[llvm] [memprof] Use a lambda instead of std::bind (NFC) (PR #144940)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-pgo

Author: Kazu Hirata (kazutakahirata)

<details>
<summary>Changes</summary>

A lambda is a lot shorter than std::bind here.


---
Full diff: https://github.com/llvm/llvm-project/pull/144940.diff


1 Files Affected:

- (modified) llvm/include/llvm/ProfileData/MemProfReader.h (+1-2) 


``````````diff
diff --git a/llvm/include/llvm/ProfileData/MemProfReader.h b/llvm/include/llvm/ProfileData/MemProfReader.h
index 4d41d05b1457c..25578ecd06f12 100644
--- a/llvm/include/llvm/ProfileData/MemProfReader.h
+++ b/llvm/include/llvm/ProfileData/MemProfReader.h
@@ -62,8 +62,7 @@ class MemProfReader {
       return make_error<InstrProfError>(instrprof_error::eof);
 
     if (Callback == nullptr)
-      Callback =
-          std::bind(&MemProfReader::idToFrame, this, std::placeholders::_1);
+      Callback = [&](FrameId Id) { return idToFrame(Id); };
 
     CallStackIdConverter<decltype(MemProfData.CallStacks)> CSIdConv(
         MemProfData.CallStacks, Callback);

``````````

</details>


https://github.com/llvm/llvm-project/pull/144940