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19 Commits

Author SHA1 Message Date
Clement Courbet 43882b16a3 [MergeICmps] Make the pass compatible with the new pass manager. 
Reviewers: gchatelet, spatel

Subscribers: hiraditya, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D62287

llvm-svn: 361490
 2019-05-23 12:35:26 +00:00
Clement Courbet a95d95d392 [MergeICmps] Preserve the dominator tree. 
Summary: In preparation for D60318 .

Reviewers: gchatelet, efriedma

Subscribers: hiraditya, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D62068

llvm-svn: 361239
 2019-05-21 11:02:23 +00:00
Clement Courbet 632dfdda16 Re-land r360859: "[MergeICmps] Simplify the code." 
With a fix for PR41917: The predecessor list was changing under our feet.

-  for (BasicBlock *Pred : predecessors(EntryBlock_)) {
+  while (!pred_empty(EntryBlock_)) {
+    BasicBlock* const Pred = *pred_begin(EntryBlock_);

llvm-svn: 361009
 2019-05-17 09:43:45 +00:00
Nico Weber d764e7c660 Revert r360859: "Reland r360771 "[MergeICmps] Simplify the code."" 
It caused PR41917.

llvm-svn: 360963
 2019-05-17 00:43:53 +00:00
Clement Courbet c4fdd717ef Reland r360771 "[MergeICmps] Simplify the code." 
This revision does not seem to be the culprit.

llvm-svn: 360859
 2019-05-16 06:18:02 +00:00
Clement Courbet eaf4413d2d Revert r360771 "[MergeICmps] Simplify the code." 
Breaks a bunch of builbdots.

llvm-svn: 360776
 2019-05-15 14:21:59 +00:00
Clement Courbet 157ae639fa [MergeICmps] Simplify the code. 
Instead of patching the original blocks, we now generate new blocks and
delete the old blocks. This results in simpler code with a less twisted
control flow (see the change in `entry-block-shuffled.ll`).

This will make https://reviews.llvm.org/D60318 simpler by making it more
obvious where control flow created and deleted.

Reviewers: gchatelet

Subscribers: hiraditya, llvm-commits, spatel

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D61736

llvm-svn: 360771
 2019-05-15 13:04:24 +00:00
Clement Courbet fa18e6b080 [MergeICmps][NFC] Re-generate tests with update_test_checks. 
And use a more compact name for the tested struct.

llvm-svn: 360319
 2019-05-09 08:37:58 +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
Benjamin Kramer a76b64ff80 [MergeICmps] Don't crash when memcmp is not available 
Fixes clang crashing with -fno-builtin, PR37527.

llvm-svn: 332808
 2018-05-19 12:51:59 +00:00
Xin Tong bdbd97ed9a [MergeICmp] Fix a bug in entry block shuffled to middle of the chain 
Summary: Fix a bug in entry block shuffled to middle of the chain.

Reviewers: davide, courbet

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D44642

llvm-svn: 327971
 2018-03-20 11:57:54 +00:00
Clement Courbet e2e8a5c496 Re-land "[MergeICmps] Disable mergeicmps if the target does not want to handle memcmp expansion." 
(fixed stability issues)

This reverts commit d6492333d3b478a1d88163315002022f8d5e58dc.

llvm-svn: 315281
 2017-10-10 08:00:45 +00:00
Clement Courbet d12c189e2e Revert "[MergeICmps] Disable mergeicmps if the target does not want to handle memcmp expansion." 
Still a few stability issues on windows.

This reverts commit 67e3db9bc121ba244e20337aabc7cf341a62b545.

llvm-svn: 315058
 2017-10-06 13:02:24 +00:00
Clement Courbet 4e1bae8136 Re-land "[MergeICmps] Disable mergeicmps if the target does not want to handle memcmp expansion." 
(fixed unit tests by making comparisons stable)

This reverts commit 1b2d359ce256fd6737da4e93833346a0bd6d7583.

llvm-svn: 315056
 2017-10-06 12:12:35 +00:00
Clement Courbet 922e5bc698 Revert "Re-land "[MergeICmps] Disable mergeicmps if the target does not want to handle memcmp expansion.""" 
broken test on windows

This reverts commit c91479518344fd1fc071c5bd5848f6eb83e53dca.

llvm-svn: 314985
 2017-10-05 14:42:06 +00:00
Clement Courbet 4cafbb9b5e Re-land "[MergeICmps] Disable mergeicmps if the target does not want to handle memcmp expansion."" 
llvm-svn: 314980
 2017-10-05 12:39:57 +00:00
Clement Courbet 6603fc0e7b Revert "[MergeICmps] Disable mergeicmps if the target does not want to handle memcmp expansion." 
Breaks
clang-stage1-cmake-RA-incremental/llvm/test/Transforms/MergeICmps/X86/tuple-four-int8.ll

This reverts commit 3038c459d67f8898ffa295d54a013b280690abfa.

llvm-svn: 314972
 2017-10-05 08:03:39 +00:00
Clement Courbet 902eef32eb [MergeICmps] Disable mergeicmps if the target does not want to handle memcmp expansion. 
Summary: This is to avoid e.g. merging two cheap icmps if the target is not going to expand to something nice later.

Reviewers: dberlin, spatel

Subscribers: davide, nemanjai

Differential Revision: https://reviews.llvm.org/D38232

llvm-svn: 314970
 2017-10-05 07:49:09 +00:00