https://github.com/kimsh02 updated 
https://github.com/llvm/llvm-project/pull/160428

>From ce61f477ee24f0e3c9c2a4c08e0a8f0978a958f8 Mon Sep 17 00:00:00 2001
From: kimsh02 <[email protected]>
Date: Thu, 2 Oct 2025 05:44:38 -0700
Subject: [PATCH] Squash

---
 clang/include/clang/Basic/BuiltinsX86.td | 27 +++++--
 clang/lib/AST/ByteCode/InterpBuiltin.cpp | 89 +++++++++++++++++++++++-
 clang/lib/AST/ExprConstant.cpp           | 76 +++++++++++++++++++-
 clang/lib/Headers/avxintrin.h            | 75 ++++++++------------
 clang/lib/Headers/smmintrin.h            | 12 ++--
 clang/test/CodeGen/X86/avx-builtins.c    | 59 ++++++++++++++++
 clang/test/CodeGen/X86/sse41-builtins.c  | 20 ++++++
 7 files changed, 297 insertions(+), 61 deletions(-)

diff --git a/clang/include/clang/Basic/BuiltinsX86.td 
b/clang/include/clang/Basic/BuiltinsX86.td
index 77e599587edc3..f48078afb021c 100644
--- a/clang/include/clang/Basic/BuiltinsX86.td
+++ b/clang/include/clang/Basic/BuiltinsX86.td
@@ -317,10 +317,8 @@ let Features = "sse4.1", Attributes = [NoThrow, Const, 
RequiredVectorWidth<128>]
   def roundsd : X86Builtin<"_Vector<2, double>(_Vector<2, double>, _Vector<2, 
double>, _Constant int)">;
   def roundpd : X86Builtin<"_Vector<2, double>(_Vector<2, double>, _Constant 
int)">;
   def dpps : X86Builtin<"_Vector<4, float>(_Vector<4, float>, _Vector<4, 
float>, _Constant char)">;
-  def dppd : X86Builtin<"_Vector<2, double>(_Vector<2, double>, _Vector<2, 
double>, _Constant char)">;
-  def ptestz128 : X86Builtin<"int(_Vector<2, long long int>, _Vector<2, long 
long int>)">;
-  def ptestc128 : X86Builtin<"int(_Vector<2, long long int>, _Vector<2, long 
long int>)">;
-  def ptestnzc128 : X86Builtin<"int(_Vector<2, long long int>, _Vector<2, long 
long int>)">;
+  def dppd : X86Builtin<"_Vector<2, double>(_Vector<2, double>, "
+                        "_Vector<2,double>, _Constant char)">;
   def mpsadbw128 : X86Builtin<"_Vector<16, char>(_Vector<16, char>, 
_Vector<16, char>, _Constant char)">;
   def phminposuw128 : X86Builtin<"_Vector<8, short>(_Vector<8, short>)">;
   def vec_ext_v16qi : X86Builtin<"char(_Vector<16, char>, _Constant int)">;
@@ -328,6 +326,16 @@ let Features = "sse4.1", Attributes = [NoThrow, Const, 
RequiredVectorWidth<128>]
   def vec_set_v4si : X86Builtin<"_Vector<4, int>(_Vector<4, int>, int, 
_Constant int)">;
 }
 
+let Features = "sse4.1",
+    Attributes = [NoThrow, Const, Constexpr, RequiredVectorWidth<128>] in {
+  def ptestz128
+      : X86Builtin<"int(_Vector<2, long long int>, _Vector<2, long long 
int>)">;
+  def ptestc128
+      : X86Builtin<"int(_Vector<2, long long int>, _Vector<2, long long 
int>)">;
+  def ptestnzc128
+      : X86Builtin<"int(_Vector<2, long long int>, _Vector<2, long long 
int>)">;
+}
+
 let Features = "sse4.1", Attributes = [NoThrow, Const, Constexpr, 
RequiredVectorWidth<128>] in {
   def pblendw128 : X86Builtin<"_Vector<8, short>(_Vector<8, short>, _Vector<8, 
short>, _Constant int)">;
   def blendpd : X86Builtin<"_Vector<2, double>(_Vector<2, double>, _Vector<2, 
double>, _Constant int)">;
@@ -513,8 +521,8 @@ let Features = "avx", Attributes = [NoThrow, Const, 
RequiredVectorWidth<256>] in
   def roundps256 : X86Builtin<"_Vector<8, float>(_Vector<8, float>, _Constant 
int)">;
 }
 
-
-let Features = "avx", Attributes = [NoThrow, Const, RequiredVectorWidth<128>] 
in {
+let Features = "avx",
+    Attributes = [NoThrow, Const, Constexpr, RequiredVectorWidth<128>] in {
   def vtestzpd : X86Builtin<"int(_Vector<2, double>, _Vector<2, double>)">;
   def vtestcpd : X86Builtin<"int(_Vector<2, double>, _Vector<2, double>)">;
   def vtestnzcpd : X86Builtin<"int(_Vector<2, double>, _Vector<2, double>)">;
@@ -523,7 +531,8 @@ let Features = "avx", Attributes = [NoThrow, Const, 
RequiredVectorWidth<128>] in
   def vtestnzcps : X86Builtin<"int(_Vector<4, float>, _Vector<4, float>)">;
 }
 
-let Features = "avx", Attributes = [NoThrow, Const, RequiredVectorWidth<256>] 
in {
+let Features = "avx",
+    Attributes = [NoThrow, Const, Constexpr, RequiredVectorWidth<256>] in {
   def vtestzpd256 : X86Builtin<"int(_Vector<4, double>, _Vector<4, double>)">;
   def vtestcpd256 : X86Builtin<"int(_Vector<4, double>, _Vector<4, double>)">;
   def vtestnzcpd256 : X86Builtin<"int(_Vector<4, double>, _Vector<4, 
double>)">;
@@ -533,6 +542,10 @@ let Features = "avx", Attributes = [NoThrow, Const, 
RequiredVectorWidth<256>] in
   def ptestz256 : X86Builtin<"int(_Vector<4, long long int>, _Vector<4, long 
long int>)">;
   def ptestc256 : X86Builtin<"int(_Vector<4, long long int>, _Vector<4, long 
long int>)">;
   def ptestnzc256 : X86Builtin<"int(_Vector<4, long long int>, _Vector<4, long 
long int>)">;
+}
+
+let Features = "avx",
+    Attributes = [NoThrow, Const, RequiredVectorWidth<256>] in {
   def movmskpd256 : X86Builtin<"int(_Vector<4, double>)">;
   def movmskps256 : X86Builtin<"int(_Vector<8, float>)">;
 }
diff --git a/clang/lib/AST/ByteCode/InterpBuiltin.cpp 
b/clang/lib/AST/ByteCode/InterpBuiltin.cpp
index 9076946d29657..e27d8281485cd 100644
--- a/clang/lib/AST/ByteCode/InterpBuiltin.cpp
+++ b/clang/lib/AST/ByteCode/InterpBuiltin.cpp
@@ -2889,6 +2889,66 @@ static bool interp__builtin_blend(InterpState &S, 
CodePtr OpPC,
   return true;
 }
 
