Why is postreload converting (set (REGX) (CONST_INT A)) ... (set (REGX) (CONST_INT B)) into (set (STRICT_LOW_PART (REGX)) (CONST_INT B))? That looks like a pessimisation especially if the constants are small, since STRICT_LOW_PART must not touch the high part. Is there a way for the backend to stop postreload from doing this if the constants are in some range? On the m68k, loading a constant in the range -128..127 in SI mode is better than loading it in strict QI mode.
Andreas. -- Andreas Schwab, sch...@linux-m68k.org GPG Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5 "And now for something completely different."
