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llvm-mirror/test/CodeGen/Thumb2/LowOverheadLoops/lstp-insertion-position.mir
David Green 0773b05cfa [ARM] Alter t2DoLoopStart to define lr
This changes the definition of t2DoLoopStart from
t2DoLoopStart rGPR
to
GPRlr = t2DoLoopStart rGPR

This will hopefully mean that low overhead loops are more tied together,
and we can more reliably generate loops without reverting or being at
the whims of the register allocator.

This is a fairly simple change in itself, but leads to a number of other
required alterations.

 - The hardware loop pass, if UsePhi is set, now generates loops of the
   form:
       %start = llvm.start.loop.iterations(%N)
     loop:
       %p = phi [%start], [%dec]
       %dec = llvm.loop.decrement.reg(%p, 1)
       %c = icmp ne %dec, 0
       br %c, loop, exit
 - For this a new llvm.start.loop.iterations intrinsic was added, identical
   to llvm.set.loop.iterations but produces a value as seen above, gluing
   the loop together more through def-use chains.
 - This new instrinsic conceptually produces the same output as input,
   which is taught to SCEV so that the checks in MVETailPredication are not
   affected.
 - Some minor changes are needed to the ARMLowOverheadLoop pass, but it has
   been left mostly as before. We should now more reliably be able to tell
   that the t2DoLoopStart is correct without having to prove it, but
   t2WhileLoopStart and tail-predicated loops will remain the same.
 - And all the tests have been updated. There are a lot of them!

This patch on it's own might cause more trouble that it helps, with more
tail-predicated loops being reverted, but some additional patches can
hopefully improve upon that to get to something that is better overall.

Differential Revision: https://reviews.llvm.org/D89881
2020-11-10 15:57:58 +00:00

376 lines
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# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple=thumbv8.1m.main -mattr=+mve.fp -run-pass=arm-low-overhead-loops %s -o - | FileCheck %s
--- |
define dso_local arm_aapcs_vfpcc float @insert_after_vdup_1(float* nocapture readonly %a, float* nocapture readonly %b, float %init, i32 %N) {
entry:
%cmp8.not = 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 %cmp8.not, label %for.cond.cleanup, label %vector.ph
vector.ph: ; preds = %entry
%6 = insertelement <4 x float> <float undef, float 0.000000e+00, float 0.000000e+00, float 0.000000e+00>, float %init, i32 0
%start = call i32 @llvm.start.loop.iterations.i32(i32 %5)
br label %vector.body
vector.body: ; preds = %vector.body, %vector.ph
%lsr.iv13 = phi float* [ %scevgep14, %vector.body ], [ %b, %vector.ph ]
%lsr.iv = phi float* [ %scevgep, %vector.body ], [ %a, %vector.ph ]
%vec.phi = phi <4 x float> [ %6, %vector.ph ], [ %13, %vector.body ]
%7 = phi i32 [ %start, %vector.ph ], [ %14, %vector.body ]
%8 = phi i32 [ %N, %vector.ph ], [ %10, %vector.body ]
%lsr.iv12 = bitcast float* %lsr.iv to <4 x float>*
%lsr.iv1315 = bitcast float* %lsr.iv13 to <4 x float>*
%9 = call <4 x i1> @llvm.arm.mve.vctp32(i32 %8)
%10 = sub i32 %8, 4
%wide.masked.load = call <4 x float> @llvm.masked.load.v4f32.p0v4f32(<4 x float>* %lsr.iv12, i32 4, <4 x i1> %9, <4 x float> undef)
%wide.masked.load11 = call <4 x float> @llvm.masked.load.v4f32.p0v4f32(<4 x float>* %lsr.iv1315, i32 4, <4 x i1> %9, <4 x float> undef)
