e776dd9ca2
If the LowerTypeTests pass decides to add a function to a jump table for CFI, it will add its name to the set cfiFunctionDefs, which among other things will cause the function to be renamed in the ThinLTO backend. One other thing that we must do with such functions is to not internalize them, because the jump table in the full LTO object will contain a reference to the actual function body in the ThinLTO object. This patch handles that by ensuring that we export any functions whose names appear in the cfiFunctionDefs set. Fixes PR33831. Differential Revision: https://reviews.llvm.org/D35605 llvm-svn: 308504
33 lines
829 B
LLVM
33 lines
829 B
LLVM
; Test that we do not internalize functions that appear in the CFI jump table in
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; the full LTO object file; any such functions will be referenced by the jump
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; table.
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; RUN: opt -thinlto-bc -o %t %s
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; RUN: llvm-lto2 run -o %t2 -r %t,f1,p -r %t,f2,p -r %t,_start,px %t -save-temps
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; RUN: llvm-dis %t2.1.2.internalize.bc -o - | FileCheck %s
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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; CHECK: define void @f1()
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define void @f1() !type !0 {
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ret void
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}
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; CHECK: define internal void @f2()
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define void @f2() !type !1 {
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ret void
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}
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define i1 @_start(i8* %p) {
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%1 = call i1 @llvm.type.test(i8* %p, metadata !"typeid1")
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call void @f1()
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call void @f2()
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ret i1 %1
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}
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declare i1 @llvm.type.test(i8*, metadata)
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!0 = !{i64 0, !"typeid1"}
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!1 = !{i64 0, !"typeid2"}
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