# 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 --verify-machineinstrs -o - | FileCheck %s
--- |
define i16 @predicated_livout(i8* %input_1_vect, i8* %input_2_vect, i32 %block_size) #0 {
entry:
%rnd.up = add i32 %block_size, 7
%div = lshr i32 %rnd.up, 3
%0 = call i1 @llvm.test.set.loop.iterations.i32(i32 %div)
br i1 %0, label %for.body.preheader, label %for.cond.cleanup
for.body.preheader: ; preds = %entry
br label %for.body
for.body: ; preds = %for.body.preheader, %for.body
%lsr.iv = phi i32 [ 0, %for.body.preheader ], [ %lsr.iv.next, %for.body ]
%input_1_vect.addr.052 = phi i8* [ %add.ptr, %for.body ], [ %input_1_vect, %for.body.preheader ]
%input_2_vect.addr.051 = phi i8* [ %add.ptr14, %for.body ], [ %input_2_vect, %for.body.preheader ]
%num_elements.049 = phi i32 [ %sub, %for.body ], [ %block_size, %for.body.preheader ]
%acc = phi <8 x i16> [ %acc.next, %for.body ], [ zeroinitializer, %for.body.preheader ]
%input_2_cast = bitcast i8* %input_2_vect.addr.051 to <8 x i8>*
%input_1_cast = bitcast i8* %input_1_vect.addr.052 to <8 x i8>*
%pred = tail call <8 x i1> @llvm.arm.mve.vctp16(i32 %num_elements.049)
%load.1 = tail call <8 x i8> @llvm.masked.load.v8i8.p0v8i8(<8 x i8>* %input_1_cast, i32 1, <8 x i1> %pred, <8 x i8> undef)
%zext.load.1 = zext <8 x i8> %load.1 to <8 x i16>
%load.2 = tail call <8 x i8> @llvm.masked.load.v8i8.p0v8i8(<8 x i8>* %input_2_cast, i32 1, <8 x i1> %pred, <8 x i8> undef)
%zext.load.2 = zext <8 x i8> %load.2 to <8 x i16>
%add = tail call <8 x i16> @llvm.arm.mve.add.predicated.v8i16.v8i1(<8 x i16> %zext.load.1, <8 x i16> %zext.load.2, <8 x i1> %pred, <8 x i16> undef)
%acc.next = tail call <8 x i16> @llvm.arm.mve.add.predicated.v8i16.v8i1(<8 x i16> %add, <8 x i16> %acc, <8 x i1> %pred, <8 x i16> undef)
%add.ptr = getelementptr inbounds i8, i8* %input_1_vect.addr.052, i32 8
%add.ptr14 = getelementptr inbounds i8, i8* %input_2_vect.addr.051, i32 8
%sub = add i32 %num_elements.049, -8
%iv.next = call i32 @llvm.loop.decrement.reg.i32.i32.i32(i32 %lsr.iv, i32 1)
%cmp = icmp ne i32 %iv.next, 0
%lsr.iv.next = add i32 %lsr.iv, -1
br i1 %cmp, label %for.body, label %middle.block
middle.block: ; preds = %for.body
%reduce = tail call i16 @llvm.vector.reduce.add.v8i16(<8 x i16> %acc.next)
ret i16 %reduce
for.cond.cleanup: ; preds = %entry
ret i16 0
}
declare <8 x i1> @llvm.arm.mve.vctp16(i32) #1
declare <8 x i8> @llvm.masked.load.v8i8.p0v8i8(<8 x i8>*, i32 immarg, <8 x i1>, <8 x i8>) #2
declare i1 @llvm.test.set.loop.iterations.i32(i32) #3
declare i32 @llvm.loop.decrement.reg.i32.i32.i32(i32, i32) #3
declare i16 @llvm.vector.reduce.add.v8i16(<8 x i16>) #4
declare <8 x i16> @llvm.arm.mve.add.predicated.v8i16.v8i1(<8 x i16>, <8 x i16>, <8 x i1>, <8 x i16>) #1
...