%11 = fmul fast <4 x float> %wide.masked.load11, %wide.masked.load
%12 = fadd fast <4 x float> %11, %vec.phi
%13 = select <4 x i1> %9, <4 x float> %12, <4 x float> %vec.phi
%scevgep = getelementptr float, float* %lsr.iv, i32 4
%scevgep14 = getelementptr float, float* %lsr.iv13, i32 4
%14 = call i32 @llvm.loop.decrement.reg.i32(i32 %7, i32 1)
%15 = icmp ne i32 %14, 0
br i1 %15, label %vector.body, label %middle.block
middle.block: ; preds = %vector.body
%16 = call fast float @llvm.vector.reduce.fadd.f32.v4f32(float 0.000000e+00, <4 x float> %13)
br label %for.cond.cleanup
for.cond.cleanup: ; preds = %middle.block, %entry
%res.0.lcssa = phi float [ %init, %entry ], [ %16, %middle.block ]
ret float %res.0.lcssa
}
; Function Attrs: norecurse nounwind readonly
define dso_local arm_aapcs_vfpcc float @insert_after_vdup_2(float* nocapture readonly %a, float* nocapture readonly %b, float %init, i32 %N) local_unnamed_addr #0 {
entry:
%shr = lshr i32 %N, 2
%cmp9.not = icmp eq i32 %shr, 0
%0 = add nuw nsw i32 %shr, 3
%1 = lshr i32 %0, 2
%2 = shl nuw nsw i32 %1, 2
%3 = add nsw i32 %2, -4
%4 = lshr i32 %3, 2
%5 = add nuw nsw i32 %4, 1
br i1 %cmp9.not, label %for.cond.cleanup, label %vector.ph
vector.ph: ; preds = %entry
%6 = insertelement <4 x float> <float undef, float 0.000000e+00, float 0.000000e+00, float 0.000000e+00>, float %init, i32 0
%start = call i32 @llvm.start.loop.iterations.i32(i32 %5)
br label %vector.body
vector.body: ; preds = %vector.body, %vector.ph
%lsr.iv14 = phi float* [ %scevgep15, %vector.body ], [ %b, %vector.ph ]
%lsr.iv = phi float* [ %scevgep, %vector.body ], [ %a, %vector.ph ]
%vec.phi = phi <4 x float> [ %6, %vector.ph ], [ %13, %vector.body ]
%7 = phi i32 [ %start, %vector.ph ], [ %14, %vector.body ]
%8 = phi i32 [ %shr, %vector.ph ], [ %10, %vector.body ]
%lsr.iv13 = bitcast float* %lsr.iv to <4 x float>*
%lsr.iv1416 = bitcast float* %lsr.iv14 to <4 x float>*
%9 = call <4 x i1> @llvm.arm.mve.vctp32(i32 %8)
%10 = sub i32 %8, 4
%wide.masked.load = call <4 x float> @llvm.masked.load.v4f32.p0v4f32(<4 x float>* %lsr.iv13, i32 4, <4 x i1> %9, <4 x float> undef)
%wide.masked.load12 = call <4 x float> @llvm.masked.load.v4f32.p0v4f32(<4 x float>* %lsr.iv1416, i32 4, <4 x i1> %9, <4 x float> undef)
%11 = fmul fast <4 x float> %wide.masked.load12, %wide.masked.load
%12 = fadd fast <4 x float> %11, %vec.phi
%13 = select <4 x i1> %9, <4 x float> %12, <4 x float> %vec.phi
%scevgep = getelementptr float, float* %lsr.iv, i32 4
%scevgep15 = getelementptr float, float* %lsr.iv14, i32 4
%14 = call i32 @llvm.loop.decrement.reg.i32(i32 %7, i32 1)
%15 = icmp ne i32 %14, 0
br i1 %15, label %vector.body, label %middle.block
middle.block: ; preds = %vector.body
%16 = call fast float @llvm.vector.reduce.fadd.f32.v4f32(float 0.000000e+00, <4 x float> %13)
br label %for.cond.cleanup
for.cond.cleanup: ; preds = %middle.block, %entry
%res.0.lcssa = phi float [ %init, %entry ], [ %16, %middle.block ]
ret float %res.0.lcssa
}
declare <4 x i1> @llvm.get.active.lane.mask.v4i1.i32(i32, i32)
declare <4 x float> @llvm.masked.load.v4f32.p0v4f32(<4 x float>*, i32 immarg, <4 x i1>, <4 x float>)
declare float @llvm.vector.reduce.fadd.f32.v4f32(float, <4 x float>)
declare i32 @llvm.start.loop.iterations.i32(i32)
declare i32 @llvm.loop.decrement.reg.i32(i32, i32)
declare <4 x i1> @llvm.arm.mve.vctp32(i32)
...
