Author: Jasmine Tang
Date: 2025-12-10T07:21:39-08:00
New Revision: c4ff1f36bf1f28fb56a9f5cfca8453ec3b21af60

URL: 
https://github.com/llvm/llvm-project/commit/c4ff1f36bf1f28fb56a9f5cfca8453ec3b21af60
DIFF: 
https://github.com/llvm/llvm-project/commit/c4ff1f36bf1f28fb56a9f5cfca8453ec3b21af60.diff

LOG: [CIR] Implement builtin extractf (#170427)

Implement builtin extractf, tests are from
clang/test/CodeGen/X86/avx512f-builtins.c.

Added a new type constraint "element or vector of element" since
LLVMIR also has said constraint. The new getBoolMaskValue is because the
existing SelectOp already accepts only a boolean condition; it'd make
more sense for it to accept a vector of boolean instead of a vector of
i32.

Added: 
    clang/test/CIR/IR/select.cir

Modified: 
    clang/include/clang/CIR/Dialect/IR/CIROps.td
    clang/include/clang/CIR/Dialect/IR/CIRTypeConstraints.td
    clang/lib/CIR/CodeGen/CIRGenBuiltinX86.cpp
    clang/lib/CIR/Dialect/IR/CIRDialect.cpp
    clang/test/CIR/CodeGenBuiltins/X86/avx512f-builtins.c

Removed: 
    


################################################################################
diff  --git a/clang/include/clang/CIR/Dialect/IR/CIROps.td 
b/clang/include/clang/CIR/Dialect/IR/CIROps.td
index 635809afdf2cc..461bce6c6fdb5 100644
--- a/clang/include/clang/CIR/Dialect/IR/CIROps.td
+++ b/clang/include/clang/CIR/Dialect/IR/CIROps.td
@@ -425,6 +425,28 @@ def CIR_ConstantOp : CIR_Op<"const", [
         return boolAttr.getValue();
       llvm_unreachable("Expected a BoolAttr in ConstantOp");
     }
+
+    bool isAllOnesValue() {
+      // Check for -1 integers
+      if (auto intAttr = getValueAttr<cir::IntAttr>())
+        return intAttr.getValue().isAllOnes();
+
+      // Check for FP which are bitcasted from -1 integers
+      if (auto fpAttr = getValueAttr<cir::FPAttr>())
+        return fpAttr.getValue().bitcastToAPInt().isAllOnes();
+
+      // Check for constant vectors with splat values
+      if (cir::VectorType v = mlir::dyn_cast<cir::VectorType>(getType()))
+        if (auto vecAttr = getValueAttr<mlir::DenseElementsAttr>())
+          if (vecAttr.isSplat()) {
+            auto splatAttr = vecAttr.getSplatValue<mlir::Attribute>();
+            if (auto splatInt = mlir::dyn_cast<cir::IntAttr>(splatAttr)) {
+              return splatInt.getValue().isAllOnes();
+          }
+      }
+
+      return false;
+    }
   }];
 
   let hasFolder = 1;
@@ -1960,10 +1982,16 @@ def CIR_SelectOp : CIR_Op<"select", [
   let summary = "Yield one of two values based on a boolean value";
   let description = [{
     The `cir.select` operation takes three operands. The first operand
-    `condition` is a boolean value of type `!cir.bool`. The second and the 
third
-    operand can be of any CIR types, but their types must be the same. If the
-    first operand is `true`, the operation yields its second operand. 
Otherwise,
-    the operation yields its third operand.
+    `condition` is either a boolean value of type `!cir.bool` or a boolean
+    vector of type `!cir.bool`.  The second and the third operand can be of
+    any CIR types, but their types must be the same. If the first operand 
+    is `true`, the operation yields its second operand. Otherwise, the
+    operation yields its third operand.
+
+    In the case where the first operand is a boolean vector, then the second 
+    and third operand needs to also be of some vectors of the same type to
+    each other and that the number of elements of all three operands needs to 
+    be the same as well.
 
