# RUN: llc -mtriple aarch64-linux-gnu -debug-entry-values -start-after=machineverifier -filetype=obj %s -o -| llvm-dwarfdump -| FileCheck %s
# Following code is used for producing this test case. Note that
# some of argument loading instruction are modified in order to
# cover certain cases.
#
# extern int func2(int,int,int*);
# int func1(int arg1, int arg2, int arg3) {
#   int a = func2(arg1 + 2, arg2 - 4, &arg3);
#   a += func2(arg3 - 16, arg1 + 8, &a);
#   return a++;
# }
#
# CHECK: DW_TAG_GNU_call_site
# CHECK-NEXT: DW_AT_abstract_origin {{.*}} "func2"
# CHECK: DW_TAG_GNU_call_site_parameter
# CHECK-NOT:   DW_AT_location      (DW_OP_reg2 W0)
# CHECK-NEXT:   DW_AT_location      (DW_OP_reg2 W2)
# CHECK-NEXT:   DW_AT_GNU_call_site_value   (DW_OP_fbreg +28)
# CHECK-EMPTY: 
# CHECK-NEXT: DW_TAG_GNU_call_site_parameter
# CHECK-NEXT:   DW_AT_location      (DW_OP_reg1 W1)
# CHECK-NEXT:   DW_AT_GNU_call_site_value   (DW_OP_breg19 W19-4)
# CHECK: DW_TAG_GNU_call_site
# CHECK-NEXT: DW_AT_abstract_origin {{.*}} "func2")
# CHECK-NEXT: DW_AT_low_pc
# CHECK-EMPTY: 
# CHECK-NEXT: DW_TAG_GNU_call_site_parameter
# CHECK-NEXT:   DW_AT_location      (DW_OP_reg0 W0)
# CHECK-NEXT:   DW_AT_GNU_call_site_value   (DW_OP_lit13)
# CHECK-EMPTY: 
# CHECK-NEXT: DW_TAG_GNU_call_site_parameter
# W2 loads memory location. We can't rely that memory location won't be changed.
# CHECK-NOT:   DW_AT_location      (DW_OP_reg2 W2)
# CHECK-NEXT:   DW_AT_location      (DW_OP_reg1 W1)
# CHECK-NEXT:   DW_AT_GNU_call_site_value   (DW_OP_constu 0xc0)
--- |
  ; ModuleID = 'describe-call-pram-load-instruction.c'
  source_filename = "describe-call-pram-load-instruction.c"
  target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
  target triple = "aarch64-unknown-linux-gnu"
  
  ; Function Attrs: nounwind
  define dso_local i32 @func1(i32 %arg1, i32 %arg2, i32 %arg3) local_unnamed_addr #0 !dbg !13 {
  entry:
    %arg3.addr = alloca i32, align 4
    %a = alloca i32, align 4
    call void @llvm.dbg.value(metadata i32 %arg1, metadata !17, metadata !DIExpression()), !dbg !21
    call void @llvm.dbg.value(metadata i32 %arg2, metadata !18, metadata !DIExpression()), !dbg !21
    call void @llvm.dbg.value(metadata i32 %arg3, metadata !19, metadata !DIExpression()), !dbg !21
    store i32 %arg3, i32* %arg3.addr, align 4
    %0 = bitcast i32* %a to i8*, !dbg !21
    call void @llvm.lifetime.start.p0i8(i64 4, i8* nonnull %0), !dbg !21
    %add = add nsw i32 %arg1, 2, !dbg !21
    %sub = add nsw i32 %arg2, -4, !dbg !21
    call void @llvm.dbg.value(metadata i32* %arg3.addr, metadata !19, metadata !DIExpression(DW_OP_deref)), !dbg !21
    %call = call i32 @func2(i32 %add, i32 %sub, i32* nonnull %arg3.addr), !dbg !21
    call void @llvm.dbg.value(metadata i32 %call, metadata !20, metadata !DIExpression()), !dbg !21
    store i32 %call, i32* %a, align 4, !dbg !21
    %1 = load i32, i32* %arg3.addr, align 4, !dbg !21
    call void @llvm.dbg.value(metadata i32 %1, metadata !19, metadata !DIExpression()), !dbg !21
    %sub1 = add nsw i32 %1, -16, !dbg !21
    %add2 = add nsw i32 %arg1, 8, !dbg !21
    call void @llvm.dbg.value(metadata i32* %a, metadata !20, metadata !DIExpression(DW_OP_deref)), !dbg !21
    %call3 = call i32 @func2(i32 %sub1, i32 %add2, i32* nonnull %a), !dbg !21
    %2 = load i32, i32* %a, align 4, !dbg !21
    call void @llvm.dbg.value(metadata i32 %2, metadata !20, metadata !DIExpression()), !dbg !21
    %add4 = add nsw i32 %2, %call3, !dbg !21
    call void @llvm.dbg.value(metadata i32 %add4, metadata !20, metadata !DIExpression(DW_OP_plus_uconst, 1, DW_OP_stack_value)), !dbg !21
    call void @llvm.lifetime.end.p0i8(i64 4, i8* nonnull %0), !dbg !21
    ret i32 %add4, !dbg !21
  }
  
