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Don't count DebugInfo instructions in another limit
(lest they affect codegen). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65915 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -11439,12 +11439,18 @@ Instruction *InstCombiner::visitStoreInst(StoreInst &SI) {
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SI.getAlignment()))
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SI.setAlignment(KnownAlign);
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// Do really simple DSE, to catch cases where there are several consequtive
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// Do really simple DSE, to catch cases where there are several consecutive
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// stores to the same location, separated by a few arithmetic operations. This
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// situation often occurs with bitfield accesses.
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BasicBlock::iterator BBI = &SI;
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for (unsigned ScanInsts = 6; BBI != SI.getParent()->begin() && ScanInsts;
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--ScanInsts) {
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// Don't count debug info directives, lest they affect codegen.
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if (isa<DbgInfoIntrinsic>(BBI)) {
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ScanInsts++;
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--BBI;
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continue;
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}
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--BBI;
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if (StoreInst *PrevSI = dyn_cast<StoreInst>(BBI)) {
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