     Example:
 
@@ -1975,8 +2003,12 @@ def CIR_SelectOp : CIR_Op<"select", [
     ```
   }];
 
-  let arguments = (ins CIR_BoolType:$condition, CIR_AnyType:$true_value,
-                       CIR_AnyType:$false_value);
+  let arguments = (ins 
+    CIR_ScalarOrVectorOf<CIR_BoolType>:$condition,
+    CIR_AnyType:$true_value,
+    CIR_AnyType:$false_value
+  );
+
   let results = (outs CIR_AnyType:$result);
 
   let assemblyFormat = [{
@@ -1989,6 +2021,7 @@ def CIR_SelectOp : CIR_Op<"select", [
   }];
 
   let hasFolder = 1;
+  let hasVerifier = 1;
 }
 
 
//===----------------------------------------------------------------------===//

diff  --git a/clang/include/clang/CIR/Dialect/IR/CIRTypeConstraints.td 
b/clang/include/clang/CIR/Dialect/IR/CIRTypeConstraints.td
index 89762249ed0c4..8cb1a7ae235de 100644
--- a/clang/include/clang/CIR/Dialect/IR/CIRTypeConstraints.td
+++ b/clang/include/clang/CIR/Dialect/IR/CIRTypeConstraints.td
@@ -250,10 +250,10 @@ def CIR_PtrToArray : CIR_PtrToType<CIR_AnyArrayType>;
 
 def CIR_AnyVectorType : CIR_TypeBase<"::cir::VectorType", "vector type">;
 
-def CIR_VectorElementType : AnyTypeOf<[CIR_AnyIntOrFloatType, CIR_AnyPtrType],
-    "any cir integer, floating point or pointer type"
-> {
-    let cppFunctionName = "isValidVectorTypeElementType";
+def CIR_VectorElementType
+    : AnyTypeOf<[CIR_AnyBoolType, CIR_AnyIntOrFloatType, CIR_AnyPtrType],
+                "any cir boolean, integer, floating point or pointer type"> {
+  let cppFunctionName = "isValidVectorTypeElementType";
 }
 
 class CIR_ElementTypePred<Pred pred> : SubstLeaves<"$_self",
@@ -266,6 +266,9 @@ class CIR_VectorTypeOf<list<Type> types, string summary = 
"">
             "vector of " # CIR_TypeSummaries<types>.value,
             summary)>;
 
+// Type constraint accepting a either a type T or a vector of type T
+class CIR_ScalarOrVectorOf<Type T> : AnyTypeOf<[T, CIR_VectorTypeOf<[T]>]>;
+
 // Vector of integral type
 def IntegerVector : Type<
     And<[

diff  --git a/clang/lib/CIR/CodeGen/CIRGenBuiltinX86.cpp 
b/clang/lib/CIR/CodeGen/CIRGenBuiltinX86.cpp
index 62836ce0f7537..75bf25b20f1af 100644
--- a/clang/lib/CIR/CodeGen/CIRGenBuiltinX86.cpp
+++ b/clang/lib/CIR/CodeGen/CIRGenBuiltinX86.cpp
@@ -20,6 +20,7 @@
 #include "clang/Basic/TargetBuiltins.h"
 #include "clang/CIR/Dialect/IR/CIRTypes.h"
 #include "clang/CIR/MissingFeatures.h"
+#include "llvm/Support/ErrorHandling.h"
 
 using namespace clang;
 using namespace clang::CIRGen;
@@ -163,6 +164,41 @@ static mlir::Value emitX86CompressExpand(CIRGenBuilderTy 
&builder,
                              mlir::ValueRange{source, mask, maskValue});
 }
 
