[llvm] [InstCombine] Do not use operand info in `replaceInInstruction` (PR #99492)

[Yingwei Zheng via llvm-commits]

================
@@ -822,15 +822,25 @@ bool isSafeToSpeculativelyExecute(const Instruction *I,
                                   const Instruction *CtxI = nullptr,
                                   AssumptionCache *AC = nullptr,
                                   const DominatorTree *DT = nullptr,
-                                  const TargetLibraryInfo *TLI = nullptr);
+                                  const TargetLibraryInfo *TLI = nullptr,
+                                  bool UseOperandInfo = true);
+
+inline bool isSafeToSpeculativelyExecute(const Instruction *I,
+                                         BasicBlock::iterator CtxI,
+                                         AssumptionCache *AC = nullptr,
+                                         const DominatorTree *DT = nullptr,
+                                         const TargetLibraryInfo *TLI = nullptr,
+                                         bool UseOperandInfo = true) {
+  // Take an iterator, and unwrap it into an Instruction *.
+  return isSafeToSpeculativelyExecute(I, &*CtxI, AC, DT, TLI, UseOperandInfo);
+}
 
+/// Don't use information from its non-constant operands. This helper is used
+/// when its operands are going to be replaced.
 inline bool
-isSafeToSpeculativelyExecute(const Instruction *I, BasicBlock::iterator CtxI,
-                             AssumptionCache *AC = nullptr,
-                             const DominatorTree *DT = nullptr,
-                             const TargetLibraryInfo *TLI = nullptr) {
-  // Take an iterator, and unwrap it into an Instruction *.
-  return isSafeToSpeculativelyExecute(I, &*CtxI, AC, DT, TLI);
+isSafeToSpeculativelyExecuteWithOperandsReplaced(const Instruction *I) {
+  return isSafeToSpeculativelyExecute(I, nullptr, nullptr, nullptr, nullptr,
+                                      /*UseOperandInfo=*/false);
----------------
dtcxzyw wrote:

```suggestion
                                      /*UseVariableInfo=*/false);
```

https://github.com/llvm/llvm-project/pull/99492