1c268a8ff4
While probing stack, the stack register is moved without dwarf information, which could cause panic if unwind the backtrace. This commit only add annotation for the inline stack probe case. Dwarf information for the loop case should be done in another patch and need further discussion. Reviewed By: nagisa Differential Revision: https://reviews.llvm.org/D99579
31 lines
1.0 KiB
LLVM
31 lines
1.0 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --no_x86_scrub_sp
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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() local_unnamed_addr #0 {
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; CHECK-LABEL: foo:
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; CHECK: # %bb.0:
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; CHECK-NEXT: subq $4096, %rsp # imm = 0x1000
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; CHECK-NEXT: .cfi_adjust_cfa_offset 4096
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; CHECK-NEXT: movq $0, (%rsp)
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; CHECK-NEXT: subq $3784, %rsp # imm = 0xEC8
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; CHECK-NEXT: .cfi_def_cfa_offset 7888
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; CHECK-NEXT: movl $1, 264(%rsp)
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; CHECK-NEXT: movl $1, 4664(%rsp)
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; CHECK-NEXT: movl -128(%rsp), %eax
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; CHECK-NEXT: addq $7880, %rsp # imm = 0x1EC8
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; CHECK-NEXT: .cfi_def_cfa_offset 8
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; CHECK-NEXT: retq
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%a = alloca i32, i64 2000, align 16
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%b0 = getelementptr inbounds i32, i32* %a, i64 98
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%b1 = getelementptr inbounds i32, i32* %a, i64 1198
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store i32 1, i32* %b0
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store 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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