2e37557fde
The IR stack protector pass should insert stack checks before the tail calls not only the musttail calls. So that the attributes `ssqreq` and `tail call`, which are emited by llvm-opt, could be both enabled by llvm-llc. Reviewed By: compnerd Differential Revision: https://reviews.llvm.org/D133860
40 lines
1.0 KiB
LLVM
40 lines
1.0 KiB
LLVM
; RUN: llc -mtriple=x86_64-windows-msvc %s -o - -verify-machineinstrs | FileCheck %s -check-prefix=WINDOWS
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; RUN: llc -mtriple=x86_64-linux-gnu %s -o - -verify-machineinstrs | FileCheck %s -check-prefix=LINUX
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declare void @h(ptr, i64, ptr)
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define tailcc void @tailcall_frame(ptr %0, i64 %1) sspreq {
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; WINDOWS-LABEL: tailcall_frame:
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; WINDOWS: callq __security_check_cookie
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; WINDOWS: xorl %ecx, %ecx
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; WINDOWS: jmp h
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; LINUX-LABEL: tailcall_frame:
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; LINUX: jne
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; LINUX: jmp h
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; LINUX: callq __stack_chk_fail
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tail call tailcc void @h(ptr null, i64 0, ptr null)
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ret void
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}
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declare void @bar()
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define void @tailcall_unrelated_frame() sspreq {
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; WINDOWS-LABEL: tailcall_unrelated_frame:
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; WINDOWS: subq [[STACK:\$.*]], %rsp
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; WINDOWS: callq bar
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; WINDOWS: callq __security_check_cookie
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; WINDOWS: addq [[STACK]], %rsp
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; WINDOWS: jmp bar
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; LINUX-LABEL: tailcall_unrelated_frame:
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; LINUX: callq bar
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; LINUX: jne
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; LINUX: jmp bar
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; LINUX: callq __stack_chk_fail
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call void @bar()
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tail call void @bar()
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ret void
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}
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