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...smaller versions) later. > > Is the XCoreBranchLink enough of a match hint that an address wrapper > isn't required to clarify the pattern match for these call instructions? There's no wrapper in these patterns because the lowering code which creates the XCoreBranchLink SDNode (XCoreTargetLowering::LowerCCCCallTo()) doesn't add a wrapper around the callee. There is no need to add a wrapper because in the case of a call there is no ambiguity - a call of a global always use pc relative addressing on the XCore. The important thing here is that the pattern must match the nodes the i...

On 25/07/12 18:21, Richard Osborne wrote: > On 25 Jul 2012, at 04:49, Paul Shortis wrote: > > >> Hello, >> >> I'm considering creating an LLVM backend for a 16 bit processor and >> modelling it around the (experimental) MSP430 back end. >> >> When reviewing MSP430InstrInfo.td I see >> >> def MSP430Wrapper :