Some optimizations done by globalopt are safe only for internal linkage, not
linkonce linkage. For example, it is not valid to add unnamed_addr. This also fixes a crash in g++.dg/opt/static5.C. llvm-svn: 158528
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@ -1729,6 +1729,9 @@ bool GlobalOpt::ProcessGlobal(GlobalVariable *GV,
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return true;
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}
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if (!GV->hasLocalLinkage())
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return false;
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SmallPtrSet<const PHINode*, 16> PHIUsers;
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GlobalStatus GS;
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@ -4,11 +4,23 @@
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@b = internal global i32 0, align 4
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@c = internal global i32 0, align 4
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@d = internal constant [4 x i8] c"foo\00", align 1
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@e = linkonce_odr global i32 0
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; CHECK: @a = internal global i32 0, align 4
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; CHECK: @b = internal global i32 0, align 4
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; CHECK: @c = internal unnamed_addr global i32 0, align 4
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; CHECK: @d = internal unnamed_addr constant [4 x i8] c"foo\00", align 1
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; CHECK: @e = linkonce_odr global i32 0
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define i32 @get_e() {
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%t = load i32* @e
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ret i32 %t
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}
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define void @set_e(i32 %x) {
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store i32 %x, i32* @e
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ret void
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}
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define i1 @bah(i64 %i) nounwind readonly optsize ssp {
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entry:
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