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-rw-r--r--source/slang/slang-ir-check-differentiability.cpp11
1 files changed, 11 insertions, 0 deletions
diff --git a/source/slang/slang-ir-check-differentiability.cpp b/source/slang/slang-ir-check-differentiability.cpp
index c750b2d3d..1ee94e67e 100644
--- a/source/slang/slang-ir-check-differentiability.cpp
+++ b/source/slang/slang-ir-check-differentiability.cpp
@@ -353,6 +353,17 @@ public:
auto loop = as<IRLoop>(block->getTerminator());
if (!loop)
continue;
+ bool hasBackEdge = false;
+ for (auto use = loop->getTargetBlock()->firstUse; use; use = use->nextUse)
+ {
+ if (use->getUser() != loop)
+ {
+ hasBackEdge = true;
+ break;
+ }
+ }
+ if (!hasBackEdge)
+ continue;
if (loop->findDecoration<IRLoopMaxItersDecoration>() || loop->findDecoration<IRForceUnrollDecoration>())
{
// We are good.