8* %dst, i8* %src)
void test_memcpy_inline_4(void *dst, const void *src) {
// CHECK: call void @llvm.memcpy.inline.p0i8.p0i8.i64(i8* align 1 %0, i8* align 1 %1, i64 4, i1 false)
__builtin_memcpy_inline(dst, src, 4);
}
// CHECK-LABEL: define void @test_memcpy_inline_aligned_buffers(i64* %dst, i64* %src)
void test_memcpy_inline_aligned_buffers(unsigned long long *dst, const unsigned long long *src) {
// CHECK: call void @llvm.memcpy.inline.p0i8.p0i8.i64(i8* align 8 %2, i8* align 8 %3, i64 4, i1 false)
__builtin_memcpy_inline(dst, src, 4);
}