Commit f21d67da by Richard Stallman

(PREFERRED_RELOAD_CLASS): Avoid f regs for HI and QI if poss.

From-SVN: r1205
parent 96b5daff
......@@ -350,10 +350,16 @@ enum reg_class { NO_REGS, GENERAL_REGS, FP_REGS, ALL_REGS, LIM_REG_CLASSES };
integer register to an FP register. If we are trying to put a
non-zero floating-point constant into some register, use an integer
register if the constant is SFmode and GENERAL_REGS is one of our options.
Otherwise, put the constant into memory. */
Otherwise, put the constant into memory.
When reloading something smaller than a word, use a general reg
rather than an FP reg. */
#define PREFERRED_RELOAD_CLASS(X,CLASS) \
((CLASS) == ALL_REGS && GET_CODE (X) == CONST_INT ? GENERAL_REGS \
: ((GET_MODE (X) == HImode || GET_MODE (X) == QImode) \
&& (CLASS) == ALL_REGS) \
? GENERAL_REGS \
: (GET_CODE (X) == CONST_DOUBLE \
&& GET_MODE_CLASS (GET_MODE (X)) == MODE_FLOAT \
&& ! CONST_DOUBLE_OK_FOR_LETTER_P (X, 'G')) \
......
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