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Author SHA1 Message Date
Sanjay Patel b32e4664a7 [ConstantFold] fix inconsistent handling of extractelement with undef index (PR42689) 
Any constant other than zero was already folded to undef if the index is undef.
https://bugs.llvm.org/show_bug.cgi?id=42689

llvm-svn: 374729
 2019-10-13 17:34:08 +00:00
Sanjay Patel 232b9dc46a [ConstProp] add tests for extractelement with undef index; NFC 
llvm-svn: 374210
 2019-10-09 20:14:17 +00:00
Eric Christopher cee313d288 Revert "Temporarily Revert "Add basic loop fusion pass."" 
The reversion apparently deleted the test/Transforms directory.

Will be re-reverting again.

llvm-svn: 358552
 2019-04-17 04:52:47 +00:00
Eric Christopher a863435128 Temporarily Revert "Add basic loop fusion pass." 
As it's causing some bot failures (and per request from kbarton).

This reverts commit r358543/ab70da07286e618016e78247e4a24fcb84077fda.

llvm-svn: 358546
 2019-04-17 02:12:23 +00:00
Pawel Bylica c25918a043 Constfold insertelement to undef when index is out-of-bounds 
Summary:
This patch adds constant folding of insertelement instruction to undef value when index operand is constant and is not less than vector size or is undef.

InstCombine does not support this case, but I'm happy to add it there also if this change is accepted.

Test Plan: Unittests and regression tests for ConstProp pass.

Reviewers: majnemer

Reviewed By: majnemer

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D9287

llvm-svn: 235854
 2015-04-27 09:30:49 +00:00
Rafael Espindola 8c97e19124 Avoid conversion to float when creating ConstantDataArray/ConstantDataVector. 
Patch by Raoux, Thomas F!

llvm-svn: 229864
 2015-02-19 16:08:20 +00:00