+static bool interp__builtin_ia32_test_op(
+    InterpState &S, CodePtr OpPC, const CallExpr *Call,
+    llvm::function_ref<bool(const APInt &A, const APInt &B)> Fn) {
+  const Pointer &RHS = S.Stk.pop<Pointer>();
+  const Pointer &LHS = S.Stk.pop<Pointer>();
+
+  assert(LHS.getNumElems() == RHS.getNumElems());
+  assert(LHS.getFieldDesc()->isPrimitiveArray() &&
+         RHS.getFieldDesc()->isPrimitiveArray());
+
+  if (!S.getASTContext().hasSameUnqualifiedType(getElemType(LHS),
+                                                getElemType(RHS)))
+    return false;
+
+  const unsigned SourceLen = LHS.getNumElems();
+  const QualType ElemQT = getElemType(LHS);
+  const OptPrimType ElemPT = S.getContext().classify(ElemQT);
+
+  if (ElemQT->isIntegerType()) {
+    APInt FirstElem;
+    INT_TYPE_SWITCH_NO_BOOL(*ElemPT,
+                            { FirstElem = LHS.elem<T>(0).toAPSInt(); });
+    const unsigned LaneWidth = FirstElem.getBitWidth();
+
+    APInt AWide(LaneWidth * SourceLen, 0);
+    APInt BWide(LaneWidth * SourceLen, 0);
+
+    for (unsigned I = 0; I != SourceLen; ++I) {
+      APInt ALane;
+      APInt BLane;
+      INT_TYPE_SWITCH_NO_BOOL(*ElemPT, {
+        ALane = LHS.elem<T>(I).toAPSInt();
+        BLane = RHS.elem<T>(I).toAPSInt();
+      });
+      AWide.insertBits(ALane, I * LaneWidth);
+      BWide.insertBits(BLane, I * LaneWidth);
+    }
+    pushInteger(S, Fn(AWide, BWide) ? 1 : 0, Call->getType());
+    return true;
+  } else if (ElemQT->isFloatingType()) {
+    APInt ASignBits(SourceLen, 0);
+    APInt BSignBits(SourceLen, 0);
+
+    for (unsigned I = 0; I != SourceLen; ++I) {
+      using T = PrimConv<PT_Float>::T;
+      APInt ALane = LHS.elem<T>(I).getAPFloat().bitcastToAPInt();
+      APInt BLane = RHS.elem<T>(I).getAPFloat().bitcastToAPInt();
+      const unsigned SignBit = ALane.getBitWidth() - 1;
+      const bool ALaneSign = ALane[SignBit];
+      const bool BLaneSign = BLane[SignBit];
+      ASignBits.setBitVal(I, ALaneSign);
+      BSignBits.setBitVal(I, BLaneSign);
+    }
+    pushInteger(S, Fn(ASignBits, BSignBits) ? 1 : 0, Call->getType());
+    return true;
+  } else { // Must be integer or float type
+    return false;
+  }
+}
+
 static bool interp__builtin_elementwise_triop(
     InterpState &S, CodePtr OpPC, const CallExpr *Call,
     llvm::function_ref<APInt(const APSInt &, const APSInt &, const APSInt &)>
@@ -3647,7 +3707,34 @@ bool InterpretBuiltin(InterpState &S, CodePtr OpPC, 
const CallExpr *Call,
         S, OpPC, Call, [](const APSInt &F, const APSInt &T, const APSInt &C) {
           return ((APInt)C).isNegative() ? T : F;
         });
-
+  case X86::BI__builtin_ia32_ptestz128:
+  case X86::BI__builtin_ia32_ptestz256:
+  case X86::BI__builtin_ia32_vtestzps:
+  case X86::BI__builtin_ia32_vtestzps256:
+  case X86::BI__builtin_ia32_vtestzpd:
+  case X86::BI__builtin_ia32_vtestzpd256:
+    return interp__builtin_ia32_test_op(
+        S, OpPC, Call,
+        [](const APInt &A, const APInt &B) { return (A & B) == 0; });
+  case X86::BI__builtin_ia32_ptestc128:
+  case X86::BI__builtin_ia32_ptestc256:
+  case X86::BI__builtin_ia32_vtestcps:
+  case X86::BI__builtin_ia32_vtestcps256:
+  case X86::BI__builtin_ia32_vtestcpd:
+  case X86::BI__builtin_ia32_vtestcpd256:
+    return interp__builtin_ia32_test_op(
+        S, OpPC, Call,
+        [](const APInt &A, const APInt &B) { return (~A & B) == 0; });
+  case X86::BI__builtin_ia32_ptestnzc128:
+  case X86::BI__builtin_ia32_ptestnzc256:
+  case X86::BI__builtin_ia32_vtestnzcps:
+  case X86::BI__builtin_ia32_vtestnzcps256:
+  case X86::BI__builtin_ia32_vtestnzcpd:
+  case X86::BI__builtin_ia32_vtestnzcpd256:
+    return interp__builtin_ia32_test_op(
+        S, OpPC, Call, [](const APInt &A, const APInt &B) {
+          return ((A & B) != 0) && ((~A & B) != 0);
+        });
   case X86::BI__builtin_ia32_selectb_128:
   case X86::BI__builtin_ia32_selectb_256:
   case X86::BI__builtin_ia32_selectb_512:
diff --git a/clang/lib/AST/ExprConstant.cpp b/clang/lib/AST/ExprConstant.cpp
index b706b14945b6d..f295f2aff9385 100644
--- a/clang/lib/AST/ExprConstant.cpp
+++ b/clang/lib/AST/ExprConstant.cpp
@@ -13650,6 +13650,51 @@ static bool getBuiltinAlignArguments(const CallExpr 
*E, EvalInfo &Info,
 
