diff options
| -rw-r--r-- | lib/CodeGen/RegAllocLinearScan.cpp | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/CodeGen/RegAllocLinearScan.cpp b/lib/CodeGen/RegAllocLinearScan.cpp index 2713771..6925de3 100644 --- a/lib/CodeGen/RegAllocLinearScan.cpp +++ b/lib/CodeGen/RegAllocLinearScan.cpp @@ -886,6 +886,7 @@ unsigned RALinScan::getFreePhysReg(LiveInterval *cur) { // Scan for the first available register. TargetRegisterClass::iterator I = RC->allocation_order_begin(*mf_); TargetRegisterClass::iterator E = RC->allocation_order_end(*mf_); + assert(I != E && "No allocatable register in this register class!"); for (; I != E; ++I) if (prt_->isRegAvail(*I)) { FreeReg = *I; |