8210389: C2: assert(n->outcnt() != 0 || C->top() == n || n->is_Proj()) failed: No dead instructions after post-alloc
Reviewed-by: kvn, thartmann
## generate these charsets into sun.nio.cs#Big5Big5_SolarisBig5_HKSCSEUC_CNEUC_KRGBKGB18030IBM856IBM921IBM922IBM942IBM942CIBM943IBM943CIBM950IBM970IBM1046IBM1124IBM1129IBM1383ISO_8859_6ISO_8859_8MS1252TIS_620