[AMDGPUUnifyDivergentExitNodes] Fix changed flag for expensive checks.

ro-i · ro-i · commit b709ebeb2f39 · 2025-11-03T09:48:41.000-06:00
Adds forgotten flag update to #152161.
diff --git a/llvm/lib/Target/AMDGPU/AMDGPUUnifyDivergentExitNodes.cpp b/llvm/lib/Target/AMDGPU/AMDGPUUnifyDivergentExitNodes.cpp
@@ -279,6 +279,7 @@ bool AMDGPUUnifyDivergentExitNodesImpl::run(Function &F, DominatorTree *DT,
         DummyReturnBB = createDummyReturnBlock(F, ReturningBlocks);
 
       handleNBranch(F, BB, CBI, DummyReturnBB, Updates);
+      Changed = true;
     } else {
       llvm_unreachable("unsupported block terminator");
     }

Original file line number	Diff line number	Diff line change
`@@ -279,6 +279,7 @@ bool AMDGPUUnifyDivergentExitNodesImpl::run(Function &F, DominatorTree *DT,`
`279`	`279`	`DummyReturnBB = createDummyReturnBlock(F, ReturningBlocks);`
`280`	`280`
`281`	`281`	`handleNBranch(F, BB, CBI, DummyReturnBB, Updates);`
	`282`	`+ Changed = true;`
`282`	`283`	`} else {`
`283`	`284`	`llvm_unreachable("unsupported block terminator");`
`284`	`285`	`}`