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4 Commits

Author SHA1 Message Date
Mikhail Gudim
d37d4072f2 Reapply [SCCP] Constant propagation through freeze instruction 
Reapply with extra check for struct types, which caused buildbot
failures last time.

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The freeze instruction has not been handled by SCCPInstVisitor.
This patch adds SCCPInstVisitor::visitFreezeInst(FreezeInst &I)
method to handle freeze instructions.

Differential Revision: https://reviews.llvm.org/D151659
 2023-06-05 11:47:36 +02:00
Nikita Popov
223f9b096e Revert "[SCCP] Constant propagation through freeze instruction" 
This reverts commit 559d47a1790e1a9f9b1f8838a443eb7624ef1ac7.

Caused failure on sanitizer-aarch64-linux-bootstrap-ubsan:

    clang++: /b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/lib/Transforms/Utils/SCCPSolver.cpp:442: llvm::ValueLatticeElement &llvm::SCCPInstVisitor::getValueState(llvm::Value *): Assertion `!V->getType()->isStructTy() && "Should use getStructValueState"' failed.
 2023-06-01 15:30:46 +02:00
Mikhail Gudim
559d47a179 [SCCP] Constant propagation through freeze instruction 
The freeze instruction has not been handled by SCCPInstVisitor.
This patch adds SCCPInstVisitor::visitFreezeInst(FreezeInst &I)
method to handle freeze instructions.

Differential Revision: https://reviews.llvm.org/D151659
 2023-06-01 15:06:59 +02:00
Florian Hahn
b2a885a290
[SCCP] Add initial tests for freeze. 2022-04-23 12:09:29 +01:00