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deploy-20250820-3 #1

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gh0s7 merged 352 commits from deploy-20250820-3 into master 2025-08-20 21:20:33 +08:00
Conversation 0 Commits 352 Files Changed 498 +21 -19
2 changed files with 21 additions and 19 deletions
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14
src/midend/Pass/Optimize/GlobalStrengthReduction.cpp
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@@ -671,13 +671,13 @@ bool GlobalStrengthReductionContext::reduceDivision(BinaryInst *inst) {
}
// x / c = x * magic_number (魔数乘法优化 - 使用libdivide算法)
if (isConstantInt(rhs, constVal) && constVal > 1 && constVal != (uint32_t)(-1)) {
// auto magicPair = computeMulhMagicNumbers(static_cast<int>(constVal));
Value* magicResult = createMagicDivisionLibdivide(inst, static_cast<int>(constVal));
replaceWithOptimized(inst, magicResult);
divisionOptCount++;
return true;
}
// if (isConstantInt(rhs, constVal) && constVal > 1 && constVal != (uint32_t)(-1)) {
// // auto magicPair = computeMulhMagicNumbers(static_cast<int>(constVal));
// Value* magicResult = createMagicDivisionLibdivide(inst, static_cast<int>(constVal));
// replaceWithOptimized(inst, magicResult);
// divisionOptCount++;
// return true;
// }
return false;
}

26
src/midend/Pass/Optimize/LoopStrengthReduction.cpp
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@@ -661,9 +661,9 @@ bool StrengthReductionContext::replaceOriginalInstruction(StrengthReductionCandi
case StrengthReductionCandidate::DIVIDE_CONST: {
// 任意常数除法
builder->setPosition(candidate->containingBlock,
candidate->containingBlock->findInstIterator(candidate->originalInst));
replacementValue = generateConstantDivisionReplacement(candidate, builder);
// builder->setPosition(candidate->containingBlock,
// candidate->containingBlock->findInstIterator(candidate->originalInst));
// replacementValue = generateConstantDivisionReplacement(candidate, builder);
break;
}
@@ -683,17 +683,19 @@ bool StrengthReductionContext::replaceOriginalInstruction(StrengthReductionCandi
);
// 检查原值是否为负数
Value* zero = ConstantInteger::get(0);
Value* isNegative = builder->createICmpLTInst(candidate->inductionVar, zero);
Value* shift31condidata = builder->createBinaryInst(
Instruction::Kind::kSra, candidate->inductionVar->getType(),
candidate->inductionVar, ConstantInteger::get(31)
);
// 如果为负数，需要调整结果
Value* adjustment = ConstantInteger::get(candidate->multiplier);
Value* adjustedTemp = builder->createAddInst(temp, adjustment);
// 使用条件分支来模拟select操作
// 为简化起见，这里先用一个更复杂但可工作的方式
// 实际应该创建条件分支，但这里先简化处理
replacementValue = temp; // 简化版本，假设大多数情况下不是负数
Value* adjustment = builder->createAndInst(shift31condidata, maskConstant);
Value* adjustedTemp = builder->createAddInst(candidate->inductionVar, adjustment);
Value* adjustedResult = builder->createBinaryInst(
Instruction::Kind::kAnd, candidate->inductionVar->getType(),
adjustedTemp, maskConstant
);
replacementValue = adjustedResult;
} else {
// 非负数的取模，直接使用位与
replacementValue = builder->createBinaryInst(