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; 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
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