[llvm-commits] CVS: llvm/lib/Bitcode/Writer/Writer.cpp
Changes in directory llvm/lib/Bitcode/Writer:
Writer.cpp updated: 1.10 - 1.11
---
Log message:
improve a comment
---
Diffs of the changes: (+5 -3)
Writer.cpp |8 +---
1 files changed, 5 insertions(+), 3 deletions(-)
Index: llvm/lib/Bitcode/Writer/Writer.cpp
diff -u llvm/lib/Bitcode/Writer/Writer.cpp:1.10
llvm/lib/Bitcode/Writer/Writer.cpp:1.11
--- llvm/lib/Bitcode/Writer/Writer.cpp:1.10 Wed Apr 25 22:27:58 2007
+++ llvm/lib/Bitcode/Writer/Writer.cpp Wed Apr 25 22:32:43 2007
@@ -572,8 +572,9 @@
// Emit constants.
WriteModuleConstants(VE, Stream);
- // FIXME: Purge aggregate values from the VE, emit a record that indicates
how
- // many to purge.
+ // If we have any aggregate values in the value table, purge them - these can
+ // only be used to initialize global variables. Doing so makes the value
+ // namespace smaller for code in functions.
int NumNonAggregates = VE.PurgeAggregateValues();
if (NumNonAggregates != -1) {
SmallVectorunsigned, 1 Vals;
@@ -583,7 +584,8 @@
// Emit function bodies.
for (Module::const_iterator I = M-begin(), E = M-end(); I != E; ++I)
-WriteFunction(*I, VE, Stream);
+if (!I-isDeclaration())
+ WriteFunction(*I, VE, Stream);
// Emit the type symbol table information.
WriteTypeSymbolTable(M-getTypeSymbolTable(), VE, Stream);
___
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[llvm-commits] CVS: llvm/lib/Bitcode/Writer/Writer.cpp
Changes in directory llvm/lib/Bitcode/Writer:
Writer.cpp updated: 1.7 - 1.8
---
Log message:
implement reading and writing of constant exprs.
---
Diffs of the changes: (+97 -9)
Writer.cpp | 106 +++--
1 files changed, 97 insertions(+), 9 deletions(-)
Index: llvm/lib/Bitcode/Writer/Writer.cpp
diff -u llvm/lib/Bitcode/Writer/Writer.cpp:1.7
llvm/lib/Bitcode/Writer/Writer.cpp:1.8
--- llvm/lib/Bitcode/Writer/Writer.cpp:1.7 Mon Apr 23 22:29:47 2007
+++ llvm/lib/Bitcode/Writer/Writer.cpp Tue Apr 24 02:07:11 2007
@@ -25,6 +25,47 @@
static const unsigned CurVersion = 0;
+static unsigned GetEncodedCastOpcode(unsigned Opcode) {
+ switch (Opcode) {
+ default: assert(0 Unknown cast instruction!);
+ case Instruction::Trunc : return bitc::CAST_TRUNC;
+ case Instruction::ZExt: return bitc::CAST_ZEXT;
+ case Instruction::SExt: return bitc::CAST_SEXT;
+ case Instruction::FPToUI : return bitc::CAST_FPTOUI;
+ case Instruction::FPToSI : return bitc::CAST_FPTOSI;
+ case Instruction::UIToFP : return bitc::CAST_UITOFP;
+ case Instruction::SIToFP : return bitc::CAST_SITOFP;
+ case Instruction::FPTrunc : return bitc::CAST_FPTRUNC;
+ case Instruction::FPExt : return bitc::CAST_FPEXT;
+ case Instruction::PtrToInt: return bitc::CAST_PTRTOINT;
+ case Instruction::IntToPtr: return bitc::CAST_INTTOPTR;
+ case Instruction::BitCast : return bitc::CAST_BITCAST;
+ }
+}
+
+static unsigned GetEncodedBinaryOpcode(unsigned Opcode) {
+ switch (Opcode) {
+ default: assert(0 Unknown binary instruction!);
+ case Instruction::Add: return bitc::BINOP_ADD;
+ case Instruction::Sub: return bitc::BINOP_SUB;
+ case Instruction::Mul: return bitc::BINOP_MUL;
