[Bug tree-optimization/22372] Vectorizer produces mis-match types

[irar at il dot ibm dot com]

------- Comment #5 from irar at il dot ibm dot com  2006-11-27 11:19 -------
The patch I committed (comment #4) fixes almost all the type mismatch
occurrences in the vectorizer, but there's one occurrence that still remains -
one of the vectorizer testcases (vect-reduc-dot-u8b.c) still fails with
modify.diff.txt on MODIFY_EXPR where the right hand side is a call to a builtin
function (rs6000_builtin_mul_widen_even). For Altivec, the return value of the
builtin function is always signed (while the left hand side of the assignment
is unsigned). Is the check in modify.diff.txt too strict or is the problem with
the return type of the Altivec builtin (shouldn't it be signed/unsigned as
relevant, instead of always signed? Specifically - shouldn't builtin vmuloub
return an unsigned type)?

Ira 


-- 

irar at il dot ibm dot com changed:

           What    |Removed                     |Added
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                 CC|                            |irar at il dot ibm dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22372