test/DebugInfo/MIR/Mips/dbg-call-site-param-addiu.mir

## Test mips32:
# RUN: llc -mtriple mips-linux-gnu -emit-call-site-info -start-after=machineverifier -filetype=obj %s -o -| llvm-dwarfdump -| FileCheck %s
## Test mipsel:
# RUN: llc -mtriple mipsel-linux-gnu -emit-call-site-info -start-after=machineverifier -filetype=obj %s -o -| llvm-dwarfdump -| FileCheck %s

## Following code is used for producing this test case.
##
## extern int fn1(int,int,int);
## extern void clobber();
## int fn2(int a) {
##   clobber();
##   int local = fn1(44, a, a+10);
##   if (local > 10)
##     return local + 10;
##   return local;
## }
## Check that parameters value loaded by instruction ADDiu/DADDiu is
## interpreted correctly.

## Test mips32:
# CHECK: DW_TAG_GNU_call_site
# CHECK-NEXT: DW_AT_abstract_origin {{.*}} "fn1"
# CHECK: DW_TAG_GNU_call_site_parameter
# CHECK-NEXT:   DW_AT_location      (DW_OP_reg5 A1_64)
# CHECK-NEXT:   DW_AT_GNU_call_site_value   (DW_OP_breg16 S0_64+0)
# CHECK-EMPTY: 
# CHECK-NEXT: DW_TAG_GNU_call_site_parameter
# CHECK-NEXT:   DW_AT_location      (DW_OP_reg4 A0_64)
# CHECK-NEXT:   DW_AT_GNU_call_site_value   (DW_OP_constu 0x2c)
# CHECK-EMPTY: 
# CHECK-NEXT: DW_TAG_GNU_call_site_parameter
# CHECK-NEXT:   DW_AT_location      (DW_OP_reg6 A2_64)
# CHECK-NEXT:   DW_AT_GNU_call_site_value   (DW_OP_breg16 S0_64+10)
--- |
  ; ModuleID = 'm.ll'
  source_filename = "m.c"
  target datalayout = "E-m:m-p:32:32-i8:8:32-i16:16:32-i64:64-n32-S64"
  target triple = "mips-unknown-linux-gnu"

  ; Function Attrs: nounwind
  define dso_local i32 @fn2(i32 signext %a) local_unnamed_addr !dbg !12 {
  entry:
    call void @llvm.dbg.value(metadata i32 %a, metadata !16, metadata !DIExpression()), !dbg !18
    tail call void bitcast (void (...)* @clobber to void ()*)(), !dbg !18
    %add = add nsw i32 %a, 10, !dbg !18
    %call = tail call i32 @fn1(i32 signext 44, i32 signext %a, i32 signext %add), !dbg !18
    call void @llvm.dbg.value(metadata i32 %call, metadata !17, metadata !DIExpression()), !dbg !18
    %cmp = icmp sgt i32 %call, 10, !dbg !22
    %add1 = add nsw i32 %call, 10, !dbg !18
    %retval.0 = select i1 %cmp, i32 %add1, i32 %call, !dbg !18
    ret i32 %retval.0, !dbg !18
  }
  
  declare dso_local void @clobber(...) local_unnamed_addr
  
  declare !dbg !4 dso_local i32 @fn1(i32 signext, i32 signext, i32 signext) local_unnamed_addr
  
  ; Function Attrs: nounwind readnone speculatable willreturn
  declare void @llvm.dbg.value(metadata, metadata, metadata)
  
  !llvm.dbg.cu = !{!0}
  !llvm.module.flags = !{!8, !9, !10}
  !llvm.ident = !{!11}
  
  !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 11.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3, splitDebugInlining: false, nameTableKind: None)
  !1 = !DIFile(filename: "m.c", directory: "/dir")
  !2 = !{}
  !3 = !{!4}
  !4 = !DISubprogram(name: "fn1", scope: !1, file: !1, line: 1, type: !5, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2)
  !5 = !DISubroutineType(types: !6)
  !6 = !{!7, !7, !7, !7}
  !7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
  !8 = !{i32 7, !"Dwarf Version", i32 4}
  !9 = !{i32 2, !"Debug Info Version", i32 3}
  !10 = !{i32 1, !"wchar_size", i32 4}
  !11 = !{!"clang version 11.0.0"}
  !12 = distinct !DISubprogram(name: "fn2", scope: !1, file: !1, line: 3, type: !13, scopeLine: 3, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !15)
  !13 = !DISubroutineType(types: !14)
  !14 = !{!7, !7}
  !15 = !{!16, !17}
  !16 = !DILocalVariable(name: "a", arg: 1, scope: !12, file: !1, line: 3, type: !7)
  !17 = !DILocalVariable(name: "local", scope: !12, file: !1, line: 5, type: !7)
  !18 = !DILocation(line: 0, scope: !12)
  !22 = !DILocation(line: 6, column: 14, scope: !23)
  !23 = distinct !DILexicalBlock(scope: !12, file: !1, line: 6, column: 8)

...
---
name:            fn2
alignment:       4
liveins:
  - { reg: '$a0', virtual-reg: '' }
stack:
  - { id: 0, name: '', type: spill-slot, offset: -4, size: 4, alignment: 4, 
      stack-id: default, callee-saved-register: '$ra', callee-saved-restored: true, 
      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: '$s0', callee-saved-restored: true, 
      debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
callSites:
  - { bb: 0, offset: 8, fwdArgRegs: [] }
  - { bb: 0, offset: 12, fwdArgRegs: 
      - { arg: 0, reg: '$a0' }
      - { arg: 1, reg: '$a1' }
      - { arg: 2, reg: '$a2' } }
body:             |
  bb.0.entry:
    DBG_VALUE $a0, $noreg, !16, !DIExpression(), debug-location !18
    $sp = ADDiu $sp, -24
    CFI_INSTRUCTION def_cfa_offset 24
    SW killed $ra, $sp, 20 :: (store 4 into %stack.0)
    SW killed $s0, $sp, 16 :: (store 4 into %stack.1)
    CFI_INSTRUCTION offset $ra_64, -4
    CFI_INSTRUCTION offset $s0_64, -8
    DBG_VALUE $s0, $noreg, !16, !DIExpression(), debug-location !18
    JAL @clobber, csr_o32, implicit-def dead $ra, implicit-def $sp, debug-location !18 {
      $s0 = OR $a0, $zero
    }
    renamable $a2 = nsw ADDiu renamable $s0, 10, debug-location !18
    $a0 = ADDiu $zero, 44, debug-location !18
    JAL @fn1, csr_o32, implicit-def dead $ra, implicit $a0, implicit killed $a1, implicit $a2, implicit-def $sp, implicit-def $v0, debug-location !18 {
      $a1 = OR killed $s0, $zero, debug-location !18
    }
    DBG_VALUE $v0, $noreg, !17, !DIExpression(), debug-location !18
    renamable $at = SLTi renamable $v0, 11, debug-location !18
    renamable $v1 = nsw ADDiu renamable $v0, 10, debug-location !18
    renamable $v0 = MOVZ_I_I killed renamable $v1, killed renamable $at, killed renamable $v0, debug-location !18
    $s0 = LW $sp, 16, debug-location !18 :: (load 4 from %stack.1)
    $ra = LW $sp, 20, debug-location !18 :: (load 4 from %stack.0)
    PseudoReturn undef $ra, implicit $v0, debug-location !18 {
      $sp = ADDiu $sp, 24
    }