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10 Commits

Author SHA1 Message Date
Nikita Popov
07b9d231ff [SimplifyCFG] Regenerate test checks (NFC) 
The output for many of these slightly changed (mainly due to
switch indentation), so mass-regenerate them.
 2024-06-05 17:06:25 +02:00
Nikita Popov
bb3763e497 Revert "[SimplifyCFG] Allow dropping block that only contains ephemeral values" 
This reverts commit 20f0c68fd83a0147a8ec1722bd2e848180610288.

https://reviews.llvm.org/D153966#4464594 reports an optimization
regression in Rust.

Additionally this change has caused an unexpected 0.3% compile-time
regression.
 2023-06-30 21:24:05 +02:00
Nikita Popov
20f0c68fd8 [SimplifyCFG] Allow dropping block that only contains ephemeral values 
Perform the TryToSimplifyUncondBranchFromEmptyBlock() transform if
the block is empty except for ephemeral values. The ephemeral values
will be dropped in that case.

This makes sure that assumes don't block this transforms, as reported
in https://discourse.llvm.org/t/llvm-assume-blocks-optimization/71609.

Differential Revision: https://reviews.llvm.org/D153966
 2023-06-30 15:24:01 +02:00
Nikita Popov
8979ae4276 [SimplifyCFG] Convert tests to opaque pointers (NFC) 2022-12-14 15:14:12 +01:00
Roman Lebedev
d1d1293569
[NFC] Port all runlines for SimplifyCFG pass tests to -passes syntax 2022-12-05 21:12:20 +03:00
Florian Hahn
b8d728a098
[SimplifyCFG,EarlyCSE] Update 2 tests to not branch on undef (NFC). 2022-06-12 18:03:26 +01:00
Roman Lebedev
aa2009fe78
[NFCI][SimplifyCFG] Mark all the SimplifyCFG tests that already don't invalidate DomTree as such 
First step after e1133179587dd895962a2fe4d6eb0cb1e63b5ee2,
in these tests, DomTree is valid afterwards, so mark them as such,
so that they don't regress.

In further steps, SimplifyCFG transforms shall taught to preserve DomTree,
in as small steps as possible.
 2020-12-17 01:03:49 +03:00
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
Davide Italiano
c36039f462 [TTI] Fix getGEPCost() for geps with a single operand. 
Previously this would sporadically crash as TargetType
was never initialized. We special-case the single-operand
case returning earlier and trying to mimic the behaviour of
isLegalAddressingMode as closely as possible.

Differential Revision:  https://reviews.llvm.org/D37277

llvm-svn: 312357
 2017-09-01 19:54:08 +00:00