Global ctors / dtors alignment shouldn't be hard-coded at 4. e.g. It could be 8 for...

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37421 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/AsmPrinter.cpp b/lib/CodeGen/AsmPrinter.cpp
index 07319d595a1f2d7280121fb4283515b489d4ff66..586472c38ef9b17f2021b7c36a7bc797a43eef7e 100644 (file)
--- a/lib/CodeGen/AsmPrinter.cpp
+++ b/lib/CodeGen/AsmPrinter.cpp
@@ -327,16 +327,18 @@ bool AsmPrinter::EmitSpecialLLVMGlobal(const GlobalVariable *GV) {
     return true;
   }
 
+  const TargetData *TD = TM.getTargetData();
+  unsigned Align = Log2_32(TD->getPointerPrefAlignment());
   if (GV->getName() == "llvm.global_ctors" && GV->use_empty()) {
     SwitchToDataSection(TAI->getStaticCtorsSection());
-    EmitAlignment(2, 0);
+    EmitAlignment(Align, 0);
     EmitXXStructorList(GV->getInitializer());
     return true;
   } 
   
   if (GV->getName() == "llvm.global_dtors" && GV->use_empty()) {
     SwitchToDataSection(TAI->getStaticDtorsSection());
-    EmitAlignment(2, 0);
+    EmitAlignment(Align, 0);
     EmitXXStructorList(GV->getInitializer());
     return true;
   }