[PATCH] D112073: [PowerPC] Emit warning when SP is clobbered by asm

[ChenZheng via Phabricator via llvm-commits]

shchenz added inline comments.


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Comment at: llvm/lib/Target/PowerPC/PPCRegisterInfo.cpp:396
+  // The stack pointer (R1) is not clobberable by inline asm
+  return PhysReg != PPC::R1;
+}
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PowerPC overrides `getReservedRegs()`, why don't we use this function and only warn for `R1` even no `X1`?


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D112073/new/

https://reviews.llvm.org/D112073