Add support to tablegen for auto-generating arm_neon.h from a tablegen description
of the intrinsics. The goal is to auto-generate both support for GCC-style (vector)
and ARM-style (struct of vector) intrinsics.
This is work in progress, but will be completed soon.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104910 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/NeonEmitter.cpp b/utils/TableGen/NeonEmitter.cpp
new file mode 100644
index 0000000..dcbcf75
--- /dev/null
+++ b/utils/TableGen/NeonEmitter.cpp
@@ -0,0 +1,62 @@
+//===- NeonEmitter.cpp - Generate arm_neon.h for use with clang -*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This tablegen backend is responsible for emitting arm_neon.h, which includes
+// a declaration and definition of each function specified by the ARM NEON
+// compiler interface. See ARM document DUI0348B.
+//
+//===----------------------------------------------------------------------===//
+
+#include "NeonEmitter.h"
+#include "Record.h"
+#include "llvm/ADT/StringExtras.h"
+#include "llvm/ADT/StringMap.h"
+#include <string>
+
+using namespace llvm;
+
+void NeonEmitter::run(raw_ostream &OS) {
+ EmitSourceFileHeader("ARM NEON Header", OS);
+
+ // FIXME: emit license into file?
+
+ OS << "#ifndef __ARM_NEON_H\n";
+ OS << "#define __ARM_NEON_H\n\n";
+
+ OS << "#ifndef __ARM_NEON__\n";
+ OS << "#error \"NEON support not enabled\"\n";
+ OS << "#endif\n\n";
+
+ OS << "#include <stdint.h>\n\n";
+
+ // EmitTypedefs(OS);
+
+ // Process Records
+
+ std::vector<Record*> RV = Records.getAllDerivedDefinitions("Inst");
+
+ // Unique the pattern types, and assign them
+
+ // emit #define directives for uniq'd prototypes
+
+ // emit record directives
+
+ for (unsigned i = 0, e = RV.size(); i != e; ++i) {
+ Record *R = RV[i];
+
+ OS << LowercaseString(R->getName()) << "\n";
+
+ std::string Types = R->getValueAsString("Types");
+ std::string Pattern = R->getValueAsString("Pattern");
+
+ OS << Types << "\n" << Pattern << "\n\n";
+ }
+
+ OS << "#endif /* __ARM_NEON_H */\n";
+}