TheRock/compiler/amd-llvm/llvm/test/CodeGen/MIR/Hexagon/addrmode-opt-nonreaching.mir

# It is not safe to make the transformation if the definition is killed by a call.
# Use debug output for simplicity and test resilience.
#
# RUN: llc -mtriple=hexagon -run-pass amode-opt %s -print-after-all -o %t_1.mir 2>&1 | FileCheck %s
# CHECK: bb.4.if.else
# CHECK-NOT: liveins: $r2
--- |
  ; ModuleID = 'foo.reduced.i'
  source_filename = "foo.reduced.i"
  target datalayout = "e-m:e-p:32:32:32-a:0-n16:32-i64:64:64-i32:32:32-i16:16:16-i1:8:8-f32:32:32-f64:64:64-v32:32:32-v64:64:64-v512:512:512-v1024:1024:1024-v2048:2048:2048"
  target triple = "hexagon-unknown-unknown-elf"

  %struct.struct_1 = type { i8, i8, [7 x %struct.struct_3] }
  %struct.struct_3 = type { i8, %struct.struct_4 }
  %struct.struct_4 = type { i32, i32 }
  %struct.struct_2 = type { i32, i32 }

  ; Function Attrs: nounwind
  define dso_local zeroext i8 @fun_4(i32 noundef %arg_1, i8 noundef zeroext %arg_2, ptr nocapture noundef readonly %arg_3, ptr nocapture noundef readonly %arg_4) local_unnamed_addr #0 {
  entry:
    %conv = zext i8 %arg_2 to i32
    %cmp = icmp ult i8 %arg_2, 7
    br i1 %cmp, label %if.then, label %if.end

  if.then:                                          ; preds = %entry
    tail call void @fun_2(ptr noundef null, i32 noundef %conv) #3
    unreachable

  if.end:                                           ; preds = %entry
    %cgep = getelementptr inbounds %struct.struct_1, ptr %arg_3, i32 0, i32 2, i32 %conv
    %cgep23 = getelementptr inbounds %struct.struct_3, ptr %cgep, i32 0, i32 1, i32 1
    %0 = load i32, ptr %cgep23, align 4
    %cmp3 = icmp eq i32 %0, 4
    br i1 %cmp3, label %land.lhs.true, label %if.else

  land.lhs.true:                                    ; preds = %if.end
    %cgep22 = getelementptr inbounds %struct.struct_3, ptr %cgep, i32 0, i32 1
    %1 = load i32, ptr %cgep22, align 4
    %call = tail call zeroext i8 @fun_5(i32 noundef %arg_1, i32 noundef %1) #4
    %tobool.not = icmp eq i8 %call, 0
    br i1 %tobool.not, label %if.else, label %if.end12

  if.else:                                          ; preds = %land.lhs.true, %if.end
    %2 = load i8, ptr %cgep, align 4
    %cmp.i = icmp eq i8 %2, 1
    br i1 %cmp.i, label %if.then.i, label %fun_3.exit

  if.then.i:                                        ; preds = %if.else
    %cgep2027 = bitcast ptr %arg_4 to ptr
    %cgep26 = getelementptr inbounds %struct.struct_2, ptr %cgep2027, i32 0, i32 1
    %3 = load i32, ptr %cgep26, align 4
    %call.i = tail call i32 @fun_1(i32 noundef %arg_1) #4
    %cmp2.i = icmp ult i32 %3, %call.i
    %cgep25 = getelementptr inbounds %struct.struct_2, ptr %cgep2027, i32 0, i32 1
    %4 = load i32, ptr %cgep25, align 4
    %call6.i = tail call i32 @fun_1(i32 noundef %arg_1) #4
    %cmp7.i = icmp ult i32 %4, %call6.i
    %5 = select i1 %cmp2.i, i1 true, i1 %cmp7.i
    br label %fun_3.exit

  fun_3.exit:                                       ; preds = %if.else, %if.then.i
    %resume_ttl.1.i = phi i1 [ false, %if.else ], [ %5, %if.then.i ]
    %conv15.i = zext i1 %resume_ttl.1.i to i8
    br label %if.end12

  if.end12:                                         ; preds = %land.lhs.true, %fun_3.exit
    %resume_loops.0 = phi i8 [ %conv15.i, %fun_3.exit ], [ 1, %land.lhs.true ]
    ret i8 %resume_loops.0
  }