+static mlir::Value getBoolMaskVecValue(CIRGenBuilderTy &builder,
+                                       mlir::Location loc, mlir::Value mask,
+                                       unsigned numElems) {
+
+  cir::BoolType boolTy = builder.getBoolTy();
+  auto maskTy = cir::VectorType::get(
+      boolTy, cast<cir::IntType>(mask.getType()).getWidth());
+  mlir::Value maskVec = builder.createBitcast(mask, maskTy);
+
+  if (numElems < 8) {
+    SmallVector<mlir::Attribute> indices;
+    indices.reserve(numElems);
+    mlir::Type i32Ty = builder.getSInt32Ty();
+    for (auto i : llvm::seq<unsigned>(0, numElems))
+      indices.push_back(cir::IntAttr::get(i32Ty, i));
+
+    maskVec = builder.createVecShuffle(loc, maskVec, maskVec, indices);
+  }
+  return maskVec;
+}
+
+static mlir::Value emitX86Select(CIRGenBuilderTy &builder, mlir::Location loc,
+                                 mlir::Value mask, mlir::Value op0,
+                                 mlir::Value op1) {
+  auto constOp = mlir::dyn_cast_or_null<cir::ConstantOp>(mask.getDefiningOp());
+  // If the mask is all ones just return first argument.
+  if (constOp && constOp.isAllOnesValue())
+    return op0;
+
+  mask = getBoolMaskVecValue(builder, loc, mask,
+                             cast<cir::VectorType>(op0.getType()).getSize());
+
+  return builder.createSelect(loc, mask, op0, op1);
+}
+
 static mlir::Value emitX86MaskAddLogic(CIRGenBuilderTy &builder,
                                        mlir::Location loc,
                                        const std::string &intrinsicName,
@@ -1076,7 +1112,31 @@ mlir::Value CIRGenFunction::emitX86BuiltinExpr(unsigned 
builtinID,
   case X86::BI__builtin_ia32_extractf64x2_256_mask:
   case X86::BI__builtin_ia32_extracti64x2_256_mask:
   case X86::BI__builtin_ia32_extractf64x2_512_mask:
-  case X86::BI__builtin_ia32_extracti64x2_512_mask:
+  case X86::BI__builtin_ia32_extracti64x2_512_mask: {
+    mlir::Location loc = getLoc(expr->getExprLoc());
+    cir::VectorType dstTy = 
cast<cir::VectorType>(convertType(expr->getType()));
+    unsigned numElts = dstTy.getSize();
+    unsigned srcNumElts = cast<cir::VectorType>(ops[0].getType()).getSize();
+    unsigned subVectors = srcNumElts / numElts;
+    assert(llvm::isPowerOf2_32(subVectors) && "Expected power of 2 
subvectors");
+    unsigned index =
+        ops[1].getDefiningOp<cir::ConstantOp>().getIntValue().getZExtValue();
+
+    index &= subVectors - 1; // Remove any extra bits.
+    index *= numElts;
+
+    int64_t indices[16];
+    std::iota(indices, indices + numElts, index);
+
+    mlir::Value poison =
+        builder.getConstant(loc, cir::PoisonAttr::get(ops[0].getType()));
+    mlir::Value res = builder.createVecShuffle(loc, ops[0], poison,
+                                               ArrayRef(indices, numElts));
+    if (ops.size() == 4)
+      res = emitX86Select(builder, loc, ops[3], res, ops[2]);
+
+    return res;
+  }
   case X86::BI__builtin_ia32_vinsertf128_pd256:
   case X86::BI__builtin_ia32_vinsertf128_ps256:
   case X86::BI__builtin_ia32_vinsertf128_si256:

diff  --git a/clang/lib/CIR/Dialect/IR/CIRDialect.cpp 
b/clang/lib/CIR/Dialect/IR/CIRDialect.cpp
index 0f546cb254db4..8077dc6597047 100644
--- a/clang/lib/CIR/Dialect/IR/CIRDialect.cpp
+++ b/clang/lib/CIR/Dialect/IR/CIRDialect.cpp
@@ -2340,6 +2340,25 @@ OpFoldResult cir::SelectOp::fold(FoldAdaptor adaptor) {
   return {};
 }
 
+LogicalResult cir::SelectOp::verify() {
+  // AllTypesMatch already guarantees trueVal and falseVal have matching types.
+  auto condTy = dyn_cast<cir::VectorType>(getCondition().getType());
+
+  // If condition is not a vector, no further checks are needed.
+  if (!condTy)
+    return success();
+
+  // When condition is a vector, both other operands must also be vectors.
+  if (!isa<cir::VectorType>(getTrueValue().getType()) ||
+      !isa<cir::VectorType>(getFalseValue().getType())) {
+    return emitOpError()
+           << "expected both true and false operands to be vector types "
+              "when the condition is a vector boolean type";
+  }
+
+  return success();
+}
+
 
//===----------------------------------------------------------------------===//
 // ShiftOp
 
