[PATCH] D77891: [CallSite Removal][CodeGenPrepare] permit optimizations for CallBrInst

[Nick Desaulniers via Phabricator via llvm-commits]

nickdesaulniers added inline comments.


================
Comment at: llvm/lib/CodeGen/CodeGenPrepare.cpp:1892
   // lower it to normal LLVM code, do so now.
-  if (isa<InlineAsm>(CI->getCalledValue())) {
-    if (TLI->ExpandInlineAsm(CI)) {
-      // Avoid invalidating the iterator.
-      CurInstIterator = BB->begin();
-      // Avoid processing instructions out of order, which could cause
-      // reuse before a value is defined.
-      SunkAddrs.clear();
-      return true;
+  if (CallInst *CI = dyn_cast<CallInst>(CB))
+    if (isa<InlineAsm>(CI->getCalledValue())) {
----------------
craig.topper wrote:
> Why is this CallInst?
The call below to `TLI->ExpandInlineAsm(CI)` requires a `CallInst`.

The added `dyn_cast<CallInst>` in the patch are what I want to remove.  That will require fixing up similar interface issues in `FortifiedLibCallSimplifier` and `TargetLoweringInfo`.

Should I shave those yaks in this one change, or submit this first separately, then rebase+revist this one?  (Then I can drop my added `dyn_cast`).


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D77891/new/

https://reviews.llvm.org/D77891