llvm-project

245491a9 - [MC] Disable MCAssembler based constant folding for DwarfDebug

[MC] Disable MCAssembler based constant folding for DwarfDebug Related to the poor performance of MCAssembler based constant folding (see `bool MCExpr::evaluateAsAbsolute(int64_t &Res, const MCAssembler *Asm) const` and `AttemptToFoldSymbolOffsetDifference`), commit 9500a5d02e23f9b43294e5f662ac099f8989c0e4 (#91082) caused -O0 -g compile time regression. 9500a5d02e23f9b43294e5f662ac099f8989c0e4 special cased .eh_frame FDE emitting. This patch adds a special case to .debug_* emitting as well to mitigate the rest regression. The MCAssembler based constant folding strategy should be improved to remove the two special cases.