diff options
Diffstat (limited to 'llvm/lib/Target/ARM/ARMInstrInfo.td')
| -rw-r--r-- | llvm/lib/Target/ARM/ARMInstrInfo.td | 22 |
1 files changed, 19 insertions, 3 deletions
diff --git a/llvm/lib/Target/ARM/ARMInstrInfo.td b/llvm/lib/Target/ARM/ARMInstrInfo.td index 7d26b9dd62d..b0f4dedae03 100644 --- a/llvm/lib/Target/ARM/ARMInstrInfo.td +++ b/llvm/lib/Target/ARM/ARMInstrInfo.td @@ -284,6 +284,22 @@ def so_imm2part_2 : SDNodeXForm<imm, [{ return CurDAG->getTargetConstant(V, MVT::i32); }]>; +def so_neg_imm2part : Operand<i32>, PatLeaf<(imm), [{ + return ARM_AM::isSOImmTwoPartVal(-(int)N->getZExtValue()); + }]> { + let PrintMethod = "printSOImm2PartOperand"; +} + +def so_neg_imm2part_1 : SDNodeXForm<imm, [{ + unsigned V = ARM_AM::getSOImmTwoPartFirst(-(int)N->getZExtValue()); + return CurDAG->getTargetConstant(V, MVT::i32); +}]>; + +def so_neg_imm2part_2 : SDNodeXForm<imm, [{ + unsigned V = ARM_AM::getSOImmTwoPartSecond(-(int)N->getZExtValue()); + return CurDAG->getTargetConstant(V, MVT::i32); +}]>; + /// imm0_31 predicate - True if the 32-bit immediate is in the range [0,31]. def imm0_31 : Operand<i32>, PatLeaf<(imm), [{ return (int32_t)N->getZExtValue() < 32; @@ -1618,9 +1634,9 @@ def : ARMPat<(xor GPR:$LHS, so_imm2part:$RHS), def : ARMPat<(add GPR:$LHS, so_imm2part:$RHS), (ADDri (ADDri GPR:$LHS, (so_imm2part_1 imm:$RHS)), (so_imm2part_2 imm:$RHS))>; -def : ARMPat<(sub GPR:$LHS, so_imm2part:$RHS), - (SUBri (SUBri GPR:$LHS, (so_imm2part_1 imm:$RHS)), - (so_imm2part_2 imm:$RHS))>; +def : ARMPat<(add GPR:$LHS, so_neg_imm2part:$RHS), + (SUBri (SUBri GPR:$LHS, (so_neg_imm2part_1 imm:$RHS)), + (so_neg_imm2part_2 imm:$RHS))>; // 32-bit immediate using movw + movt. // This is a single pseudo instruction, the benefit is that it can be remat'd |
