| ; RUN: llc < %s -mtriple=x86_64-unknown-linux-gnu | FileCheck %s |
| |
| define i8* @test_memcpy1(i8* %P, i8* %Q) { |
| ; CHECK: test_memcpy |
| call void @llvm.memcpy.element.atomic.p0i8.p0i8(i8* align 4 %P, i8* align 4 %Q, i64 1, i32 1) |
| ret i8* %P |
| ; CHECK-DAG: movl $1, %edx |
| ; CHECK-DAG: movl $1, %ecx |
| ; CHECK: __llvm_memcpy_element_atomic_1 |
| } |
| |
| define i8* @test_memcpy2(i8* %P, i8* %Q) { |
| ; CHECK: test_memcpy2 |
| call void @llvm.memcpy.element.atomic.p0i8.p0i8(i8* align 4 %P, i8* align 4 %Q, i64 2, i32 2) |
| ret i8* %P |
| ; CHECK-DAG: movl $2, %edx |
| ; CHECK-DAG: movl $2, %ecx |
| ; CHECK: __llvm_memcpy_element_atomic_2 |
| } |
| |
| define i8* @test_memcpy4(i8* %P, i8* %Q) { |
| ; CHECK: test_memcpy4 |
| call void @llvm.memcpy.element.atomic.p0i8.p0i8(i8* align 4 %P, i8* align 4 %Q, i64 4, i32 4) |
| ret i8* %P |
| ; CHECK-DAG: movl $4, %edx |
| ; CHECK-DAG: movl $4, %ecx |
| ; CHECK: __llvm_memcpy_element_atomic_4 |
| } |
| |
| define i8* @test_memcpy8(i8* %P, i8* %Q) { |
| ; CHECK: test_memcpy8 |
| call void @llvm.memcpy.element.atomic.p0i8.p0i8(i8* align 8 %P, i8* align 8 %Q, i64 8, i32 8) |
| ret i8* %P |
| ; CHECK-DAG: movl $8, %edx |
| ; CHECK-DAG: movl $8, %ecx |
| ; CHECK: __llvm_memcpy_element_atomic_8 |
| } |
| |
| define i8* @test_memcpy16(i8* %P, i8* %Q) { |
| ; CHECK: test_memcpy16 |
| call void @llvm.memcpy.element.atomic.p0i8.p0i8(i8* align 16 %P, i8* align 16 %Q, i64 16, i32 16) |
| ret i8* %P |
| ; CHECK-DAG: movl $16, %edx |
| ; CHECK-DAG: movl $16, %ecx |
| ; CHECK: __llvm_memcpy_element_atomic_16 |
| } |
| |
| define void @test_memcpy_args(i8** %Storage) { |
| ; CHECK: test_memcpy_args |
| %Dst = load i8*, i8** %Storage |
| %Src.addr = getelementptr i8*, i8** %Storage, i64 1 |
| %Src = load i8*, i8** %Src.addr |
| |
| ; First argument |
| ; CHECK-DAG: movq (%rdi), [[REG1:%r.+]] |
| ; CHECK-DAG: movq [[REG1]], %rdi |
| ; Second argument |
| ; CHECK-DAG: movq 8(%rdi), %rsi |
| ; Third argument |
| ; CHECK-DAG: movl $4, %edx |
| ; Fourth argument |
| ; CHECK-DAG: movl $4, %ecx |
| ; CHECK: __llvm_memcpy_element_atomic_4 |
| call void @llvm.memcpy.element.atomic.p0i8.p0i8(i8* align 4 %Dst, i8* align 4 %Src, i64 4, i32 4) |
| ret void |
| } |
| |
| declare void @llvm.memcpy.element.atomic.p0i8.p0i8(i8* nocapture, i8* nocapture, i64, i32) nounwind |
