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Use a combination of sethi and or to build arbitrary immediates. 

llvm-svn: 24780
This commit is contained in:
Chris Lattner 2005-12-17 19:41:43 +00:00
parent 8546257435
commit 5e68639009
1 changed files with 7 additions and 0 deletions
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7
llvm/lib/Target/SparcV8/SparcV8InstrInfo.td
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@ -39,6 +39,10 @@ def simm13 : PatLeaf<(imm), [{
return (((int)N->getValue() << (32-13)) >> (32-13)) == (int)N->getValue();
}]>;
def LO10 : SDNodeXForm<imm, [{
return CurDAG->getTargetConstant((unsigned)N->getValue() & 1023, MVT::i32);
}]>;
def HI22 : SDNodeXForm<imm, [{
// Transformation function: shift the immediate value down into the low bits.
return CurDAG->getTargetConstant((unsigned)N->getValue() >> 10, MVT::i32);
@ -580,3 +584,6 @@ def FCMPED : F3_3<2, 0b110101, 0b001010110,
// Small immediates.
def : Pat<(i32 simm13:$val),
(ORri G0, imm:$val)>;
// Arbitrary immediates.
def : Pat<(i32 imm:$val),
(ORri (SETHIi (HI22 imm:$val)), (LO10 imm:$val))>;