[AMDGPU] Avoid repeated hash lookups (NFC)

[kazutakahirata]

No description provided.

[llvmbot]

@llvm/pr-subscribers-backend-amdgpu

Author: Kazu Hirata (kazutakahirata)

Changes

---

Full diff: https://github.com/llvm/llvm-project/pull/112309.diff

1 Files Affected:

• (modified) llvm/lib/Target/AMDGPU/SIOptimizeVGPRLiveRange.cpp (+2-4)

diff --git a/llvm/lib/Target/AMDGPU/SIOptimizeVGPRLiveRange.cpp b/llvm/lib/Target/AMDGPU/SIOptimizeVGPRLiveRange.cpp
index 50f536c532afc7..162270524263cd 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);
-      }
     }
   }