---
name: insert_after_vdup_1
alignment: 4
tracksRegLiveness: true
registers: []
liveins:
- { reg: '$r0', virtual-reg: '' }
- { reg: '$r1', virtual-reg: '' }
- { reg: '$s0', virtual-reg: '' }
- { reg: '$r2', virtual-reg: '' }
frameInfo:
stackSize: 8
offsetAdjustment: 0
maxAlignment: 4
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: 'float 0.000000e+00'
alignment: 4
isTargetSpecific: false
machineFunctionInfo: {}
body: |
; CHECK-LABEL: name: insert_after_vdup_1
; CHECK: bb.0.entry:
; CHECK: successors: %bb.1(0x80000000)
; CHECK: liveins: $lr, $r0, $r1, $r2, $r7, $s0
; CHECK: tCMPi8 renamable $r2, 0, 14 /* CC::al */, $noreg, implicit-def $cpsr
; CHECK: t2IT 0, 8, implicit-def $itstate
; CHECK: tBX_RET 0 /* CC::eq */, killed $cpsr, implicit $s0, implicit killed $itstate
; CHECK: bb.1.vector.ph:
; CHECK: successors: %bb.2(0x80000000)
; CHECK: liveins: $lr, $r0, $r1, $r2, $s0
; 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, 3, 14 /* CC::al */, $noreg
; CHECK: renamable $r3 = t2BICri killed renamable $r3, 3, 14 /* CC::al */, $noreg, $noreg
; CHECK: renamable $r12 = t2SUBri killed renamable $r3, 4, 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, killed renamable $r12, 19, 14 /* CC::al */, $noreg, $noreg
; CHECK: renamable $r3 = tLDRpci %const.0, 14 /* CC::al */, $noreg :: (load 4 from constant-pool)
; CHECK: $lr = t2DLS killed renamable $lr
; CHECK: renamable $q1 = MVE_VDUP32 killed renamable $r3, 0, $noreg, undef renamable $q1
; CHECK: $s4 = VMOVS killed $s0, 14 /* CC::al */, $noreg, implicit killed $q1, implicit-def $q1
; CHECK: bb.2.vector.body:
; CHECK: successors: %bb.2(0x7c000000), %bb.3(0x04000000)
; CHECK: liveins: $lr, $q1, $r0, $r1, $r2
; CHECK: renamable $vpr = MVE_VCTP32 renamable $r2, 0, $noreg
; CHECK: renamable $r2, dead $cpsr = tSUBi8 killed renamable $r2, 4, 14 /* CC::al */, $noreg
; CHECK: MVE_VPST 2, implicit $vpr
; CHECK: renamable $r0, renamable $q0 = MVE_VLDRWU32_post killed renamable $r0, 16, 1, renamable $vpr :: (load 16 from %ir.lsr.iv12, align 4)
; CHECK: renamable $r1, renamable $q2 = MVE_VLDRWU32_post killed renamable $r1, 16, 1, renamable $vpr :: (load 16 from %ir.lsr.iv1315, align 4)
; CHECK: renamable $q1 = MVE_VFMAf32 killed renamable $q1, killed renamable $q2, killed renamable $q0, 1, killed renamable $vpr
; CHECK: $lr = t2LEUpdate killed renamable $lr, %bb.2
; CHECK: bb.3.middle.block:
; CHECK: liveins: $q1
; CHECK: renamable $s0 = nnan ninf nsz arcp contract afn reassoc VADDS renamable $s6, renamable $s7, 14 /* CC::al */, $noreg
; CHECK: renamable $s2 = nnan ninf nsz arcp contract afn reassoc VADDS killed renamable $s4, killed renamable $s5, 14 /* CC::al */, $noreg, implicit killed $q1