//===----------------------------------------------------------------------===//

diff  --git a/clang/test/CIR/CodeGenBuiltins/X86/avx512f-builtins.c 
b/clang/test/CIR/CodeGenBuiltins/X86/avx512f-builtins.c
index 918cf40c4f4c1..c7443c82546ae 100644
--- a/clang/test/CIR/CodeGenBuiltins/X86/avx512f-builtins.c
+++ b/clang/test/CIR/CodeGenBuiltins/X86/avx512f-builtins.c
@@ -696,6 +696,184 @@ void test_mm512_mask_i64scatter_epi32(void *__addr, 
__mmask8 __mask, __m512i __i
   return _mm512_mask_i64scatter_epi32(__addr, __mask, __index, __v1, 2);
 }
 
+__m256d test_mm512_extractf64x4_pd(__m512d a)
+{
+  // CIR-LABEL: test_mm512_extractf64x4_pd
+  // CIR: [[POISON:%.*]] = cir.const #cir.poison : !cir.vector<8 x !cir.double>
+  // CIR: cir.vec.shuffle(%{{.*}}, [[POISON]] : !cir.vector<8 x !cir.double>) 
[#cir.int<4> : !s32i, #cir.int<5> : !s32i, #cir.int<6> : !s32i, #cir.int<7> : 
!s32i] : !cir.vector<4 x !cir.double>
+
+  // LLVM-LABEL: test_mm512_extractf64x4_pd
+  // LLVM: shufflevector <8 x double> %{{.*}}, <8 x double> poison, <4 x i32> 
<i32 4, i32 5, i32 6, i32 7>
+
+  // OGCG-LABEL: test_mm512_extractf64x4_pd
+  // OGCG: shufflevector <8 x double> %{{.*}}, <8 x double> poison, <4 x i32> 
<i32 4, i32 5, i32 6, i32 7>
+  return _mm512_extractf64x4_pd(a, 1);
+}
+
+__m256d test_mm512_mask_extractf64x4_pd(__m256d  __W,__mmask8  __U,__m512d 
__A){
+  // CIR-LABEL: test_mm512_mask_extractf64x4_pd
+  // CIR: [[POISON:%.*]] = cir.const #cir.poison : !cir.vector<8 x !cir.double>
+  // CIR: cir.vec.shuffle(%{{.*}}, [[POISON]] : !cir.vector<8 x !cir.double>) 
[#cir.int<4> : !s32i, #cir.int<5> : !s32i, #cir.int<6> : !s32i, #cir.int<7> : 
!s32i] : !cir.vector<4 x !cir.double>
+  // CIR: cir.select if %{{.*}} then %{{.*}} else %{{.*}} : (!cir.vector<4 x 
!cir.bool>, !cir.vector<4 x !cir.double>, !cir.vector<4 x !cir.double>) -> 
!cir.vector<4 x !cir.double>
+
+  // LLVM-LABEL: test_mm512_mask_extractf64x4_pd
+  // LLVM: shufflevector <8 x double> %{{.*}}, <8 x double> poison, <4 x i32> 
<i32 4, i32 5, i32 6, i32 7>
+  // LLVM: select <4 x i1> %{{.*}}, <4 x double> %{{.*}}, <4 x double> %{{.*}}
+
+  // OGCG-LABEL: test_mm512_mask_extractf64x4_pd
+  // OGCG: shufflevector <8 x double> %{{.*}}, <8 x double> poison, <4 x i32> 
<i32 4, i32 5, i32 6, i32 7>
+  // OGCG: select <4 x i1> %{{.*}}, <4 x double> %{{.*}}, <4 x double> %{{.*}}
+  return _mm512_mask_extractf64x4_pd( __W, __U, __A, 1);
+}
+
+__m256d test_mm512_maskz_extractf64x4_pd(__mmask8  __U,__m512d __A){
+  // CIR-LABEL: test_mm512_maskz_extractf64x4_pd
+  // CIR: [[POISON:%.*]] = cir.const #cir.poison : !cir.vector<8 x !cir.double>
+  // CIR: cir.vec.shuffle(%{{.*}}, [[POISON]] : !cir.vector<8 x !cir.double>) 
[#cir.int<4> : !s32i, #cir.int<5> : !s32i, #cir.int<6> : !s32i, #cir.int<7> : 
!s32i] : !cir.vector<4 x !cir.double>
+  // CIR: cir.select if %{{.*}} then %{{.*}} else %{{.*}} : (!cir.vector<4 x 
!cir.bool>, !cir.vector<4 x !cir.double>, !cir.vector<4 x !cir.double>) -> 