 bool IntExprEvaluator::VisitBuiltinCallExpr(const CallExpr *E,
                                             unsigned BuiltinOp) {
+  auto EvalTestOp =
+      [&](llvm::function_ref<bool(const APInt &, const APInt &)> Fn) {
+        APValue SourceLHS, SourceRHS;
+        if (!EvaluateAsRValue(Info, E->getArg(0), SourceLHS) ||
+            !EvaluateAsRValue(Info, E->getArg(1), SourceRHS))
+          return false;
+
+        unsigned SourceLen = SourceLHS.getVectorLength();
+
+        const VectorType *VT = E->getArg(0)->getType()->castAs<VectorType>();
+        QualType ElemQT = VT->getElementType();
+
+        if (ElemQT->isIntegerType()) {
+          const unsigned LaneWidth =
+              SourceLHS.getVectorElt(0).getInt().getBitWidth();
+          APInt AWide(LaneWidth * SourceLen, 0);
+          APInt BWide(LaneWidth * SourceLen, 0);
+
+          for (unsigned I = 0; I != SourceLen; ++I) {
+            APInt ALane = SourceLHS.getVectorElt(I).getInt();
+            APInt BLane = SourceRHS.getVectorElt(I).getInt();
+            AWide.insertBits(ALane, I * LaneWidth);
+            BWide.insertBits(BLane, I * LaneWidth);
+          }
+          return Success(Fn(AWide, BWide), E);
+
+        } else if (ElemQT->isFloatingType()) {
+          APInt ASignBits(SourceLen, 0);
+          APInt BSignBits(SourceLen, 0);
+
+          for (unsigned I = 0; I != SourceLen; ++I) {
+            APInt ALane = 
SourceLHS.getVectorElt(I).getFloat().bitcastToAPInt();
+            APInt BLane = 
SourceRHS.getVectorElt(I).getFloat().bitcastToAPInt();
+            const unsigned SignBit = ALane.getBitWidth() - 1;
+            const bool ALaneSign = ALane[SignBit];
+            const bool BLaneSign = BLane[SignBit];
+            ASignBits.setBitVal(I, ALaneSign);
+            BSignBits.setBitVal(I, BLaneSign);
+          }
+          return Success(Fn(ASignBits, BSignBits), E);
+
+        } else { // Must be integer or float type
+          return false;
+        }
+      };
 
   auto HandleMaskBinOp =
       [&](llvm::function_ref<APSInt(const APSInt &, const APSInt &)> Fn)
@@ -14763,7 +14808,34 @@ bool IntExprEvaluator::VisitBuiltinCallExpr(const 
CallExpr *E,
         Result.setBitVal(P++, Val[I]);
     return Success(Result, E);
   }
-
+  case X86::BI__builtin_ia32_ptestz128:
+  case X86::BI__builtin_ia32_ptestz256:
+  case X86::BI__builtin_ia32_vtestzps:
+  case X86::BI__builtin_ia32_vtestzps256:
+  case X86::BI__builtin_ia32_vtestzpd:
+  case X86::BI__builtin_ia32_vtestzpd256: {
+    return EvalTestOp(
+        [](const APInt &A, const APInt &B) { return (A & B) == 0; });
+  }
+  case X86::BI__builtin_ia32_ptestc128:
+  case X86::BI__builtin_ia32_ptestc256:
+  case X86::BI__builtin_ia32_vtestcps:
+  case X86::BI__builtin_ia32_vtestcps256:
+  case X86::BI__builtin_ia32_vtestcpd:
+  case X86::BI__builtin_ia32_vtestcpd256: {
+    return EvalTestOp(
+        [](const APInt &A, const APInt &B) { return (~A & B) == 0; });
+  }
+  case X86::BI__builtin_ia32_ptestnzc128:
+  case X86::BI__builtin_ia32_ptestnzc256:
+  case X86::BI__builtin_ia32_vtestnzcps:
+  case X86::BI__builtin_ia32_vtestnzcps256:
+  case X86::BI__builtin_ia32_vtestnzcpd:
+  case X86::BI__builtin_ia32_vtestnzcpd256: {
+    return EvalTestOp([](const APInt &A, const APInt &B) {
+      return ((A & B) != 0) && ((~A & B) != 0);
+    });
+  }
   case X86::BI__builtin_ia32_kandqi:
   case X86::BI__builtin_ia32_kandhi:
   case X86::BI__builtin_ia32_kandsi:
@@ -14822,7 +14894,7 @@ bool IntExprEvaluator::VisitBuiltinCallExpr(const 
CallExpr *E,
     return HandleMaskBinOp(
         [](const APSInt &LHS, const APSInt &RHS) { return LHS + RHS; });
   }
-  }
+}
 }
 
 /// Determine whether this is a pointer past the end of the complete
diff --git a/clang/lib/Headers/avxintrin.h b/clang/lib/Headers/avxintrin.h
index a7f70994be9db..b37149709c962 100644
--- a/clang/lib/Headers/avxintrin.h
+++ b/clang/lib/Headers/avxintrin.h
@@ -2542,9 +2542,8 @@ _mm256_unpacklo_ps(__m256 __a, __m256 __b) {
 /// \param __b
 ///    A 128-bit vector of [2 x double].
 /// \returns the ZF flag in the EFLAGS register.
-static __inline int __DEFAULT_FN_ATTRS128
-_mm_testz_pd(__m128d __a, __m128d __b)
-{
+static __inline int __DEFAULT_FN_ATTRS128_CONSTEXPR _mm_testz_pd(__m128d __a,
+                                                                 __m128d __b) {
   return __builtin_ia32_vtestzpd((__v2df)__a, (__v2df)__b);
 }
 
@@ -2571,9 +2570,8 @@ _mm_testz_pd(__m128d __a, __m128d __b)
 /// \param __b
 ///    A 128-bit vector of [2 x double].
 /// \returns the CF flag in the EFLAGS register.
-static __inline int __DEFAULT_FN_ATTRS128
-_mm_testc_pd(__m128d __a, __m128d __b)
-{
+static __inline int __DEFAULT_FN_ATTRS128_CONSTEXPR _mm_testc_pd(__m128d __a,
+                                                                 __m128d __b) {
   return __builtin_ia32_vtestcpd((__v2df)__a, (__v2df)__b);
 }
 