+ case Instruction::UDiv: return bitc::BINOP_UDIV;
+ case Instruction::FDiv:
+ case Instruction::SDiv: return bitc::BINOP_SDIV;
+ case Instruction::URem: return bitc::BINOP_UREM;
+ case Instruction::FRem:
+ case Instruction::SRem: return bitc::BINOP_SREM;
+ case Instruction::Shl: return bitc::BINOP_SHL;
+ case Instruction::LShr: return bitc::BINOP_LSHR;
+ case Instruction::AShr: return bitc::BINOP_ASHR;
+ case Instruction::And: return bitc::BINOP_AND;
+ case Instruction::Or: return bitc::BINOP_OR;
+ case Instruction::Xor: return bitc::BINOP_XOR;
+ }
+}
+
+
+
static void WriteStringRecord(unsigned Code, const std::string Str,
unsigned AbbrevToUse, BitstreamWriter Stream) {
SmallVectorunsigned, 64 Vals;
@@ -408,15 +449,62 @@
for (unsigned i = 0, e = C-getNumOperands(); i != e; ++i)
Record.push_back(VE.getValueID(C-getOperand(i)));
} else if (const ConstantExpr *CE = dyn_castConstantExpr(C)) {
- Code = bitc::CST_CODE_CONSTEXPR;
- // FIXME: optimize for binops, compares, etc.
- Record.push_back(CE-getOpcode());
- Record.push_back(CE-getNumOperands());
- for (unsigned i = 0, e = CE-getNumOperands(); i != e; ++i)
-Record.push_back(VE.getValueID(C-getOperand(i)));
- // Compares also pass their predicate.
- if (CE-isCompare())
-Record.push_back((unsigned)CE-getPredicate());
+ switch (CE-getOpcode()) {
+ default:
+if (Instruction::isCast(CE-getOpcode())) {
+ Code = bitc::CST_CODE_CE_CAST;
+ Record.push_back(GetEncodedCastOpcode(CE-getOpcode()));
+ Record.push_back(VE.getTypeID(C-getOperand(0)-getType()));
+ Record.push_back(VE.getValueID(C-getOperand(0)));
+} else {
+ assert(CE-getNumOperands() == 2 Unknown constant expr!);
+ Code = bitc::CST_CODE_CE_BINOP;
+ Record.push_back(GetEncodedBinaryOpcode(CE-getOpcode()));
+ Record.push_back(VE.getValueID(C-getOperand(0)));
+ Record.push_back(VE.getValueID(C-getOperand(1)));
+}
+break;
+ case Instruction::GetElementPtr:
+Code = bitc::CST_CODE_CE_GEP;
+Record.push_back(CE-getNumOperands());
+for (unsigned i = 0, e = CE-getNumOperands(); i != e; ++i) {
+ Record.push_back(VE.getTypeID(C-getOperand(i)-getType()));
+ Record.push_back(VE.getValueID(C-getOperand(i)));
+}
+break;
+ case Instruction::Select:
+Code = bitc::CST_CODE_CE_SELECT;
+Record.push_back(VE.getValueID(C-getOperand(0)));
+Record.push_back(VE.getValueID(C-getOperand(1)));
+Record.push_back(VE.getValueID(C-getOperand(2)));
+break;
+ case Instruction::ExtractElement:
+Code = bitc::CST_CODE_CE_EXTRACTELT;
+Record.push_back(VE.getTypeID(C-getOperand(0)-getType()));
+Record.push_back(VE.getValueID(C-getOperand(0)));
+Record.push_back(VE.getValueID(C-getOperand(1)));
+break;
+ case Instruction::InsertElement:
+Code = bitc::CST_CODE_CE_INSERTELT;
+Record.push_back(VE.getValueID(C-getOperand(0)));
+Record.push_back(VE.getValueID(C-getOperand(1)));
+
[llvm-commits] CVS: llvm/lib/Bitcode/Writer/Writer.cpp
Changes in directory llvm/lib/Bitcode/Writer:
Writer.cpp updated: 1.2 - 1.3
---
Log message:
first part of implementation of abbrevs. The writer isn't fully there yet and
the
reader doesn't handle them at all yet.
