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[clang][bytecode] Implement __builtin_reduce_and #118289

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Merged
merged 1 commit into from
Dec 2, 2024
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[clang][bytecode] Implement __builtin_reduce_and #118289

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6 changes: 5 additions & 1 deletion clang/lib/AST/ByteCode/InterpBuiltin.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1700,7 +1700,7 @@ static bool interp__builtin_vector_reduce(InterpState &S, CodePtr OpPC,
PrimType ElemT = *S.getContext().classify(ElemType);
unsigned NumElems = Arg.getNumElems();

INT_TYPE_SWITCH(ElemT, {
INT_TYPE_SWITCH_NO_BOOL(ElemT, {
T Result = Arg.atIndex(0).deref<T>();
unsigned BitWidth = Result.bitWidth();
for (unsigned I = 1; I != NumElems; ++I) {
Expand All @@ -1723,6 +1723,9 @@ static bool interp__builtin_vector_reduce(InterpState &S, CodePtr OpPC,
Elem.toAPSInt(OverflowBits)));
return false;
}

} else if (ID == Builtin::BI__builtin_reduce_and) {
(void)T::bitAnd(Result, Elem, BitWidth, &Result);
} else {
llvm_unreachable("Unhandled vector reduce builtin");
}
Expand Down Expand Up @@ -2206,6 +2209,7 @@ bool InterpretBuiltin(InterpState &S, CodePtr OpPC, const Function *F,

case Builtin::BI__builtin_reduce_add:
case Builtin::BI__builtin_reduce_mul:
case Builtin::BI__builtin_reduce_and:
if (!interp__builtin_vector_reduce(S, OpPC, Frame, F, Call))
return false;
break;
Expand Down
16 changes: 16 additions & 0 deletions clang/test/AST/ByteCode/builtin-functions.cpp
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Expand Up @@ -1064,6 +1064,22 @@ namespace ReduceMul {
static_assert(__builtin_reduce_mul((vector4ulong){~0ULL, 1, 1, 2}) == ~0ULL - 1);
}

namespace ReduceAnd {
static_assert(__builtin_reduce_and((vector4char){}) == 0);
static_assert(__builtin_reduce_and((vector4char){(char)0x11, (char)0x22, (char)0x44, (char)0x88}) == 0);
static_assert(__builtin_reduce_and((vector4short){(short)0x1111, (short)0x2222, (short)0x4444, (short)0x8888}) == 0);
static_assert(__builtin_reduce_and((vector4int){(int)0x11111111, (int)0x22222222, (int)0x44444444, (int)0x88888888}) == 0);
#if __INT_WIDTH__ == 32
static_assert(__builtin_reduce_and((vector4long){(long long)0x1111111111111111L, (long long)0x2222222222222222L, (long long)0x4444444444444444L, (long long)0x8888888888888888L}) == 0L);
static_assert(__builtin_reduce_and((vector4char){(char)-1, (char)~0x22, (char)~0x44, (char)~0x88}) == 0x11);
static_assert(__builtin_reduce_and((vector4short){(short)~0x1111, (short)-1, (short)~0x4444, (short)~0x8888}) == 0x2222);
static_assert(__builtin_reduce_and((vector4int){(int)~0x11111111, (int)~0x22222222, (int)-1, (int)~0x88888888}) == 0x44444444);
static_assert(__builtin_reduce_and((vector4long){(long long)~0x1111111111111111L, (long long)~0x2222222222222222L, (long long)~0x4444444444444444L, (long long)-1}) == 0x8888888888888888L);
static_assert(__builtin_reduce_and((vector4uint){0x11111111U, 0x22222222U, 0x44444444U, 0x88888888U}) == 0U);
static_assert(__builtin_reduce_and((vector4ulong){0x1111111111111111UL, 0x2222222222222222UL, 0x4444444444444444UL, 0x8888888888888888UL}) == 0L);
#endif
}

namespace BuiltinMemcpy {
constexpr int simple() {
int a = 12;
Expand Down