llvm/lld/test/COFF/associative-comdat-mingw-i386.s
Martin Storsjö 343ffa70fc [LLD] [COFF] Fix mingw comdat associativity for leader symbols with a different name
For a weak symbol func in a comdat, the actual leader symbol ends up
named like .weak.func.default*. Likewise, for stdcall on i386, the symbol
may be named _func@4, while the section suffix only is "func", which the
previous implementation didn't handle.

This fixes unwinding through weak functions when using
-ffunction-sections in mingw environments.

Differential Revision: https://reviews.llvm.org/D84607
2020-07-27 17:32:08 +03:00

57 lines
1.4 KiB
ArmAsm

# REQUIRES: x86
# RUN: llvm-mc -triple=i686-windows-gnu %s -defsym stdcall=0 -filetype=obj -o %t.obj
# RUN: lld-link -lldmingw -entry:main %t.obj -out:%t.exe
# RUN: llvm-objdump -s %t.exe | FileCheck %s
# RUN: llvm-mc -triple=i686-windows-gnu %s -defsym stdcall=1 -filetype=obj -o %t.stdcall.obj
# RUN: lld-link -lldmingw -entry:main %t.stdcall.obj -out:%t.stdcall.exe
# RUN: llvm-objdump -s %t.stdcall.exe | FileCheck %s
# Check that the .eh_frame comdat was included, even if it had no symbols,
# due to associativity with the symbol _foo.
# CHECK: Contents of section .eh_fram:
# CHECK: 403000 42
.text
.def _main;
.scl 2;
.type 32;
.endef
.globl _main
.p2align 4, 0x90
_main:
.if stdcall==0
call _foo
.else
call _foo@0
.endif
ret
.section .eh_frame$foo,"dr"
.linkonce discard
.byte 0x42
.if stdcall==0
.def _foo;
.else
.def _foo@0;
.endif
.scl 2;
.type 32;
.endef
.if stdcall==0
.section .text$foo,"xr",discard,_foo
.globl _foo
.p2align 4
_foo:
.else
.section .text$foo,"xr",discard,_foo@0
.globl _foo@0
.p2align 4
_foo@0:
.endif
ret