; CHECK: renamable $s0 = nnan ninf nsz arcp contract afn reassoc VADDS killed renamable $s2, killed renamable $s0, 14 /* CC::al */, $noreg
; CHECK: $sp = frame-destroy t2LDMIA_UPD $sp, 14 /* CC::al */, $noreg, def $r7, def $lr
; CHECK: tBX_RET 14 /* CC::al */, $noreg, implicit killed $s0
; CHECK: bb.4 (align 4):
; CHECK: CONSTPOOL_ENTRY 0, %const.0, 4
bb.0.entry:
successors: %bb.1(0x80000000)
liveins: $r0, $r1, $r2, $s0, $lr
tCMPi8 renamable $r2, 0, 14 /* CC::al */, $noreg, implicit-def $cpsr
t2IT 0, 8, implicit-def $itstate
tBX_RET 0 /* CC::eq */, killed $cpsr, implicit $s0, implicit killed $itstate
bb.1.vector.ph:
successors: %bb.2(0x80000000)
liveins: $r0, $r1, $r2, $s0, $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
renamable $r3, dead $cpsr = tADDi3 renamable $r2, 3, 14 /* CC::al */, $noreg
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 = tLDRpci %const.0, 14 /* CC::al */, $noreg :: (load 4 from constant-pool)
$lr = t2DoLoopStart renamable $lr
renamable $q1 = MVE_VDUP32 killed renamable $r3, 0, $noreg, undef renamable $q1
$s4 = VMOVS killed $s0, 14 /* CC::al */, $noreg, implicit killed $q1, implicit-def $q1
bb.2.vector.body:
successors: %bb.2(0x7c000000), %bb.3(0x04000000)
liveins: $lr, $q1, $r0, $r1, $r2
renamable $vpr = MVE_VCTP32 renamable $r2, 0, $noreg
renamable $r2, dead $cpsr = tSUBi8 killed renamable $r2, 4, 14 /* CC::al */, $noreg
renamable $lr = t2LoopDec killed renamable $lr, 1
MVE_VPST 2, implicit $vpr
renamable $r0, renamable $q0 = MVE_VLDRWU32_post killed renamable $r0, 16, 1, renamable $vpr :: (load 16 from %ir.lsr.iv12, align 4)
renamable $r1, renamable $q2 = MVE_VLDRWU32_post killed renamable $r1, 16, 1, renamable $vpr :: (load 16 from %ir.lsr.iv1315, align 4)
renamable $q1 = MVE_VFMAf32 killed renamable $q1, killed renamable $q2, killed renamable $q0, 1, killed renamable $vpr
t2LoopEnd renamable $lr, %bb.2, implicit-def dead $cpsr
tB %bb.3, 14 /* CC::al */, $noreg
bb.3.middle.block:
liveins: $q1
renamable $s0 = nnan ninf nsz arcp contract afn reassoc VADDS renamable $s6, renamable $s7, 14 /* CC::al */, $noreg
renamable $s2 = nnan ninf nsz arcp contract afn reassoc VADDS killed renamable $s4, killed renamable $s5, 14 /* CC::al */, $noreg, implicit $q1
renamable $s0 = nnan ninf nsz arcp contract afn reassoc VADDS killed renamable $s2, killed renamable $s0, 14 /* CC::al */, $noreg
$sp = frame-destroy t2LDMIA_UPD $sp, 14 /* CC::al */, $noreg, def $r7, def $lr
tBX_RET 14 /* CC::al */, $noreg, implicit killed $s0
bb.4 (align 4):
CONSTPOOL_ENTRY 0, %const.0, 4
...
