[Bug tree-optimization/42286] October 23rd change to tree-ssa-pre.c breaks calculix on powerpc with -ffast-math

[irar at il dot ibm dot com]

------- Comment #3 from irar at il dot ibm dot com  2009-12-06 13:25 -------
On powerpc64-suse-linux with current trunk calculix failed after a couple of
minutes with
-O3  -maltivec -ffast-math
-O3  -maltivec -ffast-math -fno-tree-vectorize
-O2  -maltivec -ffast-math
-O1  -maltivec -ffast-math

It is currently running for about an hour with
-O0  -maltivec -ffast-math

Ira


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42286