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llvm-mirror/test/Transforms/GlobalOpt/2010-10-19-WeakOdr.ll
Fangrui Song 7cb7bfede4 [IR] Disallow llvm.global_ctors and llvm.global_dtors of the 2-field form in textual format
The 3-field form was introduced by D3499 in 2014 and the legacy 2-field
form was planned to be removed in LLVM 4.0

For the textual format, this patch migrates the existing 2-field form to
use the 3-field form and deletes the compatibility code.
test/Verifier/global-ctors-2.ll checks we have a friendly error message.

For bitcode, lib/IR/AutoUpgrade UpgradeGlobalVariables will upgrade the
2-field form (add i8* null as the third field).

Reviewed By: rnk, dexonsmith

Differential Revision: https://reviews.llvm.org/D61547

llvm-svn: 360742
2019-05-15 02:35:32 +00:00

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409 B
LLVM

; RUN: opt < %s -globalopt -S | FileCheck %s
; PR8389: Globals with weak_odr linkage type must not be modified
; CHECK: weak_odr local_unnamed_addr global i32 0
@SomeVar = weak_odr global i32 0
@llvm.global_ctors = appending global [1 x { i32, void ()*, i8* }] [ { i32, void ()*, i8* } { i32 65535, void ()* @CTOR, i8* null } ]
define internal void @CTOR() {
store i32 23, i32* @SomeVar
ret void
}