[dynarmic] avoid stable_vector<> reallocations for shared labels (#3717)

this reduces some overhead due to frequent reallocations

Signed-off-by: lizzie <lizzie@eden-emu.dev>

Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/3717
Reviewed-by: Maufeat <sahyno1996@gmail.com>
Reviewed-by: CamilleLaVey <camillelavey99@gmail.com>
Co-authored-by: lizzie <lizzie@eden-emu.dev>
Co-committed-by: lizzie <lizzie@eden-emu.dev>

10 files changed, 163 insertions, 163 deletions

diff --git a/src/dynarmic/src/dynarmic/backend/x64/a32_emit_x64.cpp b/src/dynarmic/src/dynarmic/backend/x64/a32_emit_x64.cpp
index 049a58432e..bbbecada63 100644
--- a/src/dynarmic/src/dynarmic/backend/x64/a32_emit_x64.cpp
+++ b/src/dynarmic/src/dynarmic/backend/x64/a32_emit_x64.cpp
@@ -59,8 +59,10 @@ static Xbyak::Address MJitStateExtReg(A32::ExtReg reg) {
     UNREACHABLE();
 }
 
-A32EmitContext::A32EmitContext(const A32::UserConfig& conf, RegAlloc& reg_alloc, IR::Block& block)
-        : EmitContext(reg_alloc, block), conf(conf) {}
+A32EmitContext::A32EmitContext(const A32::UserConfig& conf, RegAlloc& reg_alloc, IR::Block& block, boost::container::stable_vector<Xbyak::Label>& shared_labels)
+    : EmitContext(reg_alloc, block, shared_labels)
+    , conf(conf)
+{}
 
 A32::LocationDescriptor A32EmitContext::Location() const {
     return A32::LocationDescriptor{block.Location()};
@@ -109,7 +111,8 @@ A32EmitX64::BlockDescriptor A32EmitX64::Emit(IR::Block& block) {
             gprs.reset(size_t(HostLoc::R14));
         return gprs;
     }(), any_xmm);
-    A32EmitContext ctx{conf, reg_alloc, block};
+
+    A32EmitContext ctx{conf, reg_alloc, block, shared_labels};
 
     // Start emitting.
     code.align();
@@ -168,6 +171,7 @@ A32EmitX64::BlockDescriptor A32EmitX64::Emit(IR::Block& block) {
 
     auto const bdesc = RegisterBlock(descriptor, entrypoint, size);
     code.DisableWriting();
+    shared_labels.clear();
     return bdesc;
 }
 
diff --git a/src/dynarmic/src/dynarmic/backend/x64/a32_emit_x64.h b/src/dynarmic/src/dynarmic/backend/x64/a32_emit_x64.h
index 5ec78ff50e..8e97dc7737 100644
--- a/src/dynarmic/src/dynarmic/backend/x64/a32_emit_x64.h
+++ b/src/dynarmic/src/dynarmic/backend/x64/a32_emit_x64.h
@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 /* This file is part of the dynarmic project.
@@ -29,7 +29,7 @@ namespace Dynarmic::Backend::X64 {
 class RegAlloc;
 
 struct A32EmitContext final : public EmitContext {
-    A32EmitContext(const A32::UserConfig& conf, RegAlloc& reg_alloc, IR::Block& block);
+    A32EmitContext(const A32::UserConfig& conf, RegAlloc& reg_alloc, IR::Block& block, boost::container::stable_vector<Xbyak::Label>& shared_labels);
 
     A32::LocationDescriptor Location() const;
     A32::LocationDescriptor EndLocation() const;
@@ -130,6 +130,7 @@ public:
     ankerl::unordered_dense::map<std::tuple<bool, size_t, int, int>, void (*)()> write_fallbacks;
     ankerl::unordered_dense::map<std::tuple<bool, size_t, int, int>, void (*)()> exclusive_write_fallbacks;
     ankerl::unordered_dense::set<DoNotFastmemMarker> do_not_fastmem;
+    boost::container::stable_vector<Xbyak::Label> shared_labels;
     void (*memory_read_128)() = nullptr;   // Dummy
     void (*memory_write_128)() = nullptr;  // Dummy
     const void* terminal_handler_pop_rsb_hint;
diff --git a/src/dynarmic/src/dynarmic/backend/x64/a64_emit_x64.cpp b/src/dynarmic/src/dynarmic/backend/x64/a64_emit_x64.cpp
index 7c43ea1ab2..8edeb29aed 100644
--- a/src/dynarmic/src/dynarmic/backend/x64/a64_emit_x64.cpp
+++ b/src/dynarmic/src/dynarmic/backend/x64/a64_emit_x64.cpp
@@ -37,8 +37,10 @@ namespace Dynarmic::Backend::X64 {
 
 using namespace Xbyak::util;
 
-A64EmitContext::A64EmitContext(const A64::UserConfig& conf, RegAlloc& reg_alloc, IR::Block& block)
-        : EmitContext(reg_alloc, block), conf(conf) {}
+A64EmitContext::A64EmitContext(const A64::UserConfig& conf, RegAlloc& reg_alloc, IR::Block& block, boost::container::stable_vector<Xbyak::Label>& shared_labels)
+    : EmitContext(reg_alloc, block, shared_labels)
+    , conf(conf)
+{}
 
