llvm-6502/include/llvm/Transforms
Hal Finkel 435798e96a Disable unrolling in the loop vectorizer when disabled in the pass manager
When unrolling is disabled in the pass manager, the loop vectorizer should also
not unroll loops. This will allow the -fno-unroll-loops option in Clang to
behave as expected (even for vectorizable loops). The loop vectorizer's
-force-vector-unroll option will (continue to) override the pass-manager
setting (including -force-vector-unroll=0 to force use of the internal
auto-selection logic).

In order to test this, I added a flag to opt (-disable-loop-unrolling) to force
disable unrolling through opt (the analog of -fno-unroll-loops in Clang). Also,
this fixes a small bug in opt where the loop vectorizer was enabled only after
the pass manager populated the queue of passes (the global_alias.ll test needed
a slight update to the RUN line as a result of this fix).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189499 91177308-0d34-0410-b5e6-96231b3b80d8
2013-08-28 18:33:10 +00:00
..
IPO Add a flag to defer vectorization into a phase after the inliner and its 2013-06-24 07:21:47 +00:00
Utils Fix assert with GEP ptr vector indexing structs 2013-08-19 21:43:16 +00:00
Instrumentation.h DataFlowSanitizer: greylist is now ABI list. 2013-08-14 18:54:12 +00:00
IPO.h Use an ArrayRef instead of a std::vector&. 2012-12-11 16:36:02 +00:00
ObjCARC.h Extracted ObjCARC.cpp into its own library libLLVMObjCARCOpts in preparation for refactoring the ARC Optimizer. 2013-01-28 01:35:51 +00:00
Scalar.h Turn MipsOptimizeMathLibCalls into a target-independent scalar transform 2013-08-23 10:27:02 +00:00
Vectorize.h Disable unrolling in the loop vectorizer when disabled in the pass manager 2013-08-28 18:33:10 +00:00