---
Diffs of the changes: (+39 -6)
Writer.cpp | 45 +++--
1 files changed, 39 insertions(+), 6 deletions(-)
Index: llvm/lib/Bitcode/Writer/Writer.cpp
diff -u llvm/lib/Bitcode/Writer/Writer.cpp:1.2
llvm/lib/Bitcode/Writer/Writer.cpp:1.3
--- llvm/lib/Bitcode/Writer/Writer.cpp:1.2 Sun Apr 22 20:01:37 2007
+++ llvm/lib/Bitcode/Writer/Writer.cpp Mon Apr 23 11:04:05 2007
@@ -200,10 +200,14 @@
WriteStringRecord(bitc::MODULE_CODE_ASM, M-getModuleInlineAsm(),
0/*TODO*/, Stream);
- // Emit information about sections.
+ // Emit information about sections, computing how many there are. Also
+ // compute the maximum alignment value.
std::mapstd::string, unsigned SectionMap;
+ unsigned MaxAlignment = 0;
for (Module::const_global_iterator GV = M-global_begin(),E =
M-global_end();
GV != E; ++GV) {
+MaxAlignment = std::max(MaxAlignment, GV-getAlignment());
+
if (!GV-hasSection()) continue;
// Give section names unique ID's.
unsigned Entry = SectionMap[GV-getSection()];
@@ -213,6 +217,7 @@
Entry = SectionMap.size();
}
for (Module::const_iterator F = M-begin(), E = M-end(); F != E; ++F) {
+MaxAlignment = std::max(MaxAlignment, F-getAlignment());
if (!F-hasSection()) continue;
// Give section names unique ID's.
unsigned Entry = SectionMap[F-getSection()];
@@ -222,13 +227,37 @@
Entry = SectionMap.size();
}
- // TODO: Emit abbrev, now that we know # sections.
+ // Emit abbrev for globals, now that we know # sections and max alignment.
+ unsigned SimpleGVarAbbrev = 0;
+ if (!M-global_empty() 0) {
+// Add an abbrev for common globals with no visibility or thread localness.
+BitCodeAbbrev *Abbv = new BitCodeAbbrev();
+Abbv-Add(BitCodeAbbrevOp(bitc::MODULE_CODE_GLOBALVAR));
+Abbv-Add(BitCodeAbbrevOp(BitCodeAbbrevOp::FixedWidth, 1)); // Constant.
+Abbv-Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6));// Initializer.
+Abbv-Add(BitCodeAbbrevOp(BitCodeAbbrevOp::FixedWidth, 3)); // Linkage.
+if (MaxAlignment == 0) // Alignment.
+ Abbv-Add(BitCodeAbbrevOp(0));
+else {
+ unsigned MaxEncAlignment = Log2_32(MaxAlignment)+1;
+ Abbv-Add(BitCodeAbbrevOp(BitCodeAbbrevOp::FixedWidth,
+ Log2_32_Ceil(MaxEncAlignment)));
+}
+if (SectionMap.empty())// Section.
+ Abbv-Add(BitCodeAbbrevOp(0));
+else
+ Abbv-Add(BitCodeAbbrevOp(BitCodeAbbrevOp::FixedWidth,
+ Log2_32_Ceil(SectionMap.size(;
+// Don't bother emitting vis + thread local.
+SimpleGVarAbbrev = Stream.EmitAbbrev(Abbv);
+ }
// Emit the global variable information.
