[llvm] 146abed - [AArch64][NFC] Avoid relocations in LdStNInstrDesc (#202025)

[via llvm-commits]

Author: Alexis Engelke
Date: 2026-06-09T19:46:21+02:00
New Revision: 146abed5cd072a27c4240c7cf53b764571e62462

URL: https://github.com/llvm/llvm-project/commit/146abed5cd072a27c4240c7cf53b764571e62462
DIFF: https://github.com/llvm/llvm-project/commit/146abed5cd072a27c4240c7cf53b764571e62462.diff

LOG: [AArch64][NFC] Avoid relocations in LdStNInstrDesc (#202025)

These are small strings, so instead of an 8 byte string pointer that
needs a relocation store the strings directly inline. This avoids 320
relocations in libLLVM.so.

Added: 
    

Modified: 
    llvm/lib/Target/AArch64/MCTargetDesc/AArch64InstPrinter.cpp

Removed: 
    


################################################################################
diff  --git a/llvm/lib/Target/AArch64/MCTargetDesc/AArch64InstPrinter.cpp b/llvm/lib/Target/AArch64/MCTargetDesc/AArch64InstPrinter.cpp
index 2df769539960d..9134203a2da2a 100644
--- a/llvm/lib/Target/AArch64/MCTargetDesc/AArch64InstPrinter.cpp
+++ b/llvm/lib/Target/AArch64/MCTargetDesc/AArch64InstPrinter.cpp
@@ -421,11 +421,11 @@ static bool isTblTbxInstruction(unsigned Opcode, StringRef &Layout,
 
 struct LdStNInstrDesc {
   unsigned Opcode;
-  const char *Mnemonic;
-  const char *Layout;
-  int ListOperand;
-  bool HasLane;
-  int NaturalOffset;
+  char Mnemonic[5];
+  char Layout[5];
+  uint8_t ListOperand : 2;
+  uint8_t HasLane : 1;
+  uint8_t NaturalOffset;
 };
 
 static const LdStNInstrDesc LdStNInstInfo[] = {
@@ -827,7 +827,7 @@ void AArch64AppleInstPrinter::printInst(const MCInst *MI, uint64_t Address,
       } else {
         assert(LdStDesc->NaturalOffset && "no offset on post-inc instruction?");
         O << ", ";
-        markup(O, Markup::Immediate) << "#" << LdStDesc->NaturalOffset;
+        markup(O, Markup::Immediate) << "#" << int(LdStDesc->NaturalOffset);
       }
     }