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Diffstat (limited to 'lib/Target/Mips/Mips64InstrInfo.td')
| -rw-r--r-- | lib/Target/Mips/Mips64InstrInfo.td | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/lib/Target/Mips/Mips64InstrInfo.td b/lib/Target/Mips/Mips64InstrInfo.td index fbdc29bc94..7f895e23f9 100644 --- a/lib/Target/Mips/Mips64InstrInfo.td +++ b/lib/Target/Mips/Mips64InstrInfo.td @@ -237,6 +237,20 @@ let isCodeGenOnly = 1, rs = 0, shamt = 0 in { "sll\t$rd, $rt, 0", [], II_SLL>; } +// We need the following two pseudo instructions to avoid offset calculation for +// long branches. See the comment in file MipsLongBranch.cpp for detailed +// explanation. + +// Expands to: lui $dst, %highest($tgt - $baltgt) +def LONG_BRANCH_LUi64 : PseudoSE<(outs GPR64Opnd:$dst), + (ins brtarget:$tgt, brtarget:$baltgt), []>; + +// Expands to: daddiu $dst, $src, %PART($tgt - $baltgt) +// where %PART may be %higher, %hi or %lo, depending on the relocation kind +// that $tgt is annotated with. +def LONG_BRANCH_DADDiu : PseudoSE<(outs GPR64Opnd:$dst), + (ins GPR64Opnd:$src, brtarget:$tgt, brtarget:$baltgt), []>; + // Cavium Octeon cmMIPS instructions let Predicates = [HasCnMips] in { |