diff options
| author | Wei Mi <wmi@google.com> | 2020-01-27 16:49:50 -0800 |
|---|---|---|
| committer | Wei Mi <wmi@google.com> | 2020-01-27 16:53:20 -0800 |
| commit | f60671f049bcbe1de8f24ca2bb50aa23564e6a7f (patch) | |
| tree | 81bd57ba2dc9dc95b64716706a7394577290030a /clang/lib/Frontend/CompilerInvocation.cpp | |
| parent | 949294f39627421f4bfaaca7d5d9deacb33efbe0 (diff) | |
| download | llvm-f60671f049bcbe1de8f24ca2bb50aa23564e6a7f.zip llvm-f60671f049bcbe1de8f24ca2bb50aa23564e6a7f.tar.gz llvm-f60671f049bcbe1de8f24ca2bb50aa23564e6a7f.tar.bz2 | |
[LV] Remove nondeterminacy by changing LoopVectorizationLegality::Reductions
from DenseMap to MapVector
The iteration order of LoopVectorizationLegality::Reductions matters for the
final code generation, so we better use MapVector instead of DenseMap for it
to remove the nondeterminacy. reduction-order.ll in the patch is an example
reduced from the case we saw. In the output of opt command, the order of the
select instructions in the vector.body block keeps changing from run to run
currently.
Differential Revision: https://reviews.llvm.org/D73490
Diffstat (limited to 'clang/lib/Frontend/CompilerInvocation.cpp')
0 files changed, 0 insertions, 0 deletions