Generalize emitAbsoluteSymbolDiff.

This makes emitAbsoluteSymbolDiff always succeed and moves logic from the asm
printer to it.

The object one now also works on ELF. If two symbols are in the same fragment,
we will never move them apart.

llvm-svn: 239552

1 files changed, 1 insertions, 19 deletions

diff --git a/llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp b/llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
index 04b936afa06..dd1d9a980d8 100644
--- a/llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
@@ -1590,25 +1590,7 @@ void AsmPrinter::EmitInt32(int Value) const {
 /// .set if it avoids relocations.
 void AsmPrinter::EmitLabelDifference(const MCSymbol *Hi, const MCSymbol *Lo,
                                      unsigned Size) const {
-  if (!MAI->doesDwarfUseRelocationsAcrossSections())
-    if (OutStreamer->emitAbsoluteSymbolDiff(Hi, Lo, Size))
-      return;
-
-  // Get the Hi-Lo expression.
-  const MCExpr *Diff =
-    MCBinaryExpr::createSub(MCSymbolRefExpr::create(Hi, OutContext),
-                            MCSymbolRefExpr::create(Lo, OutContext),
-                            OutContext);
-
-  if (!MAI->doesSetDirectiveSuppressesReloc()) {
-    OutStreamer->EmitValue(Diff, Size);
-    return;
-  }
-
-  // Otherwise, emit with .set (aka assignment).
-  MCSymbol *SetLabel = createTempSymbol("set");
-  OutStreamer->EmitAssignment(SetLabel, Diff);
-  OutStreamer->EmitSymbolValue(SetLabel, Size);
+  OutStreamer->emitAbsoluteSymbolDiff(Hi, Lo, Size);
 }
 
 /// EmitLabelPlusOffset - Emit something like ".long Label+Offset"