 A64::LocationDescriptor A64EmitContext::Location() const {
     return A64::LocationDescriptor{block.Location()};
@@ -83,7 +85,8 @@ A64EmitX64::BlockDescriptor A64EmitX64::Emit(IR::Block& block) noexcept {
             gprs.reset(size_t(HostLoc::R14));
         return gprs;
     }(), any_xmm};
-    A64EmitContext ctx{conf, reg_alloc, block};
+
+    A64EmitContext ctx{conf, reg_alloc, block, shared_labels};
 
     // Start emitting.
     code.align();
@@ -160,6 +163,7 @@ finish_this_inst:
 
     auto bdesc = RegisterBlock(descriptor, entrypoint, size);
     code.DisableWriting();
+    shared_labels.clear();
     return bdesc;
 }
 
diff --git a/src/dynarmic/src/dynarmic/backend/x64/a64_emit_x64.h b/src/dynarmic/src/dynarmic/backend/x64/a64_emit_x64.h
index dd556e36ce..d57b1d81b9 100644
--- a/src/dynarmic/src/dynarmic/backend/x64/a64_emit_x64.h
+++ b/src/dynarmic/src/dynarmic/backend/x64/a64_emit_x64.h
@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 /* This file is part of the dynarmic project.
@@ -27,7 +27,7 @@
 namespace Dynarmic::Backend::X64 {
 
 struct A64EmitContext final : public EmitContext {
-    A64EmitContext(const A64::UserConfig& conf, RegAlloc& reg_alloc, IR::Block& block);
+    A64EmitContext(const A64::UserConfig& conf, RegAlloc& reg_alloc, IR::Block& block, boost::container::stable_vector<Xbyak::Label>& shared_labels);
 
     A64::LocationDescriptor Location() const;
     bool IsSingleStep() const;
@@ -126,6 +126,7 @@ public:
     ankerl::unordered_dense::map<std::tuple<bool, size_t, int, int>, void (*)()> write_fallbacks;
     ankerl::unordered_dense::map<std::tuple<bool, size_t, int, int>, void (*)()> exclusive_write_fallbacks;
     ankerl::unordered_dense::set<DoNotFastmemMarker> do_not_fastmem;
+    boost::container::stable_vector<Xbyak::Label> shared_labels;
     const void* terminal_handler_pop_rsb_hint = nullptr;
     const void* terminal_handler_fast_dispatch_hint = nullptr;
     FastDispatchEntry& (*fast_dispatch_table_lookup)(u64) = nullptr;
diff --git a/src/dynarmic/src/dynarmic/backend/x64/emit_x64.cpp b/src/dynarmic/src/dynarmic/backend/x64/emit_x64.cpp
index 4e515fef2f..4ed198e09f 100644
--- a/src/dynarmic/src/dynarmic/backend/x64/emit_x64.cpp
+++ b/src/dynarmic/src/dynarmic/backend/x64/emit_x64.cpp
@@ -32,8 +32,11 @@ namespace Dynarmic::Backend::X64 {
 
 using namespace Xbyak::util;
 
-EmitContext::EmitContext(RegAlloc& reg_alloc, IR::Block& block)
-        : reg_alloc(reg_alloc), block(block) {}
+EmitContext::EmitContext(RegAlloc& reg_alloc, IR::Block& block, boost::container::stable_vector<Xbyak::Label>& shared_labels)
+    : reg_alloc(reg_alloc)
+    , block(block)
+    , shared_labels(shared_labels)
+{}
 
 EmitContext::~EmitContext() = default;
 
diff --git a/src/dynarmic/src/dynarmic/backend/x64/emit_x64.h b/src/dynarmic/src/dynarmic/backend/x64/emit_x64.h
index 301f4ffc89..619945e19a 100644
--- a/src/dynarmic/src/dynarmic/backend/x64/emit_x64.h
+++ b/src/dynarmic/src/dynarmic/backend/x64/emit_x64.h
@@ -16,11 +16,12 @@
 #include <type_traits>
 #include <vector>
 
-#include "dynarmic/mcl/bit.hpp"
 #include <ankerl/unordered_dense.h>
-#include "dynarmic/backend/x64/xbyak.h"
+#include <boost/container/stable_vector.hpp>
 #include <boost/container/small_vector.hpp>
 
+#include "dynarmic/backend/x64/xbyak.h"
+#include "dynarmic/mcl/bit.hpp"
 #include "dynarmic/backend/exception_handler.h"
 #include "dynarmic/backend/x64/reg_alloc.h"
 #include "dynarmic/common/fp/fpcr.h"
@@ -52,24 +53,23 @@ using VectorArray = std::array<T, A64FullVectorWidth::value / mcl::bitsizeof<T>>
 template<typename T>
 using HalfVectorArray = std::array<T, A64FullVectorWidth::value / mcl::bitsizeof<T> / 2>;
 
+using SharedLabel = Xbyak::Label*;
 struct EmitContext {
-    EmitContext(RegAlloc& reg_alloc, IR::Block& block);
+    EmitContext(RegAlloc& reg_alloc, IR::Block& block, boost::container::stable_vector<Xbyak::Label>& shared_labels);
     virtual ~EmitContext();
     virtual FP::FPCR FPCR(bool fpcr_controlled = true) const = 0;
     virtual bool HasOptimization(OptimizationFlag flag) const = 0;
 
