[llvm] [Coroutines] Conditional elide coroutines based on hot/cold information (PR #162276)

[via llvm-commits]

github-actions[bot] wrote:

<!--LLVM CODE FORMAT COMMENT: {clang-format}-->


:warning: C/C++ code formatter, clang-format found issues in your code. :warning:

<details>
<summary>
You can test this locally with the following command:
</summary>

``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp,h -- llvm/include/llvm/IR/DiagnosticInfo.h llvm/lib/IR/DiagnosticInfo.cpp llvm/lib/Transforms/Coroutines/CoroAnnotationElide.cpp llvm/lib/Transforms/IPO/PartialInlining.cpp
``````````

:warning:
The reproduction instructions above might return results for more than one PR
in a stack if you are using a stacked PR workflow. You can limit the results by
changing `origin/main` to the base branch/commit you want to compare against.
:warning:

</details>

<details>
<summary>
View the diff from clang-format here.
</summary>

``````````diff
diff --git a/llvm/lib/IR/DiagnosticInfo.cpp b/llvm/lib/IR/DiagnosticInfo.cpp
index 44574362e..8e6d654f6 100644
--- a/llvm/lib/IR/DiagnosticInfo.cpp
+++ b/llvm/lib/IR/DiagnosticInfo.cpp
@@ -275,7 +275,7 @@ DiagnosticInfoOptimizationBase::Argument::Argument(StringRef Key,
 
 DiagnosticInfoOptimizationBase::Argument::Argument(StringRef Key,
                                                    BranchProbability P)
-: Key(std::string(Key)) {
+    : Key(std::string(Key)) {
   raw_string_ostream OS(Val);
   P.print(OS);
 }
diff --git a/llvm/lib/Transforms/Coroutines/CoroAnnotationElide.cpp b/llvm/lib/Transforms/Coroutines/CoroAnnotationElide.cpp
index 6cbda6b38..120ffc489 100644
--- a/llvm/lib/Transforms/Coroutines/CoroAnnotationElide.cpp
+++ b/llvm/lib/Transforms/Coroutines/CoroAnnotationElide.cpp
@@ -154,8 +154,8 @@ PreservedAnalyses CoroAnnotationElidePass::run(LazyCallGraph::SCC &C,
       bool HasAttr = CB->hasFnAttr(llvm::Attribute::CoroElideSafe);
       if (IsCallerPresplitCoroutine && HasAttr) {
         static BranchProbability MinBranchProbability(
-          static_cast<int>(CoroElideBranchRatio * MinBlockCounterExecution),
-          MinBlockCounterExecution);
+            static_cast<int>(CoroElideBranchRatio * MinBlockCounterExecution),
+            MinBlockCounterExecution);
 
         auto &BFI = FAM.getResult<BlockFrequencyAnalysis>(*Caller);
 
@@ -165,11 +165,14 @@ PreservedAnalyses CoroAnnotationElidePass::run(LazyCallGraph::SCC &C,
 
         if (Prob < MinBranchProbability) {
           ORE.emit([&]() {
-            return OptimizationRemarkMissed(DEBUG_TYPE, "CoroAnnotationElideUnlikely", Caller)
-                  << "'" << ore::NV("callee", Callee->getName())
-                  << "' not elided in '" << ore::NV("caller", Caller->getName())
-                  << "' because of low probability: " << ore::NV("probability", Prob)
-                  << " (threshold: " << ore::NV("threshold", MinBranchProbability) << ")";
+            return OptimizationRemarkMissed(
+                       DEBUG_TYPE, "CoroAnnotationElideUnlikely", Caller)
+                   << "'" << ore::NV("callee", Callee->getName())
+                   << "' not elided in '"
+                   << ore::NV("caller", Caller->getName())
+                   << "' because of low probability: "
+                   << ore::NV("probability", Prob) << " (threshold: "
+                   << ore::NV("threshold", MinBranchProbability) << ")";
           });
           continue;
         }

``````````

</details>


https://github.com/llvm/llvm-project/pull/162276