[PATCH] D157373: [RISCV] add a compress optimization for stack inst.

[Wang Pengcheng via Phabricator via llvm-commits]

wangpc added inline comments.


================
Comment at: llvm/lib/Target/RISCV/RISCVFrameLowering.cpp:1324
+      // Avoid increasing extra instructions when ld/st can be compressed.
+      if ((CSI.size() <= RVCompressLen) && (StackSize <= RVCompressLen + 2048 ||
+                                            StackSize > 2048 * 3 - StackAlign))
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Do we really need this condition `(StackSize <= RVCompressLen + 2048 || StackSize > 2048 * 3 - StackAlign)`?


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D157373/new/

https://reviews.llvm.org/D157373