# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple=thumbv8.1m.main -mattr=+mve -run-pass=arm-low-overhead-loops %s -verify-machineinstrs -o - | FileCheck %s
--- |
; Function Attrs: nofree norecurse nounwind
define dso_local arm_aapcs_vfpcc void @test(i32* noalias nocapture %a, i32* nocapture readonly %b, i32 %N) local_unnamed_addr #0 {
entry:
%cmp9 = icmp eq i32 %N, 0
%0 = add i32 %N, 3
%1 = lshr i32 %0, 2
%2 = shl nuw i32 %1, 2
%3 = add i32 %2, -4
%4 = lshr i32 %3, 2
%5 = add nuw nsw i32 %4, 1
br i1 %cmp9, label %for.cond.cleanup, label %vector.ph
vector.ph: ; preds = %entry
%div = lshr i32 %N, 1
%trip.count.minus.1 = add i32 %N, -1
%broadcast.splatinsert = insertelement <4 x i32> undef, i32 %trip.count.minus.1, i32 0
%broadcast.splat = shufflevector <4 x i32> %broadcast.splatinsert, <4 x i32> undef, <4 x i32> zeroinitializer
%start = call i32 @llvm.start.loop.iterations.i32(i32 %5)
br label %vector.body
vector.body: ; preds = %vector.body, %vector.ph
%lsr.iv3 = phi i32* [ %scevgep4, %vector.body ], [ %b, %vector.ph ]
%lsr.iv1 = phi i32* [ %scevgep, %vector.body ], [ %a, %vector.ph ]
%vec.ind = phi <4 x i32> [ <i32 0, i32 1, i32 2, i32 3>, %vector.ph ], [ %vec.ind.next, %vector.body ]
%elts.rem = phi i32 [ %N, %vector.ph ], [ %elts.rem.next, %vector.body ]
%6 = phi i32 [ %start, %vector.ph ], [ %12, %vector.body ]
%lsr.iv35 = bitcast i32* %lsr.iv3 to <4 x i32>*
%lsr.iv12 = bitcast i32* %lsr.iv1 to <4 x i32>*
%7 = insertelement <4 x i32> undef, i32 %div, i32 0
%8 = shufflevector <4 x i32> %7, <4 x i32> undef, <4 x i32> zeroinitializer
%9 = icmp ult <4 x i32> %vec.ind, %8
%10 = call <4 x i1> @llvm.arm.mve.vctp32(i32 %elts.rem)
%11 = and <4 x i1> %9, %10
%wide.masked.load = call <4 x i32> @llvm.masked.load.v4i32.p0v4i32(<4 x i32>* %lsr.iv35, i32 4, <4 x i1> %11, <4 x i32> undef)
call void @llvm.masked.store.v4i32.p0v4i32(<4 x i32> %wide.masked.load, <4 x i32>* %lsr.iv12, i32 4, <4 x i1> %11)
%vec.ind.next = add <4 x i32> %vec.ind, <i32 4, i32 4, i32 4, i32 4>
%elts.rem.next = sub i32 %elts.rem, 4
%scevgep = getelementptr i32, i32* %lsr.iv1, i32 4
%scevgep4 = getelementptr i32, i32* %lsr.iv3, i32 4
%12 = call i32 @llvm.loop.decrement.reg.i32.i32.i32(i32 %6, i32 1)
%13 = icmp ne i32 %12, 0
br i1 %13, label %vector.body, label %for.cond.cleanup
for.cond.cleanup: ; preds = %vector.body, %entry
ret void
}
declare <4 x i32> @llvm.masked.load.v4i32.p0v4i32(<4 x i32>*, i32 immarg, <4 x i1>, <4 x i32>)
declare void @llvm.masked.store.v4i32.p0v4i32(<4 x i32>, <4 x i32>*, i32 immarg, <4 x i1>)
declare <4 x i1> @llvm.arm.mve.vctp32(i32)
declare i32 @llvm.start.loop.iterations.i32(i32)
declare i32 @llvm.loop.decrement.reg.i32.i32.i32(i32, i32)
...
