From d923c47f745a96f5916af766dcb1c7152021b960 Mon Sep 17 00:00:00 2001
From: Anton Romanov <anton.romanov@syntacore.com>
Date: Mon, 19 Feb 2024 14:07:25 +0300
Subject: riscv64: Create InstructionSimplifierRiscv64, ShiftAdd

Create InstructionSimplifierRiscv64 optimization.
Replace Shl (1|2|3) and Add with Riscv64ShiftAdd IR instruction.

By compiling with dex2oat all the methods of applications below I got:
Facebook: 45 cases
TikTok: 26 cases
YouTube: 19 cases of the pattern.

Test: art/test/testrunner/testrunner.py --target --64 --ndebug --optimizing

Change-Id: I88903450d998983bb2a628942112d7518099c3f5
---
 compiler/optimizing/optimizing_compiler.cc | 1 +
 1 file changed, 1 insertion(+)

(limited to 'compiler/optimizing/optimizing_compiler.cc')

diff --git a/compiler/optimizing/optimizing_compiler.cc b/compiler/optimizing/optimizing_compiler.cc
index f532681527..763dc88e8a 100644
--- a/compiler/optimizing/optimizing_compiler.cc
+++ b/compiler/optimizing/optimizing_compiler.cc
@@ -535,6 +535,7 @@ bool OptimizingCompiler::RunArchOptimizations(HGraph* graph,
 #if defined(ART_ENABLE_CODEGEN_riscv64)
     case InstructionSet::kRiscv64: {
       OptimizationDef riscv64_optimizations[] = {
+          OptDef(OptimizationPass::kInstructionSimplifierRiscv64),
           OptDef(OptimizationPass::kSideEffectsAnalysis),
           OptDef(OptimizationPass::kGlobalValueNumbering, "GVN$after_arch"),
           OptDef(OptimizationPass::kCriticalNativeAbiFixupRiscv64)
-- 
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