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int foo1(int x, int y) { int t1 = x >= 0; int t2 = y >= 0; return t1 & t2; } int foo2(int x, int y) { int t1 = x == -1; int t2 = y == -1; return t1 & t2; } produces: _foo1: or r2, r4, r3 srwi r2, r2, 31 xori r3, r2, 1 blr _foo2: and r2, r4, r3 addic r2, r2, 1 li r2, 0 addze r3, r2 blr instead of: _foo1: srwi r2, r4, 31 xori r2, r2, 1 srwi r3, r3, 31 xori r3, r3, 1 and r3, r2, r3 blr _foo2: addic r2, r4, 1 li r2, 0 addze r2, r2 addic r3, r3, 1 li r3, 0 addze r3, r3 and r3, r2, r3 blr git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21547 91177308-0d34-0410-b5e6-96231b3b80d8 |
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.. | ||
SelectionDAG | ||
AsmPrinter.cpp | ||
BranchFolding.cpp | ||
IntrinsicLowering.cpp | ||
LiveInterval.cpp | ||
LiveInterval.h | ||
LiveIntervalAnalysis.cpp | ||
LiveIntervalAnalysis.h | ||
LiveVariables.cpp | ||
MachineBasicBlock.cpp | ||
MachineCodeEmitter.cpp | ||
MachineFunction.cpp | ||
MachineInstr.cpp | ||
Makefile | ||
Passes.cpp | ||
PHIElimination.cpp | ||
PhysRegTracker.h | ||
PrologEpilogInserter.cpp | ||
RegAllocIterativeScan.cpp | ||
RegAllocLinearScan.cpp | ||
RegAllocLocal.cpp | ||
RegAllocSimple.cpp | ||
TwoAddressInstructionPass.cpp | ||
UnreachableBlockElim.cpp | ||
VirtRegMap.cpp | ||
VirtRegMap.h |