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159 lines
7.8 KiB
159 lines
7.8 KiB
4 months ago
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# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
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# RUN: llc -mtriple=thumbv8.1m.main -mattr=+mve %s -run-pass=arm-low-overhead-loops -o - | FileCheck %s
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--- |
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define dso_local void @variant_max_use(i16* nocapture readonly %a, i16* %c, i32 %N) #0 {
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entry:
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%cmp9 = icmp eq i32 %N, 0
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%tmp = add i32 %N, 3
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%tmp1 = lshr i32 %tmp, 2
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%tmp2 = shl nuw i32 %tmp1, 2
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%tmp3 = add i32 %tmp2, -4
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%tmp4 = lshr i32 %tmp3, 2
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%tmp5 = add nuw nsw i32 %tmp4, 1
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br i1 %cmp9, label %exit, label %vector.ph
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vector.ph: ; preds = %entry
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%start = call i32 @llvm.start.loop.iterations.i32(i32 %tmp5)
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br label %vector.body
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vector.body: ; preds = %vector.body, %vector.ph
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%lsr.iv1 = phi i32 [ %lsr.iv.next, %vector.body ], [ %start, %vector.ph ]
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%lsr.iv = phi i16* [ %scevgep, %vector.body ], [ %a, %vector.ph ]
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%lsr.iv.2 = phi i16* [ %scevgep.2, %vector.body ], [ %c, %vector.ph ]
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%tmp7 = phi i32 [ %N, %vector.ph ], [ %tmp9, %vector.body ]
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%lsr.iv17 = bitcast i16* %lsr.iv to <8 x i16>*
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%tmp8 = call <8 x i1> @llvm.arm.mve.vctp16(i32 %tmp7)
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%tmp9 = sub i32 %tmp7, 8
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%wide.masked.load = call <8 x i16> @llvm.masked.load.v8i16.p0v8i16(<8 x i16>* %lsr.iv17, i32 2, <8 x i1> %tmp8, <8 x i16> undef)
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%min = tail call i16 @llvm.vector.reduce.smax.v8i16(<8 x i16> %wide.masked.load)
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store i16 %min, i16* %lsr.iv.2
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%scevgep = getelementptr i16, i16* %lsr.iv, i32 8
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%scevgep.2 = getelementptr i16, i16* %lsr.iv.2, i32 1
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%tmp10 = call i32 @llvm.loop.decrement.reg.i32.i32.i32(i32 %lsr.iv1, i32 1)
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%tmp11 = icmp ne i32 %tmp10, 0
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%lsr.iv.next = add nsw i32 %lsr.iv1, -1
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br i1 %tmp11, label %vector.body, label %exit
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exit: ; preds = %vector.body, %entry
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ret void
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}
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declare <8 x i16> @llvm.masked.load.v8i16.p0v8i16(<8 x i16>*, i32 immarg, <8 x i1>, <8 x i16>)
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declare i32 @llvm.start.loop.iterations.i32(i32)
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declare i32 @llvm.loop.decrement.reg.i32.i32.i32(i32, i32)
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declare <8 x i1> @llvm.arm.mve.vctp16(i32)
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declare i16 @llvm.vector.reduce.smax.v8i16(<8 x i16>)
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...
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---
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name: variant_max_use
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alignment: 2
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tracksRegLiveness: true
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registers: []
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liveins:
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- { reg: '$r0', virtual-reg: '' }
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- { reg: '$r1', virtual-reg: '' }
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- { reg: '$r2', virtual-reg: '' }
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frameInfo:
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stackSize: 8
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offsetAdjustment: 0
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maxAlignment: 4
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fixedStack: []
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stack:
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- { id: 0, name: '', type: spill-slot, offset: -4, size: 4, alignment: 4,
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stack-id: default, callee-saved-register: '$lr', callee-saved-restored: false,
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debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
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- { id: 1, name: '', type: spill-slot, offset: -8, size: 4, alignment: 4,
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stack-id: default, callee-saved-register: '$r5', callee-saved-restored: true,
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debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
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callSites: []
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constants: []
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machineFunctionInfo: {}
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body: |
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; CHECK-LABEL: name: variant_max_use
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; CHECK: bb.0.entry:
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; CHECK: successors: %bb.1(0x80000000)
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; CHECK: liveins: $lr, $r0, $r1, $r2, $r5
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; CHECK: frame-setup tPUSH 14 /* CC::al */, $noreg, killed $r5, killed $lr, implicit-def $sp, implicit $sp
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; CHECK: frame-setup CFI_INSTRUCTION def_cfa_offset 8
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; CHECK: frame-setup CFI_INSTRUCTION offset $lr, -4
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; CHECK: frame-setup CFI_INSTRUCTION offset $r5, -8
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; CHECK: tCMPi8 renamable $r2, 0, 14 /* CC::al */, $noreg, implicit-def $cpsr
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; CHECK: t2IT 0, 8, implicit-def $itstate
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; CHECK: tPOP_RET 0 /* CC::eq */, killed $cpsr, def $r5, def $pc, implicit killed $itstate
