[llvm] [AMDGPU][TTI] Add Target Hook for Instruction Uniformity (getInstructionUniformity) (PR #137639)

[Pankaj Dwivedi via llvm-commits]

https://github.com/PankajDwivedi-25 updated https://github.com/llvm/llvm-project/pull/137639

>From 860b4859812c20b03e47e7eb25a9999188558c30 Mon Sep 17 00:00:00 2001
From: Pankaj kumar divedi <Pankajkumar.divedi at amd.com>
Date: Tue, 23 Sep 2025 17:25:29 +0530
Subject: [PATCH] [NFC] move isDivergentUse so later dependent function in
 pushUsers can safely use it

---
 llvm/lib/Analysis/UniformityAnalysis.cpp | 26 ++++++++++++------------
 1 file changed, 13 insertions(+), 13 deletions(-)

diff --git a/llvm/lib/Analysis/UniformityAnalysis.cpp b/llvm/lib/Analysis/UniformityAnalysis.cpp
index 2101fdfacfc8f..a4a68bb2a0753 100644
--- a/llvm/lib/Analysis/UniformityAnalysis.cpp
+++ b/llvm/lib/Analysis/UniformityAnalysis.cpp
@@ -29,6 +29,19 @@ bool llvm::GenericUniformityAnalysisImpl<SSAContext>::markDefsDivergent(
   return markDivergent(cast<Value>(&Instr));
 }
 
+template <>
+bool llvm::GenericUniformityAnalysisImpl<SSAContext>::isDivergentUse(
+    const Use &U) const {
+  const auto *V = U.get();
+  if (isDivergent(V))
+    return true;
+  if (const auto *DefInstr = dyn_cast<Instruction>(V)) {
+    const auto *UseInstr = cast<Instruction>(U.getUser());
+    return isTemporalDivergent(*UseInstr->getParent(), *DefInstr);
+  }
+  return false;
+}
+
 template <> void llvm::GenericUniformityAnalysisImpl<SSAContext>::initialize() {
   for (auto &I : instructions(F)) {
     if (TTI->isSourceOfDivergence(&I))
@@ -88,19 +101,6 @@ void llvm::GenericUniformityAnalysisImpl<
   }
 }
 
-template <>
-bool llvm::GenericUniformityAnalysisImpl<SSAContext>::isDivergentUse(
-    const Use &U) const {
-  const auto *V = U.get();
-  if (isDivergent(V))
-    return true;
-  if (const auto *DefInstr = dyn_cast<Instruction>(V)) {
-    const auto *UseInstr = cast<Instruction>(U.getUser());
-    return isTemporalDivergent(*UseInstr->getParent(), *DefInstr);
-  }
-  return false;
-}
-
 // This ensures explicit instantiation of
 // GenericUniformityAnalysisImpl::ImplDeleter::operator()
 template class llvm::GenericUniformityInfo<SSAContext>;