diff options
Diffstat (limited to 'llvm/lib/Transforms')
| -rw-r--r-- | llvm/lib/Transforms/Scalar/IndVarSimplify.cpp | 16 |
1 files changed, 5 insertions, 11 deletions
diff --git a/llvm/lib/Transforms/Scalar/IndVarSimplify.cpp b/llvm/lib/Transforms/Scalar/IndVarSimplify.cpp index b536b534328..c35478e220b 100644 --- a/llvm/lib/Transforms/Scalar/IndVarSimplify.cpp +++ b/llvm/lib/Transforms/Scalar/IndVarSimplify.cpp @@ -603,12 +603,9 @@ bool IndVarSimplify::rewriteLoopExitValues(Loop *L, SCEVExpander &Rewriter) { if (ExitValue->getSCEVType()>=scMulExpr) { bool HasHardInternalUses = false; bool HasSoftExternalUses = false; - unsigned NumUses = 0; - for (auto IB = Inst->user_begin(), IE = Inst->user_end(); - IB != IE && NumUses <= 6; ++IB) { - Instruction *UseInstr = cast<Instruction>(*IB); + for (auto *IB : Inst->users()) { + Instruction *UseInstr = cast<Instruction>(IB); unsigned Opc = UseInstr->getOpcode(); - NumUses++; if (L->contains(UseInstr)) { if (Opc == Instruction::Call) HasHardInternalUses = true; @@ -616,11 +613,8 @@ bool IndVarSimplify::rewriteLoopExitValues(Loop *L, SCEVExpander &Rewriter) { if (Opc == Instruction::PHI) { // Do not count the Phi as a use. LCSSA may have inserted // plenty of trivial ones. - NumUses--; - for (auto PB = UseInstr->user_begin(), - PE = UseInstr->user_end(); - PB != PE && NumUses <= 6; ++PB, ++NumUses) { - unsigned PhiOpc = cast<Instruction>(*PB)->getOpcode(); + for (auto *PB : UseInstr->users()) { + unsigned PhiOpc = cast<Instruction>(PB)->getOpcode(); if (PhiOpc != Instruction::Call && PhiOpc != Instruction::Ret) { HasSoftExternalUses = true; @@ -635,7 +629,7 @@ bool IndVarSimplify::rewriteLoopExitValues(Loop *L, SCEVExpander &Rewriter) { } } } - if (NumUses <= 6 && HasHardInternalUses && !HasSoftExternalUses) + if (HasHardInternalUses && !HasSoftExternalUses) continue; } |