-    RegAlloc& reg_alloc;
-    IR::Block& block;
+    [[nodiscard]] inline Xbyak::Label* GenSharedLabel() noexcept {
+        return &shared_labels.emplace_back();
+    }
 
     std::vector<std::function<void()>> deferred_emits;
+    RegAlloc& reg_alloc;
+    IR::Block& block;
+    boost::container::stable_vector<Xbyak::Label>& shared_labels;
 };
 
-using SharedLabel = std::shared_ptr<Xbyak::Label>;
-
-inline SharedLabel GenSharedLabel() {
-    return std::make_shared<Xbyak::Label>();
-}
-
 class EmitX64 {
 public:
     struct BlockDescriptor {
diff --git a/src/dynarmic/src/dynarmic/backend/x64/emit_x64_floating_point.cpp b/src/dynarmic/src/dynarmic/backend/x64/emit_x64_floating_point.cpp
index d073991fbe..6a3ab005f3 100644
--- a/src/dynarmic/src/dynarmic/backend/x64/emit_x64_floating_point.cpp
+++ b/src/dynarmic/src/dynarmic/backend/x64/emit_x64_floating_point.cpp
@@ -136,7 +136,7 @@ void ForceToDefaultNaN(BlockOfCode& code, Xbyak::Xmm result) {
 
 template<size_t fsize>
 SharedLabel ProcessNaN(BlockOfCode& code, EmitContext& ctx, Xbyak::Xmm a) {
-    SharedLabel nan = GenSharedLabel(), end = GenSharedLabel();
+    SharedLabel nan = ctx.GenSharedLabel(), end = ctx.GenSharedLabel();
 
     FCODE(ucomis)(a, a);
     code.jp(*nan, code.T_NEAR);
@@ -251,7 +251,7 @@ template<size_t fsize, typename Function>
 void FPTwoOp(BlockOfCode& code, EmitContext& ctx, IR::Inst* inst, Function fn) {
     auto args = ctx.reg_alloc.GetArgumentInfo(inst);
 
-    SharedLabel end = GenSharedLabel();
+    SharedLabel end = ctx.GenSharedLabel();
 
     Xbyak::Xmm result = ctx.reg_alloc.UseScratchXmm(code, args[0]);
 
@@ -304,7 +304,7 @@ void FPThreeOp(BlockOfCode& code, EmitContext& ctx, IR::Inst* inst, Function fn)
     const Xbyak::Xmm result = ctx.reg_alloc.ScratchXmm(code);
     const Xbyak::Reg64 tmp = ctx.reg_alloc.ScratchGpr(code);
 
-    SharedLabel end = GenSharedLabel(), nan = GenSharedLabel();
+    SharedLabel end = ctx.GenSharedLabel(), nan = ctx.GenSharedLabel();
 
     code.movaps(result, op1);
     if constexpr (std::is_member_function_pointer_v<Function>) {
@@ -413,7 +413,7 @@ static void EmitFPMinMax(BlockOfCode& code, EmitContext& ctx, IR::Inst* inst, bo
 
     DenormalsAreZero<fsize>(code, ctx, {result, operand});
 
-    SharedLabel equal = GenSharedLabel(), end = GenSharedLabel();
+    SharedLabel equal = ctx.GenSharedLabel(), end = ctx.GenSharedLabel();
 
     FCODE(ucomis)(result, operand);
     code.jz(*equal, code.T_NEAR);
@@ -484,7 +484,7 @@ static inline void EmitFPMinMaxNumeric(BlockOfCode& code, EmitContext& ctx, IR::
             }
         };
 
-        SharedLabel end = GenSharedLabel(), z = GenSharedLabel();
+        SharedLabel end = ctx.GenSharedLabel(), z = ctx.GenSharedLabel();
 
         FCODE(ucomis)(op1, op2);
         code.jz(*z, code.T_NEAR);
@@ -632,7 +632,7 @@ static void EmitFPMulAdd(BlockOfCode& code, EmitContext& ctx, IR::Inst* inst, bo
         }
 
         if (code.HasHostFeature(HostFeature::FMA | HostFeature::AVX)) {
-            SharedLabel fallback = GenSharedLabel(), end = GenSharedLabel();
+            SharedLabel fallback = ctx.GenSharedLabel(), end = ctx.GenSharedLabel();
 
             const Xbyak::Xmm operand1 = ctx.reg_alloc.UseXmm(code, args[0]);
             const Xbyak::Xmm operand2 = ctx.reg_alloc.UseXmm(code, args[1]);
@@ -843,7 +843,7 @@ static void EmitFPMulX(BlockOfCode& code, EmitContext& ctx, IR::Inst* inst) {
     const Xbyak::Xmm result = ctx.reg_alloc.ScratchXmm(code);
     const Xbyak::Reg64 tmp = do_default_nan ? INVALID_REG : ctx.reg_alloc.ScratchGpr(code);
 
