15cc812e37
Now, when a type is declared without an explicit "uniform" or "varying" qualifier, its variability is unbound; depending on the context of the declaration, the variability is later finalized. Currently, in almost all cases, types with unbound variability are resolved to varying types; the one exception is typecasts like: "(int)1"; in this case, the fact that (int) has unbound variability carries through to the TypeCastExpr, which in turn notices that the expression being type cast has uniform type and in turn will resolve (int) to (uniform int). Fixes issue #127.
402 lines
17 KiB
C++
402 lines
17 KiB
C++
/*
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Copyright (c) 2010-2011, Intel Corporation
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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* Neither the name of Intel Corporation nor the names of its
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contributors may be used to endorse or promote products derived from
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this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
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IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
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OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/** @file main.cpp
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@brief main() entrypoint implementation for ispc
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*/
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#include "ispc.h"
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#include "module.h"
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#include "util.h"
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#include "type.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <llvm/Support/PrettyStackTrace.h>
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#include <llvm/Support/Signals.h>
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#if defined(LLVM_3_0) || defined(LLVM_3_0svn) || defined(LLVM_3_1svn)
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#include <llvm/Support/TargetRegistry.h>
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#include <llvm/Support/TargetSelect.h>
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#else
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#include <llvm/Target/TargetRegistry.h>
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#include <llvm/Target/TargetSelect.h>
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#include <llvm/Target/SubtargetFeature.h>
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#endif
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#ifdef ISPC_IS_WINDOWS
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#define strcasecmp stricmp
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#define BUILD_DATE __DATE__
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#define BUILD_VERSION ""
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#endif // ISPC_IS_WINDOWS
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static void usage(int ret) {
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printf("This is the Intel(r) SPMD Program Compiler (ispc), build %s (%s)\n\n",
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BUILD_DATE, BUILD_VERSION);
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printf("usage: ispc\n");
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printf(" [--addressing={32,64}]\t\tSelect 32- or 64-bit addressing. (Note that 32-bit\n");
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printf(" \t\taddressing calculations are done by default, even\n");
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printf(" \t\ton 64-bit target architectures.)\n");
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printf(" [--arch={%s}]\t\tSelect target architecture\n",
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Target::SupportedTargetArchs());
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printf(" [--c++-include-file=<name>]\t\tSpecify name of file to emit in #include statement in generated C++ code.\n");
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printf(" [--cpu=<cpu>]\t\t\tSelect target CPU type\n");
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printf(" <cpu>={%s}\n", Target::SupportedTargetCPUs());
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printf(" [-D<foo>]\t\t\t\t#define given value when running preprocessor\n");
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printf(" [--debug]\t\t\t\tPrint information useful for debugging ispc\n");
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printf(" [--emit-asm]\t\t\tGenerate assembly language file as output\n");
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#ifndef LLVM_2_9
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printf(" [--emit-c++]\t\t\tEmit a C++ source file as output\n");
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#endif // !LLVM_2_9
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printf(" [--emit-llvm]\t\t\tEmit LLVM bitode file as output\n");
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printf(" [--emit-obj]\t\t\tGenerate object file file as output (default)\n");
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printf(" [-g]\t\t\t\tGenerate debugging information\n");
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printf(" [--help]\t\t\t\tPrint help\n");
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printf(" [-h <name>/--header-outfile=<name>]\tOutput filename for header\n");
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printf(" [--instrument]\t\t\tEmit instrumentation to gather performance data\n");
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printf(" [--math-lib=<option>]\t\tSelect math library\n");
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printf(" default\t\t\t\tUse ispc's built-in math functions\n");
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printf(" fast\t\t\t\tUse high-performance but lower-accuracy math functions\n");
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printf(" svml\t\t\t\tUse the Intel(r) SVML math libraries\n");
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printf(" system\t\t\t\tUse the system's math library (*may be quite slow*)\n");
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printf(" [--nostdlib]\t\t\tDon't make the ispc standard library available\n");
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printf(" [--nocpp]\t\t\t\tDon't run the C preprocessor\n");
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printf(" [-o <name>/--outfile=<name>]\tOutput filename (may be \"-\" for standard output)\n");
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printf(" [-O0/-O1]\t\t\t\tSet optimization level (-O1 is default)\n");
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printf(" [--opt=<option>]\t\t\tSet optimization option\n");
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printf(" disable-assertions\t\tRemove assertion statements from final code.\n");
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printf(" disable-loop-unroll\t\tDisable loop unrolling.\n");
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printf(" fast-masked-vload\t\tFaster masked vector loads on SSE (may go past end of array)\n");
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printf(" fast-math\t\t\tPerform non-IEEE-compliant optimizations of numeric expressions\n");
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#if 0
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printf(" disable-all-on-optimizations\n");
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printf(" disable-blended-masked-stores\t\tScalarize masked stores on SSE (vs. using vblendps)\n");
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printf(" disable-blending-removal\t\tDisable eliminating blend at same scope\n");
