| # 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 -o - | FileCheck %s |
| --- | |
| define dso_local arm_aapcs_vfpcc void @start_before_elems(i32* noalias nocapture %a, i8* nocapture readonly %b, i8* nocapture readonly %c, i32 %N) local_unnamed_addr #0 { |
| entry: |
| %div = lshr i32 %N, 1 |
| %cmp9 = icmp eq i32 %div, 0 |
| %0 = add nuw i32 %div, 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 |
| %start = call i32 @llvm.start.loop.iterations.i32(i32 %5) |
| br label %vector.body |
| |
| vector.body: ; preds = %vector.body, %vector.ph |
| %lsr.iv = phi i32* [ %scevgep, %vector.body ], [ %a, %vector.ph ] |
| %index = phi i32 [ 0, %vector.ph ], [ %index.next, %vector.body ] |
| %6 = phi i32 [ %start, %vector.ph ], [ %13, %vector.body ] |
| %7 = phi i32 [ %div, %vector.ph ], [ %9, %vector.body ] |
| %lsr.iv1 = bitcast i32* %lsr.iv to <4 x i32>* |
| %8 = call <4 x i1> @llvm.arm.mve.vctp32(i32 %7) |
| %9 = sub i32 %7, 4 |
| %scevgep4 = getelementptr i8, i8* %b, i32 %index |
| %scevgep45 = bitcast i8* %scevgep4 to <4 x i8>* |
| %wide.masked.load = call <4 x i8> @llvm.masked.load.v4i8.p0v4i8(<4 x i8>* %scevgep45, i32 1, <4 x i1> %8, <4 x i8> undef) |
| %10 = zext <4 x i8> %wide.masked.load to <4 x i32> |
| %scevgep2 = getelementptr i8, i8* %c, i32 %index |
| %scevgep23 = bitcast i8* %scevgep2 to <4 x i8>* |
| %wide.masked.load13 = call <4 x i8> @llvm.masked.load.v4i8.p0v4i8(<4 x i8>* %scevgep23, i32 1, <4 x i1> %8, <4 x i8> undef) |
| %11 = zext <4 x i8> %wide.masked.load13 to <4 x i32> |
| %12 = mul nuw nsw <4 x i32> %11, %10 |
| call void @llvm.masked.store.v4i32.p0v4i32(<4 x i32> %12, <4 x i32>* %lsr.iv1, i32 4, <4 x i1> %8) |
| %index.next = add i32 %index, 4 |
| %scevgep = getelementptr i32, i32* %lsr.iv, i32 4 |
| %13 = call i32 @llvm.loop.decrement.reg.i32.i32.i32(i32 %6, i32 1) |
| %14 = icmp ne i32 %13, 0 |
| br i1 %14, label %vector.body, label %for.cond.cleanup |
| |
| for.cond.cleanup: ; preds = %vector.body, %entry |
| ret void |
| } |
| declare <4 x i8> @llvm.masked.load.v4i8.p0v4i8(<4 x i8>*, i32 immarg, <4 x i1>, <4 x i8>) |
| declare void @llvm.masked.store.v4i32.p0v4i32(<4 x i32>, <4 x i32>*, i32 immarg, <4 x i1>) |
| declare i32 @llvm.start.loop.iterations.i32(i32) |
| declare i32 @llvm.loop.decrement.reg.i32.i32.i32(i32, i32) |
| declare <4 x i1> @llvm.arm.mve.vctp32(i32) |
| ... |
| --- |
| name: start_before_elems |
| alignment: 2 |
| exposesReturnsTwice: false |
| legalized: false |
| regBankSelected: false |
| selected: false |
| failedISel: false |
| tracksRegLiveness: true |
| hasWinCFI: false |
| registers: [] |
| liveins: |
| - { reg: '$r0', virtual-reg: '' } |
| - { reg: '$r1', virtual-reg: '' } |
| - { reg: '$r2', virtual-reg: '' } |
| - { reg: '$r3', virtual-reg: '' } |
| frameInfo: |
| isFrameAddressTaken: false |
