[llvm] [Loads] Const correct the Size argument to isSafeToLoadUnconditionally. NFC (PR #96993)

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llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-llvm-analysis

Author: Craig Topper (topperc)

<details>
<summary>Changes</summary>

The APInt is not modified so we should pass by const reference.

---
Full diff: https://github.com/llvm/llvm-project/pull/96993.diff


2 Files Affected:

- (modified) llvm/include/llvm/Analysis/Loads.h (+1-1) 
- (modified) llvm/lib/Analysis/Loads.cpp (+1-1) 


``````````diff
diff --git a/llvm/include/llvm/Analysis/Loads.h b/llvm/include/llvm/Analysis/Loads.h
index a8d954b9872d9..6da1c5596b10e 100644
--- a/llvm/include/llvm/Analysis/Loads.h
+++ b/llvm/include/llvm/Analysis/Loads.h
@@ -68,7 +68,7 @@ bool isDereferenceableAndAlignedPointer(const Value *V, Align Alignment,
 /// If it is not obviously safe to load from the specified pointer, we do a
 /// quick local scan of the basic block containing ScanFrom, to determine if
 /// the address is already accessed.
-bool isSafeToLoadUnconditionally(Value *V, Align Alignment, APInt &Size,
+bool isSafeToLoadUnconditionally(Value *V, Align Alignment, const APInt &Size,
                                  const DataLayout &DL,
                                  Instruction *ScanFrom = nullptr,
                                  AssumptionCache *AC = nullptr,
diff --git a/llvm/lib/Analysis/Loads.cpp b/llvm/lib/Analysis/Loads.cpp
index b2eb5a96d7d93..1d54a66705a2a 100644
--- a/llvm/lib/Analysis/Loads.cpp
+++ b/llvm/lib/Analysis/Loads.cpp
@@ -349,7 +349,7 @@ bool llvm::isDereferenceableAndAlignedInLoop(LoadInst *LI, Loop *L,
 ///
 /// This uses the pointee type to determine how many bytes need to be safe to
 /// load from the pointer.
-bool llvm::isSafeToLoadUnconditionally(Value *V, Align Alignment, APInt &Size,
+bool llvm::isSafeToLoadUnconditionally(Value *V, Align Alignment, const APInt &Size,
                                        const DataLayout &DL,
                                        Instruction *ScanFrom,
                                        AssumptionCache *AC,

``````````

</details>


https://github.com/llvm/llvm-project/pull/96993