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2008 May 08
1
[LLVMdev] PPC Isel complex patterns
Hi all, I have problem with specifying complex patterns in PPC Isel backend. I would like to fetch few instructions into one like that: def MatchPAT1 : Pat<(or (or (shl GPRC:$rA, (i32 imm:$imm24)), (and (shl GPRC:$rA, (i32 imm:$imm8)), 0xFF0000) ), (or (srl GPRC:$rA, (i32 imm:$imm24)), (and (shl GPRC:$rA, (i32 imm:$imm8)),0xFF00) )), (myinstr GPRC:$rA)>; That pattern corresponds to i32 bswap intrinsic. The thing is that such complex pattern matching does not work. I can...