llvm-project

Commit Graph

Author	SHA1	Message	Date
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

Author

SHA1

Message

Date

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

3 Commits