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1# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py2# RUN: llc -mtriple=thumbv8.1m.main -mattr=+mve,+lob -run-pass=arm-low-overhead-loops --verify-machineinstrs %s -o - | FileCheck %s3 4# Local use after def, this mov is using r3:5#6# $r2 = tMOVr killed $r3, 14, $noreg7#8# We should optimise away the SUB9 10--- |11 define dso_local void @incorrect_sub_32(ptr noalias nocapture %A, ptr noalias nocapture readonly %B, ptr noalias nocapture readonly %C, i32 %N) local_unnamed_addr #0 {12 entry:13 %cmp8 = icmp sgt i32 %N, 014 %0 = add i32 %N, 315 %1 = lshr i32 %0, 216 %2 = shl nuw i32 %1, 217 %3 = add i32 %2, -418 %4 = lshr i32 %3, 219 %5 = add nuw nsw i32 %4, 120 br i1 %cmp8, label %vector.ph, label %for.cond.cleanup21 22 vector.ph: ; preds = %entry23 %start = call i32 @llvm.start.loop.iterations.i32(i32 %5)24 br label %vector.body25 26 vector.body: ; preds = %vector.body, %vector.ph27 %lsr.iv17 = phi ptr [ %scevgep18, %vector.body ], [ %A, %vector.ph ]28 %lsr.iv14 = phi ptr [ %scevgep15, %vector.body ], [ %C, %vector.ph ]29 %lsr.iv = phi ptr [ %scevgep, %vector.body ], [ %B, %vector.ph ]30 %6 = phi i32 [ %start, %vector.ph ], [ %11, %vector.body ]31 %7 = phi i32 [ %N, %vector.ph ], [ %9, %vector.body ]32 %lsr.iv13 = bitcast ptr %lsr.iv to ptr33 %lsr.iv1416 = bitcast ptr %lsr.iv14 to ptr34 %lsr.iv1719 = bitcast ptr %lsr.iv17 to ptr35 %8 = call <4 x i1> @llvm.arm.mve.vctp32(i32 %7)36 %9 = sub i32 %7, 537 %wide.masked.load = call <4 x i32> @llvm.masked.load.v4i32.p0(ptr %lsr.iv13, i32 4, <4 x i1> %8, <4 x i32> undef)38 %wide.masked.load12 = call <4 x i32> @llvm.masked.load.v4i32.p0(ptr %lsr.iv1416, i32 4, <4 x i1> %8, <4 x i32> undef)39 %10 = add nsw <4 x i32> %wide.masked.load12, %wide.masked.load40 call void @llvm.masked.store.v4i32.p0(<4 x i32> %10, ptr %lsr.iv1719, i32 4, <4 x i1> %8)41 %scevgep = getelementptr i32, ptr %lsr.iv, i32 442 %scevgep15 = getelementptr i32, ptr %lsr.iv14, i32 443 %scevgep18 = getelementptr i32, ptr %lsr.iv17, i32 444 %11 = call i32 @llvm.loop.decrement.reg.i32.i32.i32(i32 %6, i32 1)45 %12 = icmp ne i32 %11, 046 br i1 %12, label %vector.body, label %for.cond.cleanup47 48 for.cond.cleanup: ; preds = %vector.body, %entry49 ret void50 }51 declare i32 @llvm.start.loop.iterations.i32(i32)52 declare <4 x i1> @llvm.arm.mve.vctp32(i32)53 declare i32 @llvm.loop.decrement.reg.i32.i32.i32(i32, i32)54 declare <4 x i32> @llvm.masked.load.v4i32.p0(ptr, i32 immarg, <4 x i1>, <4 x i32>)55 declare void @llvm.masked.store.v4i32.p0(<4 x i32>, ptr, i32 immarg, <4 x i1>)56 57...58---59name: incorrect_sub_3260alignment: 261exposesReturnsTwice: false62legalized: false63regBankSelected: false64selected: false65failedISel: false66tracksRegLiveness: true67hasWinCFI: false68registers: []69liveins:70 - { reg: '$r0', virtual-reg: '' }71 - { reg: '$r1', virtual-reg: '' }72 - { reg: '$r2', virtual-reg: '' }73 - { reg: '$r3', virtual-reg: '' }74frameInfo:75 isFrameAddressTaken: false76 isReturnAddressTaken: false77 hasStackMap: false78 hasPatchPoint: false79 stackSize: 880 offsetAdjustment: 081 maxAlignment: 482 adjustsStack: false83 hasCalls: false84 stackProtector: ''85 maxCallFrameSize: 086 cvBytesOfCalleeSavedRegisters: 087 hasOpaqueSPAdjustment: false88 hasVAStart: false89 hasMustTailInVarArgFunc: false90 localFrameSize: 091 savePoint: []92 restorePoint: []93fixedStack: []94stack:95 - { id: 0, name: '', type: spill-slot, offset: -4, size: 4, alignment: 4,96 stack-id: default, callee-saved-register: '$lr', callee-saved-restored: false,97 debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }98 - { id: 1, name: '', type: spill-slot, offset: -8, size: 4, alignment: 4,99 stack-id: default, callee-saved-register: '$r7', callee-saved-restored: true,100 debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }101callSites: []102constants: []103machineFunctionInfo: {}104body: |105 ; CHECK-LABEL: name: incorrect_sub_32106 ; CHECK: bb.0.entry:107 ; CHECK-NEXT: successors: %bb.1(0x80000000)108 ; CHECK-NEXT: liveins: $lr, $r0, $r1, $r2, $r3, $r7109 ; CHECK-NEXT: {{ $}}110 ; CHECK-NEXT: frame-setup tPUSH 14 /* CC::al */, $noreg, killed $r7, killed $lr, implicit-def $sp, implicit $sp111 ; CHECK-NEXT: frame-setup CFI_INSTRUCTION def_cfa_offset 8112 ; CHECK-NEXT: frame-setup CFI_INSTRUCTION offset $lr, -4113 ; CHECK-NEXT: frame-setup CFI_INSTRUCTION offset $r7, -8114 ; CHECK-NEXT: tCMPi8 renamable $r3, 1, 14 /* CC::al */, $noreg, implicit-def $cpsr115 ; CHECK-NEXT: t2IT 11, 8, implicit-def $itstate116 ; CHECK-NEXT: tPOP_RET 11 /* CC::lt */, killed $cpsr, def $r7, def $pc, implicit killed $itstate117 ; CHECK-NEXT: {{ $}}118 ; CHECK-NEXT: bb.1.vector.ph:119 ; CHECK-NEXT: successors: %bb.2(0x80000000)120 ; CHECK-NEXT: liveins: $r0, $r1, $r2, $r3121 ; CHECK-NEXT: {{ $}}122 ; CHECK-NEXT: renamable $r12 = t2ADDri renamable $r3, 3, 14 /* CC::al */, $noreg, $noreg123 ; CHECK-NEXT: renamable $lr = t2MOVi 1, 14 /* CC::al */, $noreg, $noreg124 ; CHECK-NEXT: renamable $r12 = t2BICri killed renamable $r12, 3, 14 /* CC::al */, $noreg, $noreg125 ; CHECK-NEXT: renamable $r12 = t2SUBri killed renamable $r12, 4, 14 /* CC::al */, $noreg, $noreg126 ; CHECK-NEXT: renamable $lr = nuw nsw t2ADDrs killed renamable $lr, killed renamable $r12, 19, 14 /* CC::al */, $noreg, $noreg127 ; CHECK-NEXT: {{ $}}128 ; CHECK-NEXT: bb.2.vector.body:129 ; CHECK-NEXT: successors: %bb.2(0x7c000000), %bb.3(0x04000000)130 ; CHECK-NEXT: liveins: $lr, $r0, $r1, $r2, $r3131 ; CHECK-NEXT: {{ $}}132 ; CHECK-NEXT: renamable $vpr = MVE_VCTP32 renamable $r3, 0, $noreg, $noreg133 ; CHECK-NEXT: MVE_VPST 4, implicit $vpr134 ; CHECK-NEXT: renamable $r1, renamable $q0 = MVE_VLDRWU32_post killed renamable $r1, 16, 1, renamable $vpr, $noreg :: (load (s128) from %ir.lsr.iv13, align 4)135 ; CHECK-NEXT: