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std: improve rand implementation and API

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This commit is contained in:
Andrew Kelley
2016-07-26 23:51:58 -07:00
parent bc81ddfea6
commit 06c4b35eb1
9 changed files with 201 additions and 80 deletions
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25
src/codegen.cpp
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@@ -1005,6 +1005,31 @@ static LLVMValueRef gen_cast_expr(CodeGen *g, AstNode *node) {
LLVMBuildStore(g->builder, new_len, dest_len_ptr);
return cast_expr->tmp_ptr;
}
case CastOpBytesToSlice:
{
assert(cast_expr->tmp_ptr);
assert(wanted_type->id == TypeTableEntryIdStruct);
assert(wanted_type->data.structure.is_slice);
assert(actual_type->id == TypeTableEntryIdArray);
TypeTableEntry *wanted_pointer_type = wanted_type->data.structure.fields[0].type_entry;
TypeTableEntry *wanted_child_type = wanted_pointer_type->data.pointer.child_type;
set_debug_source_node(g, node);
int wanted_ptr_index = wanted_type->data.structure.fields[0].gen_index;
LLVMValueRef dest_ptr_ptr = LLVMBuildStructGEP(g->builder, cast_expr->tmp_ptr, wanted_ptr_index, "");
LLVMValueRef src_ptr_casted = LLVMBuildBitCast(g->builder, expr_val, wanted_pointer_type->type_ref, "");
LLVMBuildStore(g->builder, src_ptr_casted, dest_ptr_ptr);
int wanted_len_index = wanted_type->data.structure.fields[1].gen_index;
LLVMValueRef len_ptr = LLVMBuildStructGEP(g->builder, cast_expr->tmp_ptr, wanted_len_index, "");
LLVMValueRef len_val = LLVMConstInt(g->builtin_types.entry_usize->type_ref,
actual_type->data.array.len / type_size(g, wanted_child_type), false);
LLVMBuildStore(g->builder, len_val, len_ptr);
return cast_expr->tmp_ptr;
}
case CastOpIntToFloat: