[llvm] [LSR] If there still has some uses of the value, do not set the value (PR #84777)
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Mon Mar 11 09:03:34 PDT 2024
llvmbot wrote:
<!--LLVM PR SUMMARY COMMENT-->
@llvm/pr-subscribers-llvm-transforms
Author: CL (coderchenlin)
<details>
<summary>Changes</summary>
with nullpter.
---
Full diff: https://github.com/llvm/llvm-project/pull/84777.diff
1 Files Affected:
- (modified) llvm/lib/Transforms/Utils/Local.cpp (+2-2)
``````````diff
diff --git a/llvm/lib/Transforms/Utils/Local.cpp b/llvm/lib/Transforms/Utils/Local.cpp
index d3bb89075015e9..2f97de6bb046e4 100644
--- a/llvm/lib/Transforms/Utils/Local.cpp
+++ b/llvm/lib/Transforms/Utils/Local.cpp
@@ -588,10 +588,10 @@ void llvm::RecursivelyDeleteTriviallyDeadInstructions(
// dead as we go.
for (Use &OpU : I->operands()) {
Value *OpV = OpU.get();
- OpU.set(nullptr);
-
if (!OpV->use_empty())
continue;
+
+ OpU.set(nullptr);
// If the operand is an instruction that became dead as we nulled out the
// operand, and if it is 'trivially' dead, delete it in a future loop
``````````
</details>
https://github.com/llvm/llvm-project/pull/84777
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