commit 59ff3c913449402ad5447bbe3ae6338402fb84b0
author Rafael Espindola <rafael.espindola@gmail.com> Wed Sep 22 22:27:05 2010 +0000
committer Rafael Espindola <rafael.espindola@gmail.com> Wed Sep 22 22:27:05 2010 +0000
tree cb9001433203273706549d7ef43c044962d38fae
parent e07b75e069969558c3fbb2f5bfb9a652f6ea1d6b

Avoid some Mach-O specific alignment being done on ELF.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114594 91177308-0d34-0410-b5e6-96231b3b80d8

lib/MC/MCAssembler.cpp

diff --git a/lib/MC/MCAssembler.cpp b/lib/MC/MCAssembler.cpp
index bb12499..c1dd288 100644
--- a/lib/MC/MCAssembler.cpp
+++ b/lib/MC/MCAssembler.cpp
@@ -221,9 +221,11 @@
 /* *** */
 
 MCAssembler::MCAssembler(MCContext &_Context, TargetAsmBackend &_Backend,
-                         MCCodeEmitter &_Emitter, raw_ostream &_OS)
+                         MCCodeEmitter &_Emitter, bool _PadSectionToAlignment,
+                         raw_ostream &_OS)
   : Context(_Context), Backend(_Backend), Emitter(_Emitter),
-    OS(_OS), RelaxAll(false), SubsectionsViaSymbols(false)
+    OS(_OS), RelaxAll(false), SubsectionsViaSymbols(false),
+    PadSectionToAlignment(_PadSectionToAlignment)
 {
 }
 
@@ -712,25 +714,25 @@
   // Insert additional align fragments for concrete sections to explicitly pad
   // the previous section to match their alignment requirements. This is for
   // 'gas' compatibility, it shouldn't strictly be necessary.
-  //
-  // FIXME: This may be Mach-O specific.
-  for (unsigned i = 1, e = Layout.getSectionOrder().size(); i < e; ++i) {
-    MCSectionData *SD = Layout.getSectionOrder()[i];
+  if (PadSectionToAlignment) {
+    for (unsigned i = 1, e = Layout.getSectionOrder().size(); i < e; ++i) {
+      MCSectionData *SD = Layout.getSectionOrder()[i];
 
-    // Ignore sections without alignment requirements.
-    unsigned Align = SD->getAlignment();
-    if (Align <= 1)
-      continue;
+      // Ignore sections without alignment requirements.
+      unsigned Align = SD->getAlignment();
+      if (Align <= 1)
+        continue;
 
-    // Ignore virtual sections, they don't cause file size modifications.
-    if (getBackend().isVirtualSection(SD->getSection()))
-      continue;
+      // Ignore virtual sections, they don't cause file size modifications.
+      if (getBackend().isVirtualSection(SD->getSection()))
+        continue;
 
-    // Otherwise, create a new align fragment at the end of the previous
-    // section.
-    MCAlignFragment *AF = new MCAlignFragment(Align, 0, 1, Align,
-                                              Layout.getSectionOrder()[i - 1]);
-    AF->setOnlyAlignAddress(true);
+      // Otherwise, create a new align fragment at the end of the previous
+      // section.
+      MCAlignFragment *AF = new MCAlignFragment(Align, 0, 1, Align,
+                                                Layout.getSectionOrder()[i - 1]);
+      AF->setOnlyAlignAddress(true);
+    }
   }
 
   // Create dummy fragments and assign section ordinals.