diff options
| author | Sanjay Patel <spatel@rotateright.com> | 2018-09-20 15:21:52 +0000 |
|---|---|---|
| committer | Sanjay Patel <spatel@rotateright.com> | 2018-09-20 15:21:52 +0000 |
| commit | fd4976bd191f98b1981db1c60027bbe643c98b9d (patch) | |
| tree | 0008366babaa801537e94123d7e03380559c8ca7 /llvm/include | |
| parent | 468f53b58c620031c11e47b3c3f27271797b0771 (diff) | |
| download | bcm5719-llvm-fd4976bd191f98b1981db1c60027bbe643c98b9d.tar.gz bcm5719-llvm-fd4976bd191f98b1981db1c60027bbe643c98b9d.zip | |
[IR] add shuffle query for vector concatenation
This can be used for combining and in the vectorizers/cost models.
llvm-svn: 342653
Diffstat (limited to 'llvm/include')
| -rw-r--r-- | llvm/include/llvm/IR/Instructions.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/llvm/include/llvm/IR/Instructions.h b/llvm/include/llvm/IR/Instructions.h index b17d779a865..54730208476 100644 --- a/llvm/include/llvm/IR/Instructions.h +++ b/llvm/include/llvm/IR/Instructions.h @@ -2513,6 +2513,11 @@ public: /// source vector. bool isIdentityWithExtract() const; + /// Return true if this shuffle concatenates its 2 source vectors. This + /// returns false if either input is undefined. In that case, the shuffle is + /// is better classified as an identity with padding operation. + bool isConcat() const; + /// Return true if this shuffle mask chooses elements from its source vectors /// without lane crossings. A shuffle using this mask would be /// equivalent to a vector select with a constant condition operand. |
