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54 lines
1.8 KiB
C++
54 lines
1.8 KiB
C++
//===-- gen/coverage.h - Code Coverage Analysis -----------------*- C++ -*-===//
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//
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// LDC – the LLVM D compiler
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//
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// This file is distributed under the BSD-style LDC license. See the LICENSE
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// file for details.
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//
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//===----------------------------------------------------------------------===//
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#include "gen/coverage.h"
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#include "mars.h"
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#include "module.h"
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#include "gen/irstate.h"
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#include "gen/logger.h"
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void emitCoverageLinecountInc(Loc &loc) {
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// Only emit coverage increment for locations in the source of the current module
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// (for example, 'inlined' methods from other source files should be skipped).
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if (!global.params.cov || !loc.linnum || !loc.filename ||
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strcmp(gIR->dmodule->srcfile->name->toChars(), loc.filename) != 0) {
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return;
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}
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const unsigned line = loc.linnum - 1; // convert to 0-based line# index
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assert(line < gIR->dmodule->numlines);
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IF_LOG Logger::println("Coverage: increment _d_cover_data[%d]", line);
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LOG_SCOPE;
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// Get GEP into _d_cover_data array
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LLConstant* idxs[] = { DtoConstUint(0), DtoConstUint(line) };
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LLValue* ptr = llvm::ConstantExpr::getGetElementPtr(
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#if LDC_LLVM_VER >= 307
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LLArrayType::get(LLType::getInt32Ty(gIR->context()), gIR->dmodule->numlines),
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#endif
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gIR->dmodule->d_cover_data, idxs, true);
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// Do an atomic increment, so this works when multiple threads are executed.
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gIR->ir->CreateAtomicRMW(
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llvm::AtomicRMWInst::Add,
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ptr,
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DtoConstUint(1),
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llvm::Monotonic
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);
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unsigned num_sizet_bits = gDataLayout->getTypeSizeInBits(DtoSize_t());
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unsigned idx = line / num_sizet_bits;
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unsigned bitidx = line % num_sizet_bits;
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IF_LOG Logger::println("_d_cover_valid[%d] |= (1 << %d)", idx, bitidx);
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gIR->dmodule->d_cover_valid_init[idx] |= (size_t(1) << bitidx);
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}
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