http://llvm.org/bugs/show_bug.cgi?id=14302
Bug #: 14302
Summary: misched asserts on powerpc: problems with regmasks
Product: libraries
Version: trunk
Platform: PC
OS/Version: Linux
Status: NEW
Severity: normal
Priority: P
Component: Common Code Generator Code
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected]
Classification: Unclassified
Created attachment 9511
--> http://llvm.org/bugs/attachment.cgi?id=9511
bugpoint reduced test case
The new machine-instruction scheduling infrastructure currently does not work
with the PowerPC backend; Something about the way the register masks are
handled is not quite right.
I've attached a small test case. This asserts with:
/src/llvm-trunk-writable/lib/CodeGen/LiveIntervalAnalysis.cpp:1260: void
llvm::LiveIntervals::HMEditor::updateRegMaskSlots(): Assertion `*RI == OldIdx
&& "No RegMask at OldIdx."' failed.
...
8 llc 0x0000000000ba92a8
llvm::LiveIntervals::handleMove(llvm::MachineInstr*, bool) + 632
9 llc 0x0000000000c1fabb
llvm::ScheduleDAGMI::moveInstruction(llvm::MachineInstr*,
llvm::MachineBasicBlock::bundle_iterator<llvm::MachineInstr,
llvm::ilist_iterator<llvm::MachineInstr> >) + 91
10 llc 0x0000000000c2006e
llvm::ScheduleDAGMI::scheduleMI(llvm::SUnit*, bool) + 510
11 llc 0x0000000000c23029 llvm::ScheduleDAGMI::schedule() + 121
This is r167618 running: llc -enable-misched
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