  ; Function Attrs: argmemonly nounwind willreturn
  declare void @llvm.lifetime.start.p0i8(i64 immarg, i8* nocapture)
  
  declare !dbg !4 dso_local i32 @func2(i32, i32, i32*) local_unnamed_addr
  
  ; Function Attrs: argmemonly nounwind willreturn
  declare void @llvm.lifetime.end.p0i8(i64 immarg, i8* nocapture)
  
  ; Function Attrs: nounwind readnone speculatable willreturn
  declare void @llvm.dbg.value(metadata, metadata, metadata)
  
  ; Function Attrs: nounwind
  declare void @llvm.stackprotector(i8*, i8**)
  
  attributes #0 = { "frame-pointer"="all" }
  
  !llvm.dbg.cu = !{!0}
  !llvm.module.flags = !{!9, !10, !11}
  !llvm.ident = !{!12}
  
  !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 10.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3, nameTableKind: None)
  !1 = !DIFile(filename: "describe-call-pram-load-instruction.c", directory: "/")
  !2 = !{}
  !3 = !{!4}
  !4 = !DISubprogram(name: "func2", scope: !1, file: !1, line: 8, type: !5, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2)
  !5 = !DISubroutineType(types: !6)
  !6 = !{!7, !7, !7, !8}
  !7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
  !8 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !7, size: 64)
  !9 = !{i32 2, !"Dwarf Version", i32 4}
  !10 = !{i32 2, !"Debug Info Version", i32 3}
  !11 = !{i32 1, !"wchar_size", i32 4}
  !12 = !{!"clang version 10.0.0 "}
  !13 = distinct !DISubprogram(name: "func1", scope: !1, file: !1, line: 9, type: !14, scopeLine: 9, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !16)
  !14 = !DISubroutineType(types: !15)
  !15 = !{!7, !7, !7, !7}
  !16 = !{!17, !18, !19, !20}
  !17 = !DILocalVariable(name: "arg1", arg: 1, scope: !13, file: !1, line: 9, type: !7)
  !18 = !DILocalVariable(name: "arg2", arg: 2, scope: !13, file: !1, line: 9, type: !7)
  !19 = !DILocalVariable(name: "arg3", arg: 3, scope: !13, file: !1, line: 9, type: !7)
  !20 = !DILocalVariable(name: "a", scope: !13, file: !1, line: 10, type: !7)
  !21 = !DILocation(line: 0, scope: !13)

...
---
name:            func1
frameInfo:
  adjustsStack:    true
  hasCalls:        true
stack:
  - { id: 0, name: arg3.addr, offset: -4, size: 4, alignment: 4, local-offset: -4 }
  - { id: 1, name: a, offset: -8, size: 4, alignment: 4, local-offset: -8 }
  - { id: 2, type: spill-slot, offset: -16, size: 8, alignment: 16, callee-saved-register: '$x19' }
  - { id: 3, type: spill-slot, offset: -24, size: 8, alignment: 8, callee-saved-register: '$lr' }
  - { id: 4, type: spill-slot, offset: -32, size: 8, alignment: 8, callee-saved-register: '$fp' }
callSites:
  - { bb: 0, offset: 20, fwdArgRegs: 
      - { arg: 0, reg: '$w0' }
      - { arg: 1, reg: '$w1' }
      - { arg: 2, reg: '$x2' } }
  - { bb: 0, offset: 29, fwdArgRegs: 
      - { arg: 0, reg: '$w0' }
      - { arg: 1, reg: '$w1' }
      - { arg: 2, reg: '$x2' } }
body:             |
  bb.0.entry:
    liveins: $w0, $w1, $w2, $lr, $x19
  