-    SharedLabel end = GenSharedLabel(), nan = GenSharedLabel();
+    SharedLabel end = ctx.GenSharedLabel(), nan = ctx.GenSharedLabel();
 
     if (code.HasHostFeature(HostFeature::AVX)) {
         FCODE(vmuls)(result, op1, op2);
@@ -981,7 +981,7 @@ static void EmitFPRecipStepFused(BlockOfCode& code, EmitContext& ctx, IR::Inst*
         }
 
         if (code.HasHostFeature(HostFeature::FMA)) {
-            SharedLabel end = GenSharedLabel(), fallback = GenSharedLabel();
+            SharedLabel end = ctx.GenSharedLabel(), fallback = ctx.GenSharedLabel();
 
             const Xbyak::Xmm operand1 = ctx.reg_alloc.UseXmm(code, args[0]);
             const Xbyak::Xmm operand2 = ctx.reg_alloc.UseXmm(code, args[1]);
@@ -1129,7 +1129,7 @@ static void EmitFPRSqrtEstimate(BlockOfCode& code, EmitContext& ctx, IR::Inst* i
         const Xbyak::Xmm value = ctx.reg_alloc.ScratchXmm(code);
         [[maybe_unused]] const Xbyak::Reg32 tmp = ctx.reg_alloc.ScratchGpr(code).cvt32();
 
-        SharedLabel bad_values = GenSharedLabel(), end = GenSharedLabel();
+        SharedLabel bad_values = ctx.GenSharedLabel(), end = ctx.GenSharedLabel();
 
         code.movaps(value, operand);
 
@@ -1296,7 +1296,7 @@ static void EmitFPRSqrtStepFused(BlockOfCode& code, EmitContext& ctx, IR::Inst*
         }
 
         if (code.HasHostFeature(HostFeature::FMA | HostFeature::AVX)) {
-            SharedLabel end = GenSharedLabel(), fallback = GenSharedLabel();
+            SharedLabel end = ctx.GenSharedLabel(), fallback = ctx.GenSharedLabel();
 
             const Xbyak::Xmm operand1 = ctx.reg_alloc.UseXmm(code, args[0]);
             const Xbyak::Xmm operand2 = ctx.reg_alloc.UseXmm(code, args[1]);
@@ -1641,7 +1641,7 @@ static void EmitFPToFixed(BlockOfCode& code, EmitContext& ctx, IR::Inst* inst) {
                 const Xbyak::Xmm scratch = ctx.reg_alloc.ScratchXmm(code);
 
                 if (!unsigned_) {
-                    SharedLabel saturate_max = GenSharedLabel(), end = GenSharedLabel();
+                    SharedLabel saturate_max = ctx.GenSharedLabel(), end = ctx.GenSharedLabel();
 
                     ZeroIfNaN<64>(code, src, scratch);
 
diff --git a/src/dynarmic/src/dynarmic/backend/x64/emit_x64_memory.cpp.inc b/src/dynarmic/src/dynarmic/backend/x64/emit_x64_memory.cpp.inc
index 54fc595214..4fa14d504b 100644
--- a/src/dynarmic/src/dynarmic/backend/x64/emit_x64_memory.cpp.inc
+++ b/src/dynarmic/src/dynarmic/backend/x64/emit_x64_memory.cpp.inc
@@ -86,7 +86,7 @@ void AxxEmitX64::EmitMemoryRead(AxxEmitContext& ctx, IR::Inst* inst) {
 
     const auto wrapped_fn = read_fallbacks[std::make_tuple(ordered, bitsize, vaddr.getIdx(), value_idx)];
 
-    SharedLabel abort = GenSharedLabel(), end = GenSharedLabel();
+    SharedLabel abort = ctx.GenSharedLabel(), end = ctx.GenSharedLabel();
 
     if (fastmem_marker) {
         // Use fastmem
@@ -108,7 +108,7 @@ void AxxEmitX64::EmitMemoryRead(AxxEmitContext& ctx, IR::Inst* inst) {
                     conf.recompile_on_fastmem_failure,
                 });
 
-            EmitCheckMemoryAbort(ctx, inst, end.get());
+            EmitCheckMemoryAbort(ctx, inst, end);
             code.jmp(*end, code.T_NEAR);
         });
     } else {
@@ -120,7 +120,7 @@ void AxxEmitX64::EmitMemoryRead(AxxEmitContext& ctx, IR::Inst* inst) {
         ctx.deferred_emits.emplace_back([=, this, &ctx] {
             code.L(*abort);
             code.call(wrapped_fn);
-            EmitCheckMemoryAbort(ctx, inst, end.get());
+            EmitCheckMemoryAbort(ctx, inst, end);
             code.jmp(*end, code.T_NEAR);
         });
     }
@@ -173,7 +173,7 @@ void AxxEmitX64::EmitMemoryWrite(AxxEmitContext& ctx, IR::Inst* inst) {
 
     const auto wrapped_fn = write_fallbacks[std::make_tuple(ordered, bitsize, vaddr.getIdx(), value_idx)];
 
-    SharedLabel abort = GenSharedLabel(), end = GenSharedLabel();
+    SharedLabel abort = ctx.GenSharedLabel(), end = ctx.GenSharedLabel();
 
     if (fastmem_marker) {
         // Use fastmem
@@ -195,7 +195,7 @@ void AxxEmitX64::EmitMemoryWrite(AxxEmitContext& ctx, IR::Inst* inst) {
                     conf.recompile_on_fastmem_failure,
                 });
 