SmallVectorunsigned, 64 Vals;
for (Module::const_global_iterator GV = M-global_begin(),E =
M-global_end();
GV != E; ++GV) {
-
+unsigned AbbrevToUse = 0;
+
// GLOBALVAR: [type, isconst, initid,
// linkage, alignment, section, visibility, threadlocal]
Vals.push_back(VE.getTypeID(GV-getType()));
@@ -238,10 +267,14 @@
Vals.push_back(getEncodedLinkage(GV));
Vals.push_back(Log2_32(GV-getAlignment())+1);
Vals.push_back(GV-hasSection() ? SectionMap[GV-getSection()] : 0);
-Vals.push_back(getEncodedVisibility(GV));
-Vals.push_back(GV-isThreadLocal());
+if (GV-isThreadLocal() ||
+GV-getVisibility() != GlobalValue::DefaultVisibility) {
+ Vals.push_back(getEncodedVisibility(GV));
+ Vals.push_back(GV-isThreadLocal());
+} else {
+ AbbrevToUse = SimpleGVarAbbrev;
+}
-unsigned AbbrevToUse = 0;
Stream.EmitRecord(bitc::MODULE_CODE_GLOBALVAR, Vals, AbbrevToUse);
Vals.clear();
}
___
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[llvm-commits] CVS: llvm/lib/Bitcode/Writer/Writer.cpp
Changes in directory llvm/lib/Bitcode/Writer:
Writer.cpp updated: 1.3 - 1.4
---
Log message:
implement reading of abbrevs, and writing of abbreviated global varrs.
---
Diffs of the changes: (+7 -3)
Writer.cpp | 10 +++---
1 files changed, 7 insertions(+), 3 deletions(-)
Index: llvm/lib/Bitcode/Writer/Writer.cpp
diff -u llvm/lib/Bitcode/Writer/Writer.cpp:1.3
llvm/lib/Bitcode/Writer/Writer.cpp:1.4
--- llvm/lib/Bitcode/Writer/Writer.cpp:1.3 Mon Apr 23 11:04:05 2007
+++ llvm/lib/Bitcode/Writer/Writer.cpp Mon Apr 23 13:58:34 2007
@@ -204,9 +204,11 @@
// compute the maximum alignment value.
std::mapstd::string, unsigned SectionMap;
unsigned MaxAlignment = 0;
+ unsigned MaxGlobalType = 0;
for (Module::const_global_iterator GV = M-global_begin(),E =
M-global_end();
GV != E; ++GV) {
MaxAlignment = std::max(MaxAlignment, GV-getAlignment());
+MaxGlobalType = std::max(MaxGlobalType, VE.getTypeID(GV-getType()));
if (!GV-hasSection()) continue;
// Give section names unique ID's.
@@ -229,10 +231,12 @@
// Emit abbrev for globals, now that we know # sections and max alignment.
unsigned SimpleGVarAbbrev = 0;
- if (!M-global_empty() 0) {
+ if (!M-global_empty()) {
// Add an abbrev for common globals with no visibility or thread localness.
BitCodeAbbrev *Abbv = new BitCodeAbbrev();
Abbv-Add(BitCodeAbbrevOp(bitc::MODULE_CODE_GLOBALVAR));
+Abbv-Add(BitCodeAbbrevOp(BitCodeAbbrevOp::FixedWidth,
+ Log2_32_Ceil(MaxGlobalType+1)));
Abbv-Add(BitCodeAbbrevOp(BitCodeAbbrevOp::FixedWidth, 1)); // Constant.
Abbv-Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6));// Initializer.
Abbv-Add(BitCodeAbbrevOp(BitCodeAbbrevOp::FixedWidth, 3)); // Linkage.
@@ -241,7 +245,7 @@
else {
unsigned MaxEncAlignment = Log2_32(MaxAlignment)+1;
Abbv-Add(BitCodeAbbrevOp(BitCodeAbbrevOp::FixedWidth,
- Log2_32_Ceil(MaxEncAlignment)));
+ Log2_32_Ceil(MaxEncAlignment+1)));
}
if (SectionMap.empty())// Section.
Abbv-Add(BitCodeAbbrevOp(0));
@@ -300,7 +304,7 @@
/// WriteModule - Emit the specified module to the bitstream.
static void WriteModule(const Module *M, BitstreamWriter Stream) {
- Stream.EnterSubblock(bitc::MODULE_BLOCK_ID, 2);
+ Stream.EnterSubblock(bitc::MODULE_BLOCK_ID, 3);
// Emit the version number if it is non-zero.
if (CurVersion) {
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[llvm-commits] CVS: llvm/lib/Bitcode/Writer/Writer.cpp
Changes in directory llvm/lib/Bitcode/Writer:
Writer.cpp updated: 1.4 - 1.5
---
Log message:
write out the symtab for globals.
