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llvm-svn: 27133
This commit is contained in:
Chris Lattner 2006-03-25 23:00:56 +00:00
parent f83db1efe6
commit 8b6f0daaae
1 changed files with 4 additions and 0 deletions
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4
lib/CodeGen/RegAllocLinearScan.cpp
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@ -539,6 +539,7 @@ void RA::assignRegOrStackSlotAtInterval(LiveInterval* cur)
DEBUG(std::cerr << "\tassigning stack slot at interval "<< *cur << ":\n"); DEBUG(std::cerr << "\tassigning stack slot at interval "<< *cur << ":\n");
// Find a register to spill.
float minWeight = float(HUGE_VAL); float minWeight = float(HUGE_VAL);
unsigned minReg = 0; unsigned minReg = 0;
for (TargetRegisterClass::iterator i = RC->allocation_order_begin(*mf_), for (TargetRegisterClass::iterator i = RC->allocation_order_begin(*mf_),
@ -549,6 +550,9 @@ void RA::assignRegOrStackSlotAtInterval(LiveInterval* cur)
minReg = reg; minReg = reg;
} }
} }
// If we didn't find a register that is spillable, try aliases?
// FIXME: assert(minReg && "Didn't find any reg!"); // FIXME: assert(minReg && "Didn't find any reg!");
DEBUG(std::cerr << "\t\tregister with min weight: " DEBUG(std::cerr << "\t\tregister with min weight: "
<< mri_->getName(minReg) << " (" << minWeight << ")\n"); << mri_->getName(minReg) << " (" << minWeight << ")\n");