@@ -2601,9 +2599,8 @@ _mm_testc_pd(__m128d __a, __m128d __b)
 /// \param __b
 ///    A 128-bit vector of [2 x double].
 /// \returns 1 if both the ZF and CF flags are set to 0, otherwise returns 0.
-static __inline int __DEFAULT_FN_ATTRS128
-_mm_testnzc_pd(__m128d __a, __m128d __b)
-{
+static __inline int __DEFAULT_FN_ATTRS128_CONSTEXPR
+_mm_testnzc_pd(__m128d __a, __m128d __b) {
   return __builtin_ia32_vtestnzcpd((__v2df)__a, (__v2df)__b);
 }
 
@@ -2630,9 +2627,8 @@ _mm_testnzc_pd(__m128d __a, __m128d __b)
 /// \param __b
 ///    A 128-bit vector of [4 x float].
 /// \returns the ZF flag.
-static __inline int __DEFAULT_FN_ATTRS128
-_mm_testz_ps(__m128 __a, __m128 __b)
-{
+static __inline int __DEFAULT_FN_ATTRS128_CONSTEXPR _mm_testz_ps(__m128 __a,
+                                                                 __m128 __b) {
   return __builtin_ia32_vtestzps((__v4sf)__a, (__v4sf)__b);
 }
 
@@ -2659,9 +2655,8 @@ _mm_testz_ps(__m128 __a, __m128 __b)
 /// \param __b
 ///    A 128-bit vector of [4 x float].
 /// \returns the CF flag.
-static __inline int __DEFAULT_FN_ATTRS128
-_mm_testc_ps(__m128 __a, __m128 __b)
-{
+static __inline int __DEFAULT_FN_ATTRS128_CONSTEXPR _mm_testc_ps(__m128 __a,
+                                                                 __m128 __b) {
   return __builtin_ia32_vtestcps((__v4sf)__a, (__v4sf)__b);
 }
 
@@ -2689,9 +2684,8 @@ _mm_testc_ps(__m128 __a, __m128 __b)
 /// \param __b
 ///    A 128-bit vector of [4 x float].
 /// \returns 1 if both the ZF and CF flags are set to 0, otherwise returns 0.
-static __inline int __DEFAULT_FN_ATTRS128
-_mm_testnzc_ps(__m128 __a, __m128 __b)
-{
+static __inline int __DEFAULT_FN_ATTRS128_CONSTEXPR _mm_testnzc_ps(__m128 __a,
+                                                                   __m128 __b) 
{
   return __builtin_ia32_vtestnzcps((__v4sf)__a, (__v4sf)__b);
 }
 
@@ -2718,9 +2712,8 @@ _mm_testnzc_ps(__m128 __a, __m128 __b)
 /// \param __b
 ///    A 256-bit vector of [4 x double].
 /// \returns the ZF flag.
-static __inline int __DEFAULT_FN_ATTRS
-_mm256_testz_pd(__m256d __a, __m256d __b)
-{
+static __inline int __DEFAULT_FN_ATTRS_CONSTEXPR _mm256_testz_pd(__m256d __a,
+                                                                 __m256d __b) {
   return __builtin_ia32_vtestzpd256((__v4df)__a, (__v4df)__b);
 }
 
@@ -2747,9 +2740,8 @@ _mm256_testz_pd(__m256d __a, __m256d __b)
 /// \param __b
 ///    A 256-bit vector of [4 x double].
 /// \returns the CF flag.
-static __inline int __DEFAULT_FN_ATTRS
-_mm256_testc_pd(__m256d __a, __m256d __b)
-{
+static __inline int __DEFAULT_FN_ATTRS_CONSTEXPR _mm256_testc_pd(__m256d __a,
+                                                                 __m256d __b) {
   return __builtin_ia32_vtestcpd256((__v4df)__a, (__v4df)__b);
 }
 
@@ -2777,9 +2769,8 @@ _mm256_testc_pd(__m256d __a, __m256d __b)
 /// \param __b
 ///    A 256-bit vector of [4 x double].
 /// \returns 1 if both the ZF and CF flags are set to 0, otherwise returns 0.
-static __inline int __DEFAULT_FN_ATTRS
-_mm256_testnzc_pd(__m256d __a, __m256d __b)
-{
+static __inline int __DEFAULT_FN_ATTRS_CONSTEXPR
+_mm256_testnzc_pd(__m256d __a, __m256d __b) {
   return __builtin_ia32_vtestnzcpd256((__v4df)__a, (__v4df)__b);
 }
 
@@ -2806,9 +2797,8 @@ _mm256_testnzc_pd(__m256d __a, __m256d __b)
 /// \param __b
 ///    A 256-bit vector of [8 x float].
 /// \returns the ZF flag.
-static __inline int __DEFAULT_FN_ATTRS
-_mm256_testz_ps(__m256 __a, __m256 __b)
-{
+static __inline int __DEFAULT_FN_ATTRS_CONSTEXPR _mm256_testz_ps(__m256 __a,
+                                                                 __m256 __b) {
   return __builtin_ia32_vtestzps256((__v8sf)__a, (__v8sf)__b);
 }
 
@@ -2835,9 +2825,8 @@ _mm256_testz_ps(__m256 __a, __m256 __b)
 /// \param __b
 ///    A 256-bit vector of [8 x float].
 /// \returns the CF flag.
-static __inline int __DEFAULT_FN_ATTRS
-_mm256_testc_ps(__m256 __a, __m256 __b)
-{
+static __inline int __DEFAULT_FN_ATTRS_CONSTEXPR _mm256_testc_ps(__m256 __a,
+                                                                 __m256 __b) {
   return __builtin_ia32_vtestcps256((__v8sf)__a, (__v8sf)__b);
 }
 
@@ -2865,9 +2854,8 @@ _mm256_testc_ps(__m256 __a, __m256 __b)
 /// \param __b
 ///    A 256-bit vector of [8 x float].
 /// \returns 1 if both the ZF and CF flags are set to 0, otherwise returns 0.
-static __inline int __DEFAULT_FN_ATTRS
-_mm256_testnzc_ps(__m256 __a, __m256 __b)
-{
+static __inline int __DEFAULT_FN_ATTRS_CONSTEXPR _mm256_testnzc_ps(__m256 __a,
+                                                                   __m256 __b) 
{
   return __builtin_ia32_vtestnzcps256((__v8sf)__a, (__v8sf)__b);
 }
 
