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6170134a1f
We cannot prepend __imp_ in the IR mangler because a function reference may be emitted unmangled in a constant initializer. The linker is expected to resolve such references to thunks. This is covered by the new test case. Strictly speaking we ought to emit two undefined symbols, one with __imp_ and one without, as we cannot know which symbol the final object file will refer to. However, this would require rather intrusive changes to IRObjectFile, and lld works fine without it for now. This reimplements r239437, which was reverted in r239502. Differential Revision: http://reviews.llvm.org/D10400 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239560 91177308-0d34-0410-b5e6-96231b3b80d8
64 lines
1.6 KiB
LLVM
64 lines
1.6 KiB
LLVM
; RUN: llc -mtriple i386-pc-win32 < %s | FileCheck %s
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; RUN: llc -mtriple i386-pc-mingw32 < %s | FileCheck %s
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;
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; RUN: llc -mtriple i386-pc-mingw32 -O0 < %s | FileCheck %s -check-prefix=FAST
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; PR6275
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;
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; RUN: opt -mtriple i386-pc-win32 -O3 -S < %s | FileCheck %s -check-prefix=OPT
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@Var1 = external dllimport global i32
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@Var2 = available_externally dllimport unnamed_addr constant i32 1
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declare dllimport void @fun()
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define available_externally dllimport void @inline1() {
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ret void
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}
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define available_externally dllimport void @inline2() alwaysinline {
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ret void
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}
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declare dllimport x86_stdcallcc void @stdfun() nounwind
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declare dllimport x86_fastcallcc void @fastfun() nounwind
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declare dllimport x86_thiscallcc void @thisfun() nounwind
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declare void @dummy(...)
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define void @use() nounwind {
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; CHECK: calll *__imp__fun
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; FAST: movl __imp__fun, [[R:%[a-z]{3}]]
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; FAST-NEXT: calll *[[R]]
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call void @fun()
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; CHECK: calll *__imp__inline1
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; CHECK: calll *__imp__inline2
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call void @inline1()
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call void @inline2()
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; CHECK: calll *__imp__stdfun@0
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; CHECK: calll *__imp_@fastfun@0
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; CHECK: calll *__imp__thisfun
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call void @stdfun()
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call void @fastfun()
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call void @thisfun()
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; available_externally uses go away
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; OPT-NOT: call void @inline1()
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; OPT-NOT: call void @inline2()
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; OPT-NOT: load i32, i32* @Var2
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; OPT: call void (...) @dummy(i32 %1, i32 1)
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; CHECK-DAG: movl __imp__Var1, [[R1:%[a-z]{3}]]
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; CHECK-DAG: movl __imp__Var2, [[R2:%[a-z]{3}]]
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%1 = load i32, i32* @Var1
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%2 = load i32, i32* @Var2
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call void(...) @dummy(i32 %1, i32 %2)
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ret void
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}
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; CHECK: _fp:
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; CHECK-NEXT: .long _fun
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@fp = constant void ()* @fun
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