[PATCH] D56245: Use llvm_unreachable instead of errs+abort in MCStreamer.cpp (in EmitRawTextImpl). NFC.

Kristina Brooks via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Thu Jan 3 10:40:09 PST 2019


kristina updated this revision to Diff 180101.
kristina added a comment.

Revised to be a fatal error after discussion and added comment for any future maintainers. Also made empty braced blocks consistent.


Repository:
  rL LLVM

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D56245/new/

https://reviews.llvm.org/D56245

Files:
  lib/MC/MCStreamer.cpp


Index: lib/MC/MCStreamer.cpp
===================================================================
--- lib/MC/MCStreamer.cpp
+++ lib/MC/MCStreamer.cpp
@@ -865,13 +865,11 @@
   CurFrame->PrologEnd = Label;
 }
 
-void MCStreamer::EmitCOFFSafeSEH(MCSymbol const *Symbol) {
-}
+void MCStreamer::EmitCOFFSafeSEH(MCSymbol const *Symbol) {}
 
 void MCStreamer::EmitCOFFSymbolIndex(MCSymbol const *Symbol) {}
 
-void MCStreamer::EmitCOFFSectionIndex(MCSymbol const *Symbol) {
-}
+void MCStreamer::EmitCOFFSectionIndex(MCSymbol const *Symbol) {}
 
 void MCStreamer::EmitCOFFSecRel32(MCSymbol const *Symbol, uint64_t Offset) {}
 
@@ -881,9 +879,12 @@
 /// the specified string in the output .s file.  This capability is
 /// indicated by the hasRawTextSupport() predicate.
 void MCStreamer::EmitRawTextImpl(StringRef String) {
-  errs() << "EmitRawText called on an MCStreamer that doesn't support it, "
-  " something must not be fully mc'ized\n";
-  abort();
+  // This is not llvm_unreachable for the sake of out of tree backend
+  // developers who may not have assembly streamers and should serve as a
+  // reminder to not accidentally call EmitRawText in the absence of such.
+  report_fatal_error("EmitRawText called on an MCStreamer that doesn't support "
+                     "it (target backend is likely missing an AsmStreamer "
+                     "implementation)");
 }
 
 void MCStreamer::EmitRawText(const Twine &T) {


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