File: stackguard-internal.ll

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llvm-toolchain-15 1%3A15.0.6-4
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; 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*)