xref: /llvm-project/llvm/test/CodeGen/AArch64/memset-vs-memset-inline.ll (revision 5ddce70ef0e5a641d7fea95e31fc5e2439cb98cb)
1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2; RUN: llc < %s -mtriple=aarch64-unknown-linux-gnu | FileCheck %s
3
4declare void @llvm.memset.p0.i64(ptr nocapture, i8, i64, i1) nounwind
5declare void @llvm.memset.inline.p0.i64(ptr nocapture, i8, i64, i1) nounwind
6
7define void @test1(ptr %a, i8 %value) nounwind {
8; CHECK-LABEL: test1:
9; CHECK:       // %bb.0:
10; CHECK-NEXT:    // kill: def $w1 killed $w1 def $x1
11; CHECK-NEXT:    mov x8, #72340172838076673
12; CHECK-NEXT:    and x9, x1, #0xff
13; CHECK-NEXT:    mul x8, x9, x8
14; CHECK-NEXT:    str x8, [x0]
15; CHECK-NEXT:    ret
16  tail call void @llvm.memset.inline.p0.i64(ptr %a, i8 %value, i64 8, i1 0)
17  ret void
18}
19
20define void @regular_memset_calls_external_function(ptr %a, i8 %value) nounwind {
21; CHECK-LABEL: regular_memset_calls_external_function:
22; CHECK:       // %bb.0:
23; CHECK-NEXT:    mov w2, #1024
24; CHECK-NEXT:    b memset
25  tail call void @llvm.memset.p0.i64(ptr %a, i8 %value, i64 1024, i1 0)
26  ret void
27}
28
29define void @inlined_set_doesnt_call_external_function(ptr %a, i8 %value) nounwind {
30; CHECK-LABEL: inlined_set_doesnt_call_external_function:
31; CHECK:       // %bb.0:
32; CHECK-NEXT:    dup v0.16b, w1
33; CHECK-NEXT:    stp q0, q0, [x0]
34; CHECK-NEXT:    stp q0, q0, [x0, #32]
35  tail call void @llvm.memset.inline.p0.i64(ptr %a, i8 %value, i64 1024, i1 0)
36  ret void
37}
38