RFR(L): 8031321 Support Intel bit manipulation instructions (original) (raw)

Igor Ignatyev igor.ignatyev at oracle.com
Sat Feb 8 02:19:05 PST 2014

Igor, Are there any diagnostic flags which allow to verify that these instructions were used, like PrintIntrinsics?

Igor

On 02/07/2014 02:10 AM, Igor Veresov wrote:

This change adds support for BMI1 instructions on x86 (supported on AMD Piledriver and Intel Haswell). The changes in the matcher.cpp are kind of a temporary hack to workaround the inability to describe DAGs in ADL. I’ll address that problem properly a bit later (we need this change to land in 8u20).

I’m also using Rickard’s changes in type.hpp that are not quite in the repo yet. Webrev: http://cr.openjdk.java.net/~iveresov/8031321/webrev.00/ Testing: jprt, jtreg, ctw, the new regtest (verified that the instructions are generated and all). igor

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