[PATCH] Bug 12843: put ELF reloc section against section with template function instantiation in the same COMDAT group

[Игорь Пашев]

Am I doing it right? :-)

The code was generated via "clang++ -S -emit-llvm a.cpp"

test/MC/ELF/comdat-reloc.ll:

; RUN: llc -filetype=obj -mtriple x86_64-pc-linux-gnu %s -o - |
llvm-readobj -s -section-symbols | FileCheck %s

%struct.S = type { i8 }

define void @_Z3bazv() #0 {
entry:
  %call = call i32 @_Z3barIiEiT_(i32 10)
  ret void
}

define linkonce_odr i32 @_Z3barIiEiT_(i32 %t) #0 {
entry:
  %t.addr = alloca i32, align 4
  %s = alloca %struct.S, align 1
  %cleanup.dest.slot = alloca i32
  store i32 %t, i32* %t.addr, align 4
  %0 = load i32* %t.addr, align 4
  %mul = mul nsw i32 %0, 3
  store i32 1, i32* %cleanup.dest.slot
  call void @_ZN1SD1Ev(%struct.S* %s)
  ret i32 %mul
}

declare void @_ZN1SD1Ev(%struct.S*) #0

; CHECK:  Section {
; CHECK:    Index: 6
; CHECK-NEXT:    Name: .text._Z3barIiEiT_ (92)
; CHECK-NEXT:    Type: SHT_PROGBITS (0x1)
; CHECK-NEXT:    Flags [ (0x206)
; CHECK-NEXT:      SHF_ALLOC (0x2)
; CHECK-NEXT:      SHF_EXECINSTR (0x4)
; CHECK-NEXT:      SHF_GROUP (0x200)
; CHECK-NEXT:    ]
; CHECK-NEXT:    Address: 0x0
; CHECK-NEXT:    Offset: 0x60
; CHECK-NEXT:    Size: 38
; CHECK-NEXT:    Link: 0
; CHECK-NEXT:    Info: 0
; CHECK-NEXT:    AddressAlignment: 16
; CHECK-NEXT:    EntrySize: 0
; CHECK-NEXT:    Symbols [
; CHECK-NEXT:      Symbol {
; CHECK-NEXT:        Name: .text._Z3barIiEiT_ (0)
; CHECK-NEXT:        Value: 0x0
; CHECK-NEXT:        Size: 0
; CHECK-NEXT:        Binding: Local (0x0)
; CHECK-NEXT:        Type: Section (0x3)
; CHECK-NEXT:        Other: 0
; CHECK-NEXT:        Section: .text._Z3barIiEiT_ (0x6)
; CHECK-NEXT:      }
; CHECK-NEXT:      Symbol {
; CHECK-NEXT:        Name: _Z3barIiEiT_ (37)
; CHECK-NEXT:        Value: 0x0
; CHECK-NEXT:        Size: 38
; CHECK-NEXT:        Binding: Weak (0x2)
; CHECK-NEXT:        Type: Function (0x2)
; CHECK-NEXT:        Other: 0
; CHECK-NEXT:        Section: .text._Z3barIiEiT_ (0x6)
; CHECK-NEXT:      }
; CHECK-NEXT:    ]
; CHECK-NEXT:  }
; CHECK-NEXT:  Section {
; CHECK-NEXT:    Index: 7
; CHECK-NEXT:    Name: .rela.text._Z3barIiEiT_ (87)
; CHECK-NEXT:    Type: SHT_RELA (0x4)
; CHECK-NEXT:    Flags [ (0x200)
; CHECK-NEXT:      SHF_GROUP (0x200)
; CHECK-NEXT:    ]
; CHECK-NEXT:    Address: 0x0
; CHECK-NEXT:    Offset: 0x638
; CHECK-NEXT:    Size: 24
; CHECK-NEXT:    Link: 12
; CHECK-NEXT:    Info: 6
; CHECK-NEXT:    AddressAlignment: 8
; CHECK-NEXT:    EntrySize: 24
; CHECK-NEXT:    Symbols [
; CHECK-NEXT:    ]
; CHECK-NEXT:  }