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llvm-mirror/test/CodeGen/AArch64/stack-protector-target.ll
Evgeniy Stepanov c80f414fe8 Faster stack-protector for Android/AArch64.
Bionic has a defined thread-local location for the stack protector
cookie. Emit a direct load instead of going through __stack_chk_guard.

llvm-svn: 265481
2016-04-05 22:41:50 +00:00

20 lines
584 B
LLVM

; Test target-specific stack cookie location.
; RUN: llc -mtriple=aarch64-linux-android < %s -o - | FileCheck --check-prefix=ANDROID-AARCH64 %s
define void @_Z1fv() sspreq {
entry:
%x = alloca i32, align 4
%0 = bitcast i32* %x to i8*
call void @_Z7CapturePi(i32* nonnull %x)
ret void
}
declare void @_Z7CapturePi(i32*)
; ANDROID-AARCH64: mrs [[A:.*]], TPIDR_EL0
; ANDROID-AARCH64: ldr [[B:.*]], {{\[}}[[A]], #40]
; ANDROID-AARCH64: str [[B]], [sp,
; ANDROID-AARCH64: ldr [[C:.*]], {{\[}}[[A]], #40]
; ANDROID-AARCH64: ldr [[D:.*]], [sp,
; ANDROID-AARCH64: cmp [[C]], [[D]]