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author | Chris Lattner <sabre@nondot.org> | 2010-02-28 22:14:32 +0000 |
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committer | Chris Lattner <sabre@nondot.org> | 2010-02-28 22:14:32 +0000 |
commit | 5310654dc56c64b726bba7da82d568137ec81bbc (patch) | |
tree | a38406fd7ba32ae30c984fc1b20fe18c0704a14b /utils/TableGen/DAGISelMatcherEmitter.cpp | |
parent | aa6d70802844ee17fc38ab99850faf4d02a8b76a (diff) | |
download | external_llvm-5310654dc56c64b726bba7da82d568137ec81bbc.zip external_llvm-5310654dc56c64b726bba7da82d568137ec81bbc.tar.gz external_llvm-5310654dc56c64b726bba7da82d568137ec81bbc.tar.bz2 |
change a few opcodes to use VBRs instead of embedding
immediate sizes into the opcode.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97423 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'utils/TableGen/DAGISelMatcherEmitter.cpp')
-rw-r--r-- | utils/TableGen/DAGISelMatcherEmitter.cpp | 75 |
1 files changed, 15 insertions, 60 deletions
diff --git a/utils/TableGen/DAGISelMatcherEmitter.cpp b/utils/TableGen/DAGISelMatcherEmitter.cpp index c6addd8..c25243d 100644 --- a/utils/TableGen/DAGISelMatcherEmitter.cpp +++ b/utils/TableGen/DAGISelMatcherEmitter.cpp @@ -24,46 +24,6 @@ enum { CommentIndent = 30 }; -/// ClassifyInt - Classify an integer by size, return '1','2','4','8' if this -/// fits in 1, 2, 4, or 8 sign extended bytes. -static char ClassifyInt(int64_t Val) { - if (Val == int8_t(Val)) return '1'; - if (Val == int16_t(Val)) return '2'; - if (Val == int32_t(Val)) return '4'; - return '8'; -} - -/// EmitInt - Emit the specified integer, returning the number of bytes emitted. -static unsigned EmitInt(int64_t Val, formatted_raw_ostream &OS) { - unsigned BytesEmitted = 1; - OS << (int)(unsigned char)Val << ", "; - if (Val == int8_t(Val)) { - OS << '\n'; - return BytesEmitted; - } - - OS << (int)(unsigned char)(Val >> 8) << ", "; - ++BytesEmitted; - - if (Val != int16_t(Val)) { - OS << (int)(unsigned char)(Val >> 16) << ", " - << (int)(unsigned char)(Val >> 24) << ", "; - BytesEmitted += 2; - - if (Val != int32_t(Val)) { - OS << (int)(unsigned char)(Val >> 32) << ", " - << (int)(unsigned char)(Val >> 40) << ", " - << (int)(unsigned char)(Val >> 48) << ", " - << (int)(unsigned char)(Val >> 56) << ", "; - BytesEmitted += 4; - } - } - - OS.PadToColumn(CommentIndent) << "// " << Val << " aka 0x"; - OS.write_hex(Val) << '\n'; - return BytesEmitted; -} - namespace { class MatcherTableEmitter { StringMap<unsigned> NodePredicateMap, PatternPredicateMap; @@ -142,13 +102,13 @@ static unsigned GetVBRSize(unsigned Val) { /// EmitVBRValue - Emit the specified value as a VBR, returning the number of /// bytes emitted. -static unsigned EmitVBRValue(unsigned Val, raw_ostream &OS) { +static uint64_t EmitVBRValue(uint64_t Val, raw_ostream &OS) { if (Val <= 127) { OS << Val << ", "; return 1; } - unsigned InVal = Val; + uint64_t InVal = Val; unsigned NumBytes = 0; while (Val >= 128) { OS << (Val&127) << "|128,"; @@ -291,11 +251,9 @@ EmitMatcher(const Matcher *N, unsigned Indent, unsigned CurrentIdx, << getEnumName(cast<CheckChildTypeMatcher>(N)->getType()) << ",\n"; return 2; - case Matcher::CheckInteger: { - int64_t Val = cast<CheckIntegerMatcher>(N)->getValue(); - OS << "OPC_CheckInteger" << ClassifyInt(Val) << ", "; - return EmitInt(Val, OS)+1; - } + case Matcher::CheckInteger: + OS << "OPC_CheckInteger, "; + return 1+EmitVBRValue(cast<CheckIntegerMatcher>(N)->getValue(), OS); case Matcher::CheckCondCode: OS << "OPC_CheckCondCode, ISD::" << cast<CheckCondCodeMatcher>(N)->getCondCodeName() << ",\n"; @@ -318,17 +276,14 @@ EmitMatcher(const Matcher *N, unsigned Indent, unsigned CurrentIdx, return 2; } - case Matcher::CheckAndImm: { - int64_t Val = cast<CheckAndImmMatcher>(N)->getValue(); - OS << "OPC_CheckAndImm" << ClassifyInt(Val) << ", "; - return EmitInt(Val, OS)+1; - } + case Matcher::CheckAndImm: + OS << "OPC_CheckAndImm, "; + return 1+EmitVBRValue(cast<CheckAndImmMatcher>(N)->getValue(), OS); - case Matcher::CheckOrImm: { - int64_t Val = cast<CheckOrImmMatcher>(N)->getValue(); - OS << "OPC_CheckOrImm" << ClassifyInt(Val) << ", "; - return EmitInt(Val, OS)+1; - } + case Matcher::CheckOrImm: + OS << "OPC_CheckOrImm, "; + return 1+EmitVBRValue(cast<CheckOrImmMatcher>(N)->getValue(), OS); + case Matcher::CheckFoldableChainNode: OS << "OPC_CheckFoldableChainNode,\n"; return 1; @@ -339,14 +294,14 @@ EmitMatcher(const Matcher *N, unsigned Indent, unsigned CurrentIdx, case Matcher::EmitInteger: { int64_t Val = cast<EmitIntegerMatcher>(N)->getValue(); - OS << "OPC_EmitInteger" << ClassifyInt(Val) << ", " + OS << "OPC_EmitInteger, " << getEnumName(cast<EmitIntegerMatcher>(N)->getVT()) << ", "; - return EmitInt(Val, OS)+2; + return 2+EmitVBRValue(Val, OS); } case Matcher::EmitStringInteger: { const std::string &Val = cast<EmitStringIntegerMatcher>(N)->getValue(); // These should always fit into one byte. - OS << "OPC_EmitInteger1, " + OS << "OPC_EmitInteger, " << getEnumName(cast<EmitStringIntegerMatcher>(N)->getVT()) << ", " << Val << ",\n"; return 3; |