1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py 2; RUN: llc -mtriple=x86_64-linux-gnu -x86-use-fsrm-for-memcpy -mattr=-fsrm < %s -o - | FileCheck %s --check-prefix=NOFSRM 3; RUN: llc -mtriple=x86_64-linux-gnu -x86-use-fsrm-for-memcpy -mattr=+fsrm < %s -o - | FileCheck %s --check-prefix=FSRM 4; RUN: llc -mtriple=x86_64-linux-gnu -x86-use-fsrm-for-memcpy -mcpu=haswell < %s | FileCheck %s --check-prefix=NOFSRM 5; RUN: llc -mtriple=x86_64-linux-gnu -x86-use-fsrm-for-memcpy -mcpu=icelake-client < %s | FileCheck %s --check-prefix=FSRM 6; RUN: llc -mtriple=x86_64-linux-gnu -x86-use-fsrm-for-memcpy -mcpu=icelake-server < %s | FileCheck %s --check-prefix=FSRM 7; RUN: llc -mtriple=x86_64-linux-gnu -x86-use-fsrm-for-memcpy -mcpu=znver3 < %s | FileCheck %s --check-prefix=FSRM 8 9declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i1) nounwind 10 11define void @test1(i8* %a, i8* %b, i64 %s) nounwind { 12; NOFSRM-LABEL: test1: 13; NOFSRM: # %bb.0: 14; NOFSRM-NEXT: jmp memcpy@PLT # TAILCALL 15; 16; FSRM-LABEL: test1: 17; FSRM: # %bb.0: 18; FSRM-NEXT: movq %rdx, %rcx 19; FSRM-NEXT: rep;movsb (%rsi), %es:(%rdi) 20; FSRM-NEXT: retq 21 tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %a, i8* %b, i64 %s, i1 0) 22 ret void 23} 24 25; Check that we don't crash due to a memcpy size type mismatch error ("Cannot 26; emit physreg copy instruction") in X86InstrInfo::copyPhysReg. 27%struct = type { [4096 x i8] } 28declare void @foo(%struct* byval(%struct)) 29define void @test2(%struct* %x) { 30 call void @foo(%struct* byval(%struct) %x) 31 ret void 32} 33