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d3c303721f
This change unifies how LTOModule and the backend obtain linker flags for globals: via a new TargetLoweringObjectFile member function named emitLinkerFlagsForGlobal. A new function LTOModule::getLinkerOpts() returns the list of linker flags as a single concatenated string. This change affects the C libLTO API: the function lto_module_get_*deplibs now exposes an empty list, and lto_module_get_*linkeropts exposes a single element which combines the contents of all observed flags. libLTO should never have tried to parse the linker flags; it is the linker's job to do so. Because linkers will need to be able to parse flags in regular object files, it makes little sense for libLTO to have a redundant mechanism for doing so. The new API is compatible with the old one. It is valid for a user to specify multiple linker flags in a single pragma directive like this: #pragma comment(linker, "/defaultlib:foo /defaultlib:bar") The previous implementation would not have exposed either flag via lto_module_get_*deplibs (as the test in TargetLoweringObjectFileCOFF::getDepLibFromLinkerOpt was case sensitive) and would have exposed "/defaultlib:foo /defaultlib:bar" as a single flag via lto_module_get_*linkeropts. This may have been a bug in the implementation, but it does give us a chance to fix the interface. Differential Revision: http://reviews.llvm.org/D10548 llvm-svn: 241010
130 lines
3.1 KiB
LLVM
130 lines
3.1 KiB
LLVM
; RUN: llc -mtriple i386-pc-win32 < %s \
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; RUN: | FileCheck -check-prefix CHECK -check-prefix CHECK-CL %s
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; RUN: llc -mtriple i386-pc-mingw32 < %s \
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; RUN: | FileCheck -check-prefix CHECK -check-prefix CHECK-GCC %s
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; RUN: llc -mtriple i686-pc-cygwin %s -o - \
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; RUN: | FileCheck -check-prefix CHECK -check-prefix CHECK-GCC %s
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; CHECK: .text
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define void @notExported() {
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ret void
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}
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; CHECK: .globl _f1
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define dllexport void @f1() {
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ret void
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}
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; CHECK: .globl _f2
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define dllexport void @f2() unnamed_addr {
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ret void
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}
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declare dllexport void @not_defined()
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; CHECK: .globl _stdfun@0
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define dllexport x86_stdcallcc void @stdfun() nounwind {
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ret void
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}
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; CHECK: .globl @fastfun@0
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define dllexport x86_fastcallcc i32 @fastfun() nounwind {
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ret i32 0
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}
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; CHECK: .globl _thisfun
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define dllexport x86_thiscallcc void @thisfun() nounwind {
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ret void
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}
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; CHECK: .globl _lnk1
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define linkonce_odr dllexport void @lnk1() {
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ret void
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}
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; CHECK: .globl _lnk2
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define linkonce_odr dllexport void @lnk2() alwaysinline {
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ret void
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}
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; CHECK: .globl _weak1
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define weak_odr dllexport void @weak1() {
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ret void
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}
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; CHECK: .data
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; CHECK: .globl _Var1
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@Var1 = dllexport global i32 1, align 4
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; CHECK: .rdata,"dr"
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; CHECK: .globl _Var2
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@Var2 = dllexport unnamed_addr constant i32 1
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; CHECK: .comm _Var3
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@Var3 = common dllexport global i32 0, align 4
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; CHECK: .globl _WeakVar1
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@WeakVar1 = weak_odr dllexport global i32 1, align 4
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; CHECK: .globl _WeakVar2
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@WeakVar2 = weak_odr dllexport unnamed_addr constant i32 1
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; CHECK: .globl _alias
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; CHECK: _alias = _notExported
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@alias = dllexport alias void()* @notExported
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; CHECK: .globl _alias2
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; CHECK: _alias2 = _f1
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@alias2 = dllexport alias void()* @f1
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; CHECK: .globl _alias3
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; CHECK: _alias3 = _notExported
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@alias3 = dllexport alias void()* @notExported
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; CHECK: .weak _weak_alias
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; CHECK: _weak_alias = _f1
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@weak_alias = weak_odr dllexport alias void()* @f1
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; CHECK: .section .drectve
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; CHECK-CL-NOT: not_exported
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; CHECK-CL: /EXPORT:_f1
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; CHECK-CL-SAME: /EXPORT:_f2
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; CHECK-CL-SAME: /EXPORT:_stdfun@0
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; CHECK-CL-SAME: /EXPORT:@fastfun@0
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; CHECK-CL-SAME: /EXPORT:_thisfun
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; CHECK-CL-SAME: /EXPORT:_lnk1
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; CHECK-CL-SAME: /EXPORT:_lnk2
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; CHECK-CL-SAME: /EXPORT:_weak1
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; CHECK-CL-SAME: /EXPORT:_Var1,DATA
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; CHECK-CL-SAME: /EXPORT:_Var2,DATA
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; CHECK-CL-SAME: /EXPORT:_Var3,DATA
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; CHECK-CL-SAME: /EXPORT:_WeakVar1,DATA
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; CHECK-CL-SAME: /EXPORT:_WeakVar2,DATA
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; CHECK-CL-SAME: /EXPORT:_alias
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; CHECK-CL-SAME: /EXPORT:_alias2
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; CHECK-CL-SAME: /EXPORT:_alias3
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; CHECK-CL-SAME: /EXPORT:_weak_alias"
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; CHECK-CL-NOT: not_exported
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; CHECK-GCC-NOT: not_exported
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; CHECK-GCC: -export:f1
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; CHECK-GCC-SAME: -export:f2
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; CHECK-GCC-SAME: -export:stdfun@0
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; CHECK-GCC-SAME: -export:@fastfun@0
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; CHECK-GCC-SAME: -export:thisfun
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; CHECK-GCC-SAME: -export:lnk1
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; CHECK-GCC-SAME: -export:lnk2
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; CHECK-GCC-SAME: -export:weak1
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; CHECK-GCC-SAME: -export:Var1,data
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; CHECK-GCC-SAME: -export:Var2,data
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; CHECK-GCC-SAME: -export:Var3,data
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; CHECK-GCC-SAME: -export:WeakVar1,data
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; CHECK-GCC-SAME: -export:WeakVar2,data
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; CHECK-GCC-SAME: -export:alias
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; CHECK-GCC-SAME: -export:alias2
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; CHECK-GCC-SAME: -export:alias3
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; CHECK-GCC-SAME: -export:weak_alias"
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; CHECK-GCC-NOT: not_exported
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