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Bjorn Pettersson 6b2e39a77a [LCSSA] Do not remove used PHI nodes in formLCSSAForInstructions
Summary:
In formLCSSAForInstructions we speculatively add new PHI
nodes, that sometimes ends up without having any uses. It
has been discovered that sometimes an added PHI node can
appear as being unused in one iteration of the Worklist,
although it can end up being used by a PHI node added in
a later iteration. We now check, a second time, that the
PHI node still is unused before we remove it. This avoids
an assert about "Trying to remove a phi with uses." for the
added test case.

Reviewers: davide, mzolotukhin, mattd, dberlin

Reviewed By: mzolotukhin, dberlin

Subscribers: dberlin, mzolotukhin, davide, bjope, uabelho, llvm-commits

Differential Revision: https://reviews.llvm.org/D46422

llvm-svn: 331741
2018-05-08 06:59:47 +00:00
bindings [bindings/go] Add Go bindings for volatile loads/stores 2018-05-04 15:14:00 +00:00
cmake Revert r330742: Let TableGen write output only if it changed, instead of doing so in cmake. 2018-05-07 23:41:48 +00:00
docs [XRay][compiler-rt+docs] Introduce __xray_log_init_mode(...). 2018-05-04 06:01:12 +00:00
examples s/LLVM_ON_WIN32/_WIN32/, llvm 2018-04-29 00:45:03 +00:00
include [MachineVerifier][GlobalISel] NFC, Improving MO printing and refactoring visitMachineInstrBefore 2018-05-07 22:31:12 +00:00
lib [LCSSA] Do not remove used PHI nodes in formLCSSAForInstructions 2018-05-08 06:59:47 +00:00
projects [cmake] Support moving debuginfo-tests to llvm/projects 2017-12-12 17:06:08 +00:00
resources
runtimes [CMake] Enable warnings for runtimes 2018-04-27 15:10:50 +00:00
test [LCSSA] Do not remove used PHI nodes in formLCSSAForInstructions 2018-05-08 06:59:47 +00:00
tools [DebugInfo] Accept S in augmentation strings in CIE. 2018-05-08 06:21:12 +00:00
unittests Re-land r331622 "[llvm-exegesis] Add a library to cluster benchmark results." 2018-05-07 09:09:48 +00:00
utils [globalisel] Update GlobalISel emitter to match new representation of extending loads 2018-05-05 20:53:24 +00:00
.arcconfig [llvm] Set up .arcconfig to point to Diffusion L repository 2018-01-12 15:37:41 +00:00
.clang-format
.clang-tidy
.gitattributes [MC] Fix regression tests on Windows when git “core.autocrlf” is set to true. 2017-11-17 21:59:43 +00:00
.gitignore
CMakeLists.txt Remove LLVM_INSTALL_CCTOOLS_SYMLINKS 2018-04-24 15:41:02 +00:00
CODE_OWNERS.TXT [CODE_OWNERS] Update my email address. 2018-04-23 19:09:49 +00:00
configure
CREDITS.TXT Update my email address and description. 2018-04-29 01:13:57 +00:00
LICENSE.TXT
llvm.spec.in
LLVMBuild.txt
README.txt Test commit access 2017-08-18 02:39:28 +00:00
RELEASE_TESTERS.TXT Update my email addresses, NFC. 2017-10-26 10:16:54 +00:00

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