move-start-after-def.mir
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# 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 --verify-machineinstrs %s -o - | FileCheck %s
# Test that, though the vctp operand is defined at the end of the block,
# that the correct value is used for the dlstp.
--- |
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
call void @llvm.set.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 [ %5, %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>) #1
declare void @llvm.masked.store.v4i32.p0v4i32(<4 x i32>, <4 x i32>*, i32 immarg, <4 x i1>) #2
declare void @llvm.set.loop.iterations.i32(i32) #3
declare i32 @llvm.loop.decrement.reg.i32.i32.i32(i32, i32) #3
declare <4 x i1> @llvm.arm.mve.vctp32(i32) #4
...
---
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: $r0, $r1, $r2, $r3, $r4, $lr
; CHECK: frame-setup tPUSH 14, $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, $noreg, $noreg
; CHECK: t2CMPrs killed renamable $r12, renamable $r3, 11, 14, $noreg, implicit-def $cpsr
; CHECK: t2IT 0, 8, implicit-def $itstate
; CHECK: tPOP_RET 0, killed $cpsr, def $r4, def $pc, implicit killed $itstate
; CHECK: $r12 = t2MOVr killed $r3, 14, $noreg, $noreg
; CHECK: renamable $r3, dead $cpsr = tMOVi8 0, 14, $noreg
; CHECK: renamable $r12 = t2LSRri killed renamable $r12, 1, 14, $noreg, $noreg
; CHECK: $lr = MVE_DLSTP_32 renamable $r12
; CHECK: bb.1.vector.body:
; CHECK: successors: %bb.1(0x7c000000), %bb.2(0x04000000)
; CHECK: liveins: $lr, $r0, $r1, $r2, $r3, $r12
; CHECK: renamable $r4, dead $cpsr = tADDrr renamable $r1, renamable $r3, 14, $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, $noreg
; CHECK: renamable $r3, dead $cpsr = tADDi8 killed renamable $r3, 4, 14, $noreg
; CHECK: renamable $r12 = t2SUBri killed renamable $r12, 4, 14, $noreg, $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 renamable $lr, %bb.1
; CHECK: bb.2.for.cond.cleanup:
; CHECK: tPOP_RET 14, $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
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 $lr = nuw nsw t2ADDrs killed renamable $lr, killed renamable $r12, 19, 14, $noreg, $noreg
t2DoLoopStart renamable $lr
$r12 = t2MOVr killed $r3, 14, $noreg, $noreg
renamable $r3, dead $cpsr = tMOVi8 0, 14, $noreg
renamable $r12 = t2LSRri killed renamable $r12, 1, 14, $noreg, $noreg
bb.1.vector.body:
successors: %bb.1(0x7c000000), %bb.2(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.1, implicit-def dead $cpsr
tB %bb.2, 14, $noreg
bb.2.for.cond.cleanup:
tPOP_RET 14, $noreg, def $r4, def $pc
...