89 lines
2.8 KiB
LLVM
89 lines
2.8 KiB
LLVM
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; RUN: llc < %s | FileCheck %s
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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define i32 @foo_noprotect() local_unnamed_addr {
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; CHECK-LABEL: foo_noprotect:
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; CHECK: # %bb.0:
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; CHECK-NEXT: pushq %rbp
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; CHECK-NEXT: .cfi_def_cfa_offset 16
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; CHECK-NEXT: .cfi_offset %rbp, -16
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; CHECK-NEXT: movq %rsp, %rbp
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; CHECK-NEXT: .cfi_def_cfa_register %rbp
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; CHECK-NEXT: andq $-4096, %rsp # imm = 0xF000
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; CHECK-NEXT: subq $73728, %rsp # imm = 0x12000
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; CHECK-NEXT: movl $1, 392(%rsp)
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; CHECK-NEXT: movl $1, 28792(%rsp)
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; CHECK-NEXT: movl (%rsp), %eax
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; CHECK-NEXT: movq %rbp, %rsp
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; CHECK-NEXT: popq %rbp
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; CHECK-NEXT: .cfi_def_cfa %rsp, 8
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; CHECK-NEXT: retq
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%a = alloca i32, i64 18000, align 4096
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%b0 = getelementptr inbounds i32, i32* %a, i64 98
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%b1 = getelementptr inbounds i32, i32* %a, i64 7198
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store volatile i32 1, i32* %b0
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store volatile i32 1, i32* %b1
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%c = load volatile i32, i32* %a
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ret i32 %c
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}
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define i32 @foo_protect() local_unnamed_addr #0 {
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; CHECK-LABEL: foo_protect:
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; CHECK: # %bb.0:
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; CHECK-NEXT: pushq %rbp
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; CHECK-NEXT: .cfi_def_cfa_offset 16
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; CHECK-NEXT: .cfi_offset %rbp, -16
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; CHECK-NEXT: movq %rsp, %rbp
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; CHECK-NEXT: .cfi_def_cfa_register %rbp
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; CHECK-NEXT: movq %rsp, %r11
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; CHECK-NEXT: andq $-4096, %r11 # imm = 0xF000
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; CHECK-NEXT: cmpq %rsp, %r11
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; CHECK-NEXT: je .LBB1_4
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; CHECK-NEXT:# %bb.1:
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; CHECK-NEXT: subq $4096, %rsp # imm = 0x1000
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; CHECK-NEXT: cmpq %rsp, %r11
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; CHECK-NEXT: jb .LBB1_3
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; CHECK-NEXT:.LBB1_2: # =>This Inner Loop Header: Depth=1
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; CHECK-NEXT: movq $0, (%rsp)
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; CHECK-NEXT: subq $4096, %rsp # imm = 0x1000
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; CHECK-NEXT: cmpq %rsp, %r11
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; CHECK-NEXT: jb .LBB1_2
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; CHECK-NEXT:.LBB1_3:
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; CHECK-NEXT: movq %r11, %rsp
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; CHECK-NEXT: movq $0, (%rsp)
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; CHECK-NEXT:.LBB1_4:
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; CHECK-NEXT: movq %rsp, %r11
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; CHECK-NEXT: subq $73728, %r11 # imm = 0x12000
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; CHECK-NEXT:.LBB1_5: # =>This Inner Loop Header: Depth=1
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; CHECK-NEXT: subq $4096, %rsp # imm = 0x1000
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; CHECK-NEXT: movq $0, (%rsp)
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; CHECK-NEXT: cmpq %r11, %rsp
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; CHECK-NEXT: jne .LBB1_5
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; CHECK-NEXT:# %bb.6:
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; CHECK-NEXT: movl $1, 392(%rsp)
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; CHECK-NEXT: movl $1, 28792(%rsp)
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; CHECK-NEXT: movl (%rsp), %eax
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; CHECK-NEXT: movq %rbp, %rsp
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; CHECK-NEXT: popq %rbp
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; CHECK-NEXT: .cfi_def_cfa %rsp, 8
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; CHECK-NEXT: retq
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%a = alloca i32, i64 18000, align 4096
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%b0 = getelementptr inbounds i32, i32* %a, i64 98
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%b1 = getelementptr inbounds i32, i32* %a, i64 7198
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store volatile i32 1, i32* %b0
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store volatile i32 1, i32* %b1
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%c = load volatile i32, i32* %a
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ret i32 %c
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}
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attributes #0 = {"probe-stack"="inline-asm"}
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