-            EmitCheckMemoryAbort(ctx, inst, end.get());
+            EmitCheckMemoryAbort(ctx, inst, end);
             code.jmp(*end, code.T_NEAR);
         });
     } else {
@@ -207,7 +207,7 @@ void AxxEmitX64::EmitMemoryWrite(AxxEmitContext& ctx, IR::Inst* inst) {
         ctx.deferred_emits.emplace_back([=, this, &ctx] {
             code.L(*abort);
             code.call(wrapped_fn);
-            EmitCheckMemoryAbort(ctx, inst, end.get());
+            EmitCheckMemoryAbort(ctx, inst, end);
             code.jmp(*end, code.T_NEAR);
         });
     }
@@ -352,7 +352,7 @@ void AxxEmitX64::EmitExclusiveReadMemoryInline(AxxEmitContext& ctx, IR::Inst* in
 
     const auto fastmem_marker = ShouldFastmem(ctx, inst);
     if (fastmem_marker) {
-        SharedLabel abort = GenSharedLabel(), end = GenSharedLabel();
+        SharedLabel abort = ctx.GenSharedLabel(), end = ctx.GenSharedLabel();
         bool require_abort_handling = false;
 
         const auto src_ptr = EmitFastmemVAddr(code, ctx, *abort, vaddr, require_abort_handling);
@@ -427,7 +427,7 @@ void AxxEmitX64::EmitExclusiveWriteMemoryInline(AxxEmitContext& ctx, IR::Inst* i
 
     EmitExclusiveLock(code, conf, tmp, tmp2.cvt32());
 
-    SharedLabel end = GenSharedLabel();
+    SharedLabel end = ctx.GenSharedLabel();
 
     code.mov(status, u32(1));
     code.movzx(tmp.cvt32(), code.byte[code.ABI_JIT_PTR + offsetof(AxxJitState, exclusive_state)]);
@@ -460,7 +460,7 @@ void AxxEmitX64::EmitExclusiveWriteMemoryInline(AxxEmitContext& ctx, IR::Inst* i
 
     const auto fastmem_marker = ShouldFastmem(ctx, inst);
     if (fastmem_marker) {
-        SharedLabel abort = GenSharedLabel();
+        SharedLabel abort = ctx.GenSharedLabel();
         bool require_abort_handling = false;
 
         const auto dest_ptr = EmitFastmemVAddr(code, ctx, *abort, vaddr, require_abort_handling, tmp);
diff --git a/src/dynarmic/src/dynarmic/backend/x64/emit_x64_memory.h b/src/dynarmic/src/dynarmic/backend/x64/emit_x64_memory.h
index b354efcb51..3ac078f1d7 100644
--- a/src/dynarmic/src/dynarmic/backend/x64/emit_x64_memory.h
+++ b/src/dynarmic/src/dynarmic/backend/x64/emit_x64_memory.h
@@ -54,7 +54,7 @@ void EmitDetectMisalignedVAddr(BlockOfCode& code, EmitContext& ctx, size_t bitsi
     if (ctx.conf.only_detect_misalignment_via_page_table_on_page_boundary) {
         const u32 page_align_mask = static_cast<u32>(page_table_const_size - 1) & ~align_mask;
 
-        SharedLabel detect_boundary = GenSharedLabel(), resume = GenSharedLabel();
+        SharedLabel detect_boundary = ctx.GenSharedLabel(), resume = ctx.GenSharedLabel();
 
         code.jnz(*detect_boundary, code.T_NEAR);
         code.L(*resume);
diff --git a/src/dynarmic/src/dynarmic/backend/x64/emit_x64_vector_floating_point.cpp b/src/dynarmic/src/dynarmic/backend/x64/emit_x64_vector_floating_point.cpp
index 70edfbd0bc..046ecc78d6 100644
--- a/src/dynarmic/src/dynarmic/backend/x64/emit_x64_vector_floating_point.cpp
+++ b/src/dynarmic/src/dynarmic/backend/x64/emit_x64_vector_floating_point.cpp
@@ -24,6 +24,7 @@
 #include "dynarmic/common/fp/fpcr.h"
 #include "dynarmic/common/fp/info.h"
 #include "dynarmic/common/fp/op.h"
+#include "dynarmic/common/fp/rounding_mode.h"
 #include "dynarmic/common/fp/util.h"
 #include "dynarmic/interface/optimization_flags.h"
 #include "dynarmic/ir/basic_block.h"
@@ -93,7 +94,7 @@ void HandleNaNs(BlockOfCode& code, EmitContext& ctx, bool fpcr_controlled, std::
         code.cmp(bitmask, 0);
     }
 