---
name: insert_after_vdup_2
alignment: 4
tracksRegLiveness: true
registers: []
liveins:
- { reg: '$r0', virtual-reg: '' }
- { reg: '$r1', virtual-reg: '' }
- { reg: '$s0', virtual-reg: '' }
- { reg: '$r2', virtual-reg: '' }
frameInfo:
stackSize: 8
offsetAdjustment: 0
maxAlignment: 4
savePoint: ''
restorePoint: ''
fixedStack: []
stack:
- { id: 0, name: '', type: spill-slot, offset: -4, size: 4, alignment: 4,
stack-id: default, callee-saved-register: '$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: 'float 0.000000e+00'
alignment: 4
isTargetSpecific: false
machineFunctionInfo: {}
body: |
; CHECK-LABEL: name: insert_after_vdup_2
; CHECK: bb.0.entry:
; CHECK: successors: %bb.1(0x80000000)
; CHECK: liveins: $lr, $r0, $r1, $r2, $r7, $s0
; CHECK: renamable $r3, dead $cpsr = tMOVi8 0, 14 /* CC::al */, $noreg
; CHECK: t2CMPrs killed renamable $r3, renamable $r2, 19, 14 /* CC::al */, $noreg, implicit-def $cpsr
; CHECK: t2IT 0, 8, implicit-def $itstate
; CHECK: tBX_RET 0 /* CC::eq */, killed $cpsr, implicit $s0, implicit killed $itstate
; CHECK: bb.1.vector.ph:
; CHECK: successors: %bb.2(0x80000000)
; CHECK: liveins: $lr, $r0, $r1, $r2, $s0
; 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 = tMOVi8 3, 14 /* CC::al */, $noreg
; CHECK: renamable $r3 = nuw nsw t2ADDrs killed renamable $r3, renamable $r2, 19, 14 /* CC::al */, $noreg, $noreg
; CHECK: renamable $r3 = t2BICri killed renamable $r3, 3, 14 /* CC::al */, $noreg, $noreg
; CHECK: renamable $r12 = t2SUBri killed renamable $r3, 4, 14 /* CC::al */, $noreg, $noreg
; CHECK: renamable $r3, dead $cpsr = tMOVi8 1, 14 /* CC::al */, $noreg
; CHECK: renamable $lr = t2ADDrs killed renamable $r3, killed renamable $r12, 19, 14 /* CC::al */, $noreg, $noreg
; CHECK: renamable $r3 = tLDRpci %const.0, 14 /* CC::al */, $noreg :: (load 4 from constant-pool)
; CHECK: $lr = t2DLS killed renamable $lr
; CHECK: renamable $q1 = MVE_VDUP32 killed renamable $r3, 0, $noreg, undef renamable $q1
; CHECK: renamable $r2, dead $cpsr = tLSRri killed renamable $r2, 2, 14 /* CC::al */, $noreg
; CHECK: $s4 = VMOVS killed $s0, 14 /* CC::al */, $noreg, implicit killed $q1, implicit-def $q1
; CHECK: bb.2.vector.body:
; CHECK: successors: %bb.2(0x7c000000), %bb.3(0x04000000)
; CHECK: liveins: $lr, $q1, $r0, $r1, $r2
; CHECK: renamable $vpr = MVE_VCTP32 renamable $r2, 0, $noreg
; CHECK: renamable $r2, dead $cpsr = tSUBi8 killed renamable $r2, 4, 14 /* CC::al */, $noreg
; CHECK: MVE_VPST 2, implicit $vpr
; CHECK: renamable $r0, renamable $q0 = MVE_VLDRWU32_post killed renamable $r0, 16, 1, renamable $vpr :: (load 16 from %ir.lsr.iv13, align 4)
; CHECK: renamable $r1, renamable $q2 = MVE_VLDRWU32_post killed renamable $r1, 16, 1, renamable $vpr :: (load 16 from %ir.lsr.iv1416, align 4)
; CHECK: renamable $q1 = MVE_VFMAf32 killed renamable $q1, killed renamable $q2, killed renamable $q0, 1, killed renamable $vpr
; CHECK: $lr = t2LEUpdate killed renamable $lr, %bb.2
; CHECK: bb.3.middle.block:
; CHECK: liveins: $q1
; CHECK: renamable $s0 = nnan ninf nsz arcp contract afn reassoc VADDS renamable $s6, renamable $s7, 14 /* CC::al */, $noreg