renamable $r2, renamable $q1 = MVE_VLDRWU32_post killed renamable $r2, 16, 1, renamable $vpr, $noreg :: (load (s128) from %ir.lsr.iv1416, align 4)136 ; CHECK-NEXT: renamable $r3, dead $cpsr = tSUBi8 killed renamable $r3, 5, 14 /* CC::al */, $noreg137 ; CHECK-NEXT: renamable $q0 = nsw MVE_VADDi32 killed renamable $q1, killed renamable $q0, 0, $noreg, $noreg, undef renamable $q0138 ; CHECK-NEXT: MVE_VPST 8, implicit $vpr139 ; CHECK-NEXT: renamable $r0 = MVE_VSTRWU32_post killed renamable $q0, killed renamable $r0, 16, 1, killed renamable $vpr, $noreg :: (store (s128) into %ir.lsr.iv1719, align 4)140 ; CHECK-NEXT: $lr = t2LEUpdate killed renamable $lr, %bb.2141 ; CHECK-NEXT: {{ $}}142 ; CHECK-NEXT: bb.3.for.cond.cleanup:143 ; CHECK-NEXT: tPOP_RET 14 /* CC::al */, $noreg, def $r7, def $pc144 bb.0.entry:145 successors: %bb.1(0x80000000)146 liveins: $r0, $r1, $r2, $r3, $r7, $lr147 148 frame-setup tPUSH 14, $noreg, killed $r7, killed $lr, implicit-def $sp, implicit $sp149 frame-setup CFI_INSTRUCTION def_cfa_offset 8150 frame-setup CFI_INSTRUCTION offset $lr, -4151 frame-setup CFI_INSTRUCTION offset $r7, -8152 tCMPi8 renamable $r3, 1, 14, $noreg, implicit-def $cpsr153 t2IT 11, 8, implicit-def $itstate154 tPOP_RET 11, killed $cpsr, def $r7, def $pc, implicit killed $itstate155 156 bb.1.vector.ph:157 successors: %bb.2(0x80000000)158 liveins: $r0, $r1, $r2, $r3, $r7, $lr159 160 renamable $r12 = t2ADDri renamable $r3, 3, 14, $noreg, $noreg161 renamable $lr = t2MOVi 1, 14, $noreg, $noreg162 renamable $r12 = t2BICri killed renamable $r12, 3, 14, $noreg, $noreg163 renamable $r12 = t2SUBri killed renamable $r12, 4, 14, $noreg, $noreg164 renamable $lr = nuw nsw t2ADDrs killed renamable $lr, killed renamable $r12, 19, 14, $noreg, $noreg165 $lr = t2DoLoopStart renamable $lr166 167 bb.2.vector.body:168 successors: %bb.2(0x7c000000), %bb.3(0x04000000)169 liveins: $lr, $r0, $r1, $r2, $r3170 171 renamable $vpr = MVE_VCTP32 renamable $r3, 0, $noreg, $noreg172 MVE_VPST 4, implicit $vpr173 renamable $r1, renamable $q0 = MVE_VLDRWU32_post killed renamable $r1, 16, 1, renamable $vpr, $noreg :: (load (s128) from %ir.lsr.iv13, align 4)174 renamable $r2, renamable $q1 = MVE_VLDRWU32_post killed renamable $r2, 16, 1, renamable $vpr, $noreg :: (load (s128) from %ir.lsr.iv1416, align 4)175 renamable $r3, dead $cpsr = tSUBi8 killed renamable $r3, 5, 14, $noreg176 renamable $q0 = nsw MVE_VADDi32 killed renamable $q1, killed renamable $q0, 0, $noreg, $noreg, undef renamable $q0177 MVE_VPST 8, implicit $vpr178 renamable $r0 = MVE_VSTRWU32_post killed renamable $q0, killed renamable $r0, 16, 1, killed renamable $vpr, $noreg :: (store (s128) into %ir.lsr.iv1719, align 4)179 renamable $lr = t2LoopDec killed renamable $lr, 1180 t2LoopEnd renamable $lr, %bb.2, implicit-def dead $cpsr181 tB %bb.3, 14, $noreg182 183 bb.3.for.cond.cleanup:184 tPOP_RET 14, $noreg, def $r7, def $pc185 186...187