[llvm] [AArch64] Extend SBC combine to handle CSET HI (PR #192708)
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Fri Apr 17 11:13:38 PDT 2026
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git-clang-format --diff origin/main HEAD --extensions cpp -- llvm/lib/Target/AArch64/AArch64ISelLowering.cpp --diff_from_common_commit
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``````````diff
diff --git a/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp b/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
index d1a822546..4a8aa4945 100644
--- a/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
+++ b/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
@@ -23123,9 +23123,9 @@ static SDValue performSubWithBorrowCombine(SDNode *N, SelectionDAG &DAG) {
// For HI (unsigned >), swap the SUBS operands to obtain LO (unsigned <).
if (CC == AArch64CC::HI) {
- Flags = DAG.getNode(AArch64ISD::SUBS, SDLoc(Flags),
- DAG.getVTList(VT, FlagsVT),
- Flags.getOperand(1), Flags.getOperand(0));
+ Flags =
+ DAG.getNode(AArch64ISD::SUBS, SDLoc(Flags), DAG.getVTList(VT, FlagsVT),
+ Flags.getOperand(1), Flags.getOperand(0));
Flags = Flags.getValue(1);
}
``````````
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https://github.com/llvm/llvm-project/pull/192708
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