[llvm] [ProfileData] Clean up validateRecord (PR #95488)

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llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-pgo

Author: Kazu Hirata (kazutakahirata)

<details>
<summary>Changes</summary>

validateRecord ensures that all the values are unique except for
IPVK_IndirectCallTarget and IPVK_VTableTarget.  The problem is that we
exclude them in the innermost loop.

This patch pulls the loop invariant out of the loop.  While I am at
it, this patch migrates a use of getValueForSite to
getValueArrayForSite.

---
Full diff: https://github.com/llvm/llvm-project/pull/95488.diff


1 Files Affected:

- (modified) llvm/lib/ProfileData/InstrProfWriter.cpp (+4-7) 


``````````diff
diff --git a/llvm/lib/ProfileData/InstrProfWriter.cpp b/llvm/lib/ProfileData/InstrProfWriter.cpp
index 1a9add109a360..e4e3350070e7d 100644
--- a/llvm/lib/ProfileData/InstrProfWriter.cpp
+++ b/llvm/lib/ProfileData/InstrProfWriter.cpp
@@ -1035,16 +1035,13 @@ static const char *ValueProfKindStr[] = {
 
 Error InstrProfWriter::validateRecord(const InstrProfRecord &Func) {
   for (uint32_t VK = 0; VK <= IPVK_Last; VK++) {
-    uint32_t NS = Func.getNumValueSites(VK);
-    if (!NS)
+    if (VK == IPVK_IndirectCallTarget || VK == IPVK_VTableTarget)
       continue;
+    uint32_t NS = Func.getNumValueSites(VK);
     for (uint32_t S = 0; S < NS; S++) {
-      uint32_t ND = Func.getNumValueDataForSite(VK, S);
-      std::unique_ptr<InstrProfValueData[]> VD = Func.getValueForSite(VK, S);
       DenseSet<uint64_t> SeenValues;
-      for (uint32_t I = 0; I < ND; I++)
-        if ((VK != IPVK_IndirectCallTarget && VK != IPVK_VTableTarget) &&
-            !SeenValues.insert(VD[I].Value).second)
+      for (const auto &V : Func.getValueArrayForSite(VK, S))
+        if (!SeenValues.insert(V.Value).second)
           return make_error<InstrProfError>(instrprof_error::invalid_prof);
     }
   }

``````````

</details>


https://github.com/llvm/llvm-project/pull/95488