bcm5719-llvm/llvm/test/Transforms/StraightLineStrengthReduce/X86, branch meklort-10.0.1

Revert "Temporarily Revert "Add basic loop fusion pass.""

2019-04-17T04:52:47+00:00

The reversion apparently deleted the test/Transforms directory. Will be re-reverting again. llvm-svn: 358552

Temporarily Revert "Add basic loop fusion pass."

2019-04-17T02:12:23+00:00

As it's causing some bot failures (and per request from kbarton). This reverts commit r358543/ab70da07286e618016e78247e4a24fcb84077fda. llvm-svn: 358546

[SLSR] garbage-collect unused instructions

2015-04-21T19:56:18+00:00

Summary: After we rewrite a candidate, the instructions used by the old form may become unused. This patch cleans up these unused instructions so that we needn't run DCE after SLSR. Test Plan: removed -dce in all the SLSR tests Reviewers: broune, meheff Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D9101 llvm-svn: 235410

[SLSR] handle candidate form (B + i * S)

2015-04-15T16:46:13+00:00

Summary: With this patch, SLSR may rewrite S1: X = B + i * S S2: Y = B + i' * S to S2: Y = X + (i' - i) * S A secondary improvement: if (i' - i) is a power of 2, emit Y as X + (S << log(i' - i)). (S << log(i' -i)) is in a canonical form and thus more likely GVN'ed than (i' - i) * S. Test Plan: slsr-add.ll Reviewers: hfinkel, sanjoy, meheff, broune, eliben Reviewed By: eliben Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D8983 llvm-svn: 235019

[SLSR] handle candidate form &B[i * S]

2015-03-26T16:49:24+00:00

Summary: This patch enhances SLSR to handle another candidate form &B[i * S]. If we found two candidates S1: X = &B[i * S] S2: Y = &B[i' * S] and S1 dominates S2, we can replace S2 with Y = &X[(i' - i) * S] Test Plan: slsr-gep.ll X86/no-slsr.ll: verify that we do not run SLSR on GEPs that already fit into an addressing mode Reviewers: eliben, atrick, meheff, hfinkel Reviewed By: hfinkel Subscribers: sanjoy, llvm-commits Differential Revision: http://reviews.llvm.org/D7459 llvm-svn: 233286