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Merge commit 'e4ad23a1a594a9da6b96655d4256352d5f6d277d' into midend

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Lixuanwang
2025-08-03 18:37:36 +08:00
parent 58c8cd53f5 e4ad23a1a5
commit cd814de495
2 changed files with 12 additions and 1 deletions
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2
script/runit-single.sh
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@ -184,7 +184,7 @@ for sy_file in "${SY_FILES[@]}"; do
# 步骤 1: sysyc 编译
echo " 使用 sysyc 编译 (超时 ${SYSYC_TIMEOUT}s)..."
timeout -s KILL ${SYSYC_TIMEOUT} "${SYSYC}" -S "${sy_file}" ${OPTIMIZE_FLAG} -o "${assembly_file}"
# timeout -s KILL ${SYSYC_TIMEOUT} "${SYSYC}" -s ir "${sy_file}" ${OPTIMIZE_FLAG} > "${ir_file}"
timeout -s KILL ${SYSYC_TIMEOUT} "${SYSYC}" -s ir "${sy_file}" ${OPTIMIZE_FLAG} > "${ir_file}"
# timeout -s KILL ${SYSYC_TIMEOUT} "${SYSYC}" -s asmd "${sy_file}" > "${assembly_debug_file}" 2>&1
SYSYC_STATUS=$?
if [ $SYSYC_STATUS -eq 124 ]; then

11
src/backend/RISCv64/RISCv64RegAlloc.cpp
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@ -461,6 +461,17 @@ void RISCv64RegAlloc::coalesce() {
unsigned y = getAlias(*use.begin());
unsigned u, v;
if (precolored.count(y)) { u = y; v = x; } else { u = x; v = y; }
// 防御性检查，处理物理寄存器之间的传送指令
if (precolored.count(u) && precolored.count(v)) {
// 如果 u 和 v 都是物理寄存器，我们不能合并它们。
// 这通常是一条寄存器拷贝指令，例如 `mv a2, a1`。
// 把它加入 constrainedMoves 列表，然后直接返回，不再处理。
constrainedMoves.insert(move);
// addWorklist(u) 和 addWorklist(v) 在这里也不需要调用，
// 因为它们只对虚拟寄存器有意义。
return;
}
if (DEEPERDEBUG) std::cerr << "[Coalesce] Processing move between " << regIdToString(x)
<< " and " << regIdToString(y) << " (aliases " << regIdToString(u)