6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-08-13 07:29:38 +00:00
Code Issues Projects Releases Wiki Activity

Encode all value symtab strings as arrays of 8-bit fixed width integers,

Browse Source 
instead of the default inefficient encoding.  This shrinks kc++ from 4134K
to 3629K


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36755 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2007-05-04 20:34:50 +00:00
parent 3c074f61ed
commit 2e7899dae9
1 changed files with 15 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

30
lib/Bitcode/Writer/BitcodeWriter.cpp
View File

@ -267,22 +267,22 @@ static void WriteModuleInfo(const Module *M, const ValueEnumerator &VE,
// Add an abbrev for common globals with no visibility or thread localness. // Add an abbrev for common globals with no visibility or thread localness.
BitCodeAbbrev *Abbv = new BitCodeAbbrev(); BitCodeAbbrev *Abbv = new BitCodeAbbrev();
Abbv->Add(BitCodeAbbrevOp(bitc::MODULE_CODE_GLOBALVAR)); Abbv->Add(BitCodeAbbrevOp(bitc::MODULE_CODE_GLOBALVAR));
Abbv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::FixedWidth, Abbv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed,
Log2_32_Ceil(MaxGlobalType+1))); Log2_32_Ceil(MaxGlobalType+1)));
Abbv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::FixedWidth, 1)); // Constant. Abbv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Constant.
Abbv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Initializer. Abbv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Initializer.
Abbv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::FixedWidth, 3)); // Linkage. Abbv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // Linkage.
if (MaxAlignment == 0) // Alignment. if (MaxAlignment == 0) // Alignment.
Abbv->Add(BitCodeAbbrevOp(0)); Abbv->Add(BitCodeAbbrevOp(0));
else { else {
unsigned MaxEncAlignment = Log2_32(MaxAlignment)+1; unsigned MaxEncAlignment = Log2_32(MaxAlignment)+1;
Abbv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::FixedWidth, Abbv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed,
Log2_32_Ceil(MaxEncAlignment+1))); Log2_32_Ceil(MaxEncAlignment+1)));
} }
if (SectionMap.empty()) // Section. if (SectionMap.empty()) // Section.
Abbv->Add(BitCodeAbbrevOp(0)); Abbv->Add(BitCodeAbbrevOp(0));
else else
Abbv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::FixedWidth, Abbv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed,
Log2_32_Ceil(SectionMap.size()+1))); Log2_32_Ceil(SectionMap.size()+1)));
// Don't bother emitting vis + thread local. // Don't bother emitting vis + thread local.
SimpleGVarAbbrev = Stream.EmitAbbrev(Abbv); SimpleGVarAbbrev = Stream.EmitAbbrev(Abbv);
@ -702,15 +702,14 @@ static void WriteValueSymbolTable(const ValueSymbolTable &VST,
BitstreamWriter &Stream) { BitstreamWriter &Stream) {
if (VST.empty()) return; if (VST.empty()) return;
Stream.EnterSubblock(bitc::VALUE_SYMTAB_BLOCK_ID, 3); Stream.EnterSubblock(bitc::VALUE_SYMTAB_BLOCK_ID, 3);
#if 0 // 8-bit fixed width VST_ENTRY strings.
BitCodeAbbrev *Abbv = new BitCodeAbbrev(); BitCodeAbbrev *Abbv = new BitCodeAbbrev();
Abbv->Add(BitCodeAbbrevOp(bitc::VST_ENTRY)); Abbv->Add(BitCodeAbbrevOp(bitc::VST_CODE_ENTRY));
Abbv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::FixedWidth, Abbv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8));
Log2_32_Ceil(MaxGlobalType+1))); Abbv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array));
// Don't bother emitting vis + thread local. Abbv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 8));
SimpleGVarAbbrev = Stream.EmitAbbrev(Abbv); unsigned AbbrevID = Stream.EmitAbbrev(Abbv);
#endif
// FIXME: Set up the abbrev, we know how many values there are! // FIXME: Set up the abbrev, we know how many values there are!
@ -728,6 +727,7 @@ static void WriteValueSymbolTable(const ValueSymbolTable &VST,
Code = bitc::VST_CODE_BBENTRY; Code = bitc::VST_CODE_BBENTRY;
} else { } else {
Code = bitc::VST_CODE_ENTRY; Code = bitc::VST_CODE_ENTRY;
AbbrevToUse = AbbrevID;
} }
NameVals.push_back(VE.getValueID(SI->getValue())); NameVals.push_back(VE.getValueID(SI->getValue()));
@ -873,7 +873,7 @@ static void WriteBlockInfo(BitstreamWriter &Stream) {
BitCodeAbbrev *Abbv = new BitCodeAbbrev(); BitCodeAbbrev *Abbv = new BitCodeAbbrev();
Abbv->Add(BitCodeAbbrevOp(bitc::VST_CODE_ENTRY)); Abbv->Add(BitCodeAbbrevOp(bitc::VST_CODE_ENTRY));
Abbv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8); // Value ID Abbv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8); // Value ID
Abbv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::FixedWidth, 3)); // Linkage. Abbv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // Linkage.
xxx = Stream.EmitAbbrev(Abbv); xxx = Stream.EmitAbbrev(Abbv);
#endif #endif