mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-23 17:29:19 +00:00
After physreg coalescing, physical registers might not have live ranges where
you would expect. Don't assert on that case, just give up. This fixes PR7513. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107046 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
parent
0b9b85647c
commit
610bebf777
@ -122,7 +122,8 @@ bool SimpleRegisterCoalescing::AdjustCopiesBackFrom(const CoalescerPair &CP,
|
||||
// AValNo is the value number in A that defines the copy, A3 in the example.
|
||||
SlotIndex CopyUseIdx = CopyIdx.getUseIndex();
|
||||
LiveInterval::iterator ALR = IntA.FindLiveRangeContaining(CopyUseIdx);
|
||||
assert(ALR != IntA.end() && "Live range not found!");
|
||||
// The live range might not exist after fun with physreg coalescing.
|
||||
if (ALR == IntA.end()) return false;
|
||||
VNInfo *AValNo = ALR->valno;
|
||||
// If it's re-defined by an early clobber somewhere in the live range, then
|
||||
// it's not safe to eliminate the copy. FIXME: This is a temporary workaround.
|
||||
|
Loading…
Reference in New Issue
Block a user