It's not necessary to do rounding for alloca operations when the requested
alignment is equal to the stack alignment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40004 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/CBackend/CTargetMachine.h b/lib/Target/CBackend/CTargetMachine.h
new file mode 100644
index 0000000..38c738e
--- /dev/null
+++ b/lib/Target/CBackend/CTargetMachine.h
@@ -0,0 +1,41 @@
+//===-- CTargetMachine.h - TargetMachine for the C backend ------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file was developed by the LLVM research group and is distributed under
+// the University of Illinois Open Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file declares the TargetMachine that is used by the C backend.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef CTARGETMACHINE_H
+#define CTARGETMACHINE_H
+
+#include "llvm/Target/TargetMachine.h"
+#include "llvm/Target/TargetData.h"
+
+namespace llvm {
+
+struct CTargetMachine : public TargetMachine {
+ const TargetData DataLayout; // Calculates type size & alignment
+
+ CTargetMachine(const Module &M, const std::string &FS)
+ : DataLayout(&M) {}
+
+ virtual bool WantsWholeFile() const { return true; }
+ virtual bool addPassesToEmitWholeFile(PassManager &PM, std::ostream &Out,
+ CodeGenFileType FileType, bool Fast);
+
+ // This class always works, but shouldn't be the default in most cases.
+ static unsigned getModuleMatchQuality(const Module &M) { return 1; }
+
+ virtual const TargetData *getTargetData() const { return &DataLayout; }
+};
+
+} // End llvm namespace
+
+
+#endif