@@ -2891,9 +2879,8 @@ _mm256_testnzc_ps(__m256 __a, __m256 __b)
 /// \param __b
 ///    A 256-bit integer vector.
 /// \returns the ZF flag.
-static __inline int __DEFAULT_FN_ATTRS
-_mm256_testz_si256(__m256i __a, __m256i __b)
-{
+static __inline int __DEFAULT_FN_ATTRS_CONSTEXPR
+_mm256_testz_si256(__m256i __a, __m256i __b) {
   return __builtin_ia32_ptestz256((__v4di)__a, (__v4di)__b);
 }
 
@@ -2917,9 +2904,8 @@ _mm256_testz_si256(__m256i __a, __m256i __b)
 /// \param __b
 ///    A 256-bit integer vector.
 /// \returns the CF flag.
-static __inline int __DEFAULT_FN_ATTRS
-_mm256_testc_si256(__m256i __a, __m256i __b)
-{
+static __inline int __DEFAULT_FN_ATTRS_CONSTEXPR
+_mm256_testc_si256(__m256i __a, __m256i __b) {
   return __builtin_ia32_ptestc256((__v4di)__a, (__v4di)__b);
 }
 
@@ -2944,9 +2930,8 @@ _mm256_testc_si256(__m256i __a, __m256i __b)
 /// \param __b
 ///    A 256-bit integer vector.
 /// \returns 1 if both the ZF and CF flags are set to 0, otherwise returns 0.
-static __inline int __DEFAULT_FN_ATTRS
-_mm256_testnzc_si256(__m256i __a, __m256i __b)
-{
+static __inline int __DEFAULT_FN_ATTRS_CONSTEXPR
+_mm256_testnzc_si256(__m256i __a, __m256i __b) {
   return __builtin_ia32_ptestnzc256((__v4di)__a, (__v4di)__b);
 }
 
diff --git a/clang/lib/Headers/smmintrin.h b/clang/lib/Headers/smmintrin.h
index 5e63a1ae321bc..4f197d5ecaff9 100644
--- a/clang/lib/Headers/smmintrin.h
+++ b/clang/lib/Headers/smmintrin.h
@@ -1093,8 +1093,8 @@ _mm_max_epu32(__m128i __V1, __m128i __V2) {
 /// \param __V
 ///    A 128-bit integer vector selecting which bits to test in operand \a __M.
 /// \returns TRUE if the specified bits are all zeros; FALSE otherwise.
-static __inline__ int __DEFAULT_FN_ATTRS _mm_testz_si128(__m128i __M,
-                                                         __m128i __V) {
+static __inline__ int __DEFAULT_FN_ATTRS_CONSTEXPR
+_mm_testz_si128(__m128i __M, __m128i __V) {
   return __builtin_ia32_ptestz128((__v2di)__M, (__v2di)__V);
 }
 
@@ -1110,8 +1110,8 @@ static __inline__ int __DEFAULT_FN_ATTRS 
_mm_testz_si128(__m128i __M,
 /// \param __V
 ///    A 128-bit integer vector selecting which bits to test in operand \a __M.
 /// \returns TRUE if the specified bits are all ones; FALSE otherwise.
-static __inline__ int __DEFAULT_FN_ATTRS _mm_testc_si128(__m128i __M,
-                                                         __m128i __V) {
+static __inline__ int __DEFAULT_FN_ATTRS_CONSTEXPR
+_mm_testc_si128(__m128i __M, __m128i __V) {
   return __builtin_ia32_ptestc128((__v2di)__M, (__v2di)__V);
 }
 
@@ -1128,8 +1128,8 @@ static __inline__ int __DEFAULT_FN_ATTRS 
_mm_testc_si128(__m128i __M,
 ///    A 128-bit integer vector selecting which bits to test in operand \a __M.
 /// \returns TRUE if the specified bits are neither all zeros nor all ones;
 ///    FALSE otherwise.
-static __inline__ int __DEFAULT_FN_ATTRS _mm_testnzc_si128(__m128i __M,
-                                                           __m128i __V) {
+static __inline__ int __DEFAULT_FN_ATTRS_CONSTEXPR
+_mm_testnzc_si128(__m128i __M, __m128i __V) {
   return __builtin_ia32_ptestnzc128((__v2di)__M, (__v2di)__V);
 }
 
diff --git a/clang/test/CodeGen/X86/avx-builtins.c 
b/clang/test/CodeGen/X86/avx-builtins.c
index 347cd9ee6a667..fabbebc69c876 100644
--- a/clang/test/CodeGen/X86/avx-builtins.c
+++ b/clang/test/CodeGen/X86/avx-builtins.c
@@ -1998,90 +1998,149 @@ int test_mm_testc_pd(__m128d A, __m128d B) {
   // CHECK: call {{.*}}i32 @llvm.x86.avx.vtestc.pd(<2 x double> %{{.*}}, <2 x 
double> %{{.*}})
   return _mm_testc_pd(A, B);
 }
+TEST_CONSTEXPR(_mm_testc_pd((__m128d)(__v2df){-1.0, -2.0},
+                            (__m128d)(__v2df){-3.0,  4.0}) == 1);
+TEST_CONSTEXPR(_mm_testc_pd((__m128d)(__v2df){ 1.0, -2.0},
+                            (__m128d)(__v2df){-3.0,  4.0}) == 0);
+TEST_CONSTEXPR(_mm_testc_pd((__m128d)(__v2df){ 1.0, -2.0},
+                            (__m128d)(__v2df){ 0.0,  5.0}) == 1);
 
 int test_mm256_testc_pd(__m256d A, __m256d B) {
   // CHECK-LABEL: test_mm256_testc_pd
   // CHECK: call {{.*}}i32 @llvm.x86.avx.vtestc.pd.256(<4 x double> %{{.*}}, 
<4 x double> %{{.*}})
   return _mm256_testc_pd(A, B);
 }
+TEST_CONSTEXPR(_mm256_testc_pd(
+  (__m256d)(__v4df){-1.0,  2.0, -3.0,  4.0},
+  (__m256d)(__v4df){-5.0,  6.0,  7.0,  8.0}) == 1);
+TEST_CONSTEXPR(_mm256_testc_pd(
+  (__m256d)(__v4df){ 1.0,  2.0, -3.0,  4.0},
+  (__m256d)(__v4df){-5.0,  6.0,  7.0,  8.0}) == 0);
+TEST_CONSTEXPR(_mm256_testc_pd(
+  (__m256d)(__v4df){-1.0, -2.0, -3.0, -4.0},
+  (__m256d)(__v4df){ 5.0,  6.0,  7.0,  8.0}) == 1);
 
