HomePhabricator

[X86] Improve use of SHLD/SHRD

Description

[X86] Improve use of SHLD/SHRD

Summary:
This extends the variety of pattern that can generate a SHLD instead of using two shifts.

This fixes a regression that would be introduced by D57367 or D33587

Reviewers: RKSimon, craig.topper

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D57389

Details

Committed
deadalnixMar 1 2019, 6:44 PM
Differential Revision
D57389: [X86] Improve use of SHLD/SHRD
Parents
rL355259: [SCEV] Handle case where MaxBECount is less precise than ExactBECount for OR.
Branches
Unknown
Tags
Unknown