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Make LLVM Assembly dramatically easier to read by aligning the comments,

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using formatted_raw_ostream's PadToColumn.

Before:

bb1:            ; preds = %bb
  %2 = sext i32 %i.01 to i64            ; <i64> [#uses=1]
  %3 = getelementptr double* %p, i64 %2         ; <double*> [#uses=1]
  %4 = load double* %3, align 8         ; <double> [#uses=1]
  %5 = fmul double %4, 1.100000e+00             ; <double> [#uses=1]
  %6 = sext i32 %i.01 to i64            ; <i64> [#uses=1]
  %7 = getelementptr double* %p, i64 %6         ; <double*> [#uses=1]

After:

bb1:                                        ; preds = %bb
  %2 = sext i32 %i.01 to i64                ; <i64> [#uses=1]
  %3 = getelementptr double* %p, i64 %2     ; <double*> [#uses=1]
  %4 = load double* %3, align 8             ; <double> [#uses=1]
  %5 = fmul double %4, 1.100000e+00         ; <double> [#uses=1]
  %6 = sext i32 %i.01 to i64                ; <i64> [#uses=1]
  %7 = getelementptr double* %p, i64 %6     ; <double*> [#uses=1]

Several tests required whitespace adjustments.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78816 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2009-08-12 17:23:50 +00:00
parent 9f7d60f460
commit 683e922d29
10 changed files with 169 additions and 157 deletions
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60
lib/VMCore/AsmWriter.cpp
View File