---
Diffs of the changes: (+70 -33)
Writer.cpp | 103 +
1 files changed, 70 insertions(+), 33 deletions(-)
Index: llvm/lib/Bitcode/Writer/Writer.cpp
diff -u llvm/lib/Bitcode/Writer/Writer.cpp:1.4
llvm/lib/Bitcode/Writer/Writer.cpp:1.5
--- llvm/lib/Bitcode/Writer/Writer.cpp:1.4 Mon Apr 23 13:58:34 2007
+++ llvm/lib/Bitcode/Writer/Writer.cpp Mon Apr 23 15:35:01 2007
@@ -18,6 +18,7 @@
#include llvm/DerivedTypes.h
#include llvm/Module.h
#include llvm/TypeSymbolTable.h
+#include llvm/ValueSymbolTable.h
#include llvm/Support/MathExtras.h
using namespace llvm;
@@ -126,39 +127,6 @@
Stream.ExitBlock();
}
-/// WriteTypeSymbolTable - Emit a block for the specified type symtab.
-static void WriteTypeSymbolTable(const TypeSymbolTable TST,
- const ValueEnumerator VE,
- BitstreamWriter Stream) {
- if (TST.empty()) return;
-
- Stream.EnterSubblock(bitc::TYPE_SYMTAB_BLOCK_ID, 3);
-
- // FIXME: Set up the abbrev, we know how many types there are!
- // FIXME: We know if the type names can use 7-bit ascii.
-
- SmallVectorunsigned, 64 NameVals;
-
- for (TypeSymbolTable::const_iterator TI = TST.begin(), TE = TST.end();
- TI != TE; ++TI) {
-unsigned AbbrevToUse = 0;
-
-// TST_ENTRY: [typeid, namelen, namechar x N]
-NameVals.push_back(VE.getTypeID(TI-second));
-
-const std::string Str = TI-first;
-NameVals.push_back(Str.size());
-for (unsigned i = 0, e = Str.size(); i != e; ++i)
- NameVals.push_back(Str[i]);
-
-// Emit the finished record.
-Stream.EmitRecord(bitc::TST_ENTRY_CODE, NameVals, AbbrevToUse);
-NameVals.clear();
- }
-
- Stream.ExitBlock();
-}
-
static unsigned getEncodedLinkage(const GlobalValue *GV) {
switch (GV-getLinkage()) {
default: assert(0 Invalid linkage!);
@@ -302,6 +270,71 @@
}
+/// WriteTypeSymbolTable - Emit a block for the specified type symtab.
+static void WriteTypeSymbolTable(const TypeSymbolTable TST,
+ const ValueEnumerator VE,
+ BitstreamWriter Stream) {
+ if (TST.empty()) return;
+
+ Stream.EnterSubblock(bitc::TYPE_SYMTAB_BLOCK_ID, 3);
+
+ // FIXME: Set up the abbrev, we know how many types there are!
+ // FIXME: We know if the type names can use 7-bit ascii.
+
+ SmallVectorunsigned, 64 NameVals;
+
+ for (TypeSymbolTable::const_iterator TI = TST.begin(), TE = TST.end();
+ TI != TE; ++TI) {
+unsigned AbbrevToUse = 0;
+
+// TST_ENTRY: [typeid, namelen, namechar x N]
+NameVals.push_back(VE.getTypeID(TI-second));
+
+const std::string Str = TI-first;
+NameVals.push_back(Str.size());
+for (unsigned i = 0, e = Str.size(); i != e; ++i)
+ NameVals.push_back(Str[i]);
+
+// Emit the finished record.
+Stream.EmitRecord(bitc::TST_ENTRY_CODE, NameVals, AbbrevToUse);
+NameVals.clear();
+ }
+
+ Stream.ExitBlock();
+}
+
+// Emit names for globals/functions etc.
+static void WriteValueSymbolTable(const ValueSymbolTable VST,
+ const ValueEnumerator VE,
+ BitstreamWriter Stream) {
+ if (VST.empty()) return;
+ Stream.EnterSubblock(bitc::VALUE_SYMTAB_BLOCK_ID, 3);
+
+ // FIXME: Set up the abbrev, we know how many values there are!
+ // FIXME: We know if the type names can use 7-bit ascii.
