[llvm] [RISCV][P-ext] Only support sshlsat for splat immediate shift amounts. (PR #184886)

via llvm-commits llvm-commits at lists.llvm.org
Thu Mar 5 13:01:51 PST 2026


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You can test this locally with the following command:
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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp -- llvm/lib/Target/RISCV/RISCVISelLowering.cpp --diff_from_common_commit
``````````

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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/Target/RISCV/RISCVISelLowering.cpp b/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
index 90b75dbd2..45fbc8b7d 100644
--- a/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
+++ b/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
@@ -8889,8 +8889,8 @@ SDValue RISCVTargetLowering::LowerOperation(SDValue Op,
     return SDValue();
   case ISD::SSHLSAT: {
     MVT VT = Op.getSimpleValueType();
-    assert(VT.isFixedLengthVector() &&
-           Subtarget.hasStdExtP() && "Unexptect custom legalisation");
+    assert(VT.isFixedLengthVector() && Subtarget.hasStdExtP() &&
+           "Unexptect custom legalisation");
     APInt Splat;
     if (!ISD::isConstantSplatVector(Op.getOperand(1).getNode(), Splat))
       return SDValue();

``````````

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https://github.com/llvm/llvm-project/pull/184886


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