https://bugs.llvm.org/show_bug.cgi?id=33057
Bug ID: 33057
Summary: Regalloc basic asserts with "Interference after
spill."
Product: libraries
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: Register Allocator
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Created attachment 18450
--> https://bugs.llvm.org/attachment.cgi?id=18450&action=edit
reduced testcase
llc -mtriple=s390x-linux-gnu -mcpu=z13 -disable-cgp -disable-machine-dce
-regalloc=basic -o /dev/null ./tc_regallocbasic.ll
llc: llvm/lib/CodeGen/RegAllocBasic.cpp:253: virtual unsigned int
{anonymous}::RABasic::selectOrSplit(llvm::LiveInterval&,
llvm::SmallVectorImpl<unsigned int>&): Assertion
`!Matrix->checkInterference(VirtReg, *PhysRegI) && "Interference after spill."'
failed.
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