test/CodeGen/X86/memcpy-inline-fsrm.ll

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -mtriple=x86_64-linux-gnu -x86-use-fsrm-for-memcpy -mattr=-fsrm < %s -o - | FileCheck %s --check-prefix=NOFSRM
; RUN: llc -mtriple=x86_64-linux-gnu -x86-use-fsrm-for-memcpy -mattr=+fsrm < %s -o - | FileCheck %s --check-prefix=FSRM
; RUN: llc -mtriple=x86_64-linux-gnu -x86-use-fsrm-for-memcpy -mcpu=haswell < %s | FileCheck %s --check-prefix=NOFSRM
; RUN: llc -mtriple=x86_64-linux-gnu -x86-use-fsrm-for-memcpy -mcpu=icelake-client < %s | FileCheck %s --check-prefix=FSRM
; RUN: llc -mtriple=x86_64-linux-gnu -x86-use-fsrm-for-memcpy -mcpu=icelake-server < %s | FileCheck %s --check-prefix=FSRM
; RUN: llc -mtriple=x86_64-linux-gnu -x86-use-fsrm-for-memcpy -mcpu=znver3 < %s | FileCheck %s --check-prefix=FSRM

declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i1) nounwind

define void @test1(i8* %a, i8* %b, i64 %s) nounwind {
; NOFSRM-LABEL: test1
; NOFSRM:       # %bb.0:
; NOFSRM:         jmp memcpy
;
; FSRM-LABEL: test1
; FSRM:       # %bb.0:
; FSRM-NEXT:    movq %rdx, %rcx
; FSRM-NEXT:    rep;movsb (%rsi), %es:(%rdi)
; FSRM-NEXT:    retq
  tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %a, i8* %b, i64 %s, i1 0)
  ret void
}

; Check that we don't crash due to a memcpy size type mismatch error ("Cannot
; emit physreg copy instruction") in X86InstrInfo::copyPhysReg.
%struct = type { [4096 x i8] }
declare void @foo(%struct* byval(%struct))
define void @test2(%struct* %x) {
  call void @foo(%struct* byval(%struct) %x)
  ret void
}