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

3 files changed, 10 insertions, 1 deletions

diff --git a/lib/Target/XCore/XCoreAsmPrinter.cpp b/lib/Target/XCore/XCoreAsmPrinter.cpp
index 4ab5d75..8b6a722 100644
--- a/lib/Target/XCore/XCoreAsmPrinter.cpp
+++ b/lib/Target/XCore/XCoreAsmPrinter.cpp
@@ -277,7 +277,7 @@ emitFunctionStart(MachineFunction &MF)
     break;
   }
   // (1 << 1) byte aligned
-  EmitAlignment(1, F, 1);
+  EmitAlignment(MF.getAlignment(), F, 1);
   if (TAI->hasDotTypeDotSizeDirective()) {
     O << "\t.type " << CurrentFnName << ",@function\n";
   }
diff --git a/lib/Target/XCore/XCoreISelLowering.cpp b/lib/Target/XCore/XCoreISelLowering.cpp
index 93c5f59..0b65cee 100644
--- a/lib/Target/XCore/XCoreISelLowering.cpp
+++ b/lib/Target/XCore/XCoreISelLowering.cpp
@@ -187,6 +187,12 @@ void XCoreTargetLowering::ReplaceNodeResults(SDNode *N,
   }
 }
 
+/// getFunctionAlignment - Return the alignment of this function.
+unsigned XCoreTargetLowering::
+getFunctionAlignment(const Function *) const {
+  return 1;
+}
+
 //===----------------------------------------------------------------------===//
 //  Misc Lower Operation implementation
 //===----------------------------------------------------------------------===//
diff --git a/lib/Target/XCore/XCoreISelLowering.h b/lib/Target/XCore/XCoreISelLowering.h
index 993ecbd..4f962fa 100644
--- a/lib/Target/XCore/XCoreISelLowering.h
+++ b/lib/Target/XCore/XCoreISelLowering.h
@@ -84,6 +84,9 @@ namespace llvm {
     virtual bool isLegalAddressingMode(const AddrMode &AM,
                                        const Type *Ty) const;
 
+    /// getFunctionAlignment - Return the alignment of this function.
+    virtual unsigned getFunctionAlignment(const Function *F) const;
+
   private:
     const XCoreTargetMachine &TM;
     const XCoreSubtarget &Subtarget;