  ; Function Attrs: noreturn
  declare dso_local void @fun_2(ptr noundef, i32 noundef) local_unnamed_addr #1

  declare dso_local zeroext i8 @fun_5(i32 noundef, i32 noundef) local_unnamed_addr #2

  declare dso_local i32 @fun_1(i32 noundef) local_unnamed_addr #2

  !llvm.module.flags = !{!0, !1}
  !llvm.ident = !{!2}

  !0 = !{i32 1, !"wchar_size", i32 4}
  !1 = !{i32 7, !"frame-pointer", i32 2}
  !2 = !{!""}

...
---
name:            fun_4
alignment:       16
exposesReturnsTwice: false
legalized:       false
regBankSelected: false
selected:        false
failedISel:      false
tracksRegLiveness: true
hasWinCFI:       false
callsEHReturn:   false
callsUnwindInit: false
hasEHContTarget: false
hasEHScopes:     false
hasEHFunclets:   false
isOutlined:      false
debugInstrRef:   false
failsVerification: false
tracksDebugUserValues: true
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:       0
  offsetAdjustment: 0
  maxAlignment:    4
  adjustsStack:    false
  hasCalls:        true
  stackProtector:  ''
  functionContext: ''
  maxCallFrameSize: 4294967295
  cvBytesOfCalleeSavedRegisters: 0
  hasOpaqueSPAdjustment: false
  hasVAStart:      false
  hasMustTailInVarArgFunc: false
  hasTailCall:     false
  localFrameSize:  0
  savePoint:       []
  restorePoint:    []
fixedStack:      []
stack:
  - { id: 0, name: '', type: spill-slot, offset: 0, size: 4, alignment: 4,
      stack-id: default, callee-saved-register: '', callee-saved-restored: true,
      debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
entry_values:    []
callSites:       []
debugValueSubstitutions: []
constants:       []
machineFunctionInfo: {}
body:             |
  bb.0.entry:
    successors: %bb.1(0x00000800), %bb.2(0x7ffff800)
    liveins: $r0:0x0000000000000001, $r1:0x0000000000000001, $r2:0x0000000000000001, $r3:0x0000000000000001

    renamable $p0 = C2_cmpgtui renamable $r1, 6
    renamable $r16 = COPY killed $r3
    renamable $r17 = COPY killed $r0
    J2_jumpt killed renamable $p0, %bb.2, implicit-def dead $pc
    J2_jump %bb.1, implicit-def dead $pc

  bb.1.if.then:
    successors:
    liveins: $r1:0x0000000000000001

    $r0 = A2_tfrsi 0
    ADJCALLSTACKDOWN 0, 0, implicit-def $r29, implicit-def dead $r30, implicit killed $r31, implicit killed $r30, implicit $r29
    PS_call_nr @fun_2, hexagoncsr, implicit killed $r0, implicit killed $r1, implicit-def $r29
    ADJCALLSTACKUP 0, 0, implicit-def dead $r29, implicit-def dead $r30, implicit-def dead $r31, implicit killed $r29

  bb.2.if.end:
    successors: %bb.3(0x40000000), %bb.4(0x40000000)
    liveins: $r1:0x0000000000000001, $r2:0x0000000000000001, $r16:0x0000000000000001, $r17:0x0000000000000001

    renamable $r2 = M2_macsip killed renamable $r2, killed renamable $r1, 12
    renamable $r3 = L2_loadri_io renamable $r2, 12 :: (load (s32) from %ir.cgep23)
    renamable $p0 = C2_cmpeqi killed renamable $r3, 4
    renamable $r18 = A2_addi killed renamable $r2, 4
    J2_jumpf killed renamable $p0, %bb.4, implicit-def dead $pc
    J2_jump %bb.3, implicit-def dead $pc

