From 9bb3e008c9f4bbdd35c095b506c3a3312d17e383 Mon Sep 17 00:00:00 2001
From: ReinUsesLisp <reinuseslisp@airmail.cc>
Date: Tue, 18 May 2021 02:04:22 -0300
Subject: shader: Read branch conditions from an instruction
Fixes the identity removal pass.
---
.../frontend/maxwell/structured_control_flow.cpp | 9 +++------
1 file changed, 3 insertions(+), 6 deletions(-)
(limited to 'src/shader_recompiler/frontend/maxwell/structured_control_flow.cpp')
diff --git a/src/shader_recompiler/frontend/maxwell/structured_control_flow.cpp b/src/shader_recompiler/frontend/maxwell/structured_control_flow.cpp
index 83554a9539..ebe5c2654e 100644
--- a/src/shader_recompiler/frontend/maxwell/structured_control_flow.cpp
+++ b/src/shader_recompiler/frontend/maxwell/structured_control_flow.cpp
@@ -703,8 +703,7 @@ private:
// Implement if header block
IR::IREmitter ir{*current_block};
- const IR::U1 cond{VisitExpr(ir, *stmt.cond)};
- ir.DummyReference(cond);
+ const IR::U1 cond{ir.ConditionRef(VisitExpr(ir, *stmt.cond))};
const size_t if_node_index{syntax_list.size()};
syntax_list.emplace_back();
@@ -754,8 +753,7 @@ private:
// The continue block is located at the end of the loop
IR::IREmitter ir{*continue_block};
- const IR::U1 cond{VisitExpr(ir, *stmt.cond)};
- ir.DummyReference(cond);
+ const IR::U1 cond{ir.ConditionRef(VisitExpr(ir, *stmt.cond))};
IR::Block* const body_block{syntax_list.at(body_block_index).data.block};
loop_header_block->AddBranch(body_block);
@@ -791,8 +789,7 @@ private:
IR::Block* const skip_block{MergeBlock(parent, stmt)};
IR::IREmitter ir{*current_block};
- const IR::U1 cond{VisitExpr(ir, *stmt.cond)};
- ir.DummyReference(cond);
+ const IR::U1 cond{ir.ConditionRef(VisitExpr(ir, *stmt.cond))};
current_block->AddBranch(break_block);
current_block->AddBranch(skip_block);
current_block = skip_block;
--
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