[PATCH] D84414: [RISCV] Support Shadow Call Stack

[Jessica Clarke via Phabricator via cfe-commits]

jrtc27 added inline comments.


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Comment at: llvm/test/CodeGen/RISCV/shadowcallstack.ll:2
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -mtriple=riscv32-unknown-elf -mattr=+reserve-x18 -verify-machineinstrs < %s \
+; RUN: | FileCheck %s --check-prefix=RV32
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As I said before, please just use `-mtriple=riscv32`. The `-unknown-elf` is implied, irrelevant and wastes space, so all the OS-independent CodeGen tests just specify the CPU.


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Comment at: llvm/test/CodeGen/RISCV/shadowcallstack.ll:3
+; RUN: llc -mtriple=riscv32-unknown-elf -mattr=+reserve-x18 -verify-machineinstrs < %s \
+; RUN: | FileCheck %s --check-prefix=RV32
+
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Two extra spaces to indent the | is the predominant style.


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Comment at: llvm/test/CodeGen/RISCV/shadowcallstack.ll:4
+; RUN: | FileCheck %s --check-prefix=RV32
+
+; RUN: llc -mtriple=riscv64-unknown-elf -mattr=+reserve-x18 -verify-machineinstrs < %s \
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Delete this blank line.


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Comment at: llvm/test/CodeGen/RISCV/shadowcallstack.ll:12
+; RV32-NEXT:    ret
+; RV32-NOT:     x18
+;
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pcc wrote:
> Shouldn't it be looking for `s2` since that's how `x18` is spelled in assembly?
The -NOTs shouldn't even exist, this isn't how you use `update_llc_test_checks.py`. But yes, by default that's how it'll be printed unless you disable printing aliases.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D84414/new/

https://reviews.llvm.org/D84414