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llvm-mirror/test/Transforms/ThinLTOBitcodeWriter/unsplittable.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

36 lines
1.1 KiB
LLVM

; RUN: opt -thinlto-bc -thin-link-bitcode-file=%t2 -thinlto-split-lto-unit -o %t %s
; RUN: llvm-dis -o - %t | FileCheck %s
; RUN: llvm-bcanalyzer -dump %t | FileCheck --check-prefix=BCA %s
; When not splitting the module, the thin link bitcode file should simply be a
; copy of the regular module.
; RUN: diff %t %t2
; BCA: <FULL_LTO_GLOBALVAL_SUMMARY_BLOCK
; BCA-NOT: <GLOBALVAL_SUMMARY_BLOCK
; CHECK: @llvm.global_ctors = appending global
@llvm.global_ctors = appending global [1 x { i32, void ()*, i8* }] [{ i32, void ()*, i8* } { i32 65535, void ()* @f, i8* null }]
; CHECK: @g = internal global i8 42, !type !0
@g = internal global i8 42, !type !0
declare void @sink(i8*)
; CHECK: define internal void @f()
define internal void @f() {
call void @sink(i8* @g)
ret void
}
$h = comdat any
; CHECK: define void @h() comdat
define void @h() comdat {
ret void
}
; CHECK: !llvm.module.flags = !{![[FLAG1:[0-9]+]], ![[FLAG2:[0-9]+]]}
; CHECK: ![[FLAG1]] = !{i32 1, !"EnableSplitLTOUnit", i32 1}
; CHECK: ![[FLAG2]] = !{i32 1, !"ThinLTO", i32 0}
!0 = !{i32 0, !"typeid"}