---
name: test
alignment: 16
tracksRegLiveness: true
registers: []
liveins:
- { reg: '$r0', virtual-reg: '' }
- { reg: '$r1', virtual-reg: '' }
- { reg: '$r2', virtual-reg: '' }
frameInfo:
stackSize: 8
offsetAdjustment: 0
maxAlignment: 4
fixedStack: []
stack:
- { id: 0, name: '', type: spill-slot, offset: -4, size: 4, alignment: 4,
stack-id: default, callee-saved-register: '$lr', callee-saved-restored: false,
debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
- { id: 1, name: '', type: spill-slot, offset: -8, size: 4, alignment: 4,
stack-id: default, callee-saved-register: '$r7', callee-saved-restored: true,
debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
callSites: []
constants:
- id: 0
value: '<4 x i32> <i32 0, i32 1, i32 2, i32 3>'
alignment: 16
isTargetSpecific: false
machineFunctionInfo: {}
body: |
; CHECK-LABEL: name: test
; CHECK: bb.0.entry:
; CHECK: successors: %bb.1(0x80000000)
; CHECK: liveins: $lr, $r0, $r1, $r2
; CHECK: frame-setup tPUSH 14 /* CC::al */, $noreg, killed $lr, implicit-def $sp, implicit $sp
; CHECK: frame-setup CFI_INSTRUCTION def_cfa_offset 8
; CHECK: frame-setup CFI_INSTRUCTION offset $lr, -4
; CHECK: frame-setup CFI_INSTRUCTION offset $r7, -8
; CHECK: dead $r7 = frame-setup tMOVr $sp, 14 /* CC::al */, $noreg
; CHECK: frame-setup CFI_INSTRUCTION def_cfa_register $r7
; CHECK: tCMPi8 renamable $r2, 0, 14 /* CC::al */, $noreg, implicit-def $cpsr
; CHECK: t2IT 0, 8, implicit-def $itstate
; CHECK: frame-destroy tPOP_RET 0 /* CC::eq */, killed $cpsr, def $r7, def $pc, implicit killed $itstate
; CHECK: bb.1.vector.ph:
; CHECK: successors: %bb.2(0x80000000)
; CHECK: liveins: $r0, $r1, $r2
; CHECK: renamable $q2 = MVE_VMOVimmi32 4, 0, $noreg, $noreg, undef renamable $q2
; CHECK: renamable $r3 = tLEApcrel %const.0, 14 /* CC::al */, $noreg
; CHECK: renamable $q0 = MVE_VLDRWU32 killed renamable $r3, 0, 0, $noreg, $noreg :: (load (s128) from constant-pool)
; CHECK: renamable $r3, dead $cpsr = tLSRri renamable $r2, 1, 14 /* CC::al */, $noreg
; CHECK: renamable $q1 = MVE_VDUP32 killed renamable $r3, 0, $noreg, $noreg, undef renamable $q1
; CHECK: $lr = MVE_DLSTP_32 killed renamable $r2
; CHECK: bb.2.vector.body:
; CHECK: successors: %bb.2(0x7c000000), %bb.3(0x04000000)
; CHECK: liveins: $lr, $q0, $q1, $q2, $r0, $r1
; CHECK: MVE_VPTv4u32 4, renamable $q1, renamable $q0, 8, implicit-def $vpr
; CHECK: renamable $r1, renamable $q3 = MVE_VLDRWU32_post killed renamable $r1, 16, 1, renamable $vpr, $noreg :: (load (s128) from %ir.lsr.iv35, align 4)
; CHECK: renamable $r0 = MVE_VSTRWU32_post killed renamable $q3, killed renamable $r0, 16, 1, killed renamable $vpr, $noreg :: (store (s128) into %ir.lsr.iv12, align 4)
; CHECK: renamable $q0 = MVE_VADDi32 killed renamable $q0, renamable $q2, 0, $noreg, $noreg, undef renamable $q0
