[llvm] [SelectionDAG][ARM] Propagate fast math flags in visitBRCOND (PR #156647)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp -- llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp llvm/lib/Target/ARM/ARMISelLowering.cpp
``````````

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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/Target/ARM/ARMISelLowering.cpp b/llvm/lib/Target/ARM/ARMISelLowering.cpp
index 5c270de20..54956b17a 100644
--- a/llvm/lib/Target/ARM/ARMISelLowering.cpp
+++ b/llvm/lib/Target/ARM/ARMISelLowering.cpp
@@ -5715,7 +5715,7 @@ SDValue ARMTargetLowering::LowerBR_CC(SDValue Op, SelectionDAG &DAG) const {
   if (SDNodeFlags Flags = Op->getFlags();
       (getTargetMachine().Options.UnsafeFPMath || Flags.hasNoNaNs()) &&
       (DAG.getDenormalMode(MVT::f32) == DenormalMode::getIEEE() &&
-      DAG.getDenormalMode(MVT::f64) == DenormalMode::getIEEE()) &&
+       DAG.getDenormalMode(MVT::f64) == DenormalMode::getIEEE()) &&
       (CC == ISD::SETEQ || CC == ISD::SETOEQ || CC == ISD::SETNE ||
        CC == ISD::SETUNE)) {
     if (SDValue Result = OptimizeVFPBrcond(Op, DAG))

``````````

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https://github.com/llvm/llvm-project/pull/156647