diff options
| author | Silviu Baranga <silviu.baranga@arm.com> | 2015-09-10 10:34:34 +0000 |
|---|---|---|
| committer | Silviu Baranga <silviu.baranga@arm.com> | 2015-09-10 10:34:34 +0000 |
| commit | df9ce8408a2ca784856032f0a2e32022430e5fec (patch) | |
| tree | cff626959ed38008a0986ffa3ba0101148c0d214 /llvm/lib/Support/StringRef.cpp | |
| parent | d47634d78123c998dd2ae58dbf5ec29ee832b0b4 (diff) | |
| download | llvm-df9ce8408a2ca784856032f0a2e32022430e5fec.zip llvm-df9ce8408a2ca784856032f0a2e32022430e5fec.tar.gz llvm-df9ce8408a2ca784856032f0a2e32022430e5fec.tar.bz2 | |
[DAGCombine] Truncate BUILD_VECTOR operators if necessary when constant folding vectors
Summary:
The BUILD_VECTOR node will truncate its operators to match the
type. We need to take this into account when constant folding -
we need to perform a truncation before constant folding the elements.
This is because the upper bits can change the result, depending on
the operation type (for example this is the case for min/max).
This change also adds a regression test.
Reviewers: jmolloy
Subscribers: jmolloy, llvm-commits
Differential Revision: http://reviews.llvm.org/D12697
llvm-svn: 247265
Diffstat (limited to 'llvm/lib/Support/StringRef.cpp')
0 files changed, 0 insertions, 0 deletions