-    SharedLabel end = GenSharedLabel(), nan = GenSharedLabel();
+    SharedLabel end = ctx.GenSharedLabel(), nan = ctx.GenSharedLabel();
 
     code.jnz(*nan, code.T_NEAR);
     code.L(*end);
@@ -189,23 +190,6 @@ void ForceToDefaultNaN(BlockOfCode& code, FP::FPCR fpcr, Xbyak::Xmm result) {
 }
 
 template<size_t fsize>
-void ZeroIfNaN(BlockOfCode& code, Xbyak::Xmm result) {
-    const Xbyak::Xmm nan_mask = xmm0;
-    if (code.HasHostFeature(HostFeature::AVX512_OrthoFloat)) {
-        constexpr u32 nan_to_zero = FixupLUT(FpFixup::PosZero,
-                                             FpFixup::PosZero);
-        FCODE(vfixupimmp)(result, result, code.BConst<32>(ptr_b, nan_to_zero), u8(0));
-    } else if (code.HasHostFeature(HostFeature::AVX)) {
-        FCODE(vcmpordp)(nan_mask, result, result);
-        FCODE(vandp)(result, result, nan_mask);
-    } else {
-        code.movaps(nan_mask, result);
-        FCODE(cmpordp)(nan_mask, nan_mask);
-        code.andps(result, nan_mask);
-    }
-}
-
-template<size_t fsize>
 void DenormalsAreZero(BlockOfCode& code, FP::FPCR fpcr, std::initializer_list<Xbyak::Xmm> to_daz, Xbyak::Xmm tmp) {
     if (fpcr.FZ()) {
         if (code.HasHostFeature(HostFeature::AVX512_OrthoFloat)) {
@@ -1330,7 +1314,7 @@ void EmitFPVectorMulAdd(BlockOfCode& code, EmitContext& ctx, IR::Inst* inst) {
             const Xbyak::Xmm result = ctx.reg_alloc.ScratchXmm(code);
             const Xbyak::Xmm tmp = ctx.reg_alloc.ScratchXmm(code);
 
-            SharedLabel end = GenSharedLabel(), fallback = GenSharedLabel();
+            SharedLabel end = ctx.GenSharedLabel(), fallback = ctx.GenSharedLabel();
 
             MaybeStandardFPSCRValue(code, ctx, fpcr_controlled, [&] {
                 code.movaps(result, xmm_a);
@@ -1603,7 +1587,7 @@ static void EmitRecipStepFused(BlockOfCode& code, EmitContext& ctx, IR::Inst* in
             const Xbyak::Xmm operand2 = ctx.reg_alloc.UseXmm(code, args[1]);
             const Xbyak::Xmm tmp = ctx.reg_alloc.ScratchXmm(code);
 
-            SharedLabel end = GenSharedLabel(), fallback = GenSharedLabel();
+            SharedLabel end = ctx.GenSharedLabel(), fallback = ctx.GenSharedLabel();
 
             MaybeStandardFPSCRValue(code, ctx, fpcr_controlled, [&] {
                 code.movaps(result, GetVectorOf<fsize, false, 0, 2>(code));
@@ -1776,7 +1760,7 @@ static void EmitRSqrtEstimate(BlockOfCode& code, EmitContext& ctx, IR::Inst* ins
             const Xbyak::Xmm result = ctx.reg_alloc.ScratchXmm(code);
             const Xbyak::Xmm value = ctx.reg_alloc.ScratchXmm(code);
 
-            SharedLabel bad_values = GenSharedLabel(), end = GenSharedLabel();
+            SharedLabel bad_values = ctx.GenSharedLabel(), end = ctx.GenSharedLabel();
 
             code.movaps(value, operand);
 
@@ -1867,7 +1851,7 @@ static void EmitRSqrtStepFused(BlockOfCode& code, EmitContext& ctx, IR::Inst* in
             const Xbyak::Xmm tmp = ctx.reg_alloc.ScratchXmm(code);
             const Xbyak::Xmm mask = ctx.reg_alloc.ScratchXmm(code);
 
-            SharedLabel end = GenSharedLabel(), fallback = GenSharedLabel();
+            SharedLabel end = ctx.GenSharedLabel(), fallback = ctx.GenSharedLabel();
 
             MaybeStandardFPSCRValue(code, ctx, fpcr_controlled, [&] {
                 code.vmovaps(result, GetVectorOf<fsize, false, 0, 3>(code));
@@ -2004,120 +1988,123 @@ void EmitX64::EmitFPVectorToHalf32(EmitContext& ctx, IR::Inst* inst) {
 template<size_t fsize, bool unsigned_>
 void EmitFPVectorToFixed(BlockOfCode& code, EmitContext& ctx, IR::Inst* inst) {
     const size_t fbits = inst->GetArg(1).GetU8();
-    const auto rounding = static_cast<FP::RoundingMode>(inst->GetArg(2).GetU8());
+    const auto rounding = FP::RoundingMode(inst->GetArg(2).GetU8());
     [[maybe_unused]] const bool fpcr_controlled = inst->GetArg(3).GetU1();
 
-    if constexpr (fsize != 16) {
-        if (code.HasHostFeature(HostFeature::SSE41) && rounding != FP::RoundingMode::ToNearest_TieAwayFromZero) {
-            auto args = ctx.reg_alloc.GetArgumentInfo(inst);
-
-            const Xbyak::Xmm src = ctx.reg_alloc.UseScratchXmm(code, args[0]);
+    if (code.HasHostFeature(HostFeature::SSE41) && fsize != 16 && rounding != FP::RoundingMode::ToNearest_TieAwayFromZero) {
+        auto args = ctx.reg_alloc.GetArgumentInfo(inst);
+        const Xbyak::Xmm src = ctx.reg_alloc.UseScratchXmm(code, args[0]);
+        MaybeStandardFPSCRValue(code, ctx, fpcr_controlled, [&] {
+            const int round_imm = [&] {
+                switch (rounding) {
+                case FP::RoundingMode::ToNearest_TieEven:
+                default:
+                    return 0b00;
+                case FP::RoundingMode::TowardsPlusInfinity:
+                    return 0b10;
+                case FP::RoundingMode::TowardsMinusInfinity:
+                    return 0b01;
+                case FP::RoundingMode::TowardsZero:
+                    return 0b11;
+                }
+            }();
+            const auto perform_conversion = [&code, &ctx](const Xbyak::Xmm& src) {
+                // MSVC doesn't allow us to use a [&] capture, so we have to do this instead.
+                (void)ctx;
 