| isReturnAddressTaken: false |
| hasStackMap: false |
| hasPatchPoint: false |
| stackSize: 8 |
| offsetAdjustment: 0 |
| maxAlignment: 4 |
| adjustsStack: false |
| hasCalls: false |
| stackProtector: '' |
| maxCallFrameSize: 0 |
| cvBytesOfCalleeSavedRegisters: 0 |
| hasOpaqueSPAdjustment: false |
| hasVAStart: false |
| hasMustTailInVarArgFunc: false |
| localFrameSize: 0 |
| savePoint: '' |
| restorePoint: '' |
| fixedStack: [] |
| stack: |
| - { id: 0, name: '', type: spill-slot, offset: -4, size: 4, alignment: 4, |
| stack-id: default, callee-saved-register: '$lr', callee-saved-restored: false, |
| debug-info-variable: '', debug-info-expression: '', debug-info-location: '' } |
| - { id: 1, name: '', type: spill-slot, offset: -8, size: 4, alignment: 4, |
| stack-id: default, callee-saved-register: '$r4', callee-saved-restored: true, |
| debug-info-variable: '', debug-info-expression: '', debug-info-location: '' } |
| callSites: [] |
| constants: [] |
| machineFunctionInfo: {} |
| body: | |
| ; CHECK-LABEL: name: start_before_elems |
| ; CHECK: bb.0.entry: |
| ; CHECK: successors: %bb.1(0x80000000) |
| ; CHECK: liveins: $lr, $r0, $r1, $r2, $r3, $r4 |
| ; CHECK: frame-setup tPUSH 14 /* CC::al */, $noreg, killed $r4, 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 $r4, -8 |
| ; CHECK: renamable $r12 = t2MOVi 0, 14 /* CC::al */, $noreg, $noreg |
| ; CHECK: t2CMPrs killed renamable $r12, renamable $r3, 11, 14 /* CC::al */, $noreg, implicit-def $cpsr |
| ; CHECK: t2IT 0, 8, implicit-def $itstate |
| ; CHECK: tPOP_RET 0 /* CC::eq */, killed $cpsr, def $r4, def $pc, implicit killed $itstate |
| ; CHECK: bb.1.vector.ph: |
| ; CHECK: successors: %bb.2(0x80000000) |
| ; CHECK: liveins: $r0, $r1, $r2, $r3 |
| ; CHECK: renamable $r12 = t2LSRri killed renamable $r3, 1, 14 /* CC::al */, $noreg, $noreg |
| ; CHECK: renamable $r3, dead $cpsr = tMOVi8 0, 14 /* CC::al */, $noreg |
| ; CHECK: $lr = MVE_DLSTP_32 killed renamable $r12 |
| ; CHECK: bb.2.vector.body: |
| ; CHECK: successors: %bb.2(0x7c000000), %bb.3(0x04000000) |
| ; CHECK: liveins: $lr, $r0, $r1, $r2, $r3 |
| ; CHECK: renamable $r4, dead $cpsr = tADDrr renamable $r1, renamable $r3, 14 /* CC::al */, $noreg |
| ; CHECK: renamable $q0 = MVE_VLDRBU32 killed renamable $r4, 0, 0, $noreg :: (load 4 from %ir.scevgep45, align 1) |
| ; CHECK: renamable $r4, dead $cpsr = tADDrr renamable $r2, renamable $r3, 14 /* CC::al */, $noreg |
| ; CHECK: renamable $r3, dead $cpsr = tADDi8 killed renamable $r3, 4, 14 /* CC::al */, $noreg |
| ; CHECK: renamable $q1 = MVE_VLDRBU32 killed renamable $r4, 0, 0, $noreg :: (load 4 from %ir.scevgep23, align 1) |
| ; CHECK: renamable $q0 = nuw nsw MVE_VMULi32 killed renamable $q1, killed renamable $q0, 0, $noreg, undef renamable $q0 |