; CHECK: $lr = MVE_LETP killed renamable $lr, %bb.2
; CHECK: bb.3.for.cond.cleanup:
; CHECK: frame-destroy tPOP_RET 14 /* CC::al */, $noreg, def $r7, def $pc
; CHECK: bb.4 (align 16):
; CHECK: CONSTPOOL_ENTRY 0, %const.0, 16
bb.0.entry:
successors: %bb.1(0x80000000)
liveins: $r0, $r1, $r2, $lr
frame-setup tPUSH 14 /* CC::al */, $noreg, killed $lr, implicit-def $sp, implicit $sp
frame-setup CFI_INSTRUCTION def_cfa_offset 8
frame-setup CFI_INSTRUCTION offset $lr, -4
frame-setup CFI_INSTRUCTION offset $r7, -8
$r7 = frame-setup tMOVr $sp, 14 /* CC::al */, $noreg
frame-setup CFI_INSTRUCTION def_cfa_register $r7
tCMPi8 renamable $r2, 0, 14 /* CC::al */, $noreg, implicit-def $cpsr
t2IT 0, 8, implicit-def $itstate
frame-destroy tPOP_RET 0 /* CC::eq */, killed $cpsr, def $r7, def $pc, implicit killed $itstate
bb.1.vector.ph:
successors: %bb.2(0x80000000)
liveins: $r0, $r1, $r2, $lr
renamable $r3, dead $cpsr = tADDi3 renamable $r2, 3, 14 /* CC::al */, $noreg
renamable $q2 = MVE_VMOVimmi32 4, 0, $noreg, $noreg, undef renamable $q2
renamable $r3 = t2BICri killed renamable $r3, 3, 14 /* CC::al */, $noreg, $noreg
renamable $r12 = t2SUBri killed renamable $r3, 4, 14 /* CC::al */, $noreg, $noreg
renamable $r3, dead $cpsr = tMOVi8 1, 14 /* CC::al */, $noreg
renamable $lr = nuw nsw t2ADDrs killed renamable $r3, killed renamable $r12, 19, 14 /* CC::al */, $noreg, $noreg
renamable $r3 = tLEApcrel %const.0, 14 /* CC::al */, $noreg
renamable $q0 = MVE_VLDRWU32 killed renamable $r3, 0, 0, $noreg, $noreg :: (load (s128) from constant-pool)
renamable $r3, dead $cpsr = tLSRri renamable $r2, 1, 14 /* CC::al */, $noreg
renamable $q1 = MVE_VDUP32 killed renamable $r3, 0, $noreg, $noreg, undef renamable $q1
$lr = t2DoLoopStart renamable $lr
bb.2.vector.body:
successors: %bb.2(0x7c000000), %bb.3(0x04000000)
liveins: $lr, $q0, $q1, $q2, $r0, $r1, $r2
renamable $vpr = MVE_VCTP32 renamable $r2, 0, $noreg, $noreg
renamable $r2, dead $cpsr = tSUBi8 killed renamable $r2, 4, 14 /* CC::al */, $noreg
MVE_VPST 2, implicit $vpr
renamable $vpr = MVE_VCMPu32 renamable $q1, renamable $q0, 8, 1, killed renamable $vpr, $noreg
renamable $r1, renamable $q3 = MVE_VLDRWU32_post killed renamable $r1, 16, 1, renamable $vpr, $noreg :: (load (s128) from %ir.lsr.iv35, align 4)
renamable $r0 = MVE_VSTRWU32_post killed renamable $q3, killed renamable $r0, 16, 1, killed renamable $vpr, $noreg :: (store (s128) into %ir.lsr.iv12, align 4)
renamable $q0 = MVE_VADDi32 killed renamable $q0, renamable $q2, 0, $noreg, $noreg, undef renamable $q0
renamable $lr = t2LoopDec killed renamable $lr, 1
t2LoopEnd renamable $lr, %bb.2, implicit-def dead $cpsr
tB %bb.3, 14 /* CC::al */, $noreg
bb.3.for.cond.cleanup:
frame-destroy tPOP_RET 14 /* CC::al */, $noreg, def $r7, def $pc
bb.4 (align 16):
CONSTPOOL_ENTRY 0, %const.0, 16
...