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llvm-mirror/test/Transforms/GlobalOpt/assume.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

22 lines
566 B
LLVM

; RUN: opt -S -globalopt < %s | FileCheck %s
; CHECK: @tmp = local_unnamed_addr global i32 42
@llvm.global_ctors = appending global [1 x { i32, void ()*, i8* }] [{ i32, void ()*, i8* } { i32 65535, void ()* @_GLOBAL__I_a, i8* null }]
@tmp = global i32 0
define i32 @TheAnswerToLifeTheUniverseAndEverything() {
ret i32 42
}
define void @_GLOBAL__I_a() {
enter:
%tmp1 = call i32 @TheAnswerToLifeTheUniverseAndEverything()
store i32 %tmp1, i32* @tmp
%cmp = icmp eq i32 %tmp1, 42
call void @llvm.assume(i1 %cmp)
ret void
}
declare void @llvm.assume(i1)