Displaying 1 result from an estimated 1 matches for "a949cea5".
2013 Jul 30
1
[LLVMdev] Enabling the SLP-vectorizer by default for -O3
Nadav,
I ran some benchmarks and I'm seeing 3-6% performance loss on a few of them
when we use SLP on both O2 and O3 (with O3 having the biggest differences).
Unfortunately, my benchmarking is not scientific, so I can't vow for those
numbers, nor I'll have time to investigate it closer in the short term, but
I wouldn't be surprised if this is result of extra shuffles we were