diff options
Diffstat (limited to 'lib/Transforms/Scalar/SCCP.cpp')
| -rw-r--r-- | lib/Transforms/Scalar/SCCP.cpp | 15 |
1 files changed, 6 insertions, 9 deletions
diff --git a/lib/Transforms/Scalar/SCCP.cpp b/lib/Transforms/Scalar/SCCP.cpp index c6929c33b3e9e..7a6fa1711411d 100644 --- a/lib/Transforms/Scalar/SCCP.cpp +++ b/lib/Transforms/Scalar/SCCP.cpp @@ -536,9 +536,10 @@ private: void visitUnreachableInst(TerminatorInst &I) { /*returns void*/ } void visitFenceInst (FenceInst &I) { /*returns void*/ } void visitInstruction(Instruction &I) { - // If a new instruction is added to LLVM that we don't handle. + // All the instructions we don't do any special handling for just + // go to overdefined. DEBUG(dbgs() << "SCCP: Don't know how to handle: " << I << '\n'); - markOverdefined(&I); // Just in case + markOverdefined(&I); } }; @@ -1814,15 +1815,11 @@ static bool runIPSCCP(Module &M, const DataLayout &DL, if (F.isDeclaration()) continue; - if (Solver.isBlockExecutable(&F.front())) { + if (Solver.isBlockExecutable(&F.front())) for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end(); AI != E; - ++AI) { - if (AI->use_empty()) - continue; - if (tryToReplaceWithConstant(Solver, &*AI)) + ++AI) + if (!AI->use_empty() && tryToReplaceWithConstant(Solver, &*AI)) ++IPNumArgsElimed; - } - } for (Function::iterator BB = F.begin(), E = F.end(); BB != E; ++BB) { if (!Solver.isBlockExecutable(&*BB)) { |