llvm-project

Commit Graph

Author	SHA1	Message	Date
Nadav Rotem	5399f4d6bf	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. llvm-svn: 149692	2012-02-03 13:18:25 +00:00
Nadav Rotem	26edb291ac	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. llvm-svn: 146150	2011-12-08 13:10:01 +00:00

Author

SHA1

Message

Date

Nadav Rotem

5399f4d6bf

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.

llvm-svn: 149692

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

Nadav Rotem

26edb291ac

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.

llvm-svn: 146150

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

2 Commits