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llvm-for-llvmta/test/CodeGen/Thumb2/LowOverheadLoops/wrong-liveout-lsr-shift.mir

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2022-04-25 10:02:23 +02:00
# 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 - --verify-machineinstrs | FileCheck %s
--- |
define dso_local arm_aapcs_vfpcc signext i16 @wrong_liveout_shift(i8* nocapture readonly %b, i8* nocapture readonly %c, i32 %N) {
entry:
%cmp11 = icmp eq i32 %N, 0
%0 = add i32 %N, 7
%1 = lshr i32 %0, 3
%2 = shl nuw i32 %1, 3
%3 = add i32 %2, -8
%4 = lshr i32 %3, 2
%5 = add nuw nsw i32 %4, 1
br i1 %cmp11, label %for.cond.cleanup, label %vector.ph
vector.ph: ; preds = %entry
%start = call i32 @llvm.start.loop.iterations.i32(i32 %5)
%6 = shl i32 %4, 3
%7 = sub i32 %N, %6
br label %vector.body
vector.body: ; preds = %vector.body, %vector.ph
%lsr.iv20 = phi i8* [ %scevgep21, %vector.body ], [ %c, %vector.ph ]
%lsr.iv = phi i8* [ %scevgep, %vector.body ], [ %b, %vector.ph ]
%vec.phi = phi <8 x i16> [ <i16 32767, i16 0, i16 0, i16 0, i16 0, i16 0, i16 0, i16 0>, %vector.ph ], [ %15, %vector.body ]
%8 = phi i32 [ %start, %vector.ph ], [ %16, %vector.body ]
%9 = phi i32 [ %N, %vector.ph ], [ %11, %vector.body ]
%lsr.iv2022 = bitcast i8* %lsr.iv20 to <8 x i8>*
%lsr.iv19 = bitcast i8* %lsr.iv to <8 x i8>*
%10 = call <8 x i1> @llvm.arm.mve.vctp16(i32 %9)
%11 = sub i32 %9, 8
%wide.masked.load = call <8 x i8> @llvm.masked.load.v8i8.p0v8i8(<8 x i8>* %lsr.iv19, i32 1, <8 x i1> %10, <8 x i8> undef)
%12 = zext <8 x i8> %wide.masked.load to <8 x i16>
%wide.masked.load16 = call <8 x i8> @llvm.masked.load.v8i8.p0v8i8(<8 x i8>* %lsr.iv2022, i32 1, <8 x i1> %10, <8 x i8> undef)
%13 = zext <8 x i8> %wide.masked.load16 to <8 x i16>
%14 = mul nuw <8 x i16> %13, %12
%15 = sub <8 x i16> %vec.phi, %14
%scevgep = getelementptr i8, i8* %lsr.iv, i32 8
%scevgep21 = getelementptr i8, i8* %lsr.iv20, i32 8
%16 = call i32 @llvm.loop.decrement.reg.i32.i32.i32(i32 %8, i32 1)
%17 = icmp ne i32 %16, 0
br i1 %17, label %vector.body, label %middle.block
middle.block: ; preds = %vector.body
%vec.phi.lcssa = phi <8 x i16> [ %vec.phi, %vector.body ]
%.lcssa = phi <8 x i16> [ %15, %vector.body ]
%18 = call <8 x i1> @llvm.arm.mve.vctp16(i32 %7)
%19 = select <8 x i1> %18, <8 x i16> %.lcssa, <8 x i16> %vec.phi.lcssa
%20 = call i16 @llvm.vector.reduce.add.v8i16(<8 x i16> %19)
br label %for.cond.cleanup
for.cond.cleanup: ; preds = %middle.block, %entry
%a.0.lcssa = phi i16 [ 32767, %entry ], [ %20, %middle.block ]
ret i16 %a.0.lcssa
}
declare <8 x i8> @llvm.masked.load.v8i8.p0v8i8(<8 x i8>*, i32 immarg, <8 x i1>, <8 x i8>)
declare i16 @llvm.vector.reduce.add.v8i16(<8 x i16>)
declare i32 @llvm.start.loop.iterations.i32(i32)
declare i32 @llvm.loop.decrement.reg.i32.i32.i32(i32, i32)
declare <8 x i1> @llvm.arm.mve.vctp16(i32)
...
