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Fix #1015

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This commit is contained in:
gingerBill
2021-06-14 13:26:28 +01:00
parent 3e7aabe6d8
commit 4b8cbb5a3b
1 changed files with 15 additions and 11 deletions
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26
src/llvm_backend.cpp
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@@ -4817,6 +4817,18 @@ void lb_build_switch_stmt(lbProcedure *p, AstSwitchStmt *ss, Scope *scope) {
bool default_found = false;
bool is_trivial = lb_switch_stmt_can_be_trivial_jump_table(ss, &default_found);
auto body_blocks = slice_make<lbBlock *>(permanent_allocator(), body->stmts.count);
for_array(i, body->stmts) {
Ast *clause = body->stmts[i];
ast_node(cc, CaseClause, clause);
body_blocks[i] = lb_create_block(p, cc->list.count == 0 ? "switch.default.body" : "switch.case.body");
if (cc->list.count == 0) {
default_block = body_blocks[i];
}
}
LLVMValueRef switch_instr = nullptr;
if (is_trivial) {
isize num_cases = 0;
@@ -4826,10 +4838,6 @@ void lb_build_switch_stmt(lbProcedure *p, AstSwitchStmt *ss, Scope *scope) {
num_cases += cc->list.count;
}
if (default_found) {
default_block = lb_create_block(p, "switch.default.body");
}
LLVMBasicBlockRef end_block = done->block;
if (default_block) {
end_block = default_block->block;
@@ -4838,19 +4846,15 @@ void lb_build_switch_stmt(lbProcedure *p, AstSwitchStmt *ss, Scope *scope) {
switch_instr = LLVMBuildSwitch(p->builder, tag.value, end_block, cast(unsigned)num_cases);
}
for_array(i, body->stmts) {
Ast *clause = body->stmts[i];
ast_node(cc, CaseClause, clause);
lbBlock *body = fall;
if (body == nullptr) {
body = lb_create_block(p, cc->list.count == 0 ? "switch.default.body" : "switch.case.body");
}
lbBlock *body = body_blocks[i];
fall = done;
if (i+1 < case_count) {
fall = lb_create_block(p, "switch.fall.body");
fall = body_blocks[i+1];
}
if (cc->list.count == 0) {