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[CIR][CIRGen][Builtin][X86] Multishift Intrinsics #169618

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[CIR][CIRGen][Builtin][X86] Multishift Intrinsics #169618

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7 changes: 7 additions & 0 deletions clang/lib/CIR/CodeGen/CIRGenBuiltinX86.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -877,9 +877,16 @@ mlir::Value CIRGenFunction::emitX86BuiltinExpr(unsigned builtinID,
case X86::BI__builtin_ia32_vp2intersect_d_512:
case X86::BI__builtin_ia32_vp2intersect_d_256:
case X86::BI__builtin_ia32_vp2intersect_d_128:
cgm.errorNYI(expr->getSourceRange(),
std::string("unimplemented X86 builtin call: ") +
getContext().BuiltinInfo.getName(builtinID));
return {};
case X86::BI__builtin_ia32_vpmultishiftqb128:
return emitIntrinsicCallOp(*this, expr, "x86_avx512_pmultishift_qb_128", ops[0].getType(), ops);
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@andykaylor andykaylor Dec 1, 2025

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return emitIntrinsicCallOp(*this, expr, "x86_avx512_pmultishift_qb_128", ops[0].getType(), ops);
return emitIntrinsicCallOp(builder, getLoc(expr->getExprLoc()), "x86_avx512_pmultishift_qb_128", ops[0].getType(), ops);

You'll need to rebase your PR to get this new signature. It's been updated recently.

case X86::BI__builtin_ia32_vpmultishiftqb256:
return emitIntrinsicCallOp(*this, expr, "x86_avx512_pmultishift_qb_256", ops[0].getType(), ops);
case X86::BI__builtin_ia32_vpmultishiftqb512:
return emitIntrinsicCallOp(*this, expr, "x86_avx512_pmultishift_qb_512", ops[0].getType(), ops);
case X86::BI__builtin_ia32_vpshufbitqmb128_mask:
case X86::BI__builtin_ia32_vpshufbitqmb256_mask:
case X86::BI__builtin_ia32_vpshufbitqmb512_mask:
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11 changes: 11 additions & 0 deletions clang/test/CIR/CodeGen/X86/builtin_multishift.c
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@@ -0,0 +1,11 @@
// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -target-feature +avx512vbmi \
// RUN: -fclangir -emit-cir %s -o - | FileCheck %s
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@andykaylor andykaylor Dec 1, 2025

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// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -target-feature +avx512vbmi \
// RUN: -fclangir -emit-cir %s -o - | FileCheck %s
// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -target-feature +avx512vbmi -fclangir -emit-cir %s -o %t.cir
// RUN: FileCheck --input-file=%t.cir --check-prefix=CIR %s
// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -target-feature +avx512vbmi -fclangir -emit-llvm %s -o %t-cir.ll
// RUN: FileCheck --input-file=%t-cir.ll --check-prefix=LLVM %s
// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -target-feature +avx512vbmi -emit-llvm %s -o %t.ll
// RUN: FileCheck --input-file=%t.ll --check-prefix=OGCG %s

These lines perform the three variations of checks we expect.

However, this test should be moved to clang/test/CIR/CodeGenBuiltins/X86/avx512vbmi-builtins.c which is also being added in #169582


#include <immintrin.h>
__m512i test_multishift(__m512i x, __m512i y) {
return _mm512_multishift_epi64_epi8(x, y);
}

// // CHECK: cir.func @test_multishift
// // CHECK: cir.call @__builtin_ia32_vpmultishiftqb512