[llvm] [DSE] Fold small malloc + zero-store into calloc (PR #106069)
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Mon Aug 26 06:16:06 PDT 2024
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git-clang-format --diff 5afd39d6e4df7e1f4f8c6f7bb6e2cda775beed6a 92ad678c01e2e4900aed0a10fcfd4575440dbba2 --extensions cpp -- llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp
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View the diff from clang-format here.
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diff --git a/llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp b/llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp
index 4d27103076..634be9f0a4 100644
--- a/llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp
+++ b/llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp
@@ -1885,8 +1885,7 @@ struct DSEState {
auto shouldCreateCalloc = [](CallInst *Malloc, Instruction *MI) {
// Check for br(icmp ptr, null), truebb, falsebb) pattern at the end
// of malloc block
- auto *MallocBB = Malloc->getParent(),
- *MemsetBB = MI->getParent();
+ auto *MallocBB = Malloc->getParent(), *MemsetBB = MI->getParent();
if (MallocBB == MemsetBB)
return true;
auto *Ptr = dyn_cast<CallInst>(MI)
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https://github.com/llvm/llvm-project/pull/106069
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