 int test_mm_testc_ps(__m128 A, __m128 B) {
   // CHECK-LABEL: test_mm_testc_ps
   // CHECK: call {{.*}}i32 @llvm.x86.avx.vtestc.ps(<4 x float> %{{.*}}, <4 x 
float> %{{.*}})
   return _mm_testc_ps(A, B);
 }
+TEST_CONSTEXPR(_mm_testc_ps((__m128)(__v4sf){-1,-1,-9001.1009,}, 
(__m128)(__v4sf){-1.0,-9001,9001,9000}) == 1);
+TEST_CONSTEXPR(_mm_testc_ps((__m128)(__v4sf){-1,2384.23,-9001.1009,}, 
(__m128)(__v4sf){-1.0,-9001,9001,9000}) == 0);
+TEST_CONSTEXPR(_mm_testc_ps((__m128)(__v4sf){-1,-2,-9001.1009,-93}, 
(__m128)(__v4sf){-1.0,-9001,-0.9001,-1000}) == 1);
 
 int test_mm256_testc_ps(__m256 A, __m256 B) {
   // CHECK-LABEL: test_mm256_testc_ps
   // CHECK: call {{.*}}i32 @llvm.x86.avx.vtestc.ps.256(<8 x float> %{{.*}}, <8 
x float> %{{.*}})
   return _mm256_testc_ps(A, B);
 }
+TEST_CONSTEXPR(_mm256_testc_ps((__m256)(__v8sf){-1, -2, -3, -4, -5, -6, -7, 
8},(__m256)(__v8sf){1, 2, 3, 4, 5, 6, 7, -8}) == 0);
+TEST_CONSTEXPR(_mm256_testc_ps((__m256)(__v8sf){0,0,0,0,0,0,0,-1.00001},(__m256)(__v8sf){1,
 2, 3, 4, 5, 6, 7, -8}) == 1);
+TEST_CONSTEXPR(_mm256_testc_ps((__m256)(__v8sf){0,-0.00002,0,0,0,0,0,-1.00001},(__m256)(__v8sf){1,
 2, 3, -4, 5, -6, -7, 8}) == 0);
 
 int test_mm256_testc_si256(__m256i A, __m256i B) {
   // CHECK-LABEL: test_mm256_testc_si256
   // CHECK: call {{.*}}i32 @llvm.x86.avx.ptestc.256(<4 x i64> %{{.*}}, <4 x 
i64> %{{.*}})
   return _mm256_testc_si256(A, B);
 }
+TEST_CONSTEXPR(_mm256_testc_si256((__m256i)(__v4di){0,0,0,0}, 
(__m256i)(__v4di){0,0,0,0}) == 1);
+TEST_CONSTEXPR(_mm256_testc_si256((__m256i)(__v4di){0,0,-1,0}, 
(__m256i)(__v4di){0,0,1,0}) == 1);
+TEST_CONSTEXPR(_mm256_testc_si256((__m256i)(__v4di){-1,-2,1,3}, 
(__m256i)(__v4di){0,-1,1,1}) == 0);
 
 int test_mm_testnzc_pd(__m128d A, __m128d B) {
   // CHECK-LABEL: test_mm_testnzc_pd
   // CHECK: call {{.*}}i32 @llvm.x86.avx.vtestnzc.pd(<2 x double> %{{.*}}, <2 
x double> %{{.*}})
   return _mm_testnzc_pd(A, B);
 }
+TEST_CONSTEXPR(_mm_testnzc_pd((__m128d)(__v2df){-1.0, +2.0},
+                              (__m128d)(__v2df){-3.0, -4.0}) == 1);
+TEST_CONSTEXPR(_mm_testnzc_pd((__m128d)(__v2df){+1.0, +2.0},
+                              (__m128d)(__v2df){+3.0, -4.0}) == 0);
+TEST_CONSTEXPR(_mm_testnzc_pd((__m128d)(__v2df){-1.0, -2.0},
+                              (__m128d)(__v2df){-3.0, +4.0}) == 0);
 
 int test_mm256_testnzc_pd(__m256d A, __m256d B) {
   // CHECK-LABEL: test_mm256_testnzc_pd
   // CHECK: call {{.*}}i32 @llvm.x86.avx.vtestnzc.pd.256(<4 x double> %{{.*}}, 
<4 x double> %{{.*}})
   return _mm256_testnzc_pd(A, B);
 }
+TEST_CONSTEXPR(_mm256_testnzc_pd((__m256d)(__v4df){-1.0, 2.0, 3.0, -4.0}, 
(__m256d)(__v4df){-5.0, -6.0, 7.0, 8.0}) == 1);
+TEST_CONSTEXPR(_mm256_testnzc_pd((__m256d)(__v4df){1.0, 2.0, 3.0, 4.0}, 
(__m256d)(__v4df){-1.0, 6.0, 7.0, 8.0}) == 0);
+TEST_CONSTEXPR(_mm256_testnzc_pd((__m256d)(__v4df){-1.0, -2.0, -3.0, -4.0}, 
(__m256d)(__v4df){-5.0, 6.0, 7.0, 8.0}) == 0);
 
 int test_mm_testnzc_ps(__m128 A, __m128 B) {
   // CHECK-LABEL: test_mm_testnzc_ps
   // CHECK: call {{.*}}i32 @llvm.x86.avx.vtestnzc.ps(<4 x float> %{{.*}}, <4 x 
float> %{{.*}})
   return _mm_testnzc_ps(A, B);
 }
+TEST_CONSTEXPR(_mm_testnzc_ps((__m128)(__v4sf){-9.9,987,-67,0}, 
(__m128)(__v4sf){10.0,-1.12,-29.29,0}) == 1);
+TEST_CONSTEXPR(_mm_testnzc_ps((__m128)(__v4sf){-810.0,-1.0,-1.0,-3.0}, 
(__m128)(__v4sf){-10.0,-1.0,-1.0,-2.0}) == 0);
+TEST_CONSTEXPR(_mm_testnzc_ps((__m128)(__v4sf){0,0,0,0}, 
(__m128)(__v4sf){0,-1,0,-1}) == 0);
 