@ -34,7 +34,7 @@
#include "llvm/Support/CFG.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Support/FormattedStream.h"
#include <algorithm>
#include <cctype>
#include <map>
@ -66,7 +66,8 @@ static const Module *getModuleFromVal(const Value *V) {
// PrintEscapedString - Print each character of the specified string, escaping
// it if it is not printable or if it is an escape char.
static void PrintEscapedString(const StringRef &Name, raw_ostream &Out) {
static void PrintEscapedString(const StringRef &Name,
formatted_raw_ostream &Out) {
for (unsigned i = 0, e = Name.size(); i != e; ++i) {
unsigned char C = Name[i];
if (isprint(C) && C != '\\' && C != '"')
@ -86,7 +87,7 @@ enum PrefixType {
/// PrintLLVMName - Turn the specified name into an 'LLVM name', which is either
/// prefixed with % (if the string only contains simple characters) or is
/// surrounded with ""'s (if it has special chars in it). Print it out.
static void PrintLLVMName(raw_ostream &OS, const StringRef &Name,
static void PrintLLVMName(formatted_raw_ostream &OS, const StringRef &Name,
PrefixType Prefix) {
assert(Name.data() && "Cannot get empty name!");
switch (Prefix) {
@ -125,7 +126,7 @@ static void PrintLLVMName(raw_ostream &OS, const StringRef &Name,
/// PrintLLVMName - Turn the specified name into an 'LLVM name', which is either
/// prefixed with % (if the string only contains simple characters) or is
/// surrounded with ""'s (if it has special chars in it). Print it out.
static void PrintLLVMName(raw_ostream &OS, const Value *V) {
static void PrintLLVMName(formatted_raw_ostream &OS, const Value *V) {
PrintLLVMName(OS, V->getName(),
isa<GlobalValue>(V) ? GlobalPrefix : LocalPrefix);
}
@ -425,9 +426,11 @@ static void AddModuleTypesToPrinter(TypePrinting &TP,
// Get the name as a string and insert it into TypeNames.
std::string NameStr;
raw_string_ostream NameOS(NameStr);
raw_string_ostream NameROS(NameStr);
formatted_raw_ostream NameOS(NameROS);
PrintLLVMName(NameOS, TI->first, LocalPrefix);
TP.addTypeName(Ty, NameOS.str());
NameOS.flush();
TP.addTypeName(Ty, NameStr);
}
// Walk the entire module to find references to unnamed structure and opaque
@ -814,7 +817,7 @@ void SlotTracker::CreateMetadataSlot(const MDNode *N) {
// AsmWriter Implementation
//===----------------------------------------------------------------------===//
static void WriteAsOperandInternal(raw_ostream &Out, const Value *V,
static void WriteAsOperandInternal(formatted_raw_ostream &Out, const Value *V,
TypePrinting &TypePrinter,
SlotTracker *Machine);
@ -853,7 +856,7 @@ static const char *getPredicateText(unsigned predicate) {
return pred;
}
static void WriteMDNodes(raw_ostream &Out, TypePrinting &TypePrinter,
static void WriteMDNodes(formatted_raw_ostream &Out, TypePrinting &TypePrinter,
SlotTracker &Machine) {
SmallVector<const MDNode *, 16> Nodes;
Nodes.resize(Machine.mdnSize());
@ -886,7 +889,7 @@ static void WriteMDNodes(raw_ostream &Out, TypePrinting &TypePrinter,
}
}
static void WriteOptimizationInfo(raw_ostream &Out, const User *U) {
static void WriteOptimizationInfo(formatted_raw_ostream &Out, const User *U) {
if (const OverflowingBinaryOperator *OBO =
dyn_cast<OverflowingBinaryOperator>(U)) {
if (OBO->hasNoUnsignedOverflow())
@ -902,7 +905,7 @@ static void WriteOptimizationInfo(raw_ostream &Out, const User *U) {
}
}
static void WriteConstantInt(raw_ostream &Out, const Constant *CV,
static void WriteConstantInt(formatted_raw_ostream &Out, const Constant *CV,
TypePrinting &TypePrinter, SlotTracker *Machine) {
if (const ConstantInt *CI = dyn_cast<ConstantInt>(CV)) {
if (CI->getType() == Type::Int1Ty) {
@ -1143,7 +1146,7 @@ static void WriteConstantInt(raw_ostream &Out, const Constant *CV,
/// ostream. This can be useful when you just want to print int %reg126, not
/// the whole instruction that generated it.
///
static void WriteAsOperandInternal(raw_ostream &Out, const Value *V,
static void WriteAsOperandInternal(formatted_raw_ostream &Out, const Value *V,
TypePrinting &TypePrinter,
SlotTracker *Machine) {
if (V->hasName()) {
@ -1233,14 +1236,15 @@ void llvm::WriteAsOperand(raw_ostream &Out, const Value *V, bool PrintType,
Out << ' ';
}
WriteAsOperandInternal(Out, V, TypePrinter, 0);
formatted_raw_ostream FOut(Out);
WriteAsOperandInternal(FOut, V, TypePrinter, 0);
}
namespace {
class AssemblyWriter {
raw_ostream &Out;
formatted_raw_ostream &Out;
SlotTracker &Machine;
const Module *TheModule;
TypePrinting TypePrinter;
@ -1251,7 +1255,8 @@ class AssemblyWriter {
std::map<const MDNode *, unsigned> MDNodes;
unsigned MetadataIDNo;
public:
inline AssemblyWriter(raw_ostream &o, SlotTracker &Mac, const Module *M,
inline AssemblyWriter(formatted_raw_ostream &o, SlotTracker &Mac,
const Module *M,
AssemblyAnnotationWriter *AAW)
: Out(o), Machine(Mac), TheModule(M), AnnotationWriter(AAW), MetadataIDNo(0) {
AddModuleTypesToPrinter(TypePrinter, NumberedTypes, M);
@ -1403,7 +1408,8 @@ void AssemblyWriter::printModule(const Module *M) {
WriteMDNodes(Out, TypePrinter, Machine);
}
static void PrintLinkage(GlobalValue::LinkageTypes LT, raw_ostream &Out) {
static void PrintLinkage(GlobalValue::LinkageTypes LT,
formatted_raw_ostream &Out) {
switch (LT) {
case GlobalValue::ExternalLinkage: break;
case GlobalValue::PrivateLinkage: Out << "private "; break;
@ -1428,7 +1434,7 @@ static void PrintLinkage(GlobalValue::LinkageTypes LT, raw_ostream &Out) {
static void PrintVisibility(GlobalValue::VisibilityTypes Vis,
raw_ostream &Out) {
formatted_raw_ostream &Out) {
switch (Vis) {
default: llvm_unreachable("Invalid visibility style!");
case GlobalValue::DefaultVisibility: break;
@ -1519,7 +1525,8 @@ void AssemblyWriter::printTypeSymbolTable(const TypeSymbolTable &ST) {
// Make sure we print out at least one level of the type structure, so
// that we do not get %2 = type %2
TypePrinter.printAtLeastOneLevel(NumberedTypes[i], Out);
Out << "\t\t; type %" << i << '\n';
Out.PadToColumn(50);
Out << "; type %" << i << '\n';
}
// Print the named types.
@ -1668,11 +1675,13 @@ void AssemblyWriter::printBasicBlock(const BasicBlock *BB) {
Out << "<badref>";
}
if (BB->getParent() == 0)
Out << "\t\t; Error: Block without parent!";
else if (BB != &BB->getParent()->getEntryBlock()) { // Not the entry block?
if (BB->getParent() == 0) {
Out.PadToColumn(50);
Out << "; Error: Block without parent!";
} else if (BB != &BB->getParent()->getEntryBlock()) { // Not the entry block?
// Output predecessors for the block...
Out << "\t\t;";
Out.PadToColumn(50);
Out << ";";
pred_const_iterator PI = pred_begin(BB), PE = pred_end(BB);
if (PI == PE) {
@ -1706,7 +1715,8 @@ void AssemblyWriter::printBasicBlock(const BasicBlock *BB) {
///
void AssemblyWriter::printInfoComment(const Value &V) {
if (V.getType() != Type::VoidTy) {
Out << "\t\t; <";
Out.PadToColumn(50);
Out << "; <";
TypePrinter.print(V.getType(), Out);
Out << '>';
@ -1991,8 +2001,9 @@ void Module::print(std::ostream &o, AssemblyAnnotationWriter *AAW) const {
raw_os_ostream OS(o);
print(OS, AAW);
}
void Module::print(raw_ostream &OS, AssemblyAnnotationWriter *AAW) const {
void Module::print(raw_ostream &ROS, AssemblyAnnotationWriter *AAW) const {
SlotTracker SlotTable(this);
formatted_raw_ostream OS(ROS);
AssemblyWriter W(OS, SlotTable, this, AAW);
W.write(this);
}
@ -2010,7 +2021,8 @@ void Type::print(raw_ostream &OS) const {
TypePrinting().print(this, OS);
}
void Value::print(raw_ostream &OS, AssemblyAnnotationWriter *AAW) const {
void Value::print(raw_ostream &ROS, AssemblyAnnotationWriter *AAW) const {
formatted_raw_ostream OS(ROS);
if (this == 0) {
OS << "printing a <null> value\n";
return;