[PATCH] D150633: [X86]check that Uses, Defs are same for entries in memory folding table

Kan Shengchen via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Tue May 16 01:06:13 PDT 2023


skan added inline comments.


================
Comment at: llvm/utils/TableGen/X86FoldTablesEmitter.cpp:112
+    void checkCorrectness() const {
+      // Check that Uses, Defs are same for entries in memory folding table
+      auto &RegInstRec = *RegInst->TheDef;
----------------
`,` -> `and`

This function is about entry only, not about  the table. So I suggest
`Check that Uses and Defs are same after memory fold`


================
Comment at: llvm/utils/TableGen/X86FoldTablesEmitter.cpp:120
+      if (ListOfUsesReg != ListOfUsesMem || ListOfDefsReg != ListOfDefsMem)
+        llvm::report_fatal_error(
+            "Uses/Defs couldn't be changed after folding " +
----------------
Drop `llvm::`?


================
Comment at: llvm/utils/TableGen/X86FoldTablesEmitter.cpp:619-620
+#ifndef NDEBUG
+  // To Check if the instructions convertion in MemFoldTable change the Uses
+  // and Defs, it's wrong when we convert it and changed its Defs/Uses.
+  auto CheckMemFoldTable = [](const FoldTable &Table) -> void {
----------------
The logic here does not show anything about `Uses` or `Defs`. And it's self-explained, we can remove the comments.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D150633/new/

https://reviews.llvm.org/D150633



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