[clang] [CIR][AArch64] Upstream vset_lane_*/vsetq_lane_* NEON builtins (PR #186623)
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Sat Mar 14 13:37:11 PDT 2026
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<!--LLVM CODE FORMAT COMMENT: {clang-format}-->
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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 c,cpp -- clang/test/CodeGen/AArch64/neon/neon-vset.c clang/lib/CIR/CodeGen/CIRGenBuiltinAArch64.cpp clang/test/CodeGen/AArch64/bf16-getset-intrinsics.c clang/test/CodeGen/AArch64/neon-vget.c --diff_from_common_commit
``````````
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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.
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View the diff from clang-format here.
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``````````diff
diff --git a/clang/lib/CIR/CodeGen/CIRGenBuiltinAArch64.cpp b/clang/lib/CIR/CodeGen/CIRGenBuiltinAArch64.cpp
index 87d2c228d..b289d6e8c 100644
--- a/clang/lib/CIR/CodeGen/CIRGenBuiltinAArch64.cpp
+++ b/clang/lib/CIR/CodeGen/CIRGenBuiltinAArch64.cpp
@@ -2727,8 +2727,8 @@ CIRGenFunction::emitAArch64BuiltinExpr(unsigned builtinID, const CallExpr *expr,
return cir::VecInsertOp::create(builder, loc, ops[1], ops[0], ops[2]);
case NEON::BI__builtin_neon_vset_lane_f64:
// The vector type needs a cast for the v1f64 variant.
- ops[1] = builder.createBitcast(ops[1],
- cir::VectorType::get(builder.getDoubleTy(), 1));
+ ops[1] = builder.createBitcast(
+ ops[1], cir::VectorType::get(builder.getDoubleTy(), 1));
return cir::VecInsertOp::create(builder, loc, ops[1], ops[0], ops[2]);
case NEON::BI__builtin_neon_vset_lane_mf8:
case NEON::BI__builtin_neon_vsetq_lane_mf8:
@@ -2738,8 +2738,8 @@ CIRGenFunction::emitAArch64BuiltinExpr(unsigned builtinID, const CallExpr *expr,
return mlir::Value{};
case NEON::BI__builtin_neon_vsetq_lane_f64:
// The vector type needs a cast for the v2f64 variant.
- ops[1] = builder.createBitcast(ops[1],
- cir::VectorType::get(builder.getDoubleTy(), 2));
+ ops[1] = builder.createBitcast(
+ ops[1], cir::VectorType::get(builder.getDoubleTy(), 2));
return cir::VecInsertOp::create(builder, loc, ops[1], ops[0], ops[2]);
case NEON::BI__builtin_neon_vget_lane_i8:
case NEON::BI__builtin_neon_vdupb_lane_i8:
``````````
</details>
https://github.com/llvm/llvm-project/pull/186623
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