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Add llvm_vector_reduce_add

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This commit is contained in:
gingerBill
2021-10-20 12:48:48 +01:00
parent 0fd525d778
commit 1bfbed0e02
2 changed files with 43 additions and 1 deletions
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41
src/llvm_backend_utility.cpp
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@@ -1544,4 +1544,45 @@ LLVMValueRef llvm_splat(lbProcedure *p, LLVMValueRef value, unsigned count) {
}
LLVMValueRef mask = llvm_mask_zero(p->module, count);
return LLVMBuildShuffleVector(p->builder, single, LLVMGetUndef(LLVMTypeOf(single)), mask, "");
}
LLVMValueRef llvm_vector_reduce_add(lbProcedure *p, LLVMValueRef value) {
LLVMTypeRef type = LLVMTypeOf(value);
GB_ASSERT(LLVMGetTypeKind(type) == LLVMVectorTypeKind);
LLVMTypeRef elem = LLVMGetElementType(type);
char const *name = nullptr;
i32 value_offset = 0;
i32 value_count = 0;
switch (LLVMGetTypeKind(elem)) {
case LLVMHalfTypeKind:
case LLVMFloatTypeKind:
case LLVMDoubleTypeKind:
name = "llvm.vector.reduce.fadd";
value_offset = 0;
value_count = 2;
break;
case LLVMIntegerTypeKind:
name = "llvm.vector.reduce.add";
value_offset = 1;
value_count = 1;
break;
default:
GB_PANIC("invalid vector type %s", LLVMPrintTypeToString(type));
break;
}
unsigned id = LLVMLookupIntrinsicID(name, gb_strlen(name));
GB_ASSERT_MSG(id != 0, "Unable to find %s", name);
LLVMTypeRef types[1] = {};
types[0] = elem;
LLVMValueRef ip = LLVMGetIntrinsicDeclaration(p->module->mod, id, types, gb_count_of(types));
LLVMValueRef values[2] = {};
values[0] = LLVMConstNull(elem);
values[1] = value;
LLVMValueRef call = LLVMBuildCall(p->builder, ip, values+value_offset, value_count, "");
return call;
}