diff options
Diffstat (limited to 'tools/opt')
| -rw-r--r-- | tools/opt/Makefile | 10 | ||||
| -rw-r--r-- | tools/opt/opt.cpp | 98 | ||||
| -rwxr-xr-x | tools/opt/test.sh | 4 | ||||
| -rwxr-xr-x | tools/opt/testinline.sh | 3 | ||||
| -rwxr-xr-x | tools/opt/teststrip.sh | 3 |
5 files changed, 118 insertions, 0 deletions
diff --git a/tools/opt/Makefile b/tools/opt/Makefile new file mode 100644 index 0000000..71bdcb8 --- /dev/null +++ b/tools/opt/Makefile @@ -0,0 +1,10 @@ +LEVEL = ../.. +include $(LEVEL)/Makefile.common + +all:: opt +clean :: + rm -f opt + +opt : $(ObjectsG) + $(LinkG) -o $@ $(ObjectsG) -lvmcore -lanalysis -lbcreader -lbcwriter \ + -lopt -lasmwriter diff --git a/tools/opt/opt.cpp b/tools/opt/opt.cpp new file mode 100644 index 0000000..a0cf140 --- /dev/null +++ b/tools/opt/opt.cpp @@ -0,0 +1,98 @@ +//===------------------------------------------------------------------------=== +// LLVM 'OPT' UTILITY +// +// This utility may be invoked in the following manner: +// opt --help - Output information about command line switches +// opt [options] -dce - Run a dead code elimination pass on input +// bytecodes +// opt [options] -constprop - Run a constant propogation pass on input +// bytecodes +// opt [options] -inline - Run a method inlining pass on input bytecodes +// opt [options] -strip - Strip symbol tables out of methods +// opt [options] -mstrip - Strip module & method symbol tables +// +// Optimizations may be specified an arbitrary number of times on the command +// line, they are run in the order specified. +// +// TODO: Add a -all option to keep applying all optimizations until the program +// stops permuting. +// TODO: Add a -h command line arg that prints all available optimizations +// TODO: Add a -q command line arg that quiets "XXX pass made modifications" +// +//===------------------------------------------------------------------------=== + +#include <iostream.h> +#include <fstream.h> +#include "llvm/Module.h" +#include "llvm/Bytecode/Reader.h" +#include "llvm/Bytecode/Writer.h" +#include "llvm/Tools/CommandLine.h" +#include "llvm/Opt/AllOpts.h" + +struct { + const string ArgName, Name; + bool (*OptPtr)(Module *C); +} OptTable[] = { + { "-dce", "Dead Code Elimination", DoDeadCodeElimination }, + { "-constprop","Constant Propogation", DoConstantPropogation }, + { "-inline" ,"Method Inlining", DoMethodInlining }, + { "-strip" ,"Strip Symbols", DoSymbolStripping }, + { "-mstrip" ,"Strip Module Symbols", DoFullSymbolStripping }, +}; + +int main(int argc, char **argv) { + ToolCommandLine Opts(argc, argv, false); + bool Quiet = false; + + for (int i = 1; i < argc; i++) { + if (string(argv[i]) == string("--help")) { + cerr << argv[0] << " usage:\n" + << " " << argv[0] << " --help - Print this usage information\n"; + return 1; + } else if (string(argv[i]) == string("-q")) { + Quiet = true; argv[i] = 0; + } + } + + ostream *Out = &cout; // Default to printing to stdout... + + Module *C = ParseBytecodeFile(Opts.getInputFilename()); + if (C == 0) { + cerr << "bytecode didn't read correctly.\n"; + return 1; + } + + + for (int i = 1; i < argc; i++) { + if (argv[i] == 0) continue; + unsigned j; + for (j = 0; j < sizeof(OptTable)/sizeof(OptTable[0]); j++) { + if (string(argv[i]) == OptTable[j].ArgName) { + if (OptTable[j].OptPtr(C) && !Quiet) + cerr << OptTable[j].Name << " pass made modifications!\n"; + break; + } + } + + if (j == sizeof(OptTable)/sizeof(OptTable[0])) + cerr << "'" << argv[i] << "' argument unrecognized: ignored\n"; + } + + if (Opts.getOutputFilename() != "-") { + Out = new ofstream(Opts.getOutputFilename().c_str(), + (Opts.getForce() ? 0 : ios::noreplace)|ios::out); + if (!Out->good()) { + cerr << "Error opening " << Opts.getOutputFilename() + << "!\n"; + delete C; + return 1; + } + } + + // Okay, we're done now... write out result... + WriteBytecodeToFile(C, *Out); + delete C; + + if (Out != &cout) delete Out; + return 0; +} diff --git a/tools/opt/test.sh b/tools/opt/test.sh new file mode 100755 index 0000000..b6d13f4 --- /dev/null +++ b/tools/opt/test.sh @@ -0,0 +1,4 @@ +#!/bin/sh + +../as/as < ../../test/$1 | ./opt -constprop -dce | ../dis/dis + diff --git a/tools/opt/testinline.sh b/tools/opt/testinline.sh new file mode 100755 index 0000000..ff16a66 --- /dev/null +++ b/tools/opt/testinline.sh @@ -0,0 +1,3 @@ +#!/bin/sh + +../as/as < ../../test/$1 | ./opt -inline -constprop -dce | dis diff --git a/tools/opt/teststrip.sh b/tools/opt/teststrip.sh new file mode 100755 index 0000000..2cff3bf --- /dev/null +++ b/tools/opt/teststrip.sh @@ -0,0 +1,3 @@ +#!/bin/sh + +../as/as < ../../test/$1 | ./opt -strip | dis |