 int test_mm256_testnzc_ps(__m256 A, __m256 B) {
   // CHECK-LABEL: test_mm256_testnzc_ps
   // CHECK: call {{.*}}i32 @llvm.x86.avx.vtestnzc.ps.256(<8 x float> %{{.*}}, 
<8 x float> %{{.*}})
   return _mm256_testnzc_ps(A, B);
 }
+TEST_CONSTEXPR(_mm256_testnzc_ps((__m256)(__v8sf){-1, -2, -3, -4, -5, -6, -7, 
8},(__m256)(__v8sf){1, -2, 3, 4, 5, 6, 7, -8}) == 1);
+TEST_CONSTEXPR(_mm256_testnzc_ps((__m256)(__v8sf){0,0,0,0,0,0,0,-1.00001},(__m256)(__v8sf){1,
 2, 3, 4, 5, 6, 7, -8}) == 0);
+TEST_CONSTEXPR(_mm256_testnzc_ps((__m256)(__v8sf){0,-0.00002,0,0,0,0,0,-1.00001},(__m256)(__v8sf){1,
 2, 3, -4, 5, -6, -7, 8}) == 0);
 
 int test_mm256_testnzc_si256(__m256i A, __m256i B) {
   // CHECK-LABEL: test_mm256_testnzc_si256
   // CHECK: call {{.*}}i32 @llvm.x86.avx.ptestnzc.256(<4 x i64> %{{.*}}, <4 x 
i64> %{{.*}})
   return _mm256_testnzc_si256(A, B);
 }
+TEST_CONSTEXPR(_mm256_testnzc_si256((__m256i)(__v4di){-1,0,0,0}, 
(__m256i)(__v4di){478329848,23438,2343,-3483}) == 1);
+TEST_CONSTEXPR(_mm256_testnzc_si256((__m256i)(__v4di){1,0,0,0}, 
(__m256i)(__v4di){3,0,0,0}) == 1);
+TEST_CONSTEXPR(_mm256_testnzc_si256((__m256i)(__v4di){-1,239483,-1,0}, 
(__m256i)(__v4di){3849234,0,-2,0}) == 0);
+TEST_CONSTEXPR(_mm256_testnzc_si256((__m256i)(__v4di){-1,0,-1,3}, 
(__m256i)(__v4di){1,0,9999999,1}) == 0);
 
 int test_mm_testz_pd(__m128d A, __m128d B) {
   // CHECK-LABEL: test_mm_testz_pd
   // CHECK: call {{.*}}i32 @llvm.x86.avx.vtestz.pd(<2 x double> %{{.*}}, <2 x 
double> %{{.*}})
   return _mm_testz_pd(A, B);
 }
+TEST_CONSTEXPR(_mm_testz_pd((__m128d)(__v2df){-1,0}, (__m128d)(__v2df){0,-1}) 
== 1);
+TEST_CONSTEXPR(_mm_testz_pd((__m128d)(__v2df){0,-13.13}, 
(__m128d)(__v2df){0,-11.1}) == 0);
+TEST_CONSTEXPR(_mm_testz_pd((__m128d)(__v2df){0,5.13}, 
(__m128d)(__v2df){0,-113.1324823}) == 1);
+
 
 int test_mm256_testz_pd(__m256d A, __m256d B) {
   // CHECK-LABEL: test_mm256_testz_pd
   // CHECK: call {{.*}}i32 @llvm.x86.avx.vtestz.pd.256(<4 x double> %{{.*}}, 
<4 x double> %{{.*}})
   return _mm256_testz_pd(A, B);
 }
+TEST_CONSTEXPR(_mm256_testz_pd((__m256d)(__v4df){-1,0,-47.47,0.00002}, 
(__m256d)(__v4df){0,-1,74.0101,-1}) == 1);
+TEST_CONSTEXPR(_mm256_testz_pd((__m256d)(__v4df){-1,3249.9,-47.47,-0.00002}, 
(__m256d)(__v4df){0,-1,74.0101,-9999900}) == 0);
+TEST_CONSTEXPR(_mm256_testz_pd((__m256d)(__v4df){0,0,-8,0}, 
(__m256d)(__v4df){0,-1,-101,-123}) == 0);
 
 int test_mm_testz_ps(__m128 A, __m128 B) {
   // CHECK-LABEL: test_mm_testz_ps
   // CHECK: call {{.*}}i32 @llvm.x86.avx.vtestz.ps(<4 x float> %{{.*}}, <4 x 
float> %{{.*}})
   return _mm_testz_ps(A, B);
 }
+TEST_CONSTEXPR(_mm_testz_ps((__m128)(__v4sf){-9.9,987,67,0}, 
(__m128)(__v4sf){10.0,-1.12,-29.29,0}) == 1);
+TEST_CONSTEXPR(_mm_testz_ps((__m128)(__v4sf){10.0,1.0,-1.0,-3.0}, 
(__m128)(__v4sf){-10.0,-1.0,-1.0,-2.0}) == 0);
+TEST_CONSTEXPR(_mm_testz_ps((__m128)(__v4sf){0,0,0,0}, 
(__m128)(__v4sf){0,-1,0,-1}) == 1);
 
 int test_mm256_testz_ps(__m256 A, __m256 B) {
   // CHECK-LABEL: test_mm256_testz_ps
   // CHECK: call {{.*}}i32 @llvm.x86.avx.vtestz.ps.256(<8 x float> %{{.*}}, <8 
x float> %{{.*}})
   return _mm256_testz_ps(A, B);
 }
+TEST_CONSTEXPR(_mm256_testz_ps((__m256)(__v8sf){-1, -2, -3, -4, -5, -6, -7, 
8},(__m256)(__v8sf){1, 2, 3, 4, 5, 6, 7, -8}) == 1);
+TEST_CONSTEXPR(_mm256_testz_ps((__m256)(__v8sf){0,0,0,0,0,0,0,-1.00001},(__m256)(__v8sf){1,
 2, 3, 4, 5, 6, 7, -8}) == 0);
+TEST_CONSTEXPR(_mm256_testz_ps((__m256)(__v8sf){0,-0.00002,0,0,0,0,0,-1.00001},(__m256)(__v8sf){1,
 2, 3, -4, 5, -6, -7, 8}) == 1);
 
 int test_mm256_testz_si256(__m256i A, __m256i B) {
   // CHECK-LABEL: test_mm256_testz_si256
   // CHECK: call {{.*}}i32 @llvm.x86.avx.ptestz.256(<4 x i64> %{{.*}}, <4 x 
i64> %{{.*}})
   return _mm256_testz_si256(A, B);
 }
+TEST_CONSTEXPR(_mm256_testz_si256((__m256i)(__v4di){0,0,0,0}, 
(__m256i)(__v4di){0,0,0,0}) == 1);
+TEST_CONSTEXPR(_mm256_testz_si256((__m256i)(__v4di){0,0,-1,0}, 
(__m256i)(__v4di){0,0,-1,0}) == 0);
+TEST_CONSTEXPR(_mm256_testz_si256((__m256i)(__v4di){-1,0,1,0}, 
(__m256i)(__v4di){0,-1,0,1}) == 1);
 
