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[AVX] Add INSERT_SUBVECTOR and support it on x86. This provides a

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default implementation for x86, going through the stack in a similr
fashion to how the codegen implements BUILD_VECTOR.  Eventually this
will get matched to VINSERTF128 if AVX is available.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124307 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
David Greene
2011-01-26 19:13:22 +00:00
parent d2c9793bdf
commit cfe33c46aa
6 changed files with 105 additions and 1 deletions
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8
include/llvm/CodeGen/ISDOpcodes.h
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@ -269,6 +269,14 @@ namespace ISD {
/// lengths of the input vectors.
CONCAT_VECTORS,
/// INSERT_SUBVECTOR(VECTOR1, VECTOR2, IDX) - Returns a vector
/// with VECTOR2 inserted into VECTOR1 at the (potentially
/// variable) element number IDX, which must be a multiple of the
/// VECTOR2 vector length. The elements of VECTOR1 starting at
/// IDX are overwritten with VECTOR2. Elements IDX through
/// vector_length(VECTOR2) must be valid VECTOR1 indices.
INSERT_SUBVECTOR,
/// EXTRACT_SUBVECTOR(VECTOR, IDX) - Returns a subvector from VECTOR (an
/// vector value) starting with the element number IDX, which must be a
/// constant multiple of the result vector length.