!cir.vector<4 x !cir.double>
+
+  // LLVM-LABEL: test_mm512_maskz_extractf64x4_pd
+  // LLVM: shufflevector <8 x double> %{{.*}}, <8 x double> poison, <4 x i32> 
<i32 4, i32 5, i32 6, i32 7>
+  // LLVM: select <4 x i1> %{{.*}}, <4 x double> %{{.*}}, <4 x double> %{{.*}}
+
+  // OGCG-LABEL: test_mm512_maskz_extractf64x4_pd
+  // OGCG: shufflevector <8 x double> %{{.*}}, <8 x double> poison, <4 x i32> 
<i32 4, i32 5, i32 6, i32 7>
+  // OGCG: select <4 x i1> %{{.*}}, <4 x double> %{{.*}}, <4 x double> %{{.*}}
+  return _mm512_maskz_extractf64x4_pd( __U, __A, 1);
+}
+
+__m128 test_mm512_extractf32x4_ps(__m512 a)
+{
+  // CIR-LABEL: test_mm512_extractf32x4_ps
+  // CIR: [[POISON:%.*]] = cir.const #cir.poison : !cir.vector<16 x !cir.float>
+  // CIR: cir.vec.shuffle(%{{.*}}, [[POISON]] : !cir.vector<16 x !cir.float>) 
[#cir.int<4> : !s32i, #cir.int<5> : !s32i, #cir.int<6> : !s32i, #cir.int<7> : 
!s32i] : !cir.vector<4 x !cir.float>
+
+  // LLVM-LABEL: test_mm512_extractf32x4_ps
+  // LLVM: shufflevector <16 x float> %{{.*}}, <16 x float> poison, <4 x i32> 
<i32 4, i32 5, i32 6, i32 7>
+
+  // OGCG-LABEL: test_mm512_extractf32x4_ps
+  // OGCG: shufflevector <16 x float> %{{.*}}, <16 x float> poison, <4 x i32> 
<i32 4, i32 5, i32 6, i32 7>
+  return _mm512_extractf32x4_ps(a, 1);
+}
+
+__m128 test_mm512_mask_extractf32x4_ps(__m128 __W, __mmask8  __U,__m512 __A){
+  // CIR-LABEL: test_mm512_mask_extractf32x4_ps
+  // CIR: [[POISON:%.*]] = cir.const #cir.poison : !cir.vector<16 x !cir.float>
+  // CIR: cir.vec.shuffle(%{{.*}}, [[POISON]] : !cir.vector<16 x !cir.float>) 
[#cir.int<4> : !s32i, #cir.int<5> : !s32i, #cir.int<6> : !s32i, #cir.int<7> : 
!s32i] : !cir.vector<4 x !cir.float>
+
+  // LLVM-LABEL: test_mm512_mask_extractf32x4_ps
+  // LLVM: shufflevector <16 x float> %{{.*}}, <16 x float> poison, <4 x i32> 
<i32 4, i32 5, i32 6, i32 7>
+  // LLVM: select <4 x i1> %{{.*}}, <4 x float> %{{.*}}, <4 x float> %{{.*}}
+
+  // OGCG-LABEL: test_mm512_mask_extractf32x4_ps
+  // OGCG: shufflevector <16 x float> %{{.*}}, <16 x float> poison, <4 x i32> 
<i32 4, i32 5, i32 6, i32 7>
+  // OGCG: select <4 x i1> %{{.*}}, <4 x float> %{{.*}}, <4 x float> %{{.*}}
+  return _mm512_mask_extractf32x4_ps( __W, __U, __A, 1);
+}
+
+__m128 test_mm512_maskz_extractf32x4_ps( __mmask8  __U,__m512 __A){
+  // CIR-LABEL: test_mm512_maskz_extractf32x4_ps
+  // CIR: [[POISON:%.*]] = cir.const #cir.poison : !cir.vector<16 x !cir.float>
+  // CIR: cir.vec.shuffle(%{{.*}}, [[POISON]] : !cir.vector<16 x !cir.float>) 
[#cir.int<4> : !s32i, #cir.int<5> : !s32i, #cir.int<6> : !s32i, #cir.int<7> : 
!s32i] : !cir.vector<4 x !cir.float>
+
+  // LLVM-LABEL: test_mm512_maskz_extractf32x4_ps
+  // LLVM: shufflevector <16 x float> %{{.*}}, <16 x float> poison, <4 x i32> 
<i32 4, i32 5, i32 6, i32 7>
+  // LLVM: select <4 x i1> %{{.*}}, <4 x float> %{{.*}}, <4 x float> %{{.*}}
+
+  // OGCG-LABEL: test_mm512_maskz_extractf32x4_ps
