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Author	SHA1	Message	Date
Matt Pharr	d86653668e	Fix a number of tests to work correctly with 32/64-wide targets. Still to be reviewed/fixed: tests/test-, tests/[cfrs]	2012-05-29 10:16:43 -07:00
Matt Pharr	2460fa5c83	Improve gather/scatter optimization passes to handle loops better. Specifically, now we can work through phi nodes in the IR to detect cases where an index value is actually the same across lanes or is linear across the lanes. For example, this is a loop that used to require gathers but is now turned into vector loads: for (int i = programIndex; i < 16; i += programCount) sum += a[i]; Fixes issue #107.	2011-10-13 17:01:25 -07:00

Author

SHA1

Message

Date

Matt Pharr

d86653668e

Fix a number of tests to work correctly with 32/64-wide targets.

Still to be reviewed/fixed: tests/test-*, tests/[cfrs]*

2012-05-29 10:16:43 -07:00

Matt Pharr

2460fa5c83

Improve gather/scatter optimization passes to handle loops better.

Specifically, now we can work through phi nodes in the IR to detect cases
where an index value is actually the same across lanes or is linear across
the lanes.  For example, this is a loop that used to require gathers but
is now turned into vector loads:

    for (int i = programIndex; i < 16; i += programCount)
        sum += a[i];

Fixes issue #107.

2011-10-13 17:01:25 -07:00

2 Commits