svn commit: r328595 - head/contrib/llvm/lib/MC

[Ed Maste]

Author: emaste
Date: Tue Jan 30 16:42:08 2018
New Revision: 328595
URL: https://svnweb.freebsd.org/changeset/base/328595

Log:
  Pull in r322123 from upstream llvm trunk (by Rafael Espíndola):
  
    Don't create MCFillFragment directly.
  
    Instead use higher level APIs that take care of most bookkeeping.

Modified:
  head/contrib/llvm/lib/MC/MCMachOStreamer.cpp
  head/contrib/llvm/lib/MC/MCWinCOFFStreamer.cpp

Modified: head/contrib/llvm/lib/MC/MCMachOStreamer.cpp
==============================================================================
--- head/contrib/llvm/lib/MC/MCMachOStreamer.cpp	Tue Jan 30 16:41:38 2018	(r328594)
+++ head/contrib/llvm/lib/MC/MCMachOStreamer.cpp	Tue Jan 30 16:42:08 2018	(r328595)
@@ -411,29 +411,19 @@ void MCMachOStreamer::EmitLocalCommonSymbol(MCSymbol *
 
 void MCMachOStreamer::EmitZerofill(MCSection *Section, MCSymbol *Symbol,
                                    uint64_t Size, unsigned ByteAlignment) {
-  getAssembler().registerSection(*Section);
-
-  // The symbol may not be present, which only creates the section.
-  if (!Symbol)
-    return;
-
   // On darwin all virtual sections have zerofill type.
   assert(Section->isVirtualSection() && "Section does not have zerofill type!");
 
-  assert(Symbol->isUndefined() && "Cannot define a symbol twice!");
+  PushSection();
+  SwitchSection(Section);
 
-  getAssembler().registerSymbol(*Symbol);
-
-  // Emit an align fragment if necessary.
-  if (ByteAlignment != 1)
-    new MCAlignFragment(ByteAlignment, 0, 0, ByteAlignment, Section);
-
-  MCFragment *F = new MCFillFragment(0, Size, Section);
-  Symbol->setFragment(F);
-
-  // Update the maximum alignment on the zero fill section if necessary.
-  if (ByteAlignment > Section->getAlignment())
-    Section->setAlignment(ByteAlignment);
+  // The symbol may not be present, which only creates the section.
+  if (Symbol) {
+    EmitValueToAlignment(ByteAlignment, 0, 1, 0);
+    EmitLabel(Symbol);
+    EmitZeros(Size);
+  }
+  PopSection();
 }
 
 // This should always be called with the thread local bss section.  Like the

Modified: head/contrib/llvm/lib/MC/MCWinCOFFStreamer.cpp
==============================================================================
--- head/contrib/llvm/lib/MC/MCWinCOFFStreamer.cpp	Tue Jan 30 16:41:38 2018	(r328594)
+++ head/contrib/llvm/lib/MC/MCWinCOFFStreamer.cpp	Tue Jan 30 16:42:08 2018	(r328595)
@@ -257,20 +257,13 @@ void MCWinCOFFStreamer::EmitLocalCommonSymbol(MCSymbol
   auto *Symbol = cast<MCSymbolCOFF>(S);
 
   MCSection *Section = getContext().getObjectFileInfo()->getBSSSection();
-  getAssembler().registerSection(*Section);
-  if (Section->getAlignment() < ByteAlignment)
-    Section->setAlignment(ByteAlignment);
-
-  getAssembler().registerSymbol(*Symbol);
+  PushSection();
+  SwitchSection(Section);
+  EmitValueToAlignment(ByteAlignment, 0, 1, 0);
+  EmitLabel(Symbol);
   Symbol->setExternal(false);
-
-  if (ByteAlignment != 1)
-    new MCAlignFragment(ByteAlignment, /*Value=*/0, /*ValueSize=*/0,
-                        ByteAlignment, Section);
-
-  MCFillFragment *Fragment = new MCFillFragment(
-      /*Value=*/0, Size, Section);
-  Symbol->setFragment(Fragment);
+  EmitZeros(Size);
+  PopSection();
 }
 
 void MCWinCOFFStreamer::EmitZerofill(MCSection *Section, MCSymbol *Symbol,