llvm-6502

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Commit Graph

Author	SHA1	Message	Date
Nadav Rotem	7e413e9c94	The type-legalizer often scalarizes code. One of the common patterns is extract-and-truncate. In this patch we optimize this pattern and convert the sequence into extract op of a narrow type. This allows the BUILD_VECTOR dag optimizations to construct efficient shuffle operations in many cases. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149692 91177308-0d34-0410-b5e6-96231b3b80d8	2012-02-03 13:18:25 +00:00
Nadav Rotem	44bac7cd65	Fix a bug in the integer-promotion of bitcast operations on vector types. We must not issue a bitcast operation for integer-promotion of vector types, because the location of the values in the vector may be different. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146150 91177308-0d34-0410-b5e6-96231b3b80d8	2011-12-08 13:10:01 +00:00

Author

SHA1

Message

Date

Nadav Rotem

7e413e9c94

The type-legalizer often scalarizes code. One of the common patterns is extract-and-truncate.

In this patch we optimize this pattern and convert the sequence into extract op of a narrow type.
This allows the BUILD_VECTOR dag optimizations to construct efficient shuffle operations in many cases.




git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149692 91177308-0d34-0410-b5e6-96231b3b80d8

2012-02-03 13:18:25 +00:00

Nadav Rotem

44bac7cd65

Fix a bug in the integer-promotion of bitcast operations on vector types.

We must not issue a bitcast operation for integer-promotion of vector types, because the
location of the values in the vector may be different.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146150 91177308-0d34-0410-b5e6-96231b3b80d8

2011-12-08 13:10:01 +00:00

2 Commits