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Make the use of the vmla and vmls VFP instructions controllable via cmd line.

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Preliminary testing shows significant performance wins by not using these
instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99436 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jim Grosbach
2010-03-24 22:31:46 +00:00
parent 044be39090
commit 2676737e5e
5 changed files with 30 additions and 4 deletions
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14
lib/Target/ARM/ARMInstrFormats.td
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@@ -1369,6 +1369,20 @@ class ADbI<bits<5> opcod1, bits<2> opcod2, bit op6, bit op4, dag oops,
let Inst{4} = op4;
}
// Double precision, binary, VML[AS] (for additional predicate)
class ADbI_vmlX<bits<5> opcod1, bits<2> opcod2, bit op6, bit op4, dag oops,
dag iops, InstrItinClass itin, string opc, string asm,
list<dag> pattern>
: VFPAI<oops, iops, VFPBinaryFrm, itin, opc, asm, pattern> {
let Inst{27-23} = opcod1;
let Inst{21-20} = opcod2;
let Inst{11-8} = 0b1011;
let Inst{6} = op6;
let Inst{4} = op4;
list<Predicate> Predicates = [HasVFP2, UseVMLx];
}
// Single precision, unary
class ASuI<bits<5> opcod1, bits<2> opcod2, bits<4> opcod3, bits<2> opcod4,
bit opcod5, dag oops, dag iops, InstrItinClass itin, string opc,