llvm-mirror/test/CodeGen/AArch64/stack-guard-reassign.ll

; RUN: llc -O0 --frame-pointer=all -mtriple=aarch64-- -o - %S/../Inputs/stack-guard-reassign.ll | FileCheck %s

; Verify that the offset assigned to the stack protector is at the top of the
; frame, covering the locals.
; CHECK-LABEL: fn:
; CHECK:      adrp x8, __stack_chk_guard
; CHECK-NEXT: ldr x8, [x8, :lo12:__stack_chk_guard]
; CHECK-NEXT: stur x8, [x29, #-8]
[CodeGen] Add stack protector tests where the guard gets re-assigned In preparation of a fix, add tests for multiple backends. llvm-svn: 366370 2019-07-17 22:46:16 +02:00			`; RUN: llc -O0 --frame-pointer=all -mtriple=aarch64-- -o - %S/../Inputs/stack-guard-reassign.ll \| FileCheck %s`

			`; Verify that the offset assigned to the stack protector is at the top of the`
			`; frame, covering the locals.`
			`; CHECK-LABEL: fn:`
[CodeGen] Don't resolve the stack protector frame accesses until PEI Currently, stack protector loads and stores are resolved during LocalStackSlotAllocation (if the pass needs to run). When this is the case, the base register assigned to the frame access is going to be one of the vregs created during LocalStackSlotAllocation. This means that we are keeping a pointer to the stack protector slot, and we're using this pointer to load and store to it. In case register pressure goes up, we may end up spilling this pointer to the stack, which can be a security concern. Instead, leave it to PEI to resolve the frame accesses. In order to do that, we make all stack protector accesses go through frame index operands, then PEI will resolve this using an offset from sp/fp/bp. Differential Revision: https://reviews.llvm.org/D64759 llvm-svn: 367068 2019-07-26 00:23:48 +02:00			`; CHECK: adrp x8, __stack_chk_guard`
			`; CHECK-NEXT: ldr x8, [x8, :lo12:__stack_chk_guard]`
Relanding r368987 [AArch64] Change location of frame-record within callee-save area. Changes: There was a condition for `!NeedsFrameRecord` missing in the assert. The assert in question has changed to: + assert((!RPI.isPaired() \|\| !NeedsFrameRecord \|\| RPI.Reg2 != AArch64::FP \|\| + RPI.Reg1 == AArch64::LR) && + "FrameRecord must be allocated together with LR"); This addresses PR43016. llvm-svn: 369122 2019-08-16 17:42:28 +02:00			`; CHECK-NEXT: stur x8, [x29, #-8]`