143133fe68
This redoes the fix from 3ab6209a3f93bdbeec8e9b9fcc00a9a4980915ff differently, without the unwanted effect of preserving unnecessary `__imp_` prefixed symbols. If the referencing object is a regular object, the `__imp_` symbol will have `isUsedInRegularObj` set on it from that already. If the referencing object is an LTO object, we set `isUsedInRegularObj` for any symbol starting with `__imp_`. If the object file defining the `__imp_` symbol is a regular object, the `isUsedInRegularObj` flag has no effect. If it is an LTO object, it causes the symbol to be preserved.
72 lines
1.7 KiB
LLVM
72 lines
1.7 KiB
LLVM
; REQUIRES: x86
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; RUN: rm -rf %t.dir
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; RUN: split-file %s %t.dir
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; RUN: llvm-as %t.dir/main.ll -o %t.main.obj
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; RUN: llvm-as %t.dir/other1.ll -o %t.other1.obj
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; RUN: llvm-as %t.dir/other2.ll -o %t.other2.obj
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; RUN: lld-link /entry:entry %t.main.obj %t.other1.obj /out:%t1.exe /subsystem:console /debug:symtab
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;; Check that we don't retain __imp_ prefixed symbols we don't need.
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; RUN: llvm-nm %t1.exe | FileCheck %s
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; CHECK-NOT: __imp_unusedFunc
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; RUN: lld-link /entry:entry %t.main.obj %t.other2.obj /out:%t2.exe /subsystem:console
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;--- main.ll
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target datalayout = "e-m:w-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-w64-windows-gnu"
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define void @entry() {
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entry:
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tail call void @importedFunc()
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tail call void @other()
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ret void
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}
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declare dllimport void @importedFunc()
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declare void @other()
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;--- other1.ll
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target datalayout = "e-m:w-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-w64-windows-gnu"
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@__imp_importedFunc = global ptr @importedFuncReplacement
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define internal void @importedFuncReplacement() {
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entry:
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ret void
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}
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@__imp_unusedFunc = global ptr @unusedFuncReplacement
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define internal void @unusedFuncReplacement() {
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entry:
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ret void
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}
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define void @other() {
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entry:
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ret void
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}
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;--- other2.ll
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target datalayout = "e-m:w-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-w64-windows-gnu"
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@__imp_importedFunc = global ptr @importedFunc
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; Test with two external symbols with the same name, with/without the __imp_
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; prefix.
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define void @importedFunc() {
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entry:
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ret void
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}
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define void @other() {
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entry:
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ret void
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}
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