diff options
Diffstat (limited to 'lib/Target/R600/AMDGPUInstructions.td')
| -rw-r--r-- | lib/Target/R600/AMDGPUInstructions.td | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/lib/Target/R600/AMDGPUInstructions.td b/lib/Target/R600/AMDGPUInstructions.td index b44d2482d5..d2620b2877 100644 --- a/lib/Target/R600/AMDGPUInstructions.td +++ b/lib/Target/R600/AMDGPUInstructions.td @@ -284,6 +284,17 @@ class SHA256MaPattern <Instruction BFI_INT, Instruction XOR> : Pat < (BFI_INT (XOR i32:$x, i32:$y), i32:$z, i32:$y) >; +// Bitfield extract patterns + +def legalshift32 : ImmLeaf <i32, [{return Imm >=0 && Imm < 32;}]>; +def bfemask : PatLeaf <(imm), [{return isMask_32(N->getZExtValue());}], + SDNodeXForm<imm, [{ return CurDAG->getTargetConstant(CountTrailingOnes_32(N->getZExtValue()), MVT::i32);}]>>; + +class BFEPattern <Instruction BFE> : Pat < + (and (srl i32:$x, legalshift32:$y), bfemask:$z), + (BFE $x, $y, $z) +>; + include "R600Instructions.td" include "SIInstrInfo.td" |