From bd1689ae8986fce29b64498dc6f959ff609d8288 Mon Sep 17 00:00:00 2001
From: Martin Wickham <spexguy070@gmail.com>
Date: Sun, 11 Jul 2021 19:16:57 -0500
Subject: [PATCH] Remove Stage1AirInst::owner_bb, use zir owner instead.

---
 src/stage1/all_types.hpp | 1 -
 src/stage1/ir.cpp        | 4 +---
 2 files changed, 1 insertion(+), 4 deletions(-)

diff --git a/src/stage1/all_types.hpp b/src/stage1/all_types.hpp
index fa201f6bdf..c673922335 100644
--- a/src/stage1/all_types.hpp
+++ b/src/stage1/all_types.hpp
@@ -2744,7 +2744,6 @@ struct Stage1AirInst {
 
     LLVMValueRef llvm_value;
     ZigValue *value;
-    Stage1AirBasicBlock *owner_bb;
     // Nearly any instruction can have to be stored as a local variable before suspending
     // and then loaded after resuming, in case there is an expression with a suspend point
     // in it, such as: x + await y
diff --git a/src/stage1/ir.cpp b/src/stage1/ir.cpp
index e92512e9ca..1b7f500b6d 100644
--- a/src/stage1/ir.cpp
+++ b/src/stage1/ir.cpp
@@ -1116,7 +1116,6 @@ static T *ir_create_inst_gen(IrBuilderGen *irb, Scope *scope, AstNode *source_no
     special_instruction->base.scope = scope;
     special_instruction->base.source_node = source_node;
     special_instruction->base.debug_id = exec_next_debug_id_gen(irb->exec);
-    special_instruction->base.owner_bb = irb->current_basic_block;
     special_instruction->base.value = irb->codegen->pass1_arena->create<ZigValue>();
     return special_instruction;
 }
@@ -1128,7 +1127,6 @@ static T *ir_create_inst_noval(IrBuilderGen *irb, Scope *scope, AstNode *source_
     special_instruction->base.scope = scope;
     special_instruction->base.source_node = source_node;
     special_instruction->base.debug_id = exec_next_debug_id_gen(irb->exec);
-    special_instruction->base.owner_bb = irb->current_basic_block;
     return special_instruction;
 }
 
@@ -14024,7 +14022,7 @@ static Stage1AirInst *ir_analyze_instruction_phi(IrAnalyze *ira, Stage1ZirInstPh
                 instrs_to_move.append(ira->new_irb.current_basic_block->instruction_list.pop());
             }
             if (instrs_to_move.length != 0) {
-                Stage1AirBasicBlock *predecessor = peer_parent->base.source_instruction->child->owner_bb;
+                Stage1AirBasicBlock *predecessor = peer_parent->base.source_instruction->owner_bb->child;
                 Stage1AirInst *branch_instruction = predecessor->instruction_list.pop();
                 src_assert(branch_instruction->value->type->id == ZigTypeIdUnreachable,
                         phi_instruction->base.source_node);