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r600/sfn: deduplicate fixpoint loop for optimizers

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Signed-off-by: Gert Wollny <gert.wollny@collabora.com>
Assisted-by: Copilot (auto mode)
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/41945>
This commit is contained in:
Gert Wollny 2026-04-26 22:47:43 +02:00 • committed by Marge Bot
parent 0f97e4aa79
commit 00801796ae
1 changed files with 23 additions and 37 deletions
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60
src/gallium/drivers/r600/sfn/sfn_optimizer.cpp
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@ -33,6 +33,22 @@ log_shader_dump(const Shader& shader, const char *header)
}
}
template <typename Visitor>
static bool
run_visitor_to_fixpoint(Shader& shader, Visitor& visitor, const char *dump_header = nullptr)
{
do {
visitor.progress = false;
for (auto b : shader.func())
b->accept(visitor);
} while (visitor.progress);
if (dump_header)
log_shader_dump(shader, dump_header);
return visitor.progress;
}
bool
optimize(Shader& shader)
{
@ -89,22 +105,7 @@ bool
dead_code_elimination(Shader& shader)
{
DCEVisitor dce;
do {
sfn_log << SfnLog::opt << "start dce run\n";
dce.progress = false;
for (auto& b : shader.func())
b->accept(dce);
sfn_log << SfnLog::opt << "finished dce run\n\n";
} while (dce.progress);
log_shader_dump(shader, "Shader after DCE\n");
return dce.progress;
return run_visitor_to_fixpoint(shader, dce, "Shader after DCE\n");
}
DCEVisitor::DCEVisitor():
@ -276,34 +277,19 @@ public:
bool
copy_propagation_fwd(Shader& shader)
{
auto& root = shader.func();
CopyPropFwdVisitor copy_prop(shader.value_factory());
do {
copy_prop.progress = false;
for (auto b : root)
b->accept(copy_prop);
} while (copy_prop.progress);
log_shader_dump(shader, "Shader after Copy Prop forward\n");
return copy_prop.progress;
return run_visitor_to_fixpoint(shader,
copy_prop,
"Shader after Copy Prop forward\n");
}
bool
copy_propagation_backward(Shader& shader)
{
CopyPropBackVisitor copy_prop;
do {
copy_prop.progress = false;
for (auto b : shader.func())
b->accept(copy_prop);
} while (copy_prop.progress);
log_shader_dump(shader, "Shader after Copy Prop backwards\n");
return copy_prop.progress;
return run_visitor_to_fixpoint(shader,
copy_prop,
"Shader after Copy Prop backwards\n");
}
CopyPropFwdVisitor::CopyPropFwdVisitor(ValueFactory& vf):