[llvm] [Hexagon] Lowering saturating subtraction (PR #158726)

via llvm-commits llvm-commits at lists.llvm.org
Mon Sep 15 12:56:26 PDT 2025


github-actions[bot] wrote:

<!--LLVM CODE FORMAT COMMENT: {clang-format}-->


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<details>
<summary>
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/Hexagon/HexagonISelLoweringHVX.cpp
``````````

:warning:
The reproduction instructions above might return results for more than one PR
in a stack if you are using a stacked PR workflow. You can limit the results by
changing `origin/main` to the base branch/commit you want to compare against.
:warning:

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<details>
<summary>
View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/Target/Hexagon/HexagonISelLoweringHVX.cpp b/llvm/lib/Target/Hexagon/HexagonISelLoweringHVX.cpp
index adfcddf03..ff02a67d5 100644
--- a/llvm/lib/Target/Hexagon/HexagonISelLoweringHVX.cpp
+++ b/llvm/lib/Target/Hexagon/HexagonISelLoweringHVX.cpp
@@ -208,8 +208,8 @@ HexagonTargetLowering::initializeHVXLowering() {
     setOperationAction(ISD::SPLAT_VECTOR,   T, Legal);
     setOperationAction(ISD::UADDSAT, T, Legal);
     setOperationAction(ISD::SADDSAT, T, Legal);
-    setOperationAction(ISD::USUBSAT,        T, Legal);
-    setOperationAction(ISD::SSUBSAT,        T, Legal);
+    setOperationAction(ISD::USUBSAT, T, Legal);
+    setOperationAction(ISD::SSUBSAT, T, Legal);
     if (T != ByteV) {
       setOperationAction(ISD::SIGN_EXTEND_VECTOR_INREG, T, Legal);
       setOperationAction(ISD::ZERO_EXTEND_VECTOR_INREG, T, Legal);
@@ -304,8 +304,8 @@ HexagonTargetLowering::initializeHVXLowering() {
     setOperationAction(ISD::UADDSAT, T, Legal);
     setOperationAction(ISD::SADDSAT, T, Legal);
     setOperationAction(ISD::SUB,      T, Legal);
-    setOperationAction(ISD::USUBSAT,  T, Legal);
-    setOperationAction(ISD::SSUBSAT,  T, Legal);
+    setOperationAction(ISD::USUBSAT, T, Legal);
+    setOperationAction(ISD::SSUBSAT, T, Legal);
     setOperationAction(ISD::MUL,      T, Custom);
     setOperationAction(ISD::MULHS,    T, Custom);
     setOperationAction(ISD::MULHU,    T, Custom);

``````````

</details>


https://github.com/llvm/llvm-project/pull/158726


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