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printf(" disable-coherent-control-flow\t\tDisable coherent control flow optimizations\n");
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printf(" disable-gather-scatter-flattening\tDisable flattening when all lanes are on\n");
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printf(" disable-gather-scatter-optimizations\tDisable improvements to gather/scatter\n");
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printf(" disable-handle-pseudo-memory-ops\n");
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printf(" disable-uniform-control-flow\t\tDisable uniform control flow optimizations\n");
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printf(" disable-uniform-memory-optimizations\tDisable uniform-based coherent memory access\n");
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#endif
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#ifndef ISPC_IS_WINDOWS
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printf(" [--pic]\t\t\t\tGenerate position-independent code\n");
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#endif // !ISPC_IS_WINDOWS
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printf(" [--target=<isa>]\t\t\tSelect target ISA. <isa>={%s}\n", Target::SupportedTargetISAs());
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printf(" [--version]\t\t\t\tPrint ispc version\n");
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printf(" [--werror]\t\t\t\tTreat warnings as errors\n");
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printf(" [--woff]\t\t\t\tDisable warnings\n");
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printf(" [--wno-perf]\t\t\tDon't issue warnings related to performance-related issues\n");
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printf(" <file to compile or \"-\" for stdin>\n");
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exit(ret);
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}
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/** We take arguments from both the command line as well as from the
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ISPC_ARGS environment variable. This function returns a new set of
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arguments representing the ones from those two sources merged together.
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*/
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static void lGetAllArgs(int Argc, char *Argv[], int &argc, char *argv[128]) {
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// Copy over the command line arguments (passed in)
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for (int i = 0; i < Argc; ++i)
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argv[i] = Argv[i];
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argc = Argc;
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// See if we have any set via the environment variable
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const char *env = getenv("ISPC_ARGS");
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if (!env)
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return;
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while (true) {
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// Look for the next space in the string, which delimits the end of
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// the current argument
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const char *end = strchr(env, ' ');
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if (end == NULL)
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end = env + strlen(env);
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int len = end - env;
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// Copy the argument into a newly allocated memory (so we can
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// NUL-terminate it).
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char *ptr = new char[len+1];
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strncpy(ptr, env, len);
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ptr[len] = '\0';
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// Add it to the args array and get out of here
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argv[argc++] = ptr;
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if (*end == '\0')
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break;
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// Advance the starting pointer of the string to the next non-space
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// character
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env = end+1;
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while (*env == ' ')
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++env;
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// Hit the end of the string; get out of here
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if (*env == '\0')
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break;
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}
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}
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int main(int Argc, char *Argv[]) {
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int argc;
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char *argv[128];
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lGetAllArgs(Argc, Argv, argc, argv);
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#if 0
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// Use LLVM's little utility function to print out nice stack traces if
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// we crash
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llvm::sys::PrintStackTraceOnErrorSignal();
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llvm::PrettyStackTraceProgram X(argc, argv);
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#endif
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// initialize available LLVM targets
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LLVMInitializeX86TargetInfo();
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LLVMInitializeX86Target();
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LLVMInitializeX86AsmPrinter();
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LLVMInitializeX86AsmParser();
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LLVMInitializeX86Disassembler();
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#if defined(LLVM_3_0) || defined(LLVM_3_0svn) || defined(LLVM_3_1svn)
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LLVMInitializeX86TargetMC();
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#endif
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AtomicType::Init();
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char *file = NULL;
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const char *headerFileName = NULL;
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const char *outFileName = NULL;
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const char *includeFileName = NULL;
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// Initiailize globals early so that we can set various option values
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// as we're parsing below
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g = new Globals;
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bool debugSet = false, optSet = false;
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Module::OutputType ot = Module::Object;
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bool generatePIC = false;
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const char *arch = NULL, *cpu = NULL, *target = NULL;
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for (int i = 1; i < argc; ++i) {
