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Fix #1120 code generation

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This commit is contained in:
gingerBill
2021-09-08 11:49:07 +01:00
parent 3754af62d6
commit 83bd7c73c4
1 changed files with 52 additions and 5 deletions
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57
src/llvm_backend_expr.cpp
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@@ -51,14 +51,61 @@ lbValue lb_emit_logical_binary_expr(lbProcedure *p, TokenKind op, Ast *left, Ast
incoming_blocks[done->preds.count] = p->curr_block->block;
lb_emit_jump(p, done);
lb_start_block(p, done);
lb_start_block(p, done);
LLVMTypeRef dst_type = lb_type(m, type);
LLVMValueRef phi = nullptr;
GB_ASSERT(incoming_values.count == incoming_blocks.count);
GB_ASSERT(incoming_values.count > 0);
LLVMTypeRef phi_type = nullptr;
for_array(i, incoming_values) {
LLVMValueRef incoming_value = incoming_values[i];
if (!LLVMIsConstant(incoming_value)) {
phi_type = LLVMTypeOf(incoming_value);
break;
}
}
if (phi_type == nullptr) {
phi = LLVMBuildPhi(p->builder, dst_type, "");
LLVMAddIncoming(phi, incoming_values.data, incoming_blocks.data, cast(unsigned)incoming_values.count);
goto phi_end;
}
for_array(i, incoming_values) {
LLVMValueRef incoming_value = incoming_values[i];
LLVMTypeRef incoming_type = LLVMTypeOf(incoming_value);
if (phi_type != incoming_type) {
GB_ASSERT_MSG(LLVMIsConstant(incoming_value), "%s vs %s", LLVMPrintTypeToString(phi_type), LLVMPrintTypeToString(incoming_type));
bool ok = !!LLVMConstIntGetZExtValue(incoming_value);
incoming_values[i] = LLVMConstInt(phi_type, ok, false);
}
}
phi = LLVMBuildPhi(p->builder, phi_type, "");
LLVMAddIncoming(phi, incoming_values.data, incoming_blocks.data, cast(unsigned)incoming_values.count);
LLVMTypeRef i1 = LLVMInt1TypeInContext(m->ctx);
if ((phi_type == i1) ^ (dst_type == i1)) {
if (phi_type == i1) {
phi = LLVMBuildZExt(p->builder, phi, dst_type, "");
} else {
phi = LLVMBuildTruncOrBitCast(p->builder, phi, dst_type, "");
}
} else if (lb_sizeof(phi_type) < lb_sizeof(dst_type)) {
phi = LLVMBuildZExt(p->builder, phi, dst_type, "");
} else {
phi = LLVMBuildTruncOrBitCast(p->builder, phi, dst_type, "");
}
phi_end:;
lbValue res = {};
res.type = type;
res.value = LLVMBuildPhi(p->builder, lb_type(m, type), "");
GB_ASSERT(incoming_values.count == incoming_blocks.count);
LLVMAddIncoming(res.value, incoming_values.data, incoming_blocks.data, cast(unsigned)incoming_values.count);
res.value = phi;
return res;
}