[llvm] 413c080 - [TableGen] Add const and avoid a copy in CompressInstEmitter::emitCompressInstEmitter. NFC

[Craig Topper via llvm-commits]

Author: Craig Topper
Date: 2025-07-25T09:16:42-07:00
New Revision: 413c0800ce4c3a9d3eb8dc6ef83465e9c91338b2

URL: https://github.com/llvm/llvm-project/commit/413c0800ce4c3a9d3eb8dc6ef83465e9c91338b2
DIFF: https://github.com/llvm/llvm-project/commit/413c0800ce4c3a9d3eb8dc6ef83465e9c91338b2.diff

LOG: [TableGen] Add const and avoid a copy in CompressInstEmitter::emitCompressInstEmitter. NFC

Added: 
    

Modified: 
    llvm/utils/TableGen/CompressInstEmitter.cpp

Removed: 
    


################################################################################
diff  --git a/llvm/utils/TableGen/CompressInstEmitter.cpp b/llvm/utils/TableGen/CompressInstEmitter.cpp
index 331cea1e6230e..755233d778912 100644
--- a/llvm/utils/TableGen/CompressInstEmitter.cpp
+++ b/llvm/utils/TableGen/CompressInstEmitter.cpp
@@ -653,7 +653,7 @@ void CompressInstEmitter::emitCompressInstEmitter(raw_ostream &OS,
                 .str()
           : "";
 
-  for (auto &CompressPat : CompressPatterns) {
+  for (const auto &CompressPat : CompressPatterns) {
     if (EType == EmitterType::Uncompress && CompressPat.IsCompressOnly)
       continue;
 
@@ -661,16 +661,16 @@ void CompressInstEmitter::emitCompressInstEmitter(raw_ostream &OS,
     std::string CodeString;
     raw_string_ostream CondStream(CondString);
     raw_string_ostream CodeStream(CodeString);
-    CodeGenInstruction &Source =
+    const CodeGenInstruction &Source =
         CompressOrCheck ? CompressPat.Source : CompressPat.Dest;
-    CodeGenInstruction &Dest =
+    const CodeGenInstruction &Dest =
         CompressOrCheck ? CompressPat.Dest : CompressPat.Source;
-    IndexedMap<OpData> SourceOperandMap = CompressOrCheck
-                                              ? CompressPat.SourceOperandMap
-                                              : CompressPat.DestOperandMap;
-    IndexedMap<OpData> &DestOperandMap = CompressOrCheck
-                                             ? CompressPat.DestOperandMap
-                                             : CompressPat.SourceOperandMap;
+    const IndexedMap<OpData> &SourceOperandMap =
+        CompressOrCheck ? CompressPat.SourceOperandMap
+                        : CompressPat.DestOperandMap;
+    const IndexedMap<OpData> &DestOperandMap =
+        CompressOrCheck ? CompressPat.DestOperandMap
+                        : CompressPat.SourceOperandMap;
 
     CurOp = Source.TheDef->getName();
     // Check current and previous opcode to decide to continue or end a case.