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if (!strcmp(argv[i], "--help"))
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usage(0);
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else if (!strncmp(argv[i], "-D", 2))
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g->cppArgs.push_back(argv[i]);
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else if (!strncmp(argv[i], "--addressing=", 13)) {
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if (atoi(argv[i] + 13) == 64)
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g->opt.force32BitAddressing = false;
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else if (atoi(argv[i] + 13) == 32)
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g->opt.force32BitAddressing = true;
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else {
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fprintf(stderr, "Addressing width \"%s\" invalid--only 32 and "
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"64 are allowed.\n", argv[i]+13);
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usage(1);
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}
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}
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else if (!strncmp(argv[i], "--arch=", 7))
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arch = argv[i] + 7;
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else if (!strncmp(argv[i], "--cpu=", 6))
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cpu = argv[i] + 6;
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else if (!strcmp(argv[i], "--fast-math")) {
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fprintf(stderr, "--fast-math option has been renamed to --opt=fast-math!\n");
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usage(1);
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}
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else if (!strcmp(argv[i], "--fast-masked-vload")) {
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fprintf(stderr, "--fast-masked-vload option has been renamed to "
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"--opt=fast-masked-vload!\n");
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usage(1);
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}
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else if (!strcmp(argv[i], "--debug"))
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g->debugPrint = true;
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else if (!strcmp(argv[i], "--instrument"))
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g->emitInstrumentation = true;
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else if (!strcmp(argv[i], "-g")) {
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g->generateDebuggingSymbols = true;
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debugSet = true;
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}
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else if (!strcmp(argv[i], "--emit-asm"))
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ot = Module::Asm;
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#ifndef LLVM_2_9
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else if (!strcmp(argv[i], "--emit-c++"))
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ot = Module::CXX;
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#endif // !LLVM_2_9
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else if (!strcmp(argv[i], "--emit-llvm"))
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ot = Module::Bitcode;
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else if (!strcmp(argv[i], "--emit-obj"))
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ot = Module::Object;
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else if (!strcmp(argv[i], "--target")) {
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// FIXME: should remove this way of specifying the target...
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if (++i == argc) {
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fprintf(stderr, "No target specified after --target option.\n");
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usage(1);
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}
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target = argv[i];
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}
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else if (!strncmp(argv[i], "--target=", 9))
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target = argv[i] + 9;
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else if (!strncmp(argv[i], "--math-lib=", 11)) {
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const char *lib = argv[i] + 11;
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if (!strcmp(lib, "default"))
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g->mathLib = Globals::Math_ISPC;
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else if (!strcmp(lib, "fast"))
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g->mathLib = Globals::Math_ISPCFast;
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else if (!strcmp(lib, "svml"))
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g->mathLib = Globals::Math_SVML;
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else if (!strcmp(lib, "system"))
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g->mathLib = Globals::Math_System;
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else {
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fprintf(stderr, "Unknown --math-lib= option \"%s\".\n", lib);
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usage(1);
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}
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}
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else if (!strncmp(argv[i], "--opt=", 6)) {
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const char *opt = argv[i] + 6;
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if (!strcmp(opt, "fast-math"))
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g->opt.fastMath = true;
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else if (!strcmp(opt, "fast-masked-vload"))
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g->opt.fastMaskedVload = true;
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else if (!strcmp(opt, "disable-assertions"))
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g->opt.disableAsserts = true;
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else if (!strcmp(opt, "disable-loop-unroll"))
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g->opt.unrollLoops = false;
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// These are only used for performance tests of specific
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// optimizations
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else if (!strcmp(opt, "disable-all-on-optimizations"))
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g->opt.disableMaskAllOnOptimizations = true;
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else if (!strcmp(opt, "disable-handle-pseudo-memory-ops"))
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g->opt.disableHandlePseudoMemoryOps = true;
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else if (!strcmp(opt, "disable-blended-masked-stores"))
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g->opt.disableBlendedMaskedStores = true;
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else if (!strcmp(opt, "disable-coherent-control-flow"))
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g->opt.disableCoherentControlFlow = true;
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else if (!strcmp(opt, "disable-uniform-control-flow"))
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g->opt.disableUniformControlFlow = true;
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else if (!strcmp(opt, "disable-gather-scatter-optimizations"))
