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This solves the problem of having a kill flag inside a loop with a definition of the register prior to the loop: %vreg368<def> ... Inside loop: %vreg520<def> = COPY %vreg368 %vreg568<def,tied1> = add %vreg341<tied0>, %vreg520<kill> => was coalesced into => %vreg568<def,tied1> = add %vreg341<tied0>, %vreg368<kill> MachineVerifier then complained: *** Bad machine code: Virtual register killed in block, but needed live out. *** The kill flag for %vreg368 is incorrect, and is cleared by this patch. This is similar to the clearing done at the end of MachineSinking::SinkInstruction(). Patch provided by Jonas Paulsson. Reviewed by Quentin Colombet and Juergen Ributzka. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217427 91177308-0d34-0410-b5e6-96231b3b80d8 |
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Analysis | ||
AsmParser | ||
Bitcode | ||
CodeGen | ||
DebugInfo | ||
ExecutionEngine | ||
IR | ||
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LineEditor | ||
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CMakeLists.txt | ||
LLVMBuild.txt | ||
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