From 8bddd8c675625809d7ab39b56dd6f1a7071e2477 Mon Sep 17 00:00:00 2001
From: Shawn Hoffman <godisgovernment@gmail.com>
Date: Sat, 17 Jul 2021 19:19:33 -0700
Subject: [PATCH] remove SetRoundMode we only care about SSE rounding mode, and
 set that manually in SetSIMDMode

---
 Source/Core/Common/ArmFPURoundMode.cpp     | 5 -----
 Source/Core/Common/FPURoundMode.h          | 2 --
 Source/Core/Common/GenericFPURoundMode.cpp | 3 ---
 Source/Core/Common/x64FPURoundMode.cpp     | 7 -------
 Source/Core/Core/PowerPC/PowerPC.cpp       | 1 -
 5 files changed, 18 deletions(-)

diff --git a/Source/Core/Common/ArmFPURoundMode.cpp b/Source/Core/Common/ArmFPURoundMode.cpp
index c20e9f2e19..1f666d6f0d 100644
--- a/Source/Core/Common/ArmFPURoundMode.cpp
+++ b/Source/Core/Common/ArmFPURoundMode.cpp
@@ -35,11 +35,6 @@ namespace FPURoundMode
 static const u64 default_fpcr = GetFPCR();
 static u64 saved_fpcr = default_fpcr;
 
-void SetRoundMode(RoundMode mode)
-{
-  // We don't need to do anything here since SetSIMDMode is always called after calling this
-}
-
 void SetSIMDMode(RoundMode rounding_mode, bool non_ieee_mode)
 {
   // When AH is disabled, FZ controls flush-to-zero for both inputs and outputs. When AH is enabled,
diff --git a/Source/Core/Common/FPURoundMode.h b/Source/Core/Common/FPURoundMode.h
index 7aa3363aa9..578178d05e 100644
--- a/Source/Core/Common/FPURoundMode.h
+++ b/Source/Core/Common/FPURoundMode.h
@@ -15,8 +15,6 @@ enum RoundMode : u32
   ROUND_DOWN = 3
 };
 
-void SetRoundMode(RoundMode mode);
-
 void SetSIMDMode(RoundMode rounding_mode, bool non_ieee_mode);
 
 /*
diff --git a/Source/Core/Common/GenericFPURoundMode.cpp b/Source/Core/Common/GenericFPURoundMode.cpp
index 20d46b334a..b5075a94e3 100644
--- a/Source/Core/Common/GenericFPURoundMode.cpp
+++ b/Source/Core/Common/GenericFPURoundMode.cpp
@@ -7,9 +7,6 @@
 // Generic, do nothing
 namespace FPURoundMode
 {
-void SetRoundMode(RoundMode mode)
-{
-}
 void SetSIMDMode(RoundMode rounding_mode, bool non_ieee_mode)
 {
 }
diff --git a/Source/Core/Common/x64FPURoundMode.cpp b/Source/Core/Common/x64FPURoundMode.cpp
index aa5e9cdb1b..f69422302f 100644
--- a/Source/Core/Common/x64FPURoundMode.cpp
+++ b/Source/Core/Common/x64FPURoundMode.cpp
@@ -14,13 +14,6 @@ namespace FPURoundMode
 static u32 saved_sse_state = _mm_getcsr();
 static const u32 default_sse_state = _mm_getcsr();
 
-void SetRoundMode(RoundMode mode)
-{
-  // Convert PowerPC to native rounding mode.
-  static const int rounding_mode_lut[] = {FE_TONEAREST, FE_TOWARDZERO, FE_UPWARD, FE_DOWNWARD};
-  fesetround(rounding_mode_lut[mode]);
-}
-
 void SetSIMDMode(RoundMode rounding_mode, bool non_ieee_mode)
 {
   // OR-mask for disabling FPU exceptions (bits 7-12 in the MXCSR register)
diff --git a/Source/Core/Core/PowerPC/PowerPC.cpp b/Source/Core/Core/PowerPC/PowerPC.cpp
index 42bacb9dff..8c62dceec2 100644
--- a/Source/Core/Core/PowerPC/PowerPC.cpp
+++ b/Source/Core/Core/PowerPC/PowerPC.cpp
@@ -640,7 +640,6 @@ void RoundingModeUpdated()
   // The rounding mode is separate for each thread, so this must run on the CPU thread
   ASSERT(Core::IsCPUThread());
 
-  FPURoundMode::SetRoundMode(FPSCR.RN);
   FPURoundMode::SetSIMDMode(FPSCR.RN, FPSCR.NI);
 }