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...wind optnone define signext i16 @my_func() #0 { entry: ret i16 127 } ------- debug output -------- Optimized legalized selection DAG: BB#0 'my_func:entry' SelectionDAG has 5 nodes: t0: ch = EntryToken t3: ch,glue = CopyToReg t0, Register:i16 %R5, Constant:i16<127> t4: ch = TMS9900ISD::Ret t3, Register:i16 %R5, t3:1 ===== Instruction selection begins: BB#0 'entry' Selecting: t4: ch = TMS9900ISD::Ret t3, Register:i16 %R5, t3:1 ISEL: Starting pattern match on root node: t4: ch = TMS9900ISD::Ret t3, Register:i16 %R5, t3:1 Morphed node: t4: ch,glue = Retr Register:i16 %...

...>> >> ------- debug output -------- >> >> Optimized legalized selection DAG: BB#0 'my_func:entry' >> SelectionDAG has 5 nodes: >> t0: ch = EntryToken >> t3: ch,glue = CopyToReg t0, Register:i16 %R5, Constant:i16<127> >> t4: ch = TMS9900ISD::Ret t3, Register:i16 %R5, t3:1 >> >> ===== Instruction selection begins: BB#0 'entry' >> Selecting: t4: ch = TMS9900ISD::Ret t3, Register:i16 %R5, t3:1 >> >> ISEL: Starting pattern match on root node: t4: ch = TMS9900ISD::Ret t3, >> Register:i16 %R5, t3:...

So there's a DAG that looks like this in the debug output: Selecting: t3: ch,glue = CopyToReg t0, Register:i16 %R5, Constant:i16<127> In the instruction selection phase, what pattern would that match? I've constructed this so far: (??? REG16:$dst, i16imm:$src) but the problem is, I can't determine what to use as ???. There is an ISD::CopyToReg enum value, but I don't

...<LD2[@global_var](dereferenceable)> t8, GlobalAddress:i64<i16* @global_var> 0, undef:i64 t11: i16,ch = load<LD2[%a.addr](dereferenceable)> t8, FrameIndex:i64<0>, undef:i64 t12: i16 = add nsw t10, t11 t15: ch,glue = CopyToReg t13, Register:i16 %R5, t12 t16: ch = TMS9900ISD::Ret t15, Register:i16 %R5, t15:1 ... Where are the i64's coming from? -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20171102/a4f040e7/attachment.html>