---
name: wrong_liveout_shift
alignment: 16
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: '$r2', virtual-reg: '' }
frameInfo:
isFrameAddressTaken: false
isReturnAddressTaken: false
hasStackMap: false
hasPatchPoint: false
stackSize: 8
offsetAdjustment: 0
maxAlignment: 4
adjustsStack: false
hasCalls: false
stackProtector: ''
maxCallFrameSize: 0
cvBytesOfCalleeSavedRegisters: 0
hasOpaqueSPAdjustment: false
hasVAStart: false
hasMustTailInVarArgFunc: false
localFrameSize: 0
savePoint: ''
restorePoint: ''
fixedStack: []
stack:
- { id: 0, name: '', type: spill-slot, offset: -4, size: 4, alignment: 4,
stack-id: default, callee-saved-register: '$lr', callee-saved-restored: true,
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: '<8 x i16> <i16 32767, i16 0, i16 0, i16 0, i16 0, i16 0, i16 0, i16 0>'
alignment: 16
isTargetSpecific: false
machineFunctionInfo: {}
body: |
; CHECK-LABEL: name: wrong_liveout_shift
; CHECK: bb.0.entry:
; CHECK: successors: %bb.1(0x80000000)
; CHECK: liveins: $lr, $r0, $r1, $r2, $r7
; CHECK: tCMPi8 renamable $r2, 0, 14 /* CC::al */, $noreg, implicit-def $cpsr
; CHECK: t2IT 0, 2, implicit-def $itstate
; CHECK: renamable $r0 = t2MOVi16 32767, 0 /* CC::eq */, $cpsr, implicit killed $r0, implicit $itstate
; CHECK: renamable $r0 = tSXTH killed renamable $r0, 0 /* CC::eq */, $cpsr, implicit killed $r0, implicit $itstate
; CHECK: tBX_RET 0 /* CC::eq */, killed $cpsr, implicit $r0, implicit killed $itstate
; CHECK: bb.1.vector.ph:
; CHECK: successors: %bb.2(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: renamable $r3, dead $cpsr = tADDi3 renamable $r2, 7, 14 /* CC::al */, $noreg
; CHECK: renamable $r3 = t2BICri killed renamable $r3, 7, 14 /* CC::al */, $noreg, $noreg
; CHECK: renamable $r12 = t2SUBri killed renamable $r3, 8, 14 /* CC::al */, $noreg, $noreg
; CHECK: renamable $r3, dead $cpsr = tMOVi8 1, 14 /* CC::al */, $noreg
; CHECK: renamable $lr = nuw nsw t2ADDrs killed renamable $r3, renamable $r12, 27, 14 /* CC::al */, $noreg, $noreg
; CHECK: renamable $r3 = tLEApcrel %const.0, 14 /* CC::al */, $noreg
; CHECK: renamable $r12 = t2LSRri killed renamable $r12, 2, 14 /* CC::al */, $noreg, $noreg
; CHECK: renamable $q0 = MVE_VLDRWU32 killed renamable $r3, 0, 0, $noreg :: (load 16 from constant-pool)
; CHECK: renamable $r3 = t2SUBrs renamable $r2, killed renamable $r12, 26, 14 /* CC::al */, $noreg, $noreg
; CHECK: $lr = t2DLS killed renamable $lr
; CHECK: bb.2.vector.body:
; CHECK: successors: %bb.2(0x7c000000), %bb.3(0x04000000)
; CHECK: liveins: $lr, $q0, $r0, $r1, $r2, $r3
; CHECK: renamable $vpr = MVE_VCTP16 renamable $r2, 0, $noreg
; CHECK: $q1 = MVE_VORR killed $q0, killed $q0, 0, $noreg, undef $q1
; CHECK: MVE_VPST 4, implicit $vpr
; CHECK: renamable $r0, renamable $q0 = MVE_VLDRBU16_post killed renamable $r0, 8, 1, renamable $vpr :: (load 8 from %ir.lsr.iv19, align 1)
; CHECK: renamable $r1, renamable $q2 = MVE_VLDRBU16_post killed renamable $r1, 8, 1, killed renamable $vpr :: (load 8 from %ir.lsr.iv2022, align 1)
; CHECK: renamable $r2, dead $cpsr = tSUBi8 killed renamable $r2, 8, 14 /* CC::al */, $noreg
; CHECK: renamable $q0 = nuw MVE_VMULi16 killed renamable $q2, killed renamable $q0, 0, $noreg, undef renamable $q0
; CHECK: renamable $q0 = MVE_VSUBi16 renamable $q1, killed renamable $q0, 0, $noreg, undef renamable $q0
