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Add an assertion instead of crashing when the scavenger goes past the end

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of a basic block.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128925 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bob Wilson 2011-04-05 20:44:15 +00:00
parent 06d2b4223f
commit bdaa9dc4a4
1 changed files with 2 additions and 1 deletions
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3
lib/CodeGen/RegisterScavenging.cpp
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@ -126,9 +126,10 @@ void RegScavenger::forward() {
MBBI = MBB->begin();
Tracking = true;
} else {
assert(MBBI != MBB->end() && "Already at the end of the basic block!");
assert(MBBI != MBB->end() && "Already past the end of the basic block!");
MBBI = llvm::next(MBBI);
}
assert(MBBI != MBB->end() && "Already at the end of the basic block!");
MachineInstr *MI = MBBI;