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llvm-mirror/test/Transforms/ObjCARC/comdat-ipo.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

54 lines
1.4 KiB
LLVM

; RUN: opt -S -objc-arc-apelim < %s | FileCheck %s
; See PR26774
@llvm.global_ctors = appending global [2 x { i32, void ()*, i8* }] [{ i32, void ()*, i8* } { i32 65535, void ()* @_GLOBAL__I_x, i8* null }, { i32, void ()*, i8* } { i32 65535, void ()* @_GLOBAL__I_y, i8* null }]
@x = global i32 0
declare i32 @bar() nounwind
define linkonce_odr i32 @foo() nounwind {
entry:
ret i32 5
}
define internal void @__cxx_global_var_init() {
entry:
%call = call i32 @foo()
store i32 %call, i32* @x, align 4
ret void
}
define internal void @__dxx_global_var_init() {
entry:
%call = call i32 @bar()
store i32 %call, i32* @x, align 4
ret void
}
; CHECK-LABEL: define internal void @_GLOBAL__I_x() {
define internal void @_GLOBAL__I_x() {
entry:
; CHECK: call i8* @llvm.objc.autoreleasePoolPush()
; CHECK-NEXT: call void @__cxx_global_var_init()
; CHECK-NEXT: call void @llvm.objc.autoreleasePoolPop(i8* %0)
; CHECK-NEXT: ret void
%0 = call i8* @llvm.objc.autoreleasePoolPush() nounwind
call void @__cxx_global_var_init()
call void @llvm.objc.autoreleasePoolPop(i8* %0) nounwind
ret void
}
define internal void @_GLOBAL__I_y() {
entry:
%0 = call i8* @llvm.objc.autoreleasePoolPush() nounwind
call void @__dxx_global_var_init()
call void @llvm.objc.autoreleasePoolPop(i8* %0) nounwind
ret void
}
declare i8* @llvm.objc.autoreleasePoolPush()
declare void @llvm.objc.autoreleasePoolPop(i8*)