-            MaybeStandardFPSCRValue(code, ctx, fpcr_controlled, [&] {
-                const int round_imm = [&] {
-                    switch (rounding) {
-                    case FP::RoundingMode::ToNearest_TieEven:
-                    default:
-                        return 0b00;
-                    case FP::RoundingMode::TowardsPlusInfinity:
-                        return 0b10;
-                    case FP::RoundingMode::TowardsMinusInfinity:
-                        return 0b01;
-                    case FP::RoundingMode::TowardsZero:
-                        return 0b11;
-                    }
-                }();
+                if constexpr (fsize == 32) {
+                    code.cvttps2dq(src, src);
+                } else {
+                    if (code.HasHostFeature(HostFeature::AVX512_OrthoFloat)) {
+                        code.vcvttpd2qq(src, src);
+                    } else {
+                        const Xbyak::Reg64 hi = ctx.reg_alloc.ScratchGpr(code);
+                        const Xbyak::Reg64 lo = ctx.reg_alloc.ScratchGpr(code);
 
-                const auto perform_conversion = [&code, &ctx](const Xbyak::Xmm& src) {
-                    // MSVC doesn't allow us to use a [&] capture, so we have to do this instead.
-                    (void)ctx;
+                        code.cvttsd2si(lo, src);
+                        code.punpckhqdq(src, src);
+                        code.cvttsd2si(hi, src);
+                        code.movq(src, lo);
+                        code.pinsrq(src, hi, 1);
 
-                    if constexpr (fsize == 32) {
-                        code.cvttps2dq(src, src);
-                    } else {
-                        if (code.HasHostFeature(HostFeature::AVX512_OrthoFloat)) {
-                            code.vcvttpd2qq(src, src);
-                        } else {
-                            const Xbyak::Reg64 hi = ctx.reg_alloc.ScratchGpr(code);
-                            const Xbyak::Reg64 lo = ctx.reg_alloc.ScratchGpr(code);
-
-                            code.cvttsd2si(lo, src);
-                            code.punpckhqdq(src, src);
-                            code.cvttsd2si(hi, src);
-                            code.movq(src, lo);
-                            code.pinsrq(src, hi, 1);
-
-                            ctx.reg_alloc.Release(hi);
-                            ctx.reg_alloc.Release(lo);
-                        }
+                        ctx.reg_alloc.Release(hi);
+                        ctx.reg_alloc.Release(lo);
                     }
-                };
-
-                if (fbits != 0) {
-                    const u64 scale_factor = fsize == 32
-                                               ? static_cast<u64>(fbits + 127) << 23
-                                               : static_cast<u64>(fbits + 1023) << 52;
-                    FCODE(mulp)(src, GetVectorOf<fsize>(code, scale_factor));
                 }
+            };
+            if (fbits != 0) {
+                const u64 scale_factor = fsize == 32
+                    ? u64(fbits + 127) << 23
+                    : u64(fbits + 1023) << 52;
+                FCODE(mulp)(src, GetVectorOf<fsize>(code, scale_factor));
+            }
 
-                FCODE(roundp)(src, src, static_cast<u8>(round_imm));
-                ZeroIfNaN<fsize>(code, src);
+            FCODE(roundp)(src, src, u8(round_imm));
+            const Xbyak::Xmm nan_mask = xmm0;
+            if (code.HasHostFeature(HostFeature::AVX512_OrthoFloat)) {
+                static constexpr u32 nan_to_zero = FixupLUT(FpFixup::PosZero, FpFixup::PosZero);
+                FCODE(vfixupimmp)(src, src, code.BConst<32>(ptr_b, nan_to_zero), u8(0));
+            } else if (code.HasHostFeature(HostFeature::AVX)) {
+                FCODE(vcmpordp)(nan_mask, src, src);
+                FCODE(vandp)(src, src, nan_mask);
+            } else {
+                code.movaps(nan_mask, src);
+                FCODE(cmpordp)(nan_mask, nan_mask);
+                code.andps(src, nan_mask);
+            }
 
-                constexpr u64 float_upper_limit_signed = fsize == 32 ? 0x4f000000 : 0x43e0000000000000;
-                [[maybe_unused]] constexpr u64 float_upper_limit_unsigned = fsize == 32 ? 0x4f800000 : 0x43f0000000000000;
+            constexpr u64 float_upper_limit_signed = fsize == 32 ? 0x4f000000 : 0x43e0000000000000;
+            [[maybe_unused]] constexpr u64 float_upper_limit_unsigned = fsize == 32 ? 0x4f800000 : 0x43f0000000000000;
 
