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lazy analysis of top level declarations

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previously, we had lazy analysis of top level declarations,
but if a declaration was referenced within a compile-time
if or switch statement, that would still add the top
level declaration to the resolution queue.

now we have a declref ir instruction, which is only resolved
if we analyze the instruction. this takes into account comptime
branching.

closes #270
This commit is contained in:
Andrew Kelley
2017-03-18 11:24:58 -04:00
parent af536ac343
commit fa7c64ccd5
4 changed files with 127 additions and 55 deletions
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10
src/ir_print.cpp
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@@ -849,6 +849,13 @@ static void ir_print_set_global_section(IrPrint *irp, IrInstructionSetGlobalSect
fprintf(irp->f, ")");
}
static void ir_print_decl_ref(IrPrint *irp, IrInstructionDeclRef *instruction) {
const char *ptr_str = instruction->lval.is_ptr ? "ptr " : "";
const char *const_str = instruction->lval.is_const ? "const " : "";
const char *volatile_str = instruction->lval.is_volatile ? "volatile " : "";
fprintf(irp->f, "declref %s%s%s%s", const_str, volatile_str, ptr_str, buf_ptr(instruction->tld->name));
}
static void ir_print_instruction(IrPrint *irp, IrInstruction *instruction) {
ir_print_prefix(irp, instruction);
switch (instruction->id) {
@@ -1121,6 +1128,9 @@ static void ir_print_instruction(IrPrint *irp, IrInstruction *instruction) {
case IrInstructionIdSetGlobalSection:
ir_print_set_global_section(irp, (IrInstructionSetGlobalSection *)instruction);
break;
case IrInstructionIdDeclRef:
ir_print_decl_ref(irp, (IrInstructionDeclRef *)instruction);
break;
}
fprintf(irp->f, "\n");
}