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llvm-mirror/test/DebugInfo/COFF/asan-module-without-functions.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
2.2 KiB
LLVM

; RUN: llc -mcpu=core2 -mtriple=i686-pc-win32 -O0 < %s | FileCheck --check-prefix=X86 %s
; This LL file was generated by running clang on the following code with
; -fsanitize=address
; D:\asan.c:
; 1 unsigned char c = 42;
;
; This file defines no functions, so just make sure we don't try to emit
; the line table for functions of zero size.
; X86-NOT: .section .debug$S,"rn"
; ModuleID = 'asan.c'
target datalayout = "e-m:w-p:32:32-i64:64-f80:32-n8:16:32-S32"
target triple = "i686-pc-win32"
@c = global { i8, [63 x i8] } { i8 42, [63 x i8] zeroinitializer }, align 32
@llvm.global_ctors = appending global [1 x { i32, void ()*, i8* }] [{ i32, void ()*, i8* } { i32 1, void ()* @asan.module_ctor, i8* null }]
@___asan_gen_ = private constant [7 x i8] c"asan.c\00", align 1
@___asan_gen_1 = private unnamed_addr constant [2 x i8] c"c\00", align 1
@0 = internal global [1 x { i32, i32, i32, i32, i32, i32 }] [{ i32, i32, i32, i32, i32, i32 } { i32 ptrtoint ({ i8, [63 x i8] }* @c to i32), i32 1, i32 64, i32 ptrtoint ([2 x i8]* @___asan_gen_1 to i32), i32 ptrtoint ([7 x i8]* @___asan_gen_ to i32), i32 0 }]
@llvm.global_dtors = appending global [1 x { i32, void ()*, i8* }] [{ i32, void ()*, i8* } { i32 1, void ()* @asan.module_dtor, i8* null }]
define internal void @asan.module_ctor() {
call void @__asan_init_v3()
call void @__asan_register_globals(i32 ptrtoint ([1 x { i32, i32, i32, i32, i32, i32 }]* @0 to i32), i32 1)
ret void
}
declare void @__asan_init_v3()
declare void @__asan_before_dynamic_init(i32)
declare void @__asan_after_dynamic_init()
declare void @__asan_register_globals(i32, i32)
declare void @__asan_unregister_globals(i32, i32)
define internal void @asan.module_dtor() {
call void @__asan_unregister_globals(i32 ptrtoint ([1 x { i32, i32, i32, i32, i32, i32 }]* @0 to i32), i32 1)
ret void
}
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!3, !4}
!llvm.ident = !{!5}
!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: LineTablesOnly, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2)
!1 = !DIFile(filename: "asan.c", directory: "D:\5C")
!2 = !{}
!3 = !{i32 2, !"CodeView", i32 1}
!4 = !{i32 1, !"Debug Info Version", i32 3}
!5 = !{!"clang version 3.5.0 "}