From 63ad856afa353767415f96cfacaf8a134272031f Mon Sep 17 00:00:00 2001
From: izcarti <191240052+izcarti@users.noreply.github.com>
Date: Fri, 9 Oct 2026 19:41:09 +0100
Subject: [PATCH] PPU LLVM: Estimate a whole vector per call

---
 rpcs3/Emu/Cell/PPUThread.cpp     | 17 +++++++++++++----
 rpcs3/Emu/Cell/PPUTranslator.cpp | 14 +++++---------
 2 files changed, 18 insertions(+), 13 deletions(-)

diff --git a/rpcs3/Emu/Cell/PPUThread.cpp b/rpcs3/Emu/Cell/PPUThread.cpp
index 2b0adb2470..551a8da0b0 100644
--- a/rpcs3/Emu/Cell/PPUThread.cpp
+++ b/rpcs3/Emu/Cell/PPUThread.cpp
@@ -4888,6 +4888,15 @@ extern void ppu_initialize()
 	}
 }
 
+template <u32 (*Estimate)(u32, bool)>
+static void ppu_vec_estimate(v128& v, u32 nj)
+{
+	for (u32 i = 0; i < 4; i++)
+	{
+		v._u32[i] = Estimate(v._u32[i], nj != 0);
+	}
+}
+
 bool ppu_initialize(const ppu_module<lv2_obj>& info, bool check_only, u64 file_size)
 {
 	ppu_log.notice("Entering ppu_initialize(const ppu_module&..)");
@@ -4968,10 +4977,10 @@ bool ppu_initialize(const ppu_module<lv2_obj>& info, bool check_only, u64 file_s
 			{ "__escape", reinterpret_cast<u64>(+ppu_escape) },
 			{ "__read_maybe_mmio32", reinterpret_cast<u64>(+ppu_read_mmio_aware_u32) },
 			{ "__write_maybe_mmio32", reinterpret_cast<u64>(+ppu_write_mmio_aware_u32) },
-			{ "__vrefp", reinterpret_cast<u64>(+[](u32 x, u32 nj) { return ppu_vrefp(x, nj != 0); }) },
-			{ "__vrsqrtefp", reinterpret_cast<u64>(+[](u32 x, u32 nj) { return ppu_vrsqrtefp(x, nj != 0); }) },
-			{ "__vexptefp", reinterpret_cast<u64>(+[](u32 x, u32 nj) { return ppu_vexptefp(x, nj != 0); }) },
-			{ "__vlogefp", reinterpret_cast<u64>(+[](u32 x, u32 nj) { return ppu_vlogefp(x, nj != 0); }) },
+			{ "__vrefp", reinterpret_cast<u64>(&ppu_vec_estimate<ppu_vrefp>) },
+			{ "__vrsqrtefp", reinterpret_cast<u64>(&ppu_vec_estimate<ppu_vrsqrtefp>) },
+			{ "__vexptefp", reinterpret_cast<u64>(&ppu_vec_estimate<ppu_vexptefp>) },
+			{ "__vlogefp", reinterpret_cast<u64>(&ppu_vec_estimate<ppu_vlogefp>) },
 		};
 
 		for (u64 index = 0; index < 1024; index++)
diff --git a/rpcs3/Emu/Cell/PPUTranslator.cpp b/rpcs3/Emu/Cell/PPUTranslator.cpp
index b5fdb23711..386ab31da3 100644
--- a/rpcs3/Emu/Cell/PPUTranslator.cpp
+++ b/rpcs3/Emu/Cell/PPUTranslator.cpp
@@ -491,16 +491,12 @@ Value* PPUTranslator::VecHandleResult(Value* val, bool flush_denormals_manually)
 
 Value* PPUTranslator::VecEstimate(StringRef name, u32 vr)
 {
-	const auto b = GetVr(vr, VrType::vi32);
-	const auto nj = ZExt(RegLoad(m_nj), GetType<u32>());
-	Value* result = GetUndef<u32[4]>();
+	auto& entry = m_function->getEntryBlock();
+	const auto data = IRBuilder<>(&entry, entry.getFirstInsertionPt()).CreateAlloca(GetType<u32[4]>());
 
-	for (u32 i = 0; i < 4; i++)
-	{
-		result = m_ir->CreateInsertElement(result, Call(GetType<u32>(), m_pure_attr, name, m_ir->CreateExtractElement(b, i), nj), i);
-	}
-
-	return result;
+	m_ir->CreateStore(GetVr(vr, VrType::vi32), data);
+	Call(GetType<void>(), name, data, ZExt(RegLoad(m_nj), GetType<u32>()));
+	return m_ir->CreateLoad(GetType<u32[4]>(), data);
 }
 
 Value* PPUTranslator::GetAddr(u64 _add)