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0de6255877
We currently error in clang with:
"error: thread-local storage is unsupported for the current target", but we
can start to get the llvm level ready.
When compiling
template<typename T>
struct foo {
static __declspec(thread) int bar;
};
template<typename T>
__declspec(therad) int foo<T>::bar;
template struct foo<int>;
msvc produces
SECTION HEADER #3
.tls$ name
0 physical address
0 virtual address
4 size of raw data
12F file pointer to raw data (0000012F to 00000132)
0 file pointer to relocation table
0 file pointer to line numbers
0 number of relocations
0 number of line numbers
C0301040 flags
Initialized Data
COMDAT; sym= "public: static int foo<int>::bar" (?bar@?$foo@H@@2HA)
4 byte align
Read Write
gcc produces a ".data$__emutls_v.<symbol>" for the testcase with
__declspec(thread) replaced with thread_local.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@195849 91177308-0d34-0410-b5e6-96231b3b80d8
49 lines
1.4 KiB
LLVM
49 lines
1.4 KiB
LLVM
; Test that weak functions and globals are placed into selectany COMDAT
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; sections with the mangled name as suffix. Ensure that the weak linkage
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; type is not ignored by the backend if the section was specialized.
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;
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; RUN: llc -mtriple=i686-pc-win32 %s -o - | FileCheck %s --check-prefix=X86
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; RUN: llc -mtriple=i686-pc-mingw32 %s -o - | FileCheck %s --check-prefix=X86
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; RUN: llc -mtriple=x86_64-pc-win32 %s -o - | FileCheck %s --check-prefix=X64
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; RUN: llc -mtriple=x86_64-pc-mingw32 %s -o - | FileCheck %s --check-prefix=X64
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; Mangled function
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; X86: .section .text,"xr",discard,__Z3foo
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; X86: .globl __Z3foo
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;
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; X64: .section .text,"xr",discard,_Z3foo
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; X64: .globl _Z3foo
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define weak void @_Z3foo() {
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ret void
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}
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; Unmangled function
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; X86: .section .sect,"xr",discard,_f
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; X86: .globl _f
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;
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; X64: .section .sect,"xr",discard,f
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; X64: .globl f
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define weak void @f() section ".sect" {
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ret void
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}
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; Weak global
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; X86: .section .data,"r",discard,_a
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; X86: .globl _a
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; X86: .zero 12
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;
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; X64: .section .data,"r",discard,a
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; X64: .globl a
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; X64: .zero 12
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@a = weak unnamed_addr constant { i32, i32, i32 } { i32 0, i32 0, i32 0}, section ".data"
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; X86: .section .tls$,"w",discard,_b
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; X86: .globl _b
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; X86: .long 0
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;
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; X64: .section .tls$,"w",discard,b
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; X64: .globl b
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; X64: .long 0
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@b = weak_odr thread_local global i32 0, align 4
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