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
32 lines
1.1 KiB
LLVM
32 lines
1.1 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 $1784, %rsp # imm = 0x6F8
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; CHECK-NEXT: .cfi_def_cfa_offset 5888
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; CHECK-NEXT: movl $1, 3872(%rsp)
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; CHECK-NEXT: movl $2, 672(%rsp)
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; CHECK-NEXT: movl 1872(%rsp), %eax
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; CHECK-NEXT: addq $5880, %rsp # imm = 0x16F8
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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 1000, align 16
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%b = alloca i32, i64 500, align 16
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%a0 = getelementptr inbounds i32, i32* %a, i64 500
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%b0 = getelementptr inbounds i32, i32* %b, i64 200
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store volatile i32 1, i32* %a0
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store volatile i32 2, i32* %b0
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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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