| # RUN: llc -mtriple=thumbv8.1m.main %s -run-pass=arm-cp-islands --verify-machineinstrs -o - | FileCheck %s --check-prefix=CHECK-LOB |
| # RUN: llc -mtriple=thumbv8.1m.main -mattr=-lob %s -run-pass=arm-cp-islands --verify-machineinstrs -o - | FileCheck %s --check-prefix=CHECK-NOLOB |
| |
| # CHECK-NOLOB-NOT: t2LE |
| |
| # CHECK-LOB: bb.3.land.rhs: |
| # CHECK-LOB: tCBZ $r0, %bb.8 |
| # CHECK-LOB: t2LE %bb.3 |
| # CHECK-LOB: bb.6.land.rhs11: |
| # CHECK-LOB: bb.7.while.body19: |
| # CHECK-LOB: tCBZ $r0, %bb.8 |
| # CHECK-LOB: t2LE %bb.6 |
| # CHECK-LOB: bb.8: |
| |
| --- | |
| target datalayout = "e-m:e-p:32:32-Fi8-i64:64-v128:64:128-a:0:32-n32-S64" |
| target triple = "thumbv8.1m.main-unknown-unknown" |
| |
| %struct.head_s = type { %struct.head_s*, %struct.data_s* } |
| %struct.data_s = type { i16, i16 } |
| |
| ; Function Attrs: norecurse nounwind readonly |
| define dso_local arm_aapcscc %struct.head_s* @search(%struct.head_s* readonly %list, %struct.data_s* nocapture readonly %info) local_unnamed_addr #0 { |
| entry: |
| %idx = getelementptr inbounds %struct.data_s, %struct.data_s* %info, i32 0, i32 1 |
| %0 = load i16, i16* %idx, align 2 |
| %cmp = icmp sgt i16 %0, -1 |
| br i1 %cmp, label %while.cond.preheader, label %while.cond9.preheader |
| |
| while.cond9.preheader: ; preds = %entry |
| %1 = icmp eq %struct.head_s* %list, null |
| br i1 %1, label %return, label %land.rhs11.lr.ph |
| |
| land.rhs11.lr.ph: ; preds = %while.cond9.preheader |
| %data16143 = bitcast %struct.data_s* %info to i16* |
| %2 = load i16, i16* %data16143, align 2 |
| %conv15 = sext i16 %2 to i32 |
| br label %land.rhs11 |
| |
| while.cond.preheader: ; preds = %entry |
| %3 = icmp eq %struct.head_s* %list, null |
| br i1 %3, label %return, label %land.rhs.preheader |
| |
| land.rhs.preheader: ; preds = %while.cond.preheader |
| br label %land.rhs |
| |
| land.rhs: ; preds = %land.rhs.preheader, %while.body |
| %list.addr.033 = phi %struct.head_s* [ %6, %while.body ], [ %list, %land.rhs.preheader ] |
| %info2 = getelementptr inbounds %struct.head_s, %struct.head_s* %list.addr.033, i32 0, i32 1 |
| %4 = load %struct.data_s*, %struct.data_s** %info2, align 4 |
| %idx3 = getelementptr inbounds %struct.data_s, %struct.data_s* %4, i32 0, i32 1 |
| %5 = load i16, i16* %idx3, align 2 |
| %cmp7 = icmp eq i16 %5, %0 |
| br i1 %cmp7, label %return, label %while.body |
| |
| while.body: ; preds = %land.rhs |
| %next4 = bitcast %struct.head_s* %list.addr.033 to %struct.head_s** |
| %6 = load %struct.head_s*, %struct.head_s** %next4, align 4 |
| %tobool = icmp eq %struct.head_s* %6, null |
| br i1 %tobool, label %return, label %land.rhs |
| |
| land.rhs11: ; preds = %while.body19, %land.rhs11.lr.ph |
| %list.addr.136 = phi %struct.head_s* [ %list, %land.rhs11.lr.ph ], [ %10, %while.body19 ] |
| %info12 = getelementptr inbounds %struct.head_s, %struct.head_s* %list.addr.136, i32 0, i32 1 |
| %7 = load %struct.data_s*, %struct.data_s** %info12, align 4 |
| %data165 = bitcast %struct.data_s* %7 to i16* |
| %8 = load i16, i16* %data165, align 2 |
| %9 = and i16 %8, 255 |
| %and = zext i16 %9 to i32 |
| %cmp16 = icmp eq i32 %and, %conv15 |
| br i1 %cmp16, label %return, label %while.body19 |
| |
| while.body19: ; preds = %land.rhs11 |
| %next206 = bitcast %struct.head_s* %list.addr.136 to %struct.head_s** |
| %10 = load %struct.head_s*, %struct.head_s** %next206, align 4 |
| %tobool10 = icmp eq %struct.head_s* %10, null |
| br i1 %tobool10, label %return, label %land.rhs11 |
| |
| return: ; preds = %while.body19, %land.rhs11, %while.body, %land.rhs, %while.cond.preheader, %while.cond9.preheader |
| %retval.0 = phi %struct.head_s* [ null, %while.cond.preheader ], [ null, %while.cond9.preheader ], [ %list.addr.033, %land.rhs ], [ null, %while.body ], [ %list.addr.136, %land.rhs11 ], [ null, %while.body19 ] |
| ret %struct.head_s* %retval.0 |
| } |
| |
