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(insert_regs): If a REG already is in a class but not in the mode we 

want, don't do anything to the classes.

From-SVN: r3951
This commit is contained in:
Richard Kenner 1993-03-31 07:00:31 -05:00
parent e6878cb948
commit 1ff0c00d9f
1 changed files with 8 additions and 3 deletions
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11
gcc/cse.c
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@ -984,9 +984,14 @@ insert_regs (x, classp, modified)
{
register int regno = REGNO (x);
if (modified
|| ! (REGNO_QTY_VALID_P (regno)
&& qty_mode[reg_qty[regno]] == GET_MODE (x)))
/* If REGNO is in the equivalence table already but is of the
wrong mode for that equivalence, don't do anything here. */
if (REGNO_QTY_VALID_P (regno)
&& qty_mode[reg_qty[regno]] != GET_MODE (x))
return 0;
if (modified || ! REGNO_QTY_VALID_P (regno))
{
if (classp)
for (classp = classp->first_same_value;