RunLoopVectorization("vectorize-loops",
cl::desc("Run the Loop vectorization passes"));
+static cl::opt<bool>
+LateVectorization("late-vectorize", cl::init(false), cl::Hidden,
+ cl::desc("Run the vectorization pasess late in the pass "
+ "pipeline (after the inliner)"));
+
static cl::opt<bool>
RunSLPVectorization("vectorize-slp",
cl::desc("Run the SLP vectorization passes"));
SizeLevel = 0;
LibraryInfo = 0;
Inliner = 0;
- DisableSimplifyLibCalls = false;
DisableUnitAtATime = false;
DisableUnrollLoops = false;
BBVectorize = RunBBVectorization;
SLPVectorize = RunSLPVectorization;
LoopVectorize = RunLoopVectorization;
+ LateVectorize = LateVectorization;
}
PassManagerBuilder::~PassManagerBuilder() {
else
MPM.add(createScalarReplAggregatesPass(-1, false));
MPM.add(createEarlyCSEPass()); // Catch trivial redundancies
- if (!DisableSimplifyLibCalls)
- MPM.add(createSimplifyLibCallsPass()); // Library Call Optimizations
MPM.add(createJumpThreadingPass()); // Thread jumps.
MPM.add(createCorrelatedValuePropagationPass()); // Propagate conditionals
MPM.add(createCFGSimplificationPass()); // Merge & remove BBs
MPM.add(createLoopIdiomPass()); // Recognize idioms like memset.
MPM.add(createLoopDeletionPass()); // Delete dead loops
- if (LoopVectorize && OptLevel > 2)
- MPM.add(createLoopVectorizePass());
+ if (!LateVectorize && LoopVectorize && OptLevel > 1 && SizeLevel < 2)
+ MPM.add(createLoopVectorizePass());
if (!DisableUnrollLoops)
MPM.add(createLoopUnrollPass()); // Unroll small loops
addExtensionsToPM(EP_ScalarOptimizerLate, MPM);
- if (SLPVectorize)
- MPM.add(createSLPVectorizerPass()); // Vectorize parallel scalar chains.
-
- if (BBVectorize) {
- MPM.add(createBBVectorizePass());
- MPM.add(createInstructionCombiningPass());
- if (OptLevel > 1 && UseGVNAfterVectorization)
- MPM.add(createGVNPass()); // Remove redundancies
- else
- MPM.add(createEarlyCSEPass()); // Catch trivial redundancies
-
- // BBVectorize may have significantly shortened a loop body; unroll again.
- if (!DisableUnrollLoops)
- MPM.add(createLoopUnrollPass());
+ if (!LateVectorize) {
+ if (SLPVectorize)
+ MPM.add(createSLPVectorizerPass()); // Vectorize parallel scalar chains.
+
+ if (BBVectorize) {
+ MPM.add(createBBVectorizePass());
+ MPM.add(createInstructionCombiningPass());
+ if (OptLevel > 1 && UseGVNAfterVectorization)
+ MPM.add(createGVNPass()); // Remove redundancies
+ else
+ MPM.add(createEarlyCSEPass()); // Catch trivial redundancies
+
+ // BBVectorize may have significantly shortened a loop body; unroll again.
+ if (!DisableUnrollLoops)
+ MPM.add(createLoopUnrollPass());
+ }
}
MPM.add(createAggressiveDCEPass()); // Delete dead instructions
MPM.add(createCFGSimplificationPass()); // Merge & remove BBs
MPM.add(createInstructionCombiningPass()); // Clean up after everything.
+ // As an experimental mode, run any vectorization passes in a separate
+ // pipeline from the CGSCC pass manager that runs iteratively with the
+ // inliner.
+ if (LateVectorize) {
+ // FIXME: This is a HACK! The inliner pass above implicitly creates a CGSCC
+ // pass manager that we are specifically trying to avoid. To prevent this
+ // we must insert a no-op module pass to reset the pass manager.
+ MPM.add(createBarrierNoopPass());
+
+ // Add the various vectorization passes and relevant cleanup passes for
+ // them since we are no longer in the middle of the main scalar pipeline.
+ if (LoopVectorize && OptLevel > 1 && SizeLevel < 2) {
+ MPM.add(createLoopVectorizePass());
+
+ if (!DisableUnrollLoops)
+ MPM.add(createLoopUnrollPass()); // Unroll small loops
+
+ // FIXME: Is this necessary/useful? Should we also do SimplifyCFG?
+ MPM.add(createInstructionCombiningPass());
+ }
+
+ if (SLPVectorize) {
+ MPM.add(createSLPVectorizerPass()); // Vectorize parallel scalar chains.
+
+ // FIXME: Is this necessary/useful? Should we also do SimplifyCFG?
+ MPM.add(createInstructionCombiningPass());
+ }
+
+ if (BBVectorize) {
+ MPM.add(createBBVectorizePass());
+ MPM.add(createInstructionCombiningPass());
+ if (OptLevel > 1 && UseGVNAfterVectorization)
+ MPM.add(createGVNPass()); // Remove redundancies
+ else
+ MPM.add(createEarlyCSEPass()); // Catch trivial redundancies
+
+ // BBVectorize may have significantly shortened a loop body; unroll again.
+ if (!DisableUnrollLoops)
+ MPM.add(createLoopUnrollPass());
+ }
+ }
+
if (!DisableUnitAtATime) {
// FIXME: We shouldn't bother with this anymore.
MPM.add(createStripDeadPrototypesPass()); // Get rid of dead prototypes
void
LLVMPassManagerBuilderSetDisableSimplifyLibCalls(LLVMPassManagerBuilderRef PMB,
LLVMBool Value) {
- PassManagerBuilder *Builder = unwrap(PMB);
- Builder->DisableSimplifyLibCalls = Value;
+ // NOTE: The simplify-libcalls pass has been removed.
}
void