+ SmallVectorunsigned, 64 NameVals;
+
+ for (ValueSymbolTable::const_iterator SI = VST.begin(), SE = VST.end();
+ SI != SE; ++SI) {
+unsigned AbbrevToUse = 0;
+
+// VST_ENTRY: [valueid, namelen, namechar x N]
+NameVals.push_back(VE.getValueID(SI-getValue()));
+
+NameVals.push_back(SI-getKeyLength());
+for (const char *P = SI-getKeyData(),
+ *E = SI-getKeyData()+SI-getKeyLength(); P != E; ++P)
+ NameVals.push_back((unsigned char)*P);
+
+// Emit the finished record.
+Stream.EmitRecord(bitc::VST_ENTRY_CODE, NameVals, AbbrevToUse);
+NameVals.clear();
+ }
+ Stream.ExitBlock();
+}
+
+
+
/// WriteModule - Emit the specified module to the bitstream.
static void WriteModule(const Module *M, BitstreamWriter Stream) {
Stream.EnterSubblock(bitc::MODULE_BLOCK_ID, 3);
@@ -327,6 +360,10 @@
// Emit the type symbol table information.
WriteTypeSymbolTable(M-getTypeSymbolTable(), VE, Stream);
+
+ // Emit names for globals/functions etc.
+ WriteValueSymbolTable(M-getValueSymbolTable(), VE, Stream);
+
Stream.ExitBlock();
}
___
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[llvm-commits] CVS: llvm/lib/Bitcode/Writer/Writer.cpp
Changes in directory llvm/lib/Bitcode/Writer: Writer.cpp updated: 1.6 - 1.7 --- Log message: fix off-by-one computing size for section abbrevs --- Diffs of the changes: (+1 -1) Writer.cpp |2 +- 1 files changed, 1 insertion(+), 1 deletion(-) Index: llvm/lib/Bitcode/Writer/Writer.cpp diff -u llvm/lib/Bitcode/Writer/Writer.cpp:1.6 llvm/lib/Bitcode/Writer/Writer.cpp:1.7 --- llvm/lib/Bitcode/Writer/Writer.cpp:1.6 Mon Apr 23 19:16:04 2007 +++ llvm/lib/Bitcode/Writer/Writer.cpp Mon Apr 23 22:29:47 2007 @@ -220,7 +220,7 @@ Abbv-Add(BitCodeAbbrevOp(0)); else Abbv-Add(BitCodeAbbrevOp(BitCodeAbbrevOp::FixedWidth, - Log2_32_Ceil(SectionMap.size(; + Log2_32_Ceil(SectionMap.size()+1))); // Don't bother emitting vis + thread local. SimpleGVarAbbrev = Stream.EmitAbbrev(Abbv); } ___ llvm-commits mailing list llvm-commits@cs.uiuc.edu http://lists.cs.uiuc.edu/mailman/listinfo/llvm-commits
[llvm-commits] CVS: llvm/lib/Bitcode/Writer/Writer.cpp
Changes in directory llvm/lib/Bitcode/Writer: Writer.cpp updated: 1.1 - 1.2 --- Log message: promote LLVMBitCodes to be a public header --- Diffs of the changes: (+1 -1) Writer.cpp |2 +- 1 files changed, 1 insertion(+), 1 deletion(-) Index: llvm/lib/Bitcode/Writer/Writer.cpp diff -u llvm/lib/Bitcode/Writer/Writer.cpp:1.1 llvm/lib/Bitcode/Writer/Writer.cpp:1.2 --- llvm/lib/Bitcode/Writer/Writer.cpp:1.1 Sun Apr 22 01:24:45 2007 +++ llvm/lib/Bitcode/Writer/Writer.cpp Sun Apr 22 20:01:37 2007 @@ -13,7 +13,7 @@ #include llvm/Bitcode/ReaderWriter.h #include llvm/Bitcode/BitstreamWriter.h -#include ../LLVMBitCodes.h +#include llvm/Bitcode/LLVMBitCodes.h #include ValueEnumerator.h #include llvm/DerivedTypes.h #include llvm/Module.h ___ llvm-commits mailing list llvm-commits@cs.uiuc.edu http://lists.cs.uiuc.edu/mailman/listinfo/llvm-commits
