1 //===- EarlyCSE.cpp - Simple and fast CSE pass ----------------------------===//
63 #define DEBUG_TYPE "early-cse"
66 STATISTIC(NumCSE,      "Number of instructions CSE'd");
68 STATISTIC(NumCSELoad,  "Number of load instructions CSE'd");
69 STATISTIC(NumCSECall,  "Number of call instructions CSE'd");
70 STATISTIC(NumCSEGEP, "Number of GEP instructions CSE'd");
73 DEBUG_COUNTER(CSECounter, "early-cse",
127           // Since we CSE across function calls we must not allow  in canHandle()
192   // mechanism that may remove flags to increase the likelihood of CSE.  in matchSelectWithOptionalNotCond()
223   // Don't CSE convergent calls in different basic blocks, because they  in hashCallInst()
334   // Don't CSE convergent calls in different basic blocks, because they  in getHashValueImpl()
633 /// A simple and fast domtree-based CSE pass.
673   /// CSE loads with other loads that have no intervening store.  Ordering
1531         LLVM_DEBUG(dbgs() << "EarlyCSE CSE: " << Inst << "  to: " << *V  in processNode()
1582         LLVM_DEBUG(dbgs() << "EarlyCSE CSE LOAD: " << Inst  in processNode()
1629         LLVM_DEBUG(dbgs() << "EarlyCSE CSE CALL: " << Inst  in processNode()
1658         LLVM_DEBUG(dbgs() << "EarlyCSE CSE GEP: " << Inst << "  to: " << *V  in processNode()
1720     // Okay, this isn't something we can CSE at all.  Check to see if it is  in processNode()
1836   EarlyCSE CSE(F.getDataLayout(), TLI, TTI, DT, AC, MSSA);  in run()  local
1838   if (!CSE.run())  in run()
1860 /// A simple and fast domtree-based CSE pass.
1890     EarlyCSE CSE(F.getDataLayout(), TLI, TTI, DT, AC, MSSA);  in runOnFunction()  local
1892     return CSE.run();  in runOnFunction()
1918 INITIALIZE_PASS_BEGIN(EarlyCSELegacyPass, "early-cse", "Early CSE", false,
1924 INITIALIZE_PASS_END(EarlyCSELegacyPass, "early-cse", "Early CSE", false, false)
1939 INITIALIZE_PASS_BEGIN(EarlyCSEMemSSALegacyPass, "early-cse-memssa",
1940                       "Early CSE w/ MemorySSA", false, false)
1947 INITIALIZE_PASS_END(EarlyCSEMemSSALegacyPass, "early-cse-memssa",
1948                     "Early CSE w/ MemorySSA", false, false)