; CHECK: renamable $s2 = nnan ninf nsz arcp contract afn reassoc VADDS killed renamable $s4, killed renamable $s5, 14 /* CC::al */, $noreg, implicit killed $q1
; CHECK: renamable $s0 = nnan ninf nsz arcp contract afn reassoc VADDS killed renamable $s2, killed renamable $s0, 14 /* CC::al */, $noreg
; CHECK: $sp = frame-destroy t2LDMIA_UPD $sp, 14 /* CC::al */, $noreg, def $r7, def $lr
; CHECK: tBX_RET 14 /* CC::al */, $noreg, implicit killed $s0
; CHECK: bb.4 (align 4):
; CHECK: CONSTPOOL_ENTRY 0, %const.0, 4
bb.0.entry:
successors: %bb.1(0x80000000)
liveins: $r0, $r1, $r2, $s0, $lr
renamable $r3, dead $cpsr = tMOVi8 0, 14 /* CC::al */, $noreg
t2CMPrs killed renamable $r3, renamable $r2, 19, 14 /* CC::al */, $noreg, implicit-def $cpsr
t2IT 0, 8, implicit-def $itstate
tBX_RET 0 /* CC::eq */, killed $cpsr, implicit $s0, implicit killed $itstate
bb.1.vector.ph:
successors: %bb.2(0x80000000)
liveins: $r0, $r1, $r2, $s0, $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
renamable $r3, dead $cpsr = tMOVi8 3, 14 /* CC::al */, $noreg
renamable $r3 = nuw nsw t2ADDrs killed renamable $r3, renamable $r2, 19, 14 /* CC::al */, $noreg, $noreg
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 = t2ADDrs killed renamable $r3, killed renamable $r12, 19, 14 /* CC::al */, $noreg, $noreg
renamable $r3 = tLDRpci %const.0, 14 /* CC::al */, $noreg :: (load 4 from constant-pool)
$lr = t2DoLoopStart renamable $lr
renamable $q1 = MVE_VDUP32 killed renamable $r3, 0, $noreg, undef renamable $q1
renamable $r2, dead $cpsr = tLSRri killed renamable $r2, 2, 14 /* CC::al */, $noreg
$s4 = VMOVS killed $s0, 14 /* CC::al */, $noreg, implicit killed $q1, implicit-def $q1
bb.2.vector.body:
successors: %bb.2(0x7c000000), %bb.3(0x04000000)
liveins: $lr, $q1, $r0, $r1, $r2
renamable $vpr = MVE_VCTP32 renamable $r2, 0, $noreg
renamable $r2, dead $cpsr = tSUBi8 killed renamable $r2, 4, 14 /* CC::al */, $noreg
renamable $lr = t2LoopDec killed renamable $lr, 1
MVE_VPST 2, implicit $vpr
renamable $r0, renamable $q0 = MVE_VLDRWU32_post killed renamable $r0, 16, 1, renamable $vpr :: (load 16 from %ir.lsr.iv13, align 4)
renamable $r1, renamable $q2 = MVE_VLDRWU32_post killed renamable $r1, 16, 1, renamable $vpr :: (load 16 from %ir.lsr.iv1416, align 4)
renamable $q1 = MVE_VFMAf32 killed renamable $q1, killed renamable $q2, killed renamable $q0, 1, killed renamable $vpr
t2LoopEnd renamable $lr, %bb.2, implicit-def dead $cpsr
tB %bb.3, 14 /* CC::al */, $noreg
bb.3.middle.block:
liveins: $q1
renamable $s0 = nnan ninf nsz arcp contract afn reassoc VADDS renamable $s6, renamable $s7, 14 /* CC::al */, $noreg
renamable $s2 = nnan ninf nsz arcp contract afn reassoc VADDS killed renamable $s4, killed renamable $s5, 14 /* CC::al */, $noreg, implicit $q1
renamable $s0 = nnan ninf nsz arcp contract afn reassoc VADDS killed renamable $s2, killed renamable $s0, 14 /* CC::al */, $noreg
$sp = frame-destroy t2LDMIA_UPD $sp, 14 /* CC::al */, $noreg, def $r7, def $lr
tBX_RET 14 /* CC::al */, $noreg, implicit killed $s0
bb.4 (align 4):
CONSTPOOL_ENTRY 0, %const.0, 4
...