mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-23 04:52:54 +02:00
6c495ec529
In certain cases, the compiler might try to merge __stack_chk_guard with another global variable. (Or someone could theoretically define __stack_chk_guard as an alias.) In that case, make sure we don't crash. Differential Revision: https://reviews.llvm.org/D45746 llvm-svn: 330495
22 lines
894 B
LLVM
22 lines
894 B
LLVM
; RUN: llc -O3 %s -o - | FileCheck %s
|
|
target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
|
|
target triple = "aarch64-linux-gnu"
|
|
|
|
; Make sure we correctly lower stack guards even if __stack_chk_guard
|
|
; is an alias. (The alias is created by GlobalMerge.)
|
|
; CHECK: adrp {{.*}}, __stack_chk_guard
|
|
; CHECK: ldr {{.*}}, [{{.*}}, :lo12:__stack_chk_guard]
|
|
; CHECK: .set __stack_chk_guard, .L_MergedGlobals+4
|
|
|
|
@__stack_chk_guard = internal global [8 x i32] zeroinitializer, align 4
|
|
@x = internal global i32 0, align 4
|
|
|
|
define i32 @b() nounwind sspstrong {
|
|
entry:
|
|
%z = alloca [10 x i32], align 4
|
|
%arraydecay = getelementptr inbounds [10 x i32], [10 x i32]* %z, i64 0, i64 0
|
|
%call = call i32 @a(i32* getelementptr inbounds ([8 x i32], [8 x i32]* @__stack_chk_guard, i64 0, i64 0), i32* nonnull @x, i32* nonnull %arraydecay) #3
|
|
ret i32 %call
|
|
}
|
|
declare i32 @a(i32*, i32*, i32*)
|