+  // OGCG: shufflevector <16 x float> %{{.*}}, <16 x float> poison, <4 x i32> 
<i32 4, i32 5, i32 6, i32 7>
+  // OGCG: select <4 x i1> %{{.*}}, <4 x float> %{{.*}}, <4 x float> %{{.*}}
+  return _mm512_maskz_extractf32x4_ps(__U, __A, 1);
+}
+
+__m128i test_mm512_extracti32x4_epi32(__m512i __A) {
+  // CIR-LABEL: test_mm512_extracti32x4_epi32
+  // CIR: [[POISON:%.*]] = cir.const #cir.poison : !cir.vector<16 x !s32i>
+  // CIR: cir.vec.shuffle(%{{.*}}, [[POISON]] : !cir.vector<16 x !s32i>) 
[#cir.int<12> : !s32i, #cir.int<13> : !s32i, #cir.int<14> : !s32i, #cir.int<15> 
: !s32i] : !cir.vector<4 x !s32i>
+
+  // LLVM-LABEL: test_mm512_extracti32x4_epi32
+  // LLVM: shufflevector <16 x i32> %{{.*}}, <16 x i32> poison, <4 x i32> <i32 
12, i32 13, i32 14, i32 15>
+
+  // OGCG-LABEL: test_mm512_extracti32x4_epi32
+  // OGCG: shufflevector <16 x i32> %{{.*}}, <16 x i32> poison, <4 x i32> <i32 
12, i32 13, i32 14, i32 15>
+  return _mm512_extracti32x4_epi32(__A, 3);
+}
+
+__m128i test_mm512_mask_extracti32x4_epi32(__m128i __W, __mmask8 __U, __m512i 
__A) {
+  // CIR-LABEL: test_mm512_mask_extracti32x4_epi32
+  // CIR: [[POISON:%.*]] = cir.const #cir.poison : !cir.vector<16 x !s32i>
+  // CIR: cir.vec.shuffle(%{{.*}}, [[POISON]] : !cir.vector<16 x !s32i>) 
[#cir.int<12> : !s32i, #cir.int<13> : !s32i, #cir.int<14> : !s32i, #cir.int<15> 
: !s32i] : !cir.vector<4 x !s32i>
+  // CIR: cir.select if %{{.*}} then %{{.*}} else %{{.*}} : (!cir.vector<4 x 
!cir.bool>, !cir.vector<4 x !s32i>, !cir.vector<4 x !s32i>) -> !cir.vector<4 x 
!s32i>
+
+  // LLVM-LABEL: test_mm512_mask_extracti32x4_epi32
+  // LLVM: shufflevector <16 x i32> %{{.*}}, <16 x i32> poison, <4 x i32> <i32 
12, i32 13, i32 14, i32 15>
+  // LLVM: select <4 x i1> %{{.*}}, <4 x i32> %{{.*}}, <4 x i32> %{{.*}}
+
+  // OGCG-LABEL: test_mm512_mask_extracti32x4_epi32
+  // OGCG: shufflevector <16 x i32> %{{.*}}, <16 x i32> poison, <4 x i32> <i32 
12, i32 13, i32 14, i32 15>
+  // OGCG: select <4 x i1> %{{.*}}, <4 x i32> %{{.*}}, <4 x i32> %{{.*}}
+  return _mm512_mask_extracti32x4_epi32(__W, __U, __A, 3);
+}
+
+__m128i test_mm512_maskz_extracti32x4_epi32(__mmask8 __U, __m512i __A) {
+  // CIR-LABEL: test_mm512_maskz_extracti32x4_epi32
+  // CIR: [[POISON:%.*]] = cir.const #cir.poison : !cir.vector<16 x !s32i>
+  // CIR: cir.vec.shuffle(%{{.*}}, [[POISON]] : !cir.vector<16 x !s32i>) 
[#cir.int<12> : !s32i, #cir.int<13> : !s32i, #cir.int<14> : !s32i, #cir.int<15> 
: !s32i] : !cir.vector<4 x !s32i>
+  // CIR: cir.select if %{{.*}} then %{{.*}} else %{{.*}} : (!cir.vector<4 x 
!cir.bool>, !cir.vector<4 x !s32i>, !cir.vector<4 x !s32i>) -> !cir.vector<4 x 
!s32i>
+
+  // LLVM-LABEL: test_mm512_maskz_extracti32x4_epi32
+  // LLVM: shufflevector <16 x i32> %{{.*}}, <16 x i32> poison, <4 x i32> <i32 
12, i32 13, i32 14, i32 15>
+  // LLVM: select <4 x i1> %{{.*}}, <4 x i32> %{{.*}}, <4 x i32> %{{.*}}
+
+  // OGCG-LABEL: test_mm512_maskz_extracti32x4_epi32
