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[Hexagon] Create global std::map lazily. 

This could of course be a simple binary search with no global state
involved at all if someone cares enough. Just don't make everyone
linking the hexagon backend pay for it on process startup and shutdown.

llvm-svn: 274437
This commit is contained in:
Benjamin Kramer 2016-07-02 13:05:12 +00:00
parent f040d8c061
commit 4d9d2cc77f
1 changed files with 3 additions and 3 deletions
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6
llvm/lib/Target/Hexagon/MCTargetDesc/HexagonMCDuplexInfo.cpp
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@ -80,9 +80,6 @@ static const std::pair<unsigned, unsigned> opcodeData[] = {
std::make_pair((unsigned)V4_SS2_storewi0, 4096), std::make_pair((unsigned)V4_SS2_storewi0, 4096),
std::make_pair((unsigned)V4_SS2_storewi1, 4352)}; std::make_pair((unsigned)V4_SS2_storewi1, 4352)};
static std::map<unsigned, unsigned>
subinstOpcodeMap(std::begin(opcodeData), std::end(opcodeData));
bool HexagonMCInstrInfo::isDuplexPairMatch(unsigned Ga, unsigned Gb) { bool HexagonMCInstrInfo::isDuplexPairMatch(unsigned Ga, unsigned Gb) {
switch (Ga) { switch (Ga) {
case HexagonII::HSIG_None: case HexagonII::HSIG_None:
@ -587,6 +584,9 @@ bool HexagonMCInstrInfo::isOrderedDuplexPair(MCInstrInfo const &MCII,
unsigned MIaG = HexagonMCInstrInfo::getDuplexCandidateGroup(MIa), unsigned MIaG = HexagonMCInstrInfo::getDuplexCandidateGroup(MIa),
MIbG = HexagonMCInstrInfo::getDuplexCandidateGroup(MIb); MIbG = HexagonMCInstrInfo::getDuplexCandidateGroup(MIb);
static std::map<unsigned, unsigned> subinstOpcodeMap(std::begin(opcodeData),
std::end(opcodeData));
// If a duplex contains 2 insns in the same group, the insns must be // If a duplex contains 2 insns in the same group, the insns must be
// ordered such that the numerically smaller opcode is in slot 1. // ordered such that the numerically smaller opcode is in slot 1.
if ((MIaG != HexagonII::HSIG_None) && (MIaG == MIbG) && bisReversable) { if ((MIaG != HexagonII::HSIG_None) && (MIaG == MIbG) && bisReversable) {