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c4x.c (c4x_address_cost): Revert 9 Feb change.

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* config/c4x/c4x.c (c4x_address_cost): Revert 9 Feb change.
(While this patch fixed GIV combination for complex arithmetic
it screwed up generation of autoincrement addresses for the common cases.)

From-SVN: r25163
This commit is contained in:
Michael Hayes 1999-02-12 02:41:28 +00:00 committed by Michael Hayes
parent 3520cdec81
commit 21034cc500
2 changed files with 6 additions and 8 deletions
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4
gcc/ChangeLog
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@ -1,3 +1,7 @@
Fri Feb 12 23:37:26 1999 Michael Hayes <m.hayes@elec.canterbury.ac.nz>
* config/c4x/c4x.c (c4x_address_cost): Revert 9 Feb change.
Fri Feb 12 00:51:26 1999 Jeffrey A Law (law@cygnus.com)
* reload.c (find_reloads_address_1): Fix handling of an autoincremented

10
gcc/config/c4x/c4x.c
View File

@ -1526,14 +1526,8 @@ rtx addr;
break;
case REG:
/* Paradoxically, if we want autoincrement addressing for
complex arithmetic and structure arrays, we must give
REG+REG addressing the same cost as REG addressing to
prevent CSE from avoiding REG+REG addresses. This is
because GIV combination in loop.c is suboptimal and
needs fixing. */
if (flag_strength_reduce)
return 1;
/* This cost for REG+REG must be greater than the cost
for REG if we want autoincrement addressing modes. */
return 2;
case CONST_INT: