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rustc: Add a Link module; move crate writing to it to slim down trans slightly

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This commit is contained in:
Patrick Walton 2011-05-05 10:48:02 -07:00
parent 729648282b
commit fea623211f
5 changed files with 197 additions and 173 deletions
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176
src/comp/back/Link.rs Normal file
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import driver.session;
import lib.llvm.llvm;
import middle.trans;
import std._str;
import lib.llvm.llvm.ModuleRef;
import lib.llvm.llvm.ValueRef;
import lib.llvm.mk_pass_manager;
import lib.llvm.mk_target_data;
import lib.llvm.mk_type_names;
tag output_type {
output_type_none;
output_type_bitcode;
output_type_assembly;
output_type_object;
}
mod Write {
fn is_object_or_assembly(output_type ot) -> bool {
if (ot == output_type_assembly) {
ret true;
}
if (ot == output_type_object) {
ret true;
}
ret false;
}
// Decides what to call an intermediate file, given the name of the output
// and the extension to use.
fn mk_intermediate_name(str output_path, str extension) -> str {
auto dot_pos = _str.index(output_path, '.' as u8);
auto stem;
if (dot_pos < 0) {
stem = output_path;
} else {
stem = _str.substr(output_path, 0u, dot_pos as uint);
}
ret stem + "." + extension;
}
fn run_passes(session.session sess, ModuleRef llmod, str output) {
auto pm = mk_pass_manager();
auto opts = sess.get_opts();
// TODO: run the linter here also, once there are llvm-c bindings for
// it.
// Generate a pre-optimization intermediate file if -save-temps was
// specified.
if (opts.save_temps) {
alt (opts.output_type) {
case (output_type_bitcode) {
if (opts.optimize) {
auto filename = mk_intermediate_name(output,
"no-opt.bc");
llvm.LLVMWriteBitcodeToFile(llmod,
_str.buf(filename));
}
}
case (_) {
auto filename = mk_intermediate_name(output, "bc");
llvm.LLVMWriteBitcodeToFile(llmod, _str.buf(filename));
}
}
}
// FIXME: This is mostly a copy of the bits of opt's -O2 that are
// available in the C api.
// FIXME2: We might want to add optimization levels like -O1, -O2,
// -Os, etc
// FIXME3: Should we expose and use the pass lists used by the opt
// tool?
if (opts.optimize) {
auto fpm = mk_pass_manager();
// createStandardFunctionPasses
llvm.LLVMAddTypeBasedAliasAnalysisPass(fpm.llpm);
llvm.LLVMAddBasicAliasAnalysisPass(fpm.llpm);
llvm.LLVMAddCFGSimplificationPass(fpm.llpm);
llvm.LLVMAddScalarReplAggregatesPass(fpm.llpm);
llvm.LLVMAddEarlyCSEPass(fpm.llpm);
llvm.LLVMRunPassManager(fpm.llpm, llmod);
// createStandardModulePasses
llvm.LLVMAddTypeBasedAliasAnalysisPass(pm.llpm);
llvm.LLVMAddBasicAliasAnalysisPass(pm.llpm);
llvm.LLVMAddGlobalOptimizerPass(pm.llpm);
llvm.LLVMAddIPSCCPPass(pm.llpm);
llvm.LLVMAddDeadArgEliminationPass(pm.llpm);
llvm.LLVMAddInstructionCombiningPass(pm.llpm);
llvm.LLVMAddCFGSimplificationPass(pm.llpm);
llvm.LLVMAddPruneEHPass(pm.llpm);
llvm.LLVMAddFunctionInliningPass(pm.llpm);
llvm.LLVMAddFunctionAttrsPass(pm.llpm);
llvm.LLVMAddScalarReplAggregatesPassSSA(pm.llpm);
llvm.LLVMAddEarlyCSEPass(pm.llpm);
llvm.LLVMAddSimplifyLibCallsPass(pm.llpm);
llvm.LLVMAddJumpThreadingPass(pm.llpm);
llvm.LLVMAddCorrelatedValuePropagationPass(pm.llpm);
llvm.LLVMAddCFGSimplificationPass(pm.llpm);
llvm.LLVMAddInstructionCombiningPass(pm.llpm);
llvm.LLVMAddTailCallEliminationPass(pm.llpm);
llvm.LLVMAddCFGSimplificationPass(pm.llpm);
llvm.LLVMAddReassociatePass(pm.llpm);
llvm.LLVMAddLoopRotatePass(pm.llpm);
llvm.LLVMAddLICMPass(pm.llpm);
llvm.LLVMAddLoopUnswitchPass(pm.llpm);
llvm.LLVMAddInstructionCombiningPass(pm.llpm);
llvm.LLVMAddIndVarSimplifyPass(pm.llpm);
llvm.LLVMAddLoopIdiomPass(pm.llpm);
llvm.LLVMAddLoopDeletionPass(pm.llpm);
llvm.LLVMAddLoopUnrollPass(pm.llpm);
llvm.LLVMAddInstructionCombiningPass(pm.llpm);
llvm.LLVMAddGVNPass(pm.llpm);
llvm.LLVMAddMemCpyOptPass(pm.llpm);
llvm.LLVMAddSCCPPass(pm.llpm);
llvm.LLVMAddInstructionCombiningPass(pm.llpm);
llvm.LLVMAddJumpThreadingPass(pm.llpm);
llvm.LLVMAddCorrelatedValuePropagationPass(pm.llpm);
llvm.LLVMAddDeadStoreEliminationPass(pm.llpm);
llvm.LLVMAddAggressiveDCEPass(pm.llpm);
llvm.LLVMAddCFGSimplificationPass(pm.llpm);
llvm.LLVMAddStripDeadPrototypesPass(pm.llpm);
llvm.LLVMAddDeadTypeEliminationPass(pm.llpm);
llvm.LLVMAddConstantMergePass(pm.llpm);
}
if (opts.verify) {
llvm.LLVMAddVerifierPass(pm.llpm);
}
// TODO: Write .s if -c was specified and -save-temps was on.
if (is_object_or_assembly(opts.output_type)) {
let int LLVMAssemblyFile = 0;
let int LLVMObjectFile = 1;
let int LLVMNullFile = 2;
auto FileType;
if (opts.output_type == output_type_object) {
FileType = LLVMObjectFile;
} else {
FileType = LLVMAssemblyFile;
}
// Write optimized bitcode if --save-temps was on.
if (opts.save_temps) {
alt (opts.output_type) {
case (output_type_bitcode) { /* nothing to do */ }
case (_) {
auto filename = mk_intermediate_name(output,
"opt.bc");
llvm.LLVMRunPassManager(pm.llpm, llmod);
llvm.LLVMWriteBitcodeToFile(llmod,
_str.buf(filename));
pm = mk_pass_manager();
}
}
}
llvm.LLVMRustWriteOutputFile(pm.llpm, llmod,
_str.buf(x86.get_target_triple()),
_str.buf(output),
FileType);
llvm.LLVMDisposeModule(llmod);
ret;
}
llvm.LLVMRunPassManager(pm.llpm, llmod);
llvm.LLVMWriteBitcodeToFile(llmod, _str.buf(output));
llvm.LLVMDisposeModule(llmod);
}
}