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100193
2009 Jan 09
2
[LLVMdev] implicit CC register Defs cause "physreg was not killed in defining block!" assert
Hello,
For my backend, I define and use a CC register similiarly to the EFLAGS register in X86 (I call it CCFLAGS).
But if I make all arithmetic/logic instructions affect it ('let Defs = [CCFLAGS] in...' in InstrInfo.td) I run into
// The only case we should have a dead physreg here without a killing or
// instruction where we know it's dead is if it is live-in to the function