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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
104 lines
2.4 KiB
LLVM
104 lines
2.4 KiB
LLVM
; RUN: llc -mtriple x86_64-pc-win32 < %s | FileCheck -check-prefix=CHECK -check-prefix=WIN32 %s
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; RUN: llc -mtriple x86_64-pc-mingw32 < %s | FileCheck -check-prefix=CHECK -check-prefix=MINGW %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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; 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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@blob = global [6 x i8] c"\B8*\00\00\00\C3", section ".text", align 16
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@blob_alias = dllexport alias bitcast ([6 x i8]* @blob to i32 ()*)
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; CHECK: .section .drectve
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; WIN32: /EXPORT:f1
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; WIN32-SAME: /EXPORT:f2
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; WIN32-SAME: /EXPORT:lnk1
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; WIN32-SAME: /EXPORT:lnk2
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; WIN32-SAME: /EXPORT:weak1
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; WIN32-SAME: /EXPORT:Var1,DATA
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; WIN32-SAME: /EXPORT:Var2,DATA
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; WIN32-SAME: /EXPORT:Var3,DATA
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; WIN32-SAME: /EXPORT:WeakVar1,DATA
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; WIN32-SAME: /EXPORT:WeakVar2,DATA
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; WIN32-SAME: /EXPORT:alias
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; WIN32-SAME: /EXPORT:alias2
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; WIN32-SAME: /EXPORT:alias3
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; WIN32-SAME: /EXPORT:weak_alias
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; WIN32-SAME: /EXPORT:blob_alias
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; MINGW: -export:f1
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; MINGW-SAME: -export:f2
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; MINGW-SAME: -export:lnk1
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; MINGW-SAME: -export:lnk2
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; MINGW-SAME: -export:weak1
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; MINGW-SAME: -export:Var1,data
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; MINGW-SAME: -export:Var2,data
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; MINGW-SAME: -export:Var3,data
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; MINGW-SAME: -export:WeakVar1,data
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; MINGW-SAME: -export:WeakVar2,data
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; MINGW-SAME: -export:alias
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; MINGW-SAME: -export:alias2
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; MINGW-SAME: -export:alias3
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; MINGW-SAME: -export:weak_alias
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; MINGW-SAME: -export:blob_alias"
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