[clang] [clang] Do not emit template parameter objects as COMDATs when they have internal linkage. (PR #125448)

[Owen Anderson via cfe-commits]

================
@@ -3765,7 +3765,7 @@ ConstantAddress 
CodeGenModule::GetAddrOfTemplateParamObject(
   auto *GV = new llvm::GlobalVariable(getModule(), Init->getType(),
                                       /*isConstant=*/true, Linkage, Init, 
Name);
   setGVProperties(GV, TPO);
-  if (supportsCOMDAT())
+  if (supportsCOMDAT() && Linkage == llvm::GlobalValue::LinkOnceODRLinkage)
----------------
resistor wrote:

Linkage is set to either LinkOnceODRLinkage or InternalLinkage a few lines 
above this.

https://github.com/llvm/llvm-project/pull/125448
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