llvm-project

nicolas/llvm-project

Fork 0

Commit Graph

Author	SHA1	Message	Date
Michael Liao	3ac8201ea4	Revert part of r166049 back and enable test case in r166125. - Folding (trunc (concat ... X )) to (concat ... (trunc X) ...) is valid when '...' are all 'undef's. - r166125 relies on this transformation. llvm-svn: 166155	2012-10-17 23:45:54 +00:00
Michael Liao	f630f4cadc	Disable extract-concat test case temporarily llvm-svn: 166141	2012-10-17 23:08:19 +00:00
Michael Liao	7a442c8031	Teach DAG combine to fold (extract_subvec (concat v1, ..) i) to v_i - If the extracted vector has the same type of all vectored being concatenated together, it should be simplified directly into v_i, where i is the index of the element being extracted. llvm-svn: 166125	2012-10-17 20:48:33 +00:00

Author

SHA1

Message

Date

Michael Liao

3ac8201ea4

Revert part of r166049 back and enable test case in r166125.

- Folding (trunc (concat ... X )) to (concat ... (trunc X) ...) is valid
  when '...' are all 'undef's.
- r166125 relies on this transformation.

llvm-svn: 166155

2012-10-17 23:45:54 +00:00

Michael Liao

f630f4cadc

Disable extract-concat test case temporarily

llvm-svn: 166141

2012-10-17 23:08:19 +00:00

Michael Liao

7a442c8031

Teach DAG combine to fold (extract_subvec (concat v1, ..) i) to v_i

- If the extracted vector has the same type of all vectored being concatenated
  together, it should be simplified directly into v_i, where i is the index of
  the element being extracted.

llvm-svn: 166125

2012-10-17 20:48:33 +00:00

3 Commits