[clang] [flang] [llvm] add -floop-fuse to clang and flang (PR #142686)

[Madhur Amilkanthwar via llvm-commits]

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@@ -518,6 +524,9 @@ PassBuilder::buildO1FunctionSimplificationPipeline(OptimizationLevel Level,
 
   invokeLoopOptimizerEndEPCallbacks(LPM2, Level);
 
+  if (PTO.LoopFuse)
+    FPM.addPass(LoopFusePass());
+
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madhur13490 wrote:

I have moved it to the function simplification pipeline. LoopFusion is a function pass. I am open to change the place if this doesn't feel alright.

https://github.com/llvm/llvm-project/pull/142686