diff options
Diffstat (limited to 'include/llvm/Target')
| -rw-r--r-- | include/llvm/Target/Target.td | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/include/llvm/Target/Target.td b/include/llvm/Target/Target.td index 7de8b38..c201f6b 100644 --- a/include/llvm/Target/Target.td +++ b/include/llvm/Target/Target.td @@ -22,12 +22,19 @@ include "llvm/IR/Intrinsics.td" class RegisterClass; // Forward def // SubRegIndex - Use instances of SubRegIndex to identify subregisters. -class SubRegIndex<list<SubRegIndex> comps = []> { +class SubRegIndex<int size = -1, int offset = 0> { string Namespace = ""; + // Size - Size (in bits) of the sub-registers represented by this index. + int Size = size; + + // Offset - Offset of the first bit that is part of this sub-register index. + int Offset = offset; + // ComposedOf - A list of two SubRegIndex instances, [A, B]. // This indicates that this SubRegIndex is the result of composing A and B. - list<SubRegIndex> ComposedOf = comps; + // See ComposedSubRegIndex. + list<SubRegIndex> ComposedOf = []; // CoveringSubRegIndices - A list of two or more sub-register indexes that // cover this sub-register. @@ -48,6 +55,14 @@ class SubRegIndex<list<SubRegIndex> comps = []> { list<SubRegIndex> CoveringSubRegIndices = []; } +// ComposedSubRegIndex - A sub-register that is the result of composing A and B. +// Offset is set to the sum of A and B's Offsets. Size is set to B's Size. +class ComposedSubRegIndex<SubRegIndex A, SubRegIndex B> + : SubRegIndex<B.Size, -1> { + // See SubRegIndex. + let ComposedOf = [A, B]; +} + // RegAltNameIndex - The alternate name set to use for register operands of // this register class when printing. class RegAltNameIndex { |