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; CHECK: bb.1.vector.ph:
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; CHECK: successors: %bb.2(0x80000000)
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; CHECK: liveins: $r0, $r1, $r2
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; CHECK: renamable $r3, dead $cpsr = tADDi3 renamable $r2, 3, 14 /* CC::al */, $noreg
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; CHECK: renamable $r3 = t2BICri killed renamable $r3, 3, 14 /* CC::al */, $noreg, $noreg
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; CHECK: renamable $r12 = t2SUBri killed renamable $r3, 4, 14 /* CC::al */, $noreg, $noreg
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; CHECK: renamable $r3, dead $cpsr = tMOVi8 1, 14 /* CC::al */, $noreg
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; CHECK: renamable $r3 = nuw nsw t2ADDrs killed renamable $r3, killed renamable $r12, 19, 14 /* CC::al */, $noreg, $noreg
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; CHECK: $r12 = t2MOVi16 32768, 14 /* CC::al */, $noreg
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; CHECK: $r12 = t2MOVTi16 killed $r12, 65535, 14 /* CC::al */, $noreg
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; CHECK: dead $lr = t2DLS renamable $r3
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; CHECK: $r5 = tMOVr killed $r3, 14 /* CC::al */, $noreg
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; CHECK: bb.2.vector.body:
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; CHECK: successors: %bb.2(0x7c000000), %bb.3(0x04000000)
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; CHECK: liveins: $r0, $r1, $r2, $r5, $r12
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; CHECK: $r3 = tMOVr $r12, 14 /* CC::al */, $noreg
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; CHECK: renamable $vpr = MVE_VCTP16 renamable $r2, 0, $noreg
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; CHECK: MVE_VPST 8, implicit $vpr
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; CHECK: renamable $r0, renamable $q0 = MVE_VLDRHU16_post killed renamable $r0, 16, 1, killed renamable $vpr :: (load 16 from %ir.lsr.iv17, align 2)
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; CHECK: renamable $r3 = MVE_VMAXVs16 killed renamable $r3, killed renamable $q0, 0, $noreg
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; CHECK: $lr = tMOVr $r5, 14 /* CC::al */, $noreg
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; CHECK: early-clobber renamable $r1 = t2STRH_POST killed renamable $r3, killed renamable $r1, 2, 14 /* CC::al */, $noreg :: (store 2 into %ir.lsr.iv.2)
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; CHECK: renamable $r5, dead $cpsr = nsw tSUBi8 killed $r5, 1, 14 /* CC::al */, $noreg
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; CHECK: renamable $r2, dead $cpsr = tSUBi8 killed renamable $r2, 8, 14 /* CC::al */, $noreg
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; CHECK: dead $lr = t2LEUpdate killed renamable $lr, %bb.2
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; CHECK: bb.3.exit:
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; CHECK: tPOP_RET 14 /* CC::al */, $noreg, def $r5, def $pc
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bb.0.entry:
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successors: %bb.1(0x80000000)
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liveins: $r0, $r1, $r2, $r5, $lr
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frame-setup tPUSH 14 /* CC::al */, $noreg, killed $r5, killed $lr, implicit-def $sp, implicit $sp
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frame-setup CFI_INSTRUCTION def_cfa_offset 8
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frame-setup CFI_INSTRUCTION offset $lr, -4
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frame-setup CFI_INSTRUCTION offset $r5, -8
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tCMPi8 renamable $r2, 0, 14 /* CC::al */, $noreg, implicit-def $cpsr
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t2IT 0, 8, implicit-def $itstate
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tPOP_RET 0 /* CC::eq */, killed $cpsr, def $r5, def $pc, implicit killed $itstate
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bb.1.vector.ph:
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successors: %bb.2(0x80000000)
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liveins: $r0, $r1, $r2, $r5, $lr
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renamable $r3, dead $cpsr = tADDi3 renamable $r2, 3, 14 /* CC::al */, $noreg
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renamable $r3 = t2BICri killed renamable $r3, 3, 14 /* CC::al */, $noreg, $noreg
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renamable $r12 = t2SUBri killed renamable $r3, 4, 14 /* CC::al */, $noreg, $noreg
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renamable $r3, dead $cpsr = tMOVi8 1, 14 /* CC::al */, $noreg
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renamable $r3 = nuw nsw t2ADDrs killed renamable $r3, killed renamable $r12, 19, 14 /* CC::al */, $noreg, $noreg
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$r12 = t2MOVi16 32768, 14 /* CC::al */, $noreg
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$r12 = t2MOVTi16 killed $r12, 65535, 14 /* CC::al */, $noreg
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$lr = t2DoLoopStart renamable $r3
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$r5 = tMOVr killed $r3, 14 /* CC::al */, $noreg
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bb.2.vector.body:
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successors: %bb.2(0x7c000000), %bb.3(0x04000000)
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liveins: $r0, $r1, $r2, $r5, $r12
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$r3 = tMOVr $r12, 14 /* CC::al */, $noreg
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renamable $vpr = MVE_VCTP16 renamable $r2, 0, $noreg
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MVE_VPST 8, implicit $vpr
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renamable $r0, renamable $q0 = MVE_VLDRHU16_post killed renamable $r0, 16, 1, killed renamable $vpr :: (load 16 from %ir.lsr.iv17, align 2)
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renamable $r3 = MVE_VMAXVs16 killed renamable $r3, killed renamable $q0, 0, $noreg
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$lr = tMOVr $r5, 14 /* CC::al */, $noreg
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early-clobber renamable $r1 = t2STRH_POST killed renamable $r3, killed renamable $r1, 2, 14 /* CC::al */, $noreg :: (store 2 into %ir.lsr.iv.2)
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renamable $r5, dead $cpsr = nsw tSUBi8 killed $r5, 1, 14 /* CC::al */, $noreg
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renamable $r2, dead $cpsr = tSUBi8 killed renamable $r2, 8, 14 /* CC::al */, $noreg
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renamable $lr = t2LoopDec killed renamable $lr, 1
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t2LoopEnd killed renamable $lr, %bb.2, implicit-def dead $cpsr
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tB %bb.3, 14 /* CC::al */, $noreg
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bb.3.exit:
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tPOP_RET 14 /* CC::al */, $noreg, def $r5, def $pc
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...
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