Add an "alignment" field to the MachineFunction object. It makes more sense to

have the alignment be calculated up front, and have the back-ends obey whatever
alignment is decided upon.

This allows for future work that would allow for precise no-op placement and the
like.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74564 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/Sparc/AsmPrinter/SparcAsmPrinter.cpp

@@ -109,7 +109,7 @@ bool SparcAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
   // Print out the label for the function.
   const Function *F = MF.getFunction();
   SwitchToSection(TAI->SectionForGlobal(F));
-  EmitAlignment(4, F);
+  EmitAlignment(MF.getAlignment(), F);
   O << "\t.globl\t" << CurrentFnName << '\n';
 
   printVisibility(CurrentFnName, F->getVisibility());

lib/Target/Sparc/SparcISelLowering.cpp

@@ -1047,3 +1047,8 @@ SparcTargetLowering::isOffsetFoldingLegal(const GlobalAddressSDNode *GA) const {
   // The Sparc target isn't yet aware of offsets.
   return false;
 }
+
+/// getFunctionAlignment - Return the function alignment.
+unsigned SparcTargetLowering::getFunctionAlignment(const Function *) const {
+  return 4;
+}

lib/Target/Sparc/SparcISelLowering.h

@@ -73,6 +73,9 @@ namespace llvm {
                                       MVT VT) const;
 
     virtual bool isOffsetFoldingLegal(const GlobalAddressSDNode *GA) const;
+
+    /// getFunctionAlignment - Return the function alignment.
+    virtual unsigned getFunctionAlignment(const Function *F) const;
   };
 } // end namespace llvm