diff options
Diffstat (limited to 'llvm/lib/CodeGen/AggressiveAntiDepBreaker.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/AggressiveAntiDepBreaker.cpp | 2 |
1 files changed, 2 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; |
