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3 changes: 3 additions & 0 deletions include/swift/Basic/SourceManager.h
Original file line number Diff line number Diff line change
Expand Up @@ -243,6 +243,9 @@ class SourceManager {
llvm::Optional<unsigned> resolveOffsetForEndOfLine(unsigned BufferId,
unsigned Line) const;

/// Get the length of the line
llvm::Optional<unsigned> getLineLength(unsigned BufferId, unsigned Line) const;

SourceLoc getLocForLineCol(unsigned BufferId, unsigned Line, unsigned Col) const {
auto Offset = resolveFromLineCol(BufferId, Line, Col);
return Offset.hasValue() ? getLocForOffset(BufferId, Offset.getValue()) :
Expand Down
15 changes: 14 additions & 1 deletion lib/Basic/SourceLoc.cpp
Original file line number Diff line number Diff line change
Expand Up @@ -331,10 +331,20 @@ SourceManager::resolveOffsetForEndOfLine(unsigned BufferId,
return resolveFromLineCol(BufferId, Line, ~0u);
}

llvm::Optional<unsigned>
SourceManager::getLineLength(unsigned BufferId, unsigned Line) const {
auto BegOffset = resolveFromLineCol(BufferId, Line, 0);
auto EndOffset = resolveFromLineCol(BufferId, Line, ~0u);
if (BegOffset && EndOffset) {
return EndOffset.getValue() - BegOffset.getValue();
}
return None;
}

llvm::Optional<unsigned> SourceManager::resolveFromLineCol(unsigned BufferId,
unsigned Line,
unsigned Col) const {
if (Line == 0 || Col == 0) {
if (Line == 0) {
return None;
}
const bool LineEnd = Col == ~0u;
Expand All @@ -353,6 +363,9 @@ llvm::Optional<unsigned> SourceManager::resolveFromLineCol(unsigned BufferId,
return None;
}
Ptr = LineStart;
if (Col == 0) {
return Ptr - InputBuf->getBufferStart();
}
// The <= here is to allow for non-inclusive range end positions at EOF
for (; ; ++Ptr) {
--Col;
Expand Down
19 changes: 19 additions & 0 deletions lib/SIL/SILPrinter.cpp
Original file line number Diff line number Diff line change
Expand Up @@ -64,6 +64,10 @@ llvm::cl::opt<bool>
SILPrintDebugInfo("sil-print-debuginfo", llvm::cl::init(false),
llvm::cl::desc("Include debug info in SIL output"));

llvm::cl::opt<bool>
SILPrintSourceInfo("sil-print-sourceinfo", llvm::cl::init(false),
llvm::cl::desc("Include source annotation in SIL output"));

llvm::cl::opt<bool> SILPrintGenericSpecializationInfo(
"sil-print-generic-specialization-info", llvm::cl::init(false),
llvm::cl::desc("Include generic specialization"
Expand Down Expand Up @@ -618,7 +622,22 @@ class SILPrinter : public SILInstructionVisitor<SILPrinter> {
}
*this << '\n';

const auto &SM = BB->getModule().getASTContext().SourceMgr;
Optional<SILLocation> PrevLoc;
for (const SILInstruction &I : *BB) {
if (SILPrintSourceInfo) {
auto CurSourceLoc = I.getLoc().getSourceLoc();
if (CurSourceLoc.isValid()) {
if (!PrevLoc || SM.getLineNumber(CurSourceLoc) > SM.getLineNumber(PrevLoc->getSourceLoc())) {
auto Buffer = SM.findBufferContainingLoc(CurSourceLoc);
auto Line = SM.getLineNumber(CurSourceLoc);
auto LineLength = SM.getLineLength(Buffer, Line);
PrintState.OS << " // " << SM.extractText({SM.getLocForLineCol(Buffer, Line, 0), LineLength.getValueOr(0)}) <<
"\tSourceLoc: " << SM.getDisplayNameForLoc(CurSourceLoc) << ":" << Line << "\n";
PrevLoc = I.getLoc();
}
}
}
Ctx.printInstructionCallBack(&I);
if (SILPrintGenericSpecializationInfo) {
if (auto AI = ApplySite::isa(const_cast<SILInstruction *>(&I)))
Expand Down