search for: neg_tglobaladdr_xform

Displaying 3 results from an estimated 3 matches for "neg_tglobaladdr_xform".

2011 Apr 26
0
[LLVMdev] Symbol folding with MC
...the symbol reference using patterns, if it's even possible. The obvious hack is adding a "-" char when lowering the symbol reference into text. > You can probably do some of this with a complex pattern that has a transform function. Something like (completely untested, etc): def neg_tglobaladdr_XFORM : SDNodeXForm<tglobaladdr, [{return makeNegatedGlobalAddr(CurDAG);}]>; def neg_tglobaladdr : PatLeaf<(tglobaladdr), [{ return <true if the curdag really is a tglobaladdr, false otherwise>; }], neg_tglobaladdr_XFORM>; def : Pat<(add DREGS:$src, (Wrapper tglobaladdr:$src2...
2011 Apr 27
1
[LLVMdev] Symbol folding with MC
...if it's > even possible. The obvious hack is adding a "-" char when lowering the > symbol reference into text. > > > > You can probably do some of this with a complex pattern that has a > transform function. Something like (completely untested, etc): > > def neg_tglobaladdr_XFORM : SDNodeXForm<tglobaladdr, [{return > makeNegatedGlobalAddr(CurDAG);}]>; > def neg_tglobaladdr : PatLeaf<(tglobaladdr), [{ > return <true if the curdag really is a tglobaladdr, false otherwise>; > }], neg_tglobaladdr_XFORM>; > > def : Pat<(add DREGS:$src,...
2011 Apr 26
2
[LLVMdev] Symbol folding with MC
Hello Jim thanks for the reply, For normal additions with immediates I've done the same as ARM does, basically transforming add(x, imm) nodes to sub(x, -imm) with a pattern in the .td file like this: def : Pat<(add DLDREGS:$src1, imm:$src2), (SUBIWRdK DLDREGS:$src1, (imm16_neg_XFORM imm:$src2))>; Now, the typical pattern concerning additions with global addresses looks