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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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