| attributes #0 = { norecurse nounwind readonly "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="all" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="generic" "target-features"="+armv8.1-m.main,+hwdiv,+lob,+ras,+soft-float,+strict-align,+thumb-mode,-crypto,-d32,-dotprod,-fp-armv8,-fp-armv8d16,-fp-armv8d16sp,-fp-armv8sp,-fp16,-fp16fml,-fp64,-fpregs,-fullfp16,-neon,-vfp2,-vfp2d16,-vfp2d16sp,-vfp2sp,-vfp3,-vfp3d16,-vfp3d16sp,-vfp3sp,-vfp4,-vfp4d16,-vfp4d16sp,-vfp4sp" "unsafe-fp-math"="false" "use-soft-float"="true" } |
| |
| ... |
| --- |
| name: search |
| alignment: 1 |
| exposesReturnsTwice: false |
| legalized: false |
| regBankSelected: false |
| selected: false |
| failedISel: false |
| tracksRegLiveness: true |
| hasWinCFI: false |
| registers: [] |
| liveins: |
| - { reg: '$r0', virtual-reg: '' } |
| - { reg: '$r1', virtual-reg: '' } |
| frameInfo: |
| isFrameAddressTaken: false |
| isReturnAddressTaken: false |
| hasStackMap: false |
| hasPatchPoint: false |
| stackSize: 0 |
| offsetAdjustment: 0 |
| maxAlignment: 1 |
| adjustsStack: false |
| hasCalls: false |
| stackProtector: '' |
| maxCallFrameSize: 0 |
| cvBytesOfCalleeSavedRegisters: 0 |
| hasOpaqueSPAdjustment: false |
| hasVAStart: false |
| hasMustTailInVarArgFunc: false |
| localFrameSize: 0 |
| savePoint: '' |
| restorePoint: '' |
| fixedStack: [] |
| stack: [] |
| callSites: [] |
| constants: [] |
| machineFunctionInfo: {} |
| body: | |
| bb.0.entry: |
| successors: %bb.5(0x50000000), %bb.1(0x30000000) |
| liveins: $r0, $r1 |
| |
| renamable $r2 = t2LDRSHi12 renamable $r1, 2, 14, $noreg :: (load 2 from %ir.idx) |
| t2CMPri renamable $r2, -1, 14, $noreg, implicit-def $cpsr |
| t2Bcc %bb.1, 13, killed $cpsr |
| |
| bb.5.while.cond.preheader: |
| successors: %bb.8(0x30000000), %bb.6(0x50000000) |
| liveins: $r0, $r2 |
| |
| tCMPi8 renamable $r0, 0, 14, $noreg, implicit-def $cpsr |
| t2Bcc %bb.8, 0, killed $cpsr |
| |
| bb.6.land.rhs.preheader: |
| successors: %bb.7(0x80000000) |
| liveins: $r0, $r2 |
| |
| renamable $r1 = tUXTH killed renamable $r2, 14, $noreg |
| |
| bb.7.land.rhs: |
| successors: %bb.8(0x04000000), %bb.7(0x7c000000) |
| liveins: $r0, $r1 |
| |
| renamable $r2 = tLDRi renamable $r0, 1, 14, $noreg :: (load 4 from %ir.info2) |
| renamable $r2 = tLDRHi killed renamable $r2, 1, 14, $noreg :: (load 2 from %ir.idx3) |
| tCMPr killed renamable $r2, renamable $r1, 14, $noreg, implicit-def $cpsr |
| t2IT 0, 8, implicit-def $itstate |
| tBX_RET 0, killed $cpsr, implicit $r0, implicit killed $itstate |
| renamable $r0 = tLDRi killed renamable $r0, 0, 14, $noreg :: (load 4 from %ir.next4) |
| tCMPi8 renamable $r0, 0, 14, $noreg, implicit-def $cpsr |
| t2Bcc %bb.7, 1, killed $cpsr |
| t2B %bb.8, 14, $noreg |
| |
| bb.1.while.cond9.preheader: |
| successors: %bb.8(0x30000000), %bb.2(0x50000000) |
| liveins: $r0, $r1 |
| |
| tCMPi8 renamable $r0, 0, 14, $noreg, implicit-def $cpsr |
| t2Bcc %bb.8, 0, killed $cpsr |
| |
| bb.2.land.rhs11.lr.ph: |
| successors: %bb.3(0x80000000) |
| liveins: $r0, $r1 |
| |
| renamable $r1 = t2LDRSHi12 killed renamable $r1, 0, 14, $noreg :: (load 2 from %ir.data16143) |
| |
| bb.3.land.rhs11: |
| successors: %bb.9(0x04000000), %bb.4(0x7c000000) |
| liveins: $r0, $r1 |
| |
| renamable $r2 = tLDRi renamable $r0, 1, 14, $noreg :: (load 4 from %ir.info12) |
| renamable $r2 = tLDRBi killed renamable $r2, 0, 14, $noreg :: (load 1 from %ir.data165, align 2) |
| tCMPr killed renamable $r2, renamable $r1, 14, $noreg, implicit-def $cpsr |
| t2Bcc %bb.9, 0, killed $cpsr |
| |
| bb.4.while.body19: |
| successors: %bb.8(0x04000000), %bb.3(0x7c000000) |
| liveins: $r0, $r1 |
| |
| renamable $r0 = tLDRi killed renamable $r0, 0, 14, $noreg :: (load 4 from %ir.next206) |
| tCMPi8 renamable $r0, 0, 14, $noreg, implicit-def $cpsr |
| t2Bcc %bb.3, 1, killed $cpsr |
| |
| bb.8: |
| successors: %bb.9(0x80000000) |
| |
| renamable $r0, dead $cpsr = tMOVi8 0, 14, $noreg |
| |
| bb.9.return: |
| liveins: $r0 |
| |
| tBX_RET 14, $noreg, implicit killed $r0 |
| |
| ... |
