From d5d5a3dcbaa4e7f394ba045e2d7d0ec3aa76f50c Mon Sep 17 00:00:00 2001 From: Chris Lattner Date: Thu, 25 Mar 2010 06:33:05 +0000 Subject: Change tblgen to emit FOOISD opcode names as two bytes instead of one byte. This is important because we're running up to too many opcodes to fit in a byte and it is aggrevated by FIRST_TARGET_MEMORY_OPCODE making the numbering sparse. This just bites the bullet and bloats out the table. In practice, this increases the size of the x86 isel table from 74.5K to 76K. I think we'll cope :) This fixes rdar://7791648 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99494 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) (limited to 'lib/CodeGen/SelectionDAG') diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp index cbbe431175..6f7c2579fc 100644 --- a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp +++ b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp @@ -1888,7 +1888,9 @@ CheckNodePredicate(const unsigned char *MatcherTable, unsigned &MatcherIndex, ALWAYS_INLINE static bool CheckOpcode(const unsigned char *MatcherTable, unsigned &MatcherIndex, SDNode *N) { - return N->getOpcode() == MatcherTable[MatcherIndex++]; + uint16_t Opc = MatcherTable[MatcherIndex++]; + Opc |= (unsigned short)MatcherTable[MatcherIndex++] << 8; + return N->getOpcode() == Opc; } ALWAYS_INLINE static bool @@ -2142,7 +2144,8 @@ SelectCodeCommon(SDNode *NodeToMatch, const unsigned char *MatcherTable, if (CaseSize == 0) break; // Get the opcode, add the index to the table. - unsigned Opc = MatcherTable[Idx++]; + uint16_t Opc = MatcherTable[Idx++]; + Opc |= (unsigned short)MatcherTable[Idx++] << 8; if (Opc >= OpcodeOffset.size()) OpcodeOffset.resize((Opc+1)*2); OpcodeOffset[Opc] = Idx; @@ -2298,8 +2301,11 @@ SelectCodeCommon(SDNode *NodeToMatch, const unsigned char *MatcherTable, CaseSize = GetVBR(CaseSize, MatcherTable, MatcherIndex); if (CaseSize == 0) break; + uint16_t Opc = MatcherTable[MatcherIndex++]; + Opc |= (unsigned short)MatcherTable[MatcherIndex++] << 8; + // If the opcode matches, then we will execute this case. - if (CurNodeOpcode == MatcherTable[MatcherIndex++]) + if (CurNodeOpcode == Opc) break; // Otherwise, skip over this case. -- cgit v1.2.3-70-g09d2