; CHECK: $lr = t2LEUpdate killed renamable $lr, %bb.2
; CHECK: bb.3.middle.block:
; CHECK: liveins: $q0, $q1, $r3
; CHECK: renamable $vpr = MVE_VCTP16 killed renamable $r3, 0, $noreg
; CHECK: renamable $q0 = MVE_VPSEL killed renamable $q0, killed renamable $q1, 0, killed renamable $vpr
; CHECK: renamable $r0 = MVE_VADDVu16no_acc killed renamable $q0, 0, $noreg
; CHECK: $sp = t2LDMIA_UPD $sp, 14 /* CC::al */, $noreg, def $r7, def $lr
; CHECK: renamable $r0 = tSXTH killed renamable $r0, 14 /* CC::al */, $noreg
; CHECK: tBX_RET 14 /* CC::al */, $noreg, implicit killed $r0
; CHECK: bb.4 (align 16):
; CHECK: CONSTPOOL_ENTRY 0, %const.0, 16
bb.0.entry:
successors: %bb.1(0x80000000)
liveins: $r0, $r1, $r2, $lr
tCMPi8 renamable $r2, 0, 14, $noreg, implicit-def $cpsr
t2IT 0, 2, implicit-def $itstate
renamable $r0 = t2MOVi16 32767, 0, $cpsr, implicit killed $r0, implicit $itstate
renamable $r0 = tSXTH killed renamable $r0, 0, $cpsr, implicit killed $r0, implicit $itstate
tBX_RET 0, killed $cpsr, implicit $r0, implicit killed $itstate
bb.1.vector.ph:
successors: %bb.2(0x80000000)
liveins: $r0, $r1, $r2, $lr
frame-setup tPUSH 14, $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, $noreg
frame-setup CFI_INSTRUCTION def_cfa_register $r7
renamable $r3, dead $cpsr = tADDi3 renamable $r2, 7, 14, $noreg
renamable $r3 = t2BICri killed renamable $r3, 7, 14, $noreg, $noreg
renamable $r12 = t2SUBri killed renamable $r3, 8, 14, $noreg, $noreg
renamable $r3, dead $cpsr = tMOVi8 1, 14, $noreg
renamable $lr = nuw nsw t2ADDrs killed renamable $r3, renamable $r12, 27, 14, $noreg, $noreg
renamable $r3 = tLEApcrel %const.0, 14, $noreg
renamable $r12 = t2LSRri killed renamable $r12, 2, 14, $noreg, $noreg
renamable $q0 = MVE_VLDRWU32 killed renamable $r3, 0, 0, $noreg :: (load 16 from constant-pool)
renamable $r3 = t2SUBrs renamable $r2, killed renamable $r12, 26, 14, $noreg, $noreg
$lr = t2DoLoopStart renamable $lr
bb.2.vector.body:
successors: %bb.2(0x7c000000), %bb.3(0x04000000)
liveins: $lr, $q0, $r0, $r1, $r2, $r3
renamable $vpr = MVE_VCTP16 renamable $r2, 0, $noreg
$q1 = MVE_VORR killed $q0, $q0, 0, $noreg, undef $q1
MVE_VPST 4, implicit $vpr
renamable $r0, renamable $q0 = MVE_VLDRBU16_post killed renamable $r0, 8, 1, renamable $vpr :: (load 8 from %ir.lsr.iv19, align 1)
renamable $r1, renamable $q2 = MVE_VLDRBU16_post killed renamable $r1, 8, 1, killed renamable $vpr :: (load 8 from %ir.lsr.iv2022, align 1)
renamable $r2, dead $cpsr = tSUBi8 killed renamable $r2, 8, 14, $noreg
renamable $q0 = nuw MVE_VMULi16 killed renamable $q2, killed renamable $q0, 0, $noreg, undef renamable $q0
renamable $lr = t2LoopDec killed renamable $lr, 1
renamable $q0 = MVE_VSUBi16 renamable $q1, killed renamable $q0, 0, $noreg, undef renamable $q0
t2LoopEnd renamable $lr, %bb.2, implicit-def dead $cpsr
tB %bb.3, 14, $noreg
bb.3.middle.block:
liveins: $q0, $q1, $r3
renamable $vpr = MVE_VCTP16 killed renamable $r3, 0, $noreg
renamable $q0 = MVE_VPSEL killed renamable $q0, killed renamable $q1, 0, killed renamable $vpr
renamable $r0 = MVE_VADDVu16no_acc killed renamable $q0, 0, $noreg
$sp = t2LDMIA_UPD $sp, 14, $noreg, def $r7, def $lr
renamable $r0 = tSXTH killed renamable $r0, 14, $noreg
tBX_RET 14, $noreg, implicit killed $r0
bb.4 (align 16):
CONSTPOOL_ENTRY 0, %const.0, 16
...