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| author | Zhan Jun Liau <zhanjunl@ca.ibm.com> | 2016-06-22 16:16:27 +0000 |
|---|---|---|
| committer | Zhan Jun Liau <zhanjunl@ca.ibm.com> | 2016-06-22 16:16:27 +0000 |
| commit | 0df350589f6481c42514a4e0d02c8ac362ca4c49 (patch) | |
| tree | 916c1b1f8d03b618f3ea65913161945e45c2f79b /clang/lib/Frontend/CompilerInvocation.cpp | |
| parent | f228c95f872fd229b551ebaf194313935d0e8bda (diff) | |
| download | llvm-0df350589f6481c42514a4e0d02c8ac362ca4c49.zip llvm-0df350589f6481c42514a4e0d02c8ac362ca4c49.tar.gz llvm-0df350589f6481c42514a4e0d02c8ac362ca4c49.tar.bz2 | |
[SystemZ] Recognize RISBG opportunities involving a truncate
Summary:
Recognize RISBG opportunities where the end result is narrower than the
original input - where a truncate separates the shift/and operations.
The motivating case is some code in postgres which looks like:
srlg %r2, %r0, 11
nilh %r2, 255
Reviewers: uweigand
Author: RolandF
Differential Revision: http://reviews.llvm.org/D21452
llvm-svn: 273433
Diffstat (limited to 'clang/lib/Frontend/CompilerInvocation.cpp')
0 files changed, 0 insertions, 0 deletions