+  // OGCG: shufflevector <16 x i32> %{{.*}}, <16 x i32> poison, <4 x i32> <i32 
12, i32 13, i32 14, i32 15>
+  // OGCG: select <4 x i1> %{{.*}}, <4 x i32> %{{.*}}, <4 x i32> %{{.*}}
+  return _mm512_maskz_extracti32x4_epi32(__U, __A, 3);
+}
+
+__m256i test_mm512_extracti64x4_epi64(__m512i __A) {
+  // CIR-LABEL: test_mm512_extracti64x4_epi64
+  // CIR: [[POISON:%.*]] = cir.const #cir.poison : !cir.vector<8 x !s64i>
+  // CIR: cir.vec.shuffle(%{{.*}}, [[POISON]] : !cir.vector<8 x !s64i>) 
[#cir.int<4> : !s32i, #cir.int<5> : !s32i, #cir.int<6> : !s32i, #cir.int<7> : 
!s32i] : !cir.vector<4 x !s64i>
+
+  // LLVM-LABEL: test_mm512_extracti64x4_epi64
+  // LLVM: shufflevector <8 x i64> %{{.*}}, <8 x i64> poison, <4 x i32> <i32 
4, i32 5, i32 6, i32 7>
+
+  // OGCG-LABEL: test_mm512_extracti64x4_epi64
+  // OGCG: shufflevector <8 x i64> %{{.*}}, <8 x i64> poison, <4 x i32> <i32 
4, i32 5, i32 6, i32 7>
+  return _mm512_extracti64x4_epi64(__A, 1);
+}
+
+__m256i test_mm512_mask_extracti64x4_epi64(__m256i __W, __mmask8 __U, __m512i 
__A) {
+  // CIR-LABEL: test_mm512_mask_extracti64x4_epi64
+  // CIR: [[POISON:%.*]] = cir.const #cir.poison : !cir.vector<8 x !s64i>
+  // CIR: cir.vec.shuffle(%{{.*}}, [[POISON]] : !cir.vector<8 x !s64i>) 
[#cir.int<4> : !s32i, #cir.int<5> : !s32i, #cir.int<6> : !s32i, #cir.int<7> : 
!s32i] : !cir.vector<4 x !s64i>
+
+  // LLVM-LABEL: test_mm512_mask_extracti64x4_epi64
+  // LLVM: shufflevector <8 x i64> %{{.*}}, <8 x i64> poison, <4 x i32> <i32 
4, i32 5, i32 6, i32 7>
+  // LLVM: select <4 x i1> %{{.*}}, <4 x i64> %{{.*}}, <4 x i64> %{{.*}}
+
+  // OGCG-LABEL: test_mm512_mask_extracti64x4_epi64
+  // OGCG: shufflevector <8 x i64> %{{.*}}, <8 x i64> poison, <4 x i32> <i32 
4, i32 5, i32 6, i32 7>
+  // OGCG: select <4 x i1> %{{.*}}, <4 x i64> %{{.*}}, <4 x i64> %{{.*}}
+  return _mm512_mask_extracti64x4_epi64(__W, __U, __A, 1);
+}
+
+__m256i test_mm512_maskz_extracti64x4_epi64(__mmask8 __U, __m512i __A) {
+  // CIR-LABEL: test_mm512_maskz_extracti64x4_epi64
+  // CIR: [[POISON:%.*]] = cir.const #cir.poison : !cir.vector<8 x !s64i>
+  // CIR: cir.vec.shuffle(%{{.*}}, [[POISON]] : !cir.vector<8 x !s64i>) 
[#cir.int<4> : !s32i, #cir.int<5> : !s32i, #cir.int<6> : !s32i, #cir.int<7> : 
!s32i] : !cir.vector<4 x !s64i>
+
+  // LLVM-LABEL: test_mm512_maskz_extracti64x4_epi64
+  // LLVM: shufflevector <8 x i64> %{{.*}}, <8 x i64> poison, <4 x i32> <i32 
4, i32 5, i32 6, i32 7>
+  // LLVM: select <4 x i1> %{{.*}}, <4 x i64> %{{.*}}, <4 x i64> %{{.*}}
+
+  // OGCG-LABEL: test_mm512_maskz_extracti64x4_epi64
+  // OGCG: shufflevector <8 x i64> %{{.*}}, <8 x i64> poison, <4 x i32> <i32 
4, i32 5, i32 6, i32 7>
+  // OGCG: select <4 x i1> %{{.*}}, <4 x i64> %{{.*}}, <4 x i64> %{{.*}}
+  return _mm512_maskz_extracti64x4_epi64(__U, __A, 1);
+}
+
 __m512i test_mm512_mul_epi32(__m512i __A, __m512i __B) {
   // CIR-LABEL: _mm512_mul_epi32
   // CIR: [[A64:%.*]] = cir.cast bitcast %{{.*}} : !cir.vector<16 x !s32i> -> 
!cir.vector<8 x !s64i>

