From df4c121759d809d87ab83c84a143e0b266774b68 Mon Sep 17 00:00:00 2001
From: Kazu Hirata <kazu@google.com>
Date: Mon, 14 Oct 2024 23:09:28 -0700
Subject: [PATCH] [AMDGPU] Avoid repeated hash lookups (NFC) (#112309)

---
 llvm/lib/Target/AMDGPU/SIOptimizeVGPRLiveRange.cpp | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/llvm/lib/Target/AMDGPU/SIOptimizeVGPRLiveRange.cpp b/llvm/lib/Target/AMDGPU/SIOptimizeVGPRLiveRange.cpp
index 50f536c532afc7d..162270524263cd0 100644
--- a/llvm/lib/Target/AMDGPU/SIOptimizeVGPRLiveRange.cpp
+++ b/llvm/lib/Target/AMDGPU/SIOptimizeVGPRLiveRange.cpp
@@ -189,7 +189,7 @@ void SIOptimizeVGPRLiveRange::collectElseRegionBlocks(
   unsigned Cur = 0;
   while (MBB) {
     for (auto *Pred : MBB->predecessors()) {
-      if (Pred != Flow && !Blocks.contains(Pred))
+      if (Pred != Flow)
         Blocks.insert(Pred);
     }
 
@@ -407,10 +407,8 @@ void SIOptimizeVGPRLiveRange::updateLiveRangeInThenRegion(
   while (!WorkList.empty()) {
     auto *MBB = WorkList.pop_back_val();
     for (auto *Succ : MBB->successors()) {
-      if (Succ != Flow && !Blocks.contains(Succ)) {
+      if (Succ != Flow && Blocks.insert(Succ))
         WorkList.push_back(Succ);
-        Blocks.insert(Succ);
-      }
     }
   }