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Imported Upstream version 5.18.0.246

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Former-commit-id: 0c7ce5b1a7851e13f22acfd379b7f9fb304e4833
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Xamarin Public Jenkins (auto-signing)
2019-01-23 08:21:40 +00:00
parent a7724cd563
commit 279aa8f685
28482 changed files with 3866972 additions and 44 deletions
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30
external/llvm/test/CodeGen/AArch64/stack-guard-remat-bitcast.ll vendored Normal file
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; RUN: llc < %s -mtriple=arm64-apple-ios -relocation-model=pic -disable-fp-elim | FileCheck %s
@__stack_chk_guard = external global i64*
; PR20558
; CHECK: adrp [[R0:x[0-9]+]], ___stack_chk_guard@GOTPAGE
; CHECK: ldr [[R1:x[0-9]+]], {{\[}}[[R0]], ___stack_chk_guard@GOTPAGEOFF{{\]}}
; Load the stack guard for the second time, just in case the previous value gets spilled.
; CHECK: adrp [[GUARD_PAGE:x[0-9]+]], ___stack_chk_guard@GOTPAGE
; CHECK: ldr [[R2:x[0-9]+]], {{\[}}[[R1]]{{\]}}
; CHECK: stur [[R2]], {{\[}}x29, [[SLOT0:[0-9#\-]+]]{{\]}}
; CHECK: ldur [[R3:x[0-9]+]], {{\[}}x29, [[SLOT0]]{{\]}}
; CHECK: ldr [[GUARD_ADDR:x[0-9]+]], {{\[}}[[GUARD_PAGE]], ___stack_chk_guard@GOTPAGEOFF{{\]}}
; CHECK: ldr [[GUARD:x[0-9]+]], {{\[}}[[GUARD_ADDR]]{{\]}}
; CHECK: cmp [[GUARD]], [[R3]]
; CHECK: b.ne LBB
define i32 @test_stack_guard_remat2() {
entry:
%StackGuardSlot = alloca i8*
%StackGuard = load i8*, i8** bitcast (i64** @__stack_chk_guard to i8**)
call void @llvm.stackprotector(i8* %StackGuard, i8** %StackGuardSlot)
%container = alloca [32 x i8], align 1
call void @llvm.stackprotectorcheck(i8** bitcast (i64** @__stack_chk_guard to i8**))
ret i32 -1
}
declare void @llvm.stackprotector(i8*, i8**)
declare void @llvm.stackprotectorcheck(i8**)