AsmPrinter: Do not use report_fatal_error for unknown appending linkage (#145269)

Author: arsenm

llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp

@@ -3207,7 +3207,10 @@ bool AsmPrinter::emitSpecialLLVMGlobal(const GlobalVariable *GV) {
     return true;
   }
 
-  report_fatal_error("unknown special variable with appending linkage");
+  GV->getContext().emitError(
+      "unknown special variable with appending linkage: " +
+      GV->getNameOrAsOperand());
+  return true;
 }
 
 /// EmitLLVMUsedList - For targets that define a MAI::UsedDirective, mark each

llvm/test/CodeGen/X86/AppendingLinkage.ll

@@ -1,4 +1,7 @@
-; RUN: not --crash llc < %s -mtriple=i686-- 2>&1 | FileCheck %s
+; RUN: not llc < %s -mtriple=i686-- 2>&1 | FileCheck %s
 
-; CHECK: unknown special variable with appending linkage
-@foo = appending constant [1 x i32 ]zeroinitializer
+; CHECK: error: unknown special variable with appending linkage: foo
+@foo = appending constant [1 x i32 ] zeroinitializer
+
+; CHECK: error: unknown special variable with appending linkage: @0
+@0 = appending constant [1 x i32 ] zeroinitializer