tls-no-plt.ll
1.4 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
; RUN: llc < %s -mtriple=i386-linux-musl -relocation-model=pic -relax-elf-relocations=true | FileCheck --check-prefixes=CHECK,X86 %s
; RUN: llc < %s -mtriple=x86_64-linux-musl -relocation-model=pic -relax-elf-relocations=true | FileCheck --check-prefixes=CHECK,X64 %s
;; If GOTPCRELX is disabled, don't use GOT for __tls_get_addr to work around
;; a ld.bfd bug (binutils PR24784).
; RUN: llc < %s -mtriple=i386-linux-musl -relocation-model=pic | FileCheck --check-prefixes=CHECK,X86-PLT %s
; RUN: llc < %s -mtriple=x86_64-linux-musl -relocation-model=pic | FileCheck --check-prefixes=CHECK,X64-PLT %s
@gd = thread_local global i32 0
@ld = internal thread_local global i32 0
define i32* @get_gd() {
entry:
; CHECK-LABEL: get_gd:
; X86: leal gd@TLSGD(%ebx), %eax
; X86: calll *___tls_get_addr@GOT(%ebx)
; X86-PLT: calll ___tls_get_addr@PLT
; X64: leaq gd@TLSGD(%rip), %rdi
; X64: callq *__tls_get_addr@GOTPCREL(%rip)
; X64-PLT: callq __tls_get_addr@PLT
ret i32* @gd
}
define i32* @get_ld() {
; FIXME: This function uses a single thread-local variable, we might want to fall back to general-dynamic.
; CHECK-LABEL: get_ld:
; X86: leal ld@TLSLDM(%ebx), %eax
; X86: calll *___tls_get_addr@GOT(%ebx)
; X86-PLT: calll ___tls_get_addr@PLT
; X64: leaq ld@TLSLD(%rip), %rdi
; X64: callq *__tls_get_addr@GOTPCREL(%rip)
; X64-PLT: callq __tls_get_addr@PLT
ret i32* @ld
}
!llvm.module.flags = !{!1}
!1 = !{i32 7, !"RtLibUseGOT", i32 1}