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author | Che-Liang Chiou <clchiou@gmail.com> | 2011-10-04 15:14:51 +0000 |
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committer | Che-Liang Chiou <clchiou@gmail.com> | 2011-10-04 15:14:51 +0000 |
commit | f98742565765a10558824ea45f0d9a70843ed0d9 (patch) | |
tree | 88c769a0ed43e8d86df7354c4826df16f942c113 /lib/TableGen/Main.cpp | |
parent | 34804c4f4793abbcb908c79fe9512c03090d8520 (diff) | |
download | external_llvm-f98742565765a10558824ea45f0d9a70843ed0d9.zip external_llvm-f98742565765a10558824ea45f0d9a70843ed0d9.tar.gz external_llvm-f98742565765a10558824ea45f0d9a70843ed0d9.tar.bz2 |
tblgen: add preprocessor as a separate mode
This patch adds a preprocessor that can expand nested for-loops for
saving some copy-n-paste in *.td files.
The preprocessor is not yet integrated with TGParser, and so it has
no direct effect on *.td inputs. However, you may preprocess an td
input (and only preprocess it).
To test the proprecessor, type:
tblgen -E -o $@ $<
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141079 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/TableGen/Main.cpp')
-rw-r--r-- | lib/TableGen/Main.cpp | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/lib/TableGen/Main.cpp b/lib/TableGen/Main.cpp index 01bc55e..e15c09f 100644 --- a/lib/TableGen/Main.cpp +++ b/lib/TableGen/Main.cpp @@ -16,6 +16,7 @@ //===----------------------------------------------------------------------===// #include "TGParser.h" +#include "TGPreprocessor.h" #include "llvm/ADT/OwningPtr.h" #include "llvm/Support/CommandLine.h" #include "llvm/Support/MemoryBuffer.h" @@ -43,6 +44,12 @@ namespace { cl::list<std::string> IncludeDirs("I", cl::desc("Directory of include files"), cl::value_desc("directory"), cl::Prefix); + + cl::opt<bool> + PreprocessOnly("E", + cl::desc("Stop after the preprocessing stage; " + "This is work in progress and has no effect yet"), + cl::init(false)); } namespace llvm { @@ -67,6 +74,22 @@ int TableGenMain(char *argv0, TableGenAction &Action) { // it later. SrcMgr.setIncludeDirs(IncludeDirs); + // TODO(clchiou): Integrate preprocessor into TGParser + if (PreprocessOnly) { + std::string Error; + tool_output_file Out(OutputFilename.c_str(), Error); + if (!Error.empty()) { + errs() << argv0 << ": error opening " << OutputFilename + << ":" << Error << "\n"; + return 1; + } + TGPreprocessor Preprocessor(SrcMgr, Out); + if (Preprocessor.PreprocessFile()) + return 1; + Out.keep(); + return 0; + } + TGParser Parser(SrcMgr, Records); if (Parser.ParseFile()) |