-                if constexpr (unsigned_) {
-                    if (code.HasHostFeature(HostFeature::AVX512_OrthoFloat)) {
-                        // Mask positive values
-                        code.xorps(xmm0, xmm0);
-                        FCODE(vcmpp)(k1, src, xmm0, Cmp::GreaterEqual_OQ);
-
-                        // Convert positive values to unsigned integers, write 0 anywhere else
-                        // vcvttp*2u*q already saturates out-of-range values to (0xFFFF...)
-                        if constexpr (fsize == 32) {
-                            code.vcvttps2udq(src | k1 | T_z, src);
-                        } else {
-                            code.vcvttpd2uqq(src | k1 | T_z, src);
-                        }
+            if constexpr (unsigned_) {
+                if (code.HasHostFeature(HostFeature::AVX512_OrthoFloat)) {
+                    // Mask positive values
+                    code.xorps(xmm0, xmm0);
+                    FCODE(vcmpp)(k1, src, xmm0, Cmp::GreaterEqual_OQ);
+
+                    // Convert positive values to unsigned integers, write 0 anywhere else
+                    // vcvttp*2u*q already saturates out-of-range values to (0xFFFF...)
+                    if (fsize == 32) {
+                        code.vcvttps2udq(src | k1 | T_z, src);
                     } else {
-                        // Zero is minimum
-                        code.xorps(xmm0, xmm0);
-                        FCODE(cmplep)(xmm0, src);
-                        FCODE(andp)(src, xmm0);
-
-                        // Will we exceed unsigned range?
-                        const Xbyak::Xmm exceed_unsigned = ctx.reg_alloc.ScratchXmm(code);
-                        code.movaps(exceed_unsigned, GetVectorOf<fsize, float_upper_limit_unsigned>(code));
-                        FCODE(cmplep)(exceed_unsigned, src);
-
-                        // Will be exceed signed range?
-                        const Xbyak::Xmm tmp = ctx.reg_alloc.ScratchXmm(code);
-                        code.movaps(tmp, GetVectorOf<fsize, float_upper_limit_signed>(code));
-                        code.movaps(xmm0, tmp);
-                        FCODE(cmplep)(xmm0, src);
-                        FCODE(andp)(tmp, xmm0);
-                        FCODE(subp)(src, tmp);
-                        perform_conversion(src);
-                        ICODE(psll)(xmm0, u8(fsize - 1));
-                        FCODE(orp)(src, xmm0);
-
-                        // Saturate to max
-                        FCODE(orp)(src, exceed_unsigned);
+                        code.vcvttpd2uqq(src | k1 | T_z, src);
                     }
                 } else {
-                    using FPT = mcl::unsigned_integer_of_size<fsize>;  // WORKAROUND: For issue 678 on MSVC
-                    constexpr u64 integer_max = FPT((std::numeric_limits<std::conditional_t<unsigned_, FPT, std::make_signed_t<FPT>>>::max)());
+                    // Zero is minimum
+                    code.xorps(xmm0, xmm0);
+                    FCODE(cmplep)(xmm0, src);
+                    FCODE(andp)(src, xmm0);
 
-                    code.movaps(xmm0, GetVectorOf<fsize, float_upper_limit_signed>(code));
+                    // Will we exceed unsigned range?
+                    const Xbyak::Xmm exceed_unsigned = ctx.reg_alloc.ScratchXmm(code);
+                    code.movaps(exceed_unsigned, GetVectorOf<fsize, float_upper_limit_unsigned>(code));
+                    FCODE(cmplep)(exceed_unsigned, src);
+
+                    // Will be exceed signed range?
+                    const Xbyak::Xmm tmp = ctx.reg_alloc.ScratchXmm(code);
+                    code.movaps(tmp, GetVectorOf<fsize, float_upper_limit_signed>(code));
+                    code.movaps(xmm0, tmp);
                     FCODE(cmplep)(xmm0, src);
+                    FCODE(andp)(tmp, xmm0);
+                    FCODE(subp)(src, tmp);
                     perform_conversion(src);
-                    FCODE(blendvp)(src, GetVectorOf<fsize, integer_max>(code));
-                }
-            });
+                    ICODE(psll)(xmm0, u8(fsize - 1));
+                    FCODE(orp)(src, xmm0);
 
-            ctx.reg_alloc.DefineValue(code, inst, src);
-            return;
-        }
+                    // Saturate to max
+                    FCODE(orp)(src, exceed_unsigned);
+                }
+            } else {
+                using FPT = mcl::unsigned_integer_of_size<fsize>;  // WORKAROUND: For issue 678 on MSVC
+                constexpr u64 integer_max = FPT((std::numeric_limits<std::conditional_t<unsigned_, FPT, std::make_signed_t<FPT>>>::max)());
+                code.movaps(xmm0, GetVectorOf<fsize, float_upper_limit_signed>(code));
+                FCODE(cmplep)(xmm0, src);
+                perform_conversion(src);
+                FCODE(blendvp)(src, GetVectorOf<fsize, integer_max>(code));
+            }
+        });
+        ctx.reg_alloc.DefineValue(code, inst, src);
+        return;
     }
 
     using FPT = mcl::unsigned_integer_of_size<fsize>; // WORKAROUND: For issue 678 on MSVC