diff options
Diffstat (limited to 'llvm/lib/CodeGen')
| -rw-r--r-- | llvm/lib/CodeGen/AggressiveAntiDepBreaker.cpp | 2 | ||||
| -rw-r--r-- | llvm/lib/CodeGen/CriticalAntiDepBreaker.cpp | 2 |
2 files changed, 4 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/AggressiveAntiDepBreaker.cpp b/llvm/lib/CodeGen/AggressiveAntiDepBreaker.cpp index 62e40e9636b..5a634d6ccb0 100644 --- a/llvm/lib/CodeGen/AggressiveAntiDepBreaker.cpp +++ b/llvm/lib/CodeGen/AggressiveAntiDepBreaker.cpp @@ -654,6 +654,8 @@ bool AggressiveAntiDepBreaker::FindSuitableFreeRegisters( if (R == RB) R = RE; --R; const unsigned NewSuperReg = *R; + // Don't consider non-allocatable registers + if (!AllocatableSet.test(NewSuperReg)) continue; // Don't replace a register with itself. if (NewSuperReg == SuperReg) continue; diff --git a/llvm/lib/CodeGen/CriticalAntiDepBreaker.cpp b/llvm/lib/CodeGen/CriticalAntiDepBreaker.cpp index 98d4d413201..335d2d8e9ba 100644 --- a/llvm/lib/CodeGen/CriticalAntiDepBreaker.cpp +++ b/llvm/lib/CodeGen/CriticalAntiDepBreaker.cpp @@ -330,6 +330,8 @@ CriticalAntiDepBreaker::findSuitableFreeRegister(MachineInstr *MI, for (TargetRegisterClass::iterator R = RC->allocation_order_begin(MF), RE = RC->allocation_order_end(MF); R != RE; ++R) { unsigned NewReg = *R; + // Don't consider non-allocatable registers + if (!AllocatableSet.test(NewReg)) continue; // Don't replace a register with itself. if (NewReg == AntiDepReg) continue; // Don't replace a register with one that was recently used to repair |