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g->opt.disableGatherScatterOptimizations = true;
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else if (!strcmp(opt, "disable-blending-removal"))
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g->opt.disableMaskedStoreToStore = true;
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else if (!strcmp(opt, "disable-gather-scatter-flattening"))
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g->opt.disableGatherScatterFlattening = true;
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else if (!strcmp(opt, "disable-uniform-memory-optimizations"))
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g->opt.disableUniformMemoryOptimizations = true;
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else {
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fprintf(stderr, "Unknown --opt= option \"%s\".\n", opt);
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usage(1);
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}
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}
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else if (!strcmp(argv[i], "--woff") || !strcmp(argv[i], "-woff")) {
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g->disableWarnings = true;
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g->emitPerfWarnings = false;
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}
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else if (!strcmp(argv[i], "--werror"))
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g->warningsAsErrors = true;
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else if (!strcmp(argv[i], "--nowrap"))
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g->disableLineWrap = true;
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else if (!strcmp(argv[i], "--wno-perf") || !strcmp(argv[i], "-wno-perf"))
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g->emitPerfWarnings = false;
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else if (!strcmp(argv[i], "-o")) {
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if (++i == argc) {
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fprintf(stderr, "No output file specified after -o option.\n");
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usage(1);
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}
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outFileName = argv[i];
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}
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else if (!strcmp(argv[i], "--outfile="))
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outFileName = argv[i] + strlen("--outfile=");
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else if (!strcmp(argv[i], "-h")) {
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if (++i == argc) {
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fprintf(stderr, "No header file name specified after -h option.\n");
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usage(1);
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}
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headerFileName = argv[i];
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}
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else if (!strncmp(argv[i], "--header-outfile=", 17)) {
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headerFileName = argv[i] + strlen("--header-outfile=");
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}
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else if (!strncmp(argv[i], "--c++-include-file=", 19)) {
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includeFileName = argv[i] + strlen("--c++-include-file=");
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}
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else if (!strcmp(argv[i], "-O0")) {
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g->opt.level = 0;
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optSet = true;
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}
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else if (!strcmp(argv[i], "-O") || !strcmp(argv[i], "-O1") ||
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!strcmp(argv[i], "-O2") || !strcmp(argv[i], "-O3")) {
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g->opt.level = 1;
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optSet = true;
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}
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else if (!strcmp(argv[i], "-"))
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;
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else if (!strcmp(argv[i], "--nostdlib"))
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g->includeStdlib = false;
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else if (!strcmp(argv[i], "--nocpp"))
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g->runCPP = false;
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#ifndef ISPC_IS_WINDOWS
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else if (!strcmp(argv[i], "--pic"))
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generatePIC = true;
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#endif // !ISPC_IS_WINDOWS
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else if (!strcmp(argv[i], "-v") || !strcmp(argv[i], "--version")) {
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printf("Intel(r) SPMD Program Compiler (ispc) build %s (%s)\n",
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BUILD_DATE, BUILD_VERSION);
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return 0;
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}
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else if (argv[i][0] == '-') {
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fprintf(stderr, "Unknown option \"%s\".\n", argv[i]);
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usage(1);
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}
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else {
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if (file != NULL) {
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fprintf(stderr, "Multiple input files specified on command "
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"line: \"%s\" and \"%s\".\n", file, argv[i]);
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usage(1);
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}
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else
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file = argv[i];
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}
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}
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// If the user specified -g, then the default optimization level is 0.
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// If -g wasn't specified, the default optimization level is 1 (full
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// optimization).
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if (debugSet && !optSet)
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g->opt.level = 0;
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if (outFileName == NULL && headerFileName == NULL)
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Warning(SourcePos(), "No output file or header file name specified. "
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"Program will be compiled and warnings/errors will "
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"be issued, but no output will be generated.");
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return Module::CompileAndOutput(file, arch, cpu, target, generatePIC,
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ot, outFileName, headerFileName,
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includeFileName);
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}
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