 __m256 test_mm256_undefined_ps(void) {
   // X64-LABEL: test_mm256_undefined_ps
diff --git a/clang/test/CodeGen/X86/sse41-builtins.c 
b/clang/test/CodeGen/X86/sse41-builtins.c
index 3c3724643870e..a3e1fcc8426fa 100644
--- a/clang/test/CodeGen/X86/sse41-builtins.c
+++ b/clang/test/CodeGen/X86/sse41-builtins.c
@@ -442,33 +442,53 @@ int test_mm_test_all_ones(__m128i x) {
   // CHECK: call {{.*}}i32 @llvm.x86.sse41.ptestc(<2 x i64> %{{.*}}, <2 x i64> 
%{{.*}})
   return _mm_test_all_ones(x);
 }
+TEST_CONSTEXPR(_mm_test_all_ones(((__m128i)(__v2di){-1, -1})) == 1);
+TEST_CONSTEXPR(_mm_test_all_ones(((__m128i)(__v2di){-1,  0})) == 0);
+TEST_CONSTEXPR(_mm_test_all_ones(((__m128i)(__v4si){-1, -1, -1, 0x7FFFFFFF})) 
== 0);
 
 int test_mm_test_all_zeros(__m128i x, __m128i y) {
   // CHECK-LABEL: test_mm_test_all_zeros
   // CHECK: call {{.*}}i32 @llvm.x86.sse41.ptestz(<2 x i64> %{{.*}}, <2 x i64> 
%{{.*}})
   return _mm_test_all_zeros(x, y);
 }
+TEST_CONSTEXPR(_mm_test_all_zeros(((__m128i)(__v2di){0,0}), 
((__m128i)(__v2di){0,0})) == 1);
+TEST_CONSTEXPR(_mm_test_all_zeros(((__m128i)(__v2di){0xFF00,0}), 
((__m128i)(__v2di){0x00FF,0})) == 1);
+TEST_CONSTEXPR(_mm_test_all_zeros(((__m128i)(__v2di){1,0}), 
((__m128i)(__v2di){-1,0})) == 0);
+TEST_CONSTEXPR(_mm_test_all_zeros(((__m128i)(__v2di){0,1}), 
((__m128i)(__v2di){0,-1})) == 0);
 
 int test_mm_test_mix_ones_zeros(__m128i x, __m128i y) {
   // CHECK-LABEL: test_mm_test_mix_ones_zeros
   // CHECK: call {{.*}}i32 @llvm.x86.sse41.ptestnzc(<2 x i64> %{{.*}}, <2 x 
i64> %{{.*}})
   return _mm_test_mix_ones_zeros(x, y);
 }
+TEST_CONSTEXPR(_mm_test_mix_ones_zeros(((__m128i)(__v2di){0xFF, 0}), 
((__m128i)(__v2di){0xF0, 1})) == 1);
+TEST_CONSTEXPR(_mm_test_mix_ones_zeros(((__m128i)(__v2di){0xF0, 0}), 
((__m128i)(__v2di){0x0F, 0})) == 0);
+TEST_CONSTEXPR(_mm_test_mix_ones_zeros(((__m128i)(__v2di){-1, -1}), 
((__m128i)(__v2di){1, 0})) == 0);
+TEST_CONSTEXPR(_mm_test_mix_ones_zeros(((__m128i)(__v2di){0, 0}), 
((__m128i)(__v2di){0, 0})) == 0);
 
 int test_mm_testc_si128(__m128i x, __m128i y) {
   // CHECK-LABEL: test_mm_testc_si128
   // CHECK: call {{.*}}i32 @llvm.x86.sse41.ptestc(<2 x i64> %{{.*}}, <2 x i64> 
%{{.*}})
   return _mm_testc_si128(x, y);
 }
+TEST_CONSTEXPR(_mm_testc_si128((__m128i)(__v2di){0,0}, (__m128i)(__v2di){0,0}) 
== 1);
+TEST_CONSTEXPR(_mm_testc_si128((__m128i)(__v2di){1,0}, 
(__m128i)(__v2di){-1,0}) == 0);
+TEST_CONSTEXPR(_mm_testc_si128((__m128i)(__v2di){0,-1}, 
(__m128i)(__v2di){0,1}) == 1);
 
 int test_mm_testnzc_si128(__m128i x, __m128i y) {
   // CHECK-LABEL: test_mm_testnzc_si128
   // CHECK: call {{.*}}i32 @llvm.x86.sse41.ptestnzc(<2 x i64> %{{.*}}, <2 x 
i64> %{{.*}})
   return _mm_testnzc_si128(x, y);
 }
+TEST_CONSTEXPR(_mm_testnzc_si128((__m128i)(__v2di){3,0}, 
(__m128i)(__v2di){1,1}) == 1);
+TEST_CONSTEXPR(_mm_testnzc_si128((__m128i)(__v2di){32,-1}, 
(__m128i)(__v2di){15,0}) == 0);
+TEST_CONSTEXPR(_mm_testnzc_si128((__m128i)(__v2di){0,999}, 
(__m128i)(__v2di){0,999}) == 0);
 
 int test_mm_testz_si128(__m128i x, __m128i y) {
   // CHECK-LABEL: test_mm_testz_si128
   // CHECK: call {{.*}}i32 @llvm.x86.sse41.ptestz(<2 x i64> %{{.*}}, <2 x i64> 
%{{.*}})
   return _mm_testz_si128(x, y);
 }
+TEST_CONSTEXPR(_mm_testz_si128((__m128i)(__v2di){0,0}, (__m128i)(__v2di){0,0}) 
== 1);
+TEST_CONSTEXPR(_mm_testz_si128((__m128i)(__v2di){1,0}, 
(__m128i)(__v2di){-1,0}) == 0);
+TEST_CONSTEXPR(_mm_testz_si128((__m128i)(__v2di){1,0}, (__m128i)(__v2di){0,1}) 
== 1);

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