[PATCH] D72225: Align branches within 32-Byte boundary(Prefix padding)

LuoYuanke via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Mon Jan 13 01:02:20 PST 2020


LuoYuanke added inline comments.


================
Comment at: llvm/lib/MC/MCAssembler.cpp:616
+      for (uint64_t i = 0; i != FragmentSize; ++i)
+        OS << char(BF.getValue());
+    }
----------------
Why we declare Value as int64_t in MCAlignFragment? It seems only 1 byte is needed. Or we add assert(BF.getValueSize() == 1)?


================
Comment at: llvm/lib/Target/X86/MCTargetDesc/X86AsmBackend.cpp:532
+      PF->setAlignment(AlignBoundary);
+      PF->setEmitNops(true);
+      return;
----------------
Just to confirm that there is no MCBoundaryAlignFragment between the 2 macro fusion instructions. Right?


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D72225/new/

https://reviews.llvm.org/D72225





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