http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41881
Richard Guenther rguenth at gcc dot gnu.org changed:
What|Removed |Added
Target Milestone|4.5.4 |4.6.4
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41881
Jakub Jelinek jakub at gcc dot gnu.org changed:
What|Removed |Added
CC||jakub at gcc dot
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41881
Richard Guenther rguenth at gcc dot gnu.org changed:
What|Removed |Added
Target Milestone|4.5.2 |4.5.3
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rguenth at gcc dot gnu dot org changed:
What|Removed |Added
Priority|P3 |P2
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41881
--- Comment #6 from rguenth at gcc dot gnu dot org 2010-08-11 09:28 ---
I think that SLP doesn't handle reduction.
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rguenth at gcc dot gnu dot org changed:
What|Removed |Added
--- Comment #7 from irar at il dot ibm dot com 2010-08-11 10:24 ---
(In reply to comment #6)
I think that SLP doesn't handle reduction.
Not all kinds of reduction. We handle
#a1 = phi a0, a2
#b1 = phi b0, b2
...
a2 = a1 + x
b2 = b1 + y
Here we also have:
#a1 = phi a0, a9
...
a2 =
--- Comment #5 from drow at gcc dot gnu dot org 2010-08-10 16:01 ---
Verified on x86_64 using:
gcc-4.3 -O3 -o 43.s -S reduc.c -ftree-vectorizer-verbose=1
[two loops vectorized]
gcc-4.4 -O3 -o 43.s -S reduc.c -ftree-vectorizer-verbose=1
[one loop vectorized]
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drow at gcc dot gnu
