[Bug tree-optimization/32183] reassoc can more extra calculations into a loop

[pinskia at gcc dot gnu dot org]

------- Comment #8 from pinskia at gcc dot gnu dot org  2007-06-02 00:26 -------
I pasted the wrong part of the diff:
   # SMT.14_85 = PHI <SMT.14_183(16)>
 <L106>:;
   sum.6_192 = sum.6_87;
-  pretmp.56_197 = sf_77 * 500;

   # SMT.14_64 = PHI <SMT.14_184(18), SMT.14_85(17)>
   # i_74 = PHI <i_107(18), 0(17)>
@@ -244,7 +237,8 @@ cmn_prior (incep, varnorm, nfr, ceplen,
   D.1883_123 = (unsigned int) i_74;
   # VUSE <SMT.14_64>
   D.1709_105 = MEM[base: sum.6_87, index: D.1883_123, step: 4];
-  D.1710_106 = D.1709_105 * pretmp.56_197;
+  pretmp.56_197 = D.1709_105 * 500;
+  D.1710_106 = pretmp.56_197 * sf_77;
   D.1884_118 = (unsigned int) i_74;
   # SMT.14_184 = VDEF <SMT.14_64>
   MEM[base: sum.6_87, index: D.1884_118, step: 4] = D.1710_106;
@@ -293,7 +287,7 @@ cmn_prior (incep, varnorm, nfr, ceplen,


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32183