test/MC/COFF/weak-symbol.ll

; Test that weak functions and globals are placed into selectany COMDAT
; sections with the mangled name as suffix. Ensure that the weak linkage
; type is not ignored by the backend if the section was specialized.
;
; RUN: llc -mtriple=i686-pc-win32 %s     -o - | FileCheck %s --check-prefix=X86
; RUN: llc -mtriple=i686-pc-mingw32 %s   -o - | FileCheck %s --check-prefix=X86
; RUN: llc -mtriple=x86_64-pc-win32 %s   -o - | FileCheck %s --check-prefix=X64
; RUN: llc -mtriple=x86_64-pc-mingw32 %s -o - | FileCheck %s --check-prefix=X64

; Mangled function
; X86: .section .text$_Z3foo
; X86: .linkonce discard
; X86: .globl __Z3foo
;
; X64: .section .text$_Z3foo
; X64: .linkonce discard
; X64: .globl _Z3foo
define weak void @_Z3foo() {
  ret void
}

; Unmangled function
; X86: .section .sect$f
; X86: .linkonce discard
; X86: .globl _f
;
; X64: .section .sect$f
; X64: .linkonce discard
; X64: .globl f
define weak void @f() section ".sect" {
  ret void
}

; Weak global
; X86: .section .data$a
; X86: .linkonce discard
; X86: .globl _a
; X86: .zero 12
;
; X64: .section .data$a
; X64: .linkonce discard
; X64: .globl a
; X64: .zero 12
@a = weak unnamed_addr constant { i32, i32, i32 } { i32 0, i32 0, i32 0}, section ".data"