[llvm] [DAGCombiner] Extend FP-to-Int cast without requiring nsz (PR #161093)
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Mon Sep 29 09:29:46 PDT 2025
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diff --git a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
index 74f601557..c071c9255 100644
--- a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -18860,8 +18860,10 @@ static SDValue foldFPToIntToFP(SDNode *N, const SDLoc &DL, SelectionDAG &DAG,
// We can fold the fpto[us]i -> [us]itofp pattern into a single ftrunc.
// If NoSignedZerosFPMath is enabled, this is a direct replacement.
// Otherwise, for strict math, we must handle edge cases:
- // 1. For unsigned conversions, use FABS to handle negative cases. Take -0.0 as example,
- // it first becomes integer 0, and is converted back to +0.0. FTRUNC on its own could produce -0.0.
+ // 1. For unsigned conversions, use FABS to handle negative cases. Take -0.0
+ // as example,
+ // it first becomes integer 0, and is converted back to +0.0. FTRUNC on its
+ // own could produce -0.0.
// FIXME: We should be able to use node-level FMF here.
EVT VT = N->getValueType(0);
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https://github.com/llvm/llvm-project/pull/161093
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