llvm-project

Author	SHA1	Message	Date
David Blaikie	7883340331	Remove unused header to fix layering. llvm-svn: 328842	2018-03-29 22:35:59 +00:00
Amjad Aboud	d895bff5f2	[AggressiveInstCombine] Make TruncCombine class ignore unreachable basic blocks. Because dead code may contain non-standard IR that causes infinite looping or crashes in underlying analysis. See PR36134 for more details. Differential Revision: https://reviews.llvm.org/D42683 llvm-svn: 323862	2018-01-31 10:41:31 +00:00
Amjad Aboud	f1f57a3137	Another try to commit 323321 (aggressive instruction combine). llvm-svn: 323416	2018-01-25 12:06:32 +00:00
Amjad Aboud	d53504e379	Reverted 323321. llvm-svn: 323326	2018-01-24 14:48:49 +00:00
Amjad Aboud	e4453233d7	[InstCombine] Introducing Aggressive Instruction Combine pass (-aggressive-instcombine). Combine expression patterns to form expressions with fewer, simple instructions. This pass does not modify the CFG. For example, this pass reduce width of expressions post-dominated by TruncInst into smaller width when applicable. It differs from instcombine pass in that it contains pattern optimization that requires higher complexity than the O(1), thus, it should run fewer times than instcombine pass. Differential Revision: https://reviews.llvm.org/D38313 llvm-svn: 323321	2018-01-24 12:42:42 +00:00