1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --no_x86_scrub_sp 2; RUN: llc < %s | FileCheck %s 3target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 4target triple = "x86_64-unknown-linux-gnu" 5 6define i32 @foo_noprotect() local_unnamed_addr { 7; CHECK-LABEL: foo_noprotect: 8; CHECK: # %bb.0: 9; CHECK-NEXT: pushq %rbp 10; CHECK-NEXT: .cfi_def_cfa_offset 16 11; CHECK-NEXT: .cfi_offset %rbp, -16 12; CHECK-NEXT: movq %rsp, %rbp 13; CHECK-NEXT: .cfi_def_cfa_register %rbp 14; CHECK-NEXT: andq $-65536, %rsp # imm = 0xFFFF0000 15; CHECK-NEXT: subq $65536, %rsp # imm = 0x10000 16; CHECK-NEXT: movl $1, 392(%rsp) 17; CHECK-NEXT: movl (%rsp), %eax 18; CHECK-NEXT: movq %rbp, %rsp 19; CHECK-NEXT: popq %rbp 20; CHECK-NEXT: .cfi_def_cfa %rsp, 8 21; CHECK-NEXT: retq 22 %a = alloca i32, i64 100, align 65536 23 %b = getelementptr inbounds i32, ptr %a, i64 98 24 store volatile i32 1, ptr %b 25 %c = load volatile i32, ptr %a 26 ret i32 %c 27} 28 29define i32 @foo_protect() local_unnamed_addr #0 { 30; CHECK-LABEL: foo_protect: 31; CHECK: # %bb.0: 32; CHECK-NEXT: pushq %rbp 33; CHECK-NEXT: .cfi_def_cfa_offset 16 34; CHECK-NEXT: .cfi_offset %rbp, -16 35; CHECK-NEXT: movq %rsp, %rbp 36; CHECK-NEXT: .cfi_def_cfa_register %rbp 37; CHECK-NEXT: movq %rsp, %r11 38; CHECK-NEXT: andq $-65536, %r11 # imm = 0xFFFF0000 39; CHECK-NEXT: cmpq %rsp, %r11 40; CHECK-NEXT: je .LBB1_4 41; CHECK-NEXT: # %bb.1: 42; CHECK-NEXT: subq $4096, %rsp # imm = 0x1000 43; CHECK-NEXT: cmpq %r11, %rsp 44; CHECK-NEXT: jb .LBB1_3 45; CHECK-NEXT: .LBB1_2: # =>This Inner Loop Header: Depth=1 46; CHECK-NEXT: movq $0, (%rsp) 47; CHECK-NEXT: subq $4096, %rsp # imm = 0x1000 48; CHECK-NEXT: cmpq %rsp, %r11 49; CHECK-NEXT: jb .LBB1_2 50; CHECK-NEXT: .LBB1_3: 51; CHECK-NEXT: movq %r11, %rsp 52; CHECK-NEXT: movq $0, (%rsp) 53; CHECK-NEXT: .LBB1_4: 54; CHECK-NEXT: movq %rsp, %r11 55; CHECK-NEXT: subq $65536, %r11 # imm = 0x10000 56; CHECK-NEXT: .LBB1_5: # =>This Inner Loop Header: Depth=1 57; CHECK-NEXT: subq $4096, %rsp # imm = 0x1000 58; CHECK-NEXT: movq $0, (%rsp) 59; CHECK-NEXT: cmpq %r11, %rsp 60; CHECK-NEXT: jne .LBB1_5 61; CHECK-NEXT: # %bb.6: 62; CHECK-NEXT: movl $1, 392(%rsp) 63; CHECK-NEXT: movl (%rsp), %eax 64; CHECK-NEXT: movq %rbp, %rsp 65; CHECK-NEXT: popq %rbp 66; CHECK-NEXT: .cfi_def_cfa %rsp, 8 67; CHECK-NEXT: retq 68 %a = alloca i32, i64 100, align 65536 69 %b = getelementptr inbounds i32, ptr %a, i64 98 70 store volatile i32 1, ptr %b 71 %c = load volatile i32, ptr %a 72 ret i32 %c 73} 74 75attributes #0 = {"probe-stack"="inline-asm"} 76