1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py 2; RUN: llc < %s -mtriple=arm64-apple-ios -relocation-model=pic -frame-pointer=all | FileCheck %s 3 4@__stack_chk_guard = external global ptr 5 6; PR20558 7 8; Load the stack guard for the second time, just in case the previous value gets spilled. 9define i32 @test_stack_guard_remat2() ssp { 10; CHECK-LABEL: test_stack_guard_remat2: 11; CHECK: ; %bb.0: ; %entry 12; CHECK-NEXT: sub sp, sp, #64 13; CHECK-NEXT: stp x29, x30, [sp, #48] ; 16-byte Folded Spill 14; CHECK-NEXT: add x29, sp, #48 15; CHECK-NEXT: .cfi_def_cfa w29, 16 16; CHECK-NEXT: .cfi_offset w30, -8 17; CHECK-NEXT: .cfi_offset w29, -16 18; CHECK-NEXT: Lloh0: 19; CHECK-NEXT: adrp x8, ___stack_chk_guard@GOTPAGE 20; CHECK-NEXT: Lloh1: 21; CHECK-NEXT: adrp x9, ___stack_chk_guard@GOTPAGE 22; CHECK-NEXT: Lloh2: 23; CHECK-NEXT: ldr x8, [x8, ___stack_chk_guard@GOTPAGEOFF] 24; CHECK-NEXT: Lloh3: 25; CHECK-NEXT: ldr x9, [x9, ___stack_chk_guard@GOTPAGEOFF] 26; CHECK-NEXT: Lloh4: 27; CHECK-NEXT: ldr x8, [x8] 28; CHECK-NEXT: Lloh5: 29; CHECK-NEXT: ldr x9, [x9] 30; CHECK-NEXT: str x8, [sp] 31; CHECK-NEXT: stur x9, [x29, #-8] 32; CHECK-NEXT: ldur x9, [x29, #-8] 33; CHECK-NEXT: cmp x8, x9 34; CHECK-NEXT: b.ne LBB0_2 35; CHECK-NEXT: ; %bb.1: ; %entry 36; CHECK-NEXT: ldp x29, x30, [sp, #48] ; 16-byte Folded Reload 37; CHECK-NEXT: mov w0, #-1 38; CHECK-NEXT: add sp, sp, #64 39; CHECK-NEXT: ret 40; CHECK-NEXT: LBB0_2: ; %entry 41; CHECK-NEXT: bl ___stack_chk_fail 42; CHECK-NEXT: .loh AdrpLdrGotLdr Lloh1, Lloh3, Lloh5 43; CHECK-NEXT: .loh AdrpLdrGotLdr Lloh0, Lloh2, Lloh4 44entry: 45 %StackGuardSlot = alloca ptr 46 %StackGuard = load ptr, ptr @__stack_chk_guard 47 call void @llvm.stackprotector(ptr %StackGuard, ptr %StackGuardSlot) 48 %container = alloca [32 x i8], align 1 49 call void @llvm.stackprotectorcheck(ptr @__stack_chk_guard) 50 ret i32 -1 51} 52 53declare void @llvm.stackprotector(ptr, ptr) ssp 54declare void @llvm.stackprotectorcheck(ptr) ssp 55