    DBG_VALUE $w0, $noreg, !17, !DIExpression(), debug-location !21
    DBG_VALUE $w1, $noreg, !18, !DIExpression(), debug-location !21
    DBG_VALUE $w1, $noreg, !18, !DIExpression(), debug-location !21
    DBG_VALUE $w2, $noreg, !19, !DIExpression(), debug-location !21
    DBG_VALUE $w2, $noreg, !19, !DIExpression(), debug-location !21
    early-clobber $sp = frame-setup STPXpre $fp, killed $lr, $sp, -4 :: (store 8 into %stack.4), (store 8 into %stack.3)
    frame-setup STRXui killed $x19, $sp, 2 :: (store 8 into %stack.2)
    $fp = frame-setup ADDXri $sp, 0, 0
    frame-setup CFI_INSTRUCTION def_cfa $w29, 32
    frame-setup CFI_INSTRUCTION offset $w19, -16
    frame-setup CFI_INSTRUCTION offset $w30, -24
    frame-setup CFI_INSTRUCTION offset $w29, -32
    $w19 = ORRWrs $wzr, $w0, 0
    DBG_VALUE $w19, $noreg, !17, !DIExpression(), debug-location !21
    STRWui killed renamable $w2, $fp, 7 :: (store 4 into %ir.arg3.addr)
    renamable $w0 = nsw ADDWri $w0, 2, 0, debug-location !21
    renamable $w1 = nsw SUBWri renamable $w19, 4, 0, debug-location !21
    DBG_VALUE $w1, $noreg, !18, !DIExpression(DW_OP_LLVM_entry_value, 1), debug-location !21
    DBG_VALUE $fp, $noreg, !19, !DIExpression(DW_OP_plus_uconst, 28, DW_OP_deref), debug-location !21
    $x2 = ADDXri $fp, 28, 0, debug-location !21
    BL @func2, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit killed $w0, implicit killed $w1, implicit killed $x2, implicit-def $sp, implicit-def $w0, debug-location !21
    DBG_VALUE $w0, $noreg, !20, !DIExpression(), debug-location !21
    renamable $w8 = LDRWui $fp, 7, debug-location !21 :: (dereferenceable load 4 from %ir.arg3.addr)
    DBG_VALUE $w8, $noreg, !19, !DIExpression(), debug-location !21
    STRWui killed renamable $w0, $fp, 6, debug-location !21 :: (store 4 into %ir.a)
    renamable $w1 = nsw MOVZWi 12, 4
    DBG_VALUE $fp, $noreg, !20, !DIExpression(DW_OP_plus_uconst, 24, DW_OP_deref), debug-location !21
    $x2 = LDRXui $fp, 24, debug-location !21
    renamable $w0 = nsw MOVZWi 13, 0
    BL @func2, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit killed $w0, implicit killed $w1, implicit killed $x2, implicit-def $sp, implicit-def $w0, debug-location !21
    renamable $w8 = LDRWui $fp, 6, debug-location !21 :: (dereferenceable load 4 from %ir.a)
    DBG_VALUE $w8, $noreg, !20, !DIExpression(), debug-location !21
    $x19 = frame-destroy LDRXui $sp, 2, debug-location !21 :: (load 8 from %stack.2)
    DBG_VALUE $w0, $noreg, !17, !DIExpression(DW_OP_LLVM_entry_value, 1), debug-location !21
    $w0 = ADDWrs killed renamable $w8, killed renamable $w0, 0, debug-location !21
    DBG_VALUE $w0, $noreg, !20, !DIExpression(DW_OP_plus_uconst, 1, DW_OP_stack_value), debug-location !21
    early-clobber $sp, $fp, $lr = frame-destroy LDPXpost $sp, 4, debug-location !21 :: (load 8 from %stack.4), (load 8 from %stack.3)
    RET undef $lr, implicit killed $w0, debug-location !21

...