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Author SHA1 Message Date
Bjorn Pettersson 3f8027fb67 [test] Update some test cases to use -passes when specifying the pipeline 
This updates transform test cases for
  ADCE
  AddDiscriminators
  AggressiveInstCombine
  AlignmentFromAssumptions
  ArgumentPromotion
  BDCE
  CalledValuePropagation
  DCE
  Reg2Mem
  WholeProgramDevirt
to use the -passes syntax when specifying the pipeline.

Given that LLVM_ENABLE_NEW_PASS_MANAGER isn't set to off (which is
a deprecated feature) the updated test cases already used the new
pass manager, but they were using the legacy syntax when specifying
the passes to run. This patch can be seen as a step toward deprecating
that interface.

This patch also removes some redundant RUN lines. Here I am
referring to test cases that had multiple RUN lines verifying both
the legacy "-passname" syntax and the new "-passes=passname" syntax.
Since we switched the default pass manager to "new PM" both RUN lines
have verified the new PM version of the pass (more or less wasting
time running the same test twice), unless LLVM_ENABLE_NEW_PASS_MANAGER
is set to "off". It is assumed that it is enough to run these tests
with the new pass manager now.

Differential Revision: https://reviews.llvm.org/D108472
 2021-09-29 21:51:08 +02:00
zoecarver f65f566aeb Re-commit: Mark values as trivially dead when their only use is a start or end lifetime intrinsic. 
Summary:
If the only use of a value is a start or end lifetime intrinsic then mark the intrinsic as trivially dead. This should allow for that value to then be removed as well.

Currently, this only works for allocas, globals, and arguments.

Subscribers: hiraditya, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D79355
 2020-05-08 12:24:10 -07:00
zoecarver 1998e796e9 Revert "Mark values as trivially dead when their only use is a start or end lifetime intrinsic." 
This reverts commit 95aa28cc8f.
 2020-05-06 11:07:22 -07:00
zoecarver 95aa28cc8f Mark values as trivially dead when their only use is a start or end lifetime intrinsic. 
Summary:
If the only use of a value is a start or end lifetime intrinsic then mark the intrinsic as trivially dead. This should allow for that value to then be removed as well.

Currently, this only works for allocas, globals, and arguments.

Subscribers: hiraditya, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D79355
 2020-05-06 10:58:08 -07:00
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
Vedant Kumar 1df820ecd7 [DCE] Salvage debug info from dead insts 
This results in small increases in the size of the .debug_loc section
and the number of unique source variables in a stage2 build of opt.

llvm-svn: 325301
 2018-02-15 22:26:18 +00:00
Justin Bogner 395c2127ed PM: Port DCE to the new pass manager 
Also add a very basic test, since apparently there aren't any tests
for DCE whatsoever to add the new pass version to.

llvm-svn: 267196
 2016-04-22 19:40:41 +00:00