| ; CHECK: renamable $r0 = MVE_VSTRWU32_post killed renamable $q0, killed renamable $r0, 16, 0, killed $noreg :: (store 16 into %ir.lsr.iv1, align 4) |
| ; CHECK: $lr = MVE_LETP killed renamable $lr, %bb.2 |
| ; CHECK: bb.3.for.cond.cleanup: |
| ; CHECK: tPOP_RET 14 /* CC::al */, $noreg, def $r4, def $pc |
| bb.0.entry: |
| successors: %bb.1(0x80000000) |
| liveins: $r0, $r1, $r2, $r3, $r4, $lr |
| |
| frame-setup tPUSH 14, $noreg, killed $r4, 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 $r4, -8 |
| renamable $r12 = t2MOVi 0, 14, $noreg, $noreg |
| t2CMPrs killed renamable $r12, renamable $r3, 11, 14, $noreg, implicit-def $cpsr |
| t2IT 0, 8, implicit-def $itstate |
| tPOP_RET 0, killed $cpsr, def $r4, def $pc, implicit killed $itstate |
| |
| bb.1.vector.ph: |
| successors: %bb.2(0x80000000) |
| liveins: $r0, $r1, $r2, $r3, $r4, $lr |
| |
| renamable $r12 = t2MOVi 3, 14, $noreg, $noreg |
| renamable $lr = t2MOVi 1, 14, $noreg, $noreg |
| renamable $r12 = nuw t2ADDrs killed renamable $r12, renamable $r3, 11, 14, $noreg, $noreg |
| renamable $r12 = t2BICri killed renamable $r12, 3, 14, $noreg, $noreg |
| renamable $r12 = t2SUBri killed renamable $r12, 4, 14, $noreg, $noreg |
| renamable $r5 = nuw nsw t2ADDrs killed renamable $lr, killed renamable $r12, 19, 14, $noreg, $noreg |
| renamable $r12 = t2LSRri killed renamable $r3, 1, 14, $noreg, $noreg |
| renamable $r3, dead $cpsr = tMOVi8 0, 14, $noreg |
| $lr = t2DoLoopStart renamable $r5 |
| $lr = tMOVr killed $r5, 14, $noreg |
| |
| bb.2.vector.body: |
| successors: %bb.2(0x7c000000), %bb.3(0x04000000) |
| liveins: $lr, $r0, $r1, $r2, $r3, $r12 |
| |
| renamable $r4, dead $cpsr = tADDrr renamable $r1, renamable $r3, 14, $noreg |
| renamable $vpr = MVE_VCTP32 renamable $r12, 0, $noreg |
| MVE_VPST 8, implicit $vpr |
| renamable $q0 = MVE_VLDRBU32 killed renamable $r4, 0, 1, renamable $vpr :: (load 4 from %ir.scevgep45, align 1) |
| renamable $r4, dead $cpsr = tADDrr renamable $r2, renamable $r3, 14, $noreg |
| renamable $r3, dead $cpsr = tADDi8 killed renamable $r3, 4, 14, $noreg |
| renamable $r12 = t2SUBri killed renamable $r12, 4, 14, $noreg, $noreg |
| MVE_VPST 8, implicit $vpr |
| renamable $q1 = MVE_VLDRBU32 killed renamable $r4, 0, 1, renamable $vpr :: (load 4 from %ir.scevgep23, align 1) |
| renamable $q0 = nuw nsw MVE_VMULi32 killed renamable $q1, killed renamable $q0, 0, $noreg, undef renamable $q0 |
| MVE_VPST 8, implicit $vpr |
| renamable $r0 = MVE_VSTRWU32_post killed renamable $q0, killed renamable $r0, 16, 1, killed renamable $vpr :: (store 16 into %ir.lsr.iv1, align 4) |
| renamable $lr = t2LoopDec killed renamable $lr, 1 |
| t2LoopEnd renamable $lr, %bb.2, implicit-def dead $cpsr |
| tB %bb.3, 14, $noreg |
| |
| bb.3.for.cond.cleanup: |
| tPOP_RET 14, $noreg, def $r4, def $pc |
| |
| ... |