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1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py2; RUN: llc -mtriple=i686-linux-gnu -mattr=-ermsb < %s -o - | FileCheck %s --check-prefix=NOFAST323; RUN: llc -mtriple=i686-linux-gnu -mattr=+ermsb < %s -o - | FileCheck %s --check-prefix=FAST324; RUN: llc -mtriple=x86_64-linux-gnu -mattr=-ermsb < %s -o - | FileCheck %s --check-prefix=NOFAST5; RUN: llc -mtriple=x86_64-linux-gnu -mattr=+ermsb < %s -o - | FileCheck %s --check-prefix=FAST6; RUN: llc -mtriple=x86_64-linux-gnu -mcpu=generic < %s -o - | FileCheck %s --check-prefix=NOFAST7; RUN: llc -mtriple=x86_64-linux-gnu -mcpu=haswell < %s -o - | FileCheck %s --check-prefix=FAST8; RUN: llc -mtriple=x86_64-linux-gnu -mcpu=skylake < %s -o - | FileCheck %s --check-prefix=FAST9; FIXME: The documentation states that ivybridge has ermsb, but this is not10; enabled right now since I could not confirm by testing.11; RUN: llc -mtriple=x86_64-linux-gnu -mcpu=ivybridge < %s -o - | FileCheck %s --check-prefix=NOFAST12 13%struct.large = type { [4096 x i8] }14 15declare void @foo(ptr align 8 byval(%struct.large)) nounwind16 17define void @test1(ptr nocapture %x) nounwind {18; NOFAST32-LABEL: test1:19; NOFAST32: # %bb.0:20; NOFAST32-NEXT: pushl %edi21; NOFAST32-NEXT: pushl %esi22; NOFAST32-NEXT: subl $4100, %esp # imm = 0x100423; NOFAST32-NEXT: movl {{[0-9]+}}(%esp), %esi24; NOFAST32-NEXT: movl $1024, %ecx # imm = 0x40025; NOFAST32-NEXT: movl %esp, %edi26; NOFAST32-NEXT: rep;movsl (%esi), %es:(%edi)27; NOFAST32-NEXT: calll foo@PLT28; NOFAST32-NEXT: addl $4100, %esp # imm = 0x100429; NOFAST32-NEXT: popl %esi30; NOFAST32-NEXT: popl %edi31; NOFAST32-NEXT: retl32;33; FAST32-LABEL: test1:34; FAST32: # %bb.0:35; FAST32-NEXT: pushl %edi36; FAST32-NEXT: pushl %esi37; FAST32-NEXT: subl $4100, %esp # imm = 0x100438; FAST32-NEXT: movl {{[0-9]+}}(%esp), %esi39; FAST32-NEXT: movl $4096, %ecx # imm = 0x100040; FAST32-NEXT: movl %esp, %edi41; FAST32-NEXT: rep;movsb (%esi), %es:(%edi)42; FAST32-NEXT: calll foo@PLT43; FAST32-NEXT: addl $4100, %esp # imm = 0x100444; FAST32-NEXT: popl %esi45; FAST32-NEXT: popl %edi46; FAST32-NEXT: retl47;48; NOFAST-LABEL: test1:49; NOFAST: # %bb.0:50; NOFAST-NEXT: subq $4104, %rsp # imm = 0x100851; NOFAST-NEXT: movq %rdi, %rsi52; NOFAST-NEXT: movl $512, %ecx # imm = 0x20053; NOFAST-NEXT: movq %rsp, %rdi54; NOFAST-NEXT: rep;movsq (%rsi), %es:(%rdi)55; NOFAST-NEXT: callq foo@PLT56; NOFAST-NEXT: addq $4104, %rsp # imm = 0x100857; NOFAST-NEXT: retq58;59; FAST-LABEL: test1:60; FAST: # %bb.0:61; FAST-NEXT: subq $4104, %rsp # imm = 0x100862; FAST-NEXT: movq %rdi, %rsi63; FAST-NEXT: movl $4096, %ecx # imm = 0x100064; FAST-NEXT: movq %rsp, %rdi65; FAST-NEXT: rep;movsb (%rsi), %es:(%rdi)66; FAST-NEXT: callq foo@PLT67; FAST-NEXT: addq $4104, %rsp # imm = 0x100868; FAST-NEXT: retq69 call void @foo(ptr align 8 byval(%struct.large) %x)70 ret void71 72}73 74define void @test2(ptr nocapture %x) nounwind minsize {75; NOFAST32-LABEL: test2:76; NOFAST32: # %bb.0:77; NOFAST32-NEXT: pushl %edi78; NOFAST32-NEXT: pushl %esi79; NOFAST32-NEXT: subl $4100, %esp # imm = 0x100480; NOFAST32-NEXT: movl {{[0-9]+}}(%esp), %esi81; NOFAST32-NEXT: movl $4096, %ecx # imm = 0x100082; NOFAST32-NEXT: movl %esp, %edi83; NOFAST32-NEXT: rep;movsb (%esi), %es:(%edi)84; NOFAST32-NEXT: calll foo@PLT85; NOFAST32-NEXT: addl $4100, %esp # imm = 0x100486; NOFAST32-NEXT: popl %esi87; NOFAST32-NEXT: popl %edi88; NOFAST32-NEXT: retl89;90; FAST32-LABEL: test2:91; FAST32: # %bb.0:92; FAST32-NEXT: pushl %edi93; FAST32-NEXT: pushl %esi94; FAST32-NEXT: subl $4100, %esp # imm = 0x100495; FAST32-NEXT: movl {{[0-9]+}}(%esp), %esi96; FAST32-NEXT: movl $4096, %ecx # imm = 0x100097; FAST32-NEXT: movl %esp, %edi98; FAST32-NEXT: rep;movsb (%esi), %es:(%edi)99; FAST32-NEXT: calll foo@PLT100; FAST32-NEXT: addl $4100, %esp # imm = 0x1004101; FAST32-NEXT: popl %esi102; FAST32-NEXT: popl %edi103; FAST32-NEXT: retl104;105; NOFAST-LABEL: test2:106; NOFAST: # %bb.0:107; NOFAST-NEXT: subq $4104, %rsp # imm = 0x1008108; NOFAST-NEXT: movq %rdi, %rsi109; NOFAST-NEXT: movl $4096, %ecx # imm = 0x1000110; NOFAST-NEXT: movq %rsp, %rdi111; NOFAST-NEXT: rep;movsb (%rsi), %es:(%rdi)112; NOFAST-NEXT: callq foo@PLT113; NOFAST-NEXT: addq $4104, %rsp # imm = 0x1008114; NOFAST-NEXT: retq115;116; FAST-LABEL: test2:117; FAST: # %bb.0:118; FAST-NEXT: subq $4104, %rsp # imm = 0x1008119; FAST-NEXT: movq %rdi, %rsi120; FAST-NEXT: movl $4096, %ecx # imm = 0x1000121; FAST-NEXT: movq %rsp, %rdi122; FAST-NEXT: rep;movsb (%rsi), %es:(%rdi)123; FAST-NEXT: callq foo@PLT124; FAST-NEXT: addq $4104, %rsp # imm = 0x1008125; FAST-NEXT: retq126 call void @foo(ptr align 8 byval(%struct.large) %x)127 ret void128 129}130 131%struct.large_oddsize = type { [4095 x i8] }132 133declare void @foo_oddsize(ptr align 8 byval(%struct.large_oddsize)) nounwind134 135define void @test3(ptr nocapture %x) nounwind minsize {136; NOFAST32-LABEL: test3:137; NOFAST32: # %bb.0:138; NOFAST32-NEXT: pushl %edi139; NOFAST32-NEXT: pushl %esi140; NOFAST32-NEXT: subl $4100, %esp # imm = 0x1004141; NOFAST32-NEXT: movl {{[0-9]+}}(%esp), %esi142; NOFAST32-NEXT: movl $4095, %ecx # imm = 0xFFF143; NOFAST32-NEXT: movl %esp, %edi144; NOFAST32-NEXT: rep;movsb (%esi), %es:(%edi)145; NOFAST32-NEXT: calll foo_oddsize@PLT146; NOFAST32-NEXT: addl $4100, %esp # imm = 0x1004147; NOFAST32-NEXT: popl %esi148; NOFAST32-NEXT: popl %edi149; NOFAST32-NEXT: retl150;151; FAST32-LABEL: test3:152; FAST32: # %bb.0:153; FAST32-NEXT: pushl %edi154; FAST32-NEXT: pushl %esi155; FAST32-NEXT: subl $4100, %esp # imm = 0x1004156; FAST32-NEXT: movl {{[0-9]+}}(%esp), %esi157; FAST32-NEXT: movl $4095, %ecx # imm = 0xFFF158; FAST32-NEXT: movl %esp, %edi159; FAST32-NEXT: rep;movsb (%esi), %es:(%edi)160; FAST32-NEXT: calll foo_oddsize@PLT161; FAST32-NEXT: addl $4100, %esp # imm = 0x1004162; FAST32-NEXT: popl %esi163; FAST32-NEXT: popl %edi164; FAST32-NEXT: retl165;166; NOFAST-LABEL: test3:167; NOFAST: # %bb.0:168; NOFAST-NEXT: subq $4104, %rsp # imm = 0x1008169; NOFAST-NEXT: movq %rdi, %rsi170; NOFAST-NEXT: movl $4095, %ecx # imm = 0xFFF171; NOFAST-NEXT: movq %rsp, %rdi172; NOFAST-NEXT: rep;movsb (%rsi), %es:(%rdi)173; NOFAST-NEXT: callq foo_oddsize@PLT174; NOFAST-NEXT: addq $4104, %rsp # imm = 0x1008175; NOFAST-NEXT: retq176;177; FAST-LABEL: test3:178; FAST: # %bb.0:179; FAST-NEXT: subq $4104, %rsp # imm = 0x1008180; FAST-NEXT: movq %rdi, %rsi181; FAST-NEXT: movl $4095, %ecx # imm = 0xFFF182; FAST-NEXT: movq %rsp, %rdi183; FAST-NEXT: rep;movsb (%rsi), %es:(%rdi)184; FAST-NEXT: callq foo_oddsize@PLT185; FAST-NEXT: addq $4104, %rsp # imm = 0x1008186; FAST-NEXT: retq187 call void @foo_oddsize(ptr align 8 byval(%struct.large_oddsize) %x)188 ret void189 190}191