diff  --git a/clang/test/CIR/IR/select.cir b/clang/test/CIR/IR/select.cir
new file mode 100644
index 0000000000000..ba97e562d04fb
--- /dev/null
+++ b/clang/test/CIR/IR/select.cir
@@ -0,0 +1,21 @@
+// RUN: cir-opt %s -verify-diagnostics
+!s32i = !cir.int<s, 32>
+module {
+  cir.func @select_int_wrong_size(%arg0 : !cir.vector<8 x !cir.bool>, %arg1 : 
!cir.vector<7 x !s32i>, %arg2 : !cir.vector<8 x !s32i>) -> !cir.vector<8 x 
!s32i> {
+    // expected-error @below {{failed to verify that all of {true_value, 
false_value, result} have same type}}
+    %0 = cir.select if %arg0 then %arg1 else %arg2 : (!cir.vector<8 x 
!cir.bool>, !cir.vector<7 x !s32i>, !cir.vector<8 x !s32i>) -> !cir.vector<8 x 
!s32i>
+    cir.return %0 : !cir.vector<8 x !s32i>
+  }
+
+
+  cir.func @select_int_wrong_type(%arg0 : !cir.vector<8 x !cir.bool>, %arg1 : 
!s32i, %arg2 : !s32i) -> !s32i {
+    // expected-error @below {{expected both true and false operands to be 
vector types when the condition is a vector boolean type}}
+    %0 = cir.select if %arg0 then %arg1 else %arg2 : (!cir.vector<8 x 
!cir.bool>, !s32i, !s32i) -> !s32i
+    cir.return %0 : !s32i
+  }
+
+  cir.func @select_int_valid(%arg0 : !cir.bool, %arg1 : !cir.vector<8 x 
!s32i>, %arg2 : !cir.vector<8 x !s32i>) -> !cir.vector<8 x !s32i> {
+    %0 = cir.select if %arg0 then %arg1 else %arg2 : (!cir.bool, !cir.vector<8 
x !s32i>, !cir.vector<8 x !s32i>) -> !cir.vector<8 x !s32i>
+    cir.return %0 : !cir.vector<8 x !s32i>
+  }
+}


        
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