Add a quick and dirty "loop aligner pass". x86 uses it to align its loops to 16-byte boundaries.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47703 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86TargetAsmInfo.cpp b/lib/Target/X86/X86TargetAsmInfo.cpp
index 42e63ec..acc13ba 100644
--- a/lib/Target/X86/X86TargetAsmInfo.cpp
+++ b/lib/Target/X86/X86TargetAsmInfo.cpp
@@ -47,6 +47,7 @@
   switch (Subtarget->TargetType) {
   case X86Subtarget::isDarwin:
     AlignmentIsInBytes = false;
+    TextAlignFillValue = 0x90;
     GlobalPrefix = "_";
     if (!Subtarget->is64Bit())
       Data64bitsDirective = 0;       // we can't emit a 64-bit unit