---
name: predicated_livout
alignment: 2
tracksRegLiveness: true
registers: []
liveins:
- { reg: '$r0', virtual-reg: '' }
- { reg: '$r1', virtual-reg: '' }
- { reg: '$r2', virtual-reg: '' }
frameInfo:
stackSize: 8
offsetAdjustment: 0
maxAlignment: 4
fixedStack: []
stack:
- { id: 0, name: '', type: spill-slot, offset: -4, size: 4, alignment: 4,
stack-id: default, callee-saved-register: '$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: '$r7', callee-saved-restored: true,
debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
callSites: []
constants: []
machineFunctionInfo: {}
body: |
; CHECK-LABEL: name: predicated_livout
; CHECK: bb.0.entry:
; CHECK: successors: %bb.1(0x40000000), %bb.4(0x40000000)
; CHECK: liveins: $lr, $r0, $r1, $r2, $r7
; CHECK: frame-setup tPUSH 14 /* CC::al */, $noreg, killed $r7, 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: $lr = MVE_WLSTP_16 killed renamable $r2, %bb.4
; CHECK: bb.1.for.body.preheader:
; CHECK: successors: %bb.2(0x80000000)
; CHECK: liveins: $lr, $r0, $r1
; CHECK: renamable $q0 = MVE_VMOVimmi32 0, 0, $noreg, $noreg, undef renamable $q0
; CHECK: renamable $r3, dead $cpsr = tMOVi8 0, 14 /* CC::al */, $noreg
; CHECK: bb.2.for.body:
; CHECK: successors: %bb.2(0x7c000000), %bb.3(0x04000000)
; CHECK: liveins: $lr, $q0, $r0, $r1, $r3
; CHECK: renamable $r3, dead $cpsr = tSUBi8 killed $r3, 1, 14 /* CC::al */, $noreg
; CHECK: renamable $r1, renamable $q1 = MVE_VLDRBU16_post killed renamable $r1, 8, 0, $noreg, $noreg :: (load (s64) from %ir.input_2_cast, align 1)
; CHECK: renamable $r0, renamable $q2 = MVE_VLDRBU16_post killed renamable $r0, 8, 0, $noreg, $noreg :: (load (s64) from %ir.input_1_cast, align 1)
; CHECK: renamable $q1 = MVE_VADDi16 killed renamable $q2, killed renamable $q1, 0, $noreg, $noreg, undef renamable $q1
; CHECK: renamable $q0 = MVE_VADDi16 killed renamable $q1, killed renamable $q0, 0, killed $noreg, $noreg, undef renamable $q0
; CHECK: $lr = MVE_LETP killed renamable $lr, %bb.2
; CHECK: bb.3.middle.block:
; CHECK: liveins: $q0
; CHECK: renamable $r0 = MVE_VADDVu16no_acc killed renamable $q0, 0, $noreg, $noreg
; CHECK: tPOP_RET 14 /* CC::al */, $noreg, def $r7, def $pc, implicit killed $r0
; CHECK: bb.4.for.cond.cleanup:
; CHECK: liveins: $lr
; CHECK: $r0, dead $cpsr = tMOVi8 0, 14 /* CC::al */, $noreg
; CHECK: tBX_RET 14 /* CC::al */, $noreg, implicit killed $r0
bb.0.entry:
successors: %bb.1(0x40000000), %bb.4(0x40000000)
liveins: $r0, $r1, $r2, $lr, $r7
frame-setup tPUSH 14, $noreg, killed $r7, 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
renamable $r3, dead $cpsr = tADDi3 renamable $r2, 7, 14, $noreg
renamable $lr = t2LSRri killed renamable $r3, 3, 14, $noreg, $noreg
$lr = t2WhileLoopStartLR renamable $lr, %bb.4, implicit-def dead $cpsr
tB %bb.1, 14, $noreg
bb.1.for.body.preheader:
successors: %bb.2(0x80000000)
liveins: $r0, $r1, $r2, $lr
renamable $q0 = MVE_VMOVimmi32 0, 0, $noreg, $noreg, undef renamable $q0
renamable $r3, dead $cpsr = tMOVi8 0, 14, $noreg
bb.2.for.body:
successors: %bb.2(0x7c000000), %bb.3(0x04000000)
liveins: $q0, $r0, $r1, $r2, $r3, $lr
renamable $vpr = MVE_VCTP16 renamable $r2, 0, $noreg, $noreg
renamable $r3, dead $cpsr = tSUBi8 killed $r3, 1, 14, $noreg
renamable $r2, dead $cpsr = tSUBi8 killed renamable $r2, 8, 14, $noreg
renamable $lr = t2LoopDec killed renamable $lr, 1
MVE_VPST 1, implicit $vpr
renamable $r1, renamable $q1 = MVE_VLDRBU16_post killed renamable $r1, 8, 1, renamable $vpr, $noreg :: (load (s64) from %ir.input_2_cast, align 1)
renamable $r0, renamable $q2 = MVE_VLDRBU16_post killed renamable $r0, 8, 1, renamable $vpr, $noreg :: (load (s64) from %ir.input_1_cast, align 1)
renamable $q1 = MVE_VADDi16 killed renamable $q2, killed renamable $q1, 1, renamable $vpr, $noreg, undef renamable $q1
renamable $q0 = MVE_VADDi16 killed renamable $q1, killed renamable $q0, 1, killed renamable $vpr, $noreg, undef renamable $q0
t2LoopEnd renamable $lr, %bb.2, implicit-def dead $cpsr
tB %bb.3, 14, $noreg
bb.3.middle.block:
liveins: $q0
renamable $r0 = MVE_VADDVu16no_acc killed renamable $q0, 0, $noreg, $noreg
tPOP_RET 14, $noreg, def $r7, def $pc, implicit killed $r0
bb.4.for.cond.cleanup:
liveins: $lr
$r0, dead $cpsr = tMOVi8 0, 14, $noreg
tBX_RET 14, $noreg, implicit killed $r0
...