  bb.3.land.lhs.true:
    successors: %bb.4(0x30000000), %bb.8(0x50000000)
    liveins: $r16:0x0000000000000001, $r17:0x0000000000000001, $r18:0x0000000000000001

    renamable $r1 = L2_loadri_io renamable $r18, 4 :: (load (s32) from %ir.cgep22)
    ADJCALLSTACKDOWN 0, 0, implicit-def $r29, implicit-def dead $r30, implicit killed $r31, implicit killed $r30, implicit $r29
    $r0 = COPY renamable $r17
    J2_call @fun_5, hexagoncsr, implicit-def dead $pc, implicit-def dead $r31, implicit $r29, implicit $r0, implicit killed $r1, implicit-def $r29, implicit-def $r0
    renamable $p0 = C2_cmpeqi killed renamable $r0, 0
    ADJCALLSTACKUP 0, 0, implicit-def dead $r29, implicit-def dead $r30, implicit-def dead $r31, implicit killed $r29
    renamable $r0 = A2_tfrsi 1
    J2_jumpf killed renamable $p0, %bb.8, implicit-def dead $pc
    J2_jump %bb.4, implicit-def dead $pc

  bb.4.if.else:
    successors: %bb.6(0x40000000), %bb.5(0x40000000)
    liveins: $r16:0x0000000000000001, $r17:0x0000000000000001, $r18:0x0000000000000001

    renamable $r2 = L2_loadrb_io killed renamable $r18, 0 :: (load (s8) from %ir.cgep, align 4)
    renamable $p0 = C2_cmpeqi killed renamable $r2, 1
    J2_jumpt killed renamable $p0, %bb.6, implicit-def $pc

  bb.5:
    successors: %bb.7(0x80000000)

    renamable $p0 = PS_false
    J2_jump %bb.7, implicit-def $pc

  bb.6.if.then.i:
    successors: %bb.7(0x80000000)
    liveins: $r16:0x0000000000000001, $r17:0x0000000000000001

    ADJCALLSTACKDOWN 0, 0, implicit-def $r29, implicit-def dead $r30, implicit $r31, implicit $r30, implicit $r29
    $r0 = COPY renamable $r17
    renamable $r18 = L2_loadri_io renamable $r16, 4 :: (load (s32) from %ir.cgep26)
    J2_call @fun_1, hexagoncsr, implicit-def dead $pc, implicit-def dead $r31, implicit $r29, implicit $r0, implicit-def $r29, implicit-def $r0
    ADJCALLSTACKUP 0, 0, implicit-def dead $r29, implicit-def dead $r30, implicit-def dead $r31, implicit $r29
    renamable $p0 = C2_cmpgtu killed renamable $r0, killed renamable $r18
    STriw_pred %stack.0, 0, killed renamable $p0 :: (store (s32) into %stack.0)
    $r0 = COPY killed renamable $r17
    ADJCALLSTACKDOWN 0, 0, implicit-def $r29, implicit-def dead $r30, implicit killed $r31, implicit killed $r30, implicit $r29
    renamable $r16 = L2_loadri_io killed renamable $r16, 4 :: (load (s32) from %ir.cgep25)
    J2_call @fun_1, hexagoncsr, implicit-def dead $pc, implicit-def dead $r31, implicit $r29, implicit $r0, implicit-def $r29, implicit-def $r0
    renamable $p0 = C2_cmpgtu killed renamable $r0, killed renamable $r16
    ADJCALLSTACKUP 0, 0, implicit-def dead $r29, implicit-def dead $r30, implicit-def dead $r31, implicit killed $r29
    renamable $p1 = LDriw_pred %stack.0, 0 :: (load (s32) from %stack.0)
    renamable $p0 = C2_or killed renamable $p1, killed renamable $p0

  bb.7.fun_3.exit:
    successors: %bb.8(0x80000000)
    liveins: $p0

    renamable $r0 = C2_cmoveit renamable $p0, 1
    renamable $r0 = C2_cmoveif killed renamable $p0, 0, implicit killed renamable $r0(tied-def 0)

  bb.8.if.end12:
    liveins: $r0:0x0000000000000001

    PS_jmpret killed $r31, implicit-def dead $pc, implicit killed $r0

...