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shader: Constant propagation and global memory to storage buffer

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This commit is contained in:
ReinUsesLisp 2021-02-05 05:58:02 -03:00 • committed by ameerj
parent d24a16045f
commit e81739493a
17 changed files with 652 additions and 63 deletions
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28
src/shader_recompiler/ir_opt/identity_removal_pass.cpp
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@ -10,22 +10,24 @@
namespace Shader::Optimization {
void IdentityRemovalPass(IR::Block& block) {
void IdentityRemovalPass(IR::Function& function) {
std::vector<IR::Inst*> to_invalidate;
for (auto inst = block.begin(); inst != block.end();) {
const size_t num_args{inst->NumArgs()};
for (size_t i = 0; i < num_args; ++i) {
IR::Value arg;
while ((arg = inst->Arg(i)).IsIdentity()) {
inst->SetArg(i, arg.Inst()->Arg(0));
for (auto& block : function.blocks) {
for (auto inst = block->begin(); inst != block->end();) {
const size_t num_args{inst->NumArgs()};
for (size_t i = 0; i < num_args; ++i) {
IR::Value arg;
while ((arg = inst->Arg(i)).IsIdentity()) {
inst->SetArg(i, arg.Inst()->Arg(0));
}
}
if (inst->Opcode() == IR::Opcode::Identity || inst->Opcode() == IR::Opcode::Void) {
to_invalidate.push_back(&*inst);
inst = block->Instructions().erase(inst);
} else {
++inst;
}
}
if (inst->Opcode() == IR::Opcode::Identity || inst->Opcode() == IR::Opcode::Void) {
to_invalidate.push_back(&*inst);
inst = block.Instructions().erase(inst);
} else {
++inst;
}
}
for (IR::Inst* const inst : to_invalidate) {