Jingyue Wu 30a21f9ce5 [SROA] Fold a PHI node if all its incoming values are the same ...

Summary:
Fixes PR20425.

During slice building, if all of the incoming values of a PHI node are the same, replace the PHI node with the common value. This simplification makes alloca's used by PHI nodes easier to promote.

Test Plan: Added three more tests in phi-and-select.ll

Reviewers: nlewycky, eliben, meheff, chandlerc

Reviewed By: chandlerc

Subscribers: zinovy.nis, hfinkel, baldrick, llvm-commits

Differential Revision: http://reviews.llvm.org/D4659

llvm-svn: 216299

2014-08-22 22:45:57 +00:00

..

address-spaces.ll

[SROA] Teach SROA how to handle pointers from address spaces other than

2014-02-26 08:25:02 +00:00

alignment.ll

Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.

2013-07-14 01:42:54 +00:00

basictest.ll

[SROA] Use the correct index integer size in GEPs through non-default

2014-02-26 10:08:16 +00:00

big-endian.ll

Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.

2013-07-14 01:42:54 +00:00

fca.ll

Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.

2013-07-14 01:42:54 +00:00

phi-and-select.ll

[SROA] Fold a PHI node if all its incoming values are the same

2014-08-22 22:45:57 +00:00

slice-order-independence.ll

SROA: Only split loads on byte boundaries

2014-06-17 00:19:35 +00:00

slice-width.ll

SROA: Handle a case of store size being smaller than allocation size

2014-08-22 00:09:56 +00:00

vector-conversion.ll

SROA: Handle casts involving vectors of pointers and integer scalars.

2013-09-21 20:36:04 +00:00

vector-lifetime-intrinsic.ll

Fix a case in SROA where lifetime intrinsics could inhibit alloca promotion. In

2014-08-07 21:07:35 +00:00

vector-promotion.ll

[SROA] Teach SROA how to handle pointers from address spaces other than

2014-02-26 08:25:02 +00:00

vectors-of-pointers.ll

Rename the test so that we can add additional vectors-of-pointers tests

2012-12-18 05:50:54 +00:00