From decda4a2c7e5dc6cce16f359f30bcf320c9dcf00 Mon Sep 17 00:00:00 2001
From: ReinUsesLisp <reinuseslisp@airmail.cc>
Date: Mon, 10 May 2021 04:05:31 -0300
Subject: glasm: Add MUFU instructions to GLASM

---
 .../backend/glasm/emit_glasm_floating_point.cpp    | 29 +++++++++++-----------
 .../backend/glasm/emit_glasm_instructions.h        | 14 +++++------
 2 files changed, 22 insertions(+), 21 deletions(-)

(limited to 'src/shader_recompiler')

diff --git a/src/shader_recompiler/backend/glasm/emit_glasm_floating_point.cpp b/src/shader_recompiler/backend/glasm/emit_glasm_floating_point.cpp
index 84028e01a..15db6618f 100644
--- a/src/shader_recompiler/backend/glasm/emit_glasm_floating_point.cpp
+++ b/src/shader_recompiler/backend/glasm/emit_glasm_floating_point.cpp
@@ -125,40 +125,41 @@ void EmitFPNeg64(EmitContext& ctx, IR::Inst& inst, Register value) {
     ctx.LongAdd("MOV.F64 {}.x,-{};", inst, value);
 }
 
-void EmitFPSin([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] ScalarF32 value) {
-    throw NotImplementedException("GLASM instruction");
+void EmitFPSin(EmitContext& ctx, IR::Inst& inst, ScalarF32 value) {
+    ctx.Add("SIN {}.x,{};", inst, value);
 }
 
-void EmitFPCos([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] ScalarF32 value) {
-    throw NotImplementedException("GLASM instruction");
+void EmitFPCos(EmitContext& ctx, IR::Inst& inst, ScalarF32 value) {
+    ctx.Add("COS {}.x,{};", inst, value);
 }
 
-void EmitFPExp2([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] ScalarF32 value) {
-    throw NotImplementedException("GLASM instruction");
+void EmitFPExp2(EmitContext& ctx, IR::Inst& inst, ScalarF32 value) {
+    ctx.Add("EX2 {}.x,{};", inst, value);
 }
 
-void EmitFPLog2([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] ScalarF32 value) {
-    throw NotImplementedException("GLASM instruction");
+void EmitFPLog2(EmitContext& ctx, IR::Inst& inst, ScalarF32 value) {
+    ctx.Add("LG2 {}.x,{};", inst, value);
 }
 
-void EmitFPRecip32([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] ScalarF32 value) {
-    throw NotImplementedException("GLASM instruction");
+void EmitFPRecip32(EmitContext& ctx, IR::Inst& inst, ScalarF32 value) {
+    ctx.Add("RCP {}.x,{};", inst, value);
 }
 
 void EmitFPRecip64([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] Register value) {
     throw NotImplementedException("GLASM instruction");
 }
 
-void EmitFPRecipSqrt32([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] ScalarF32 value) {
-    throw NotImplementedException("GLASM instruction");
+void EmitFPRecipSqrt32(EmitContext& ctx, IR::Inst& inst, ScalarF32 value) {
+    ctx.Add("RSQ {}.x,{};", inst, value);
 }
 
 void EmitFPRecipSqrt64([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] Register value) {
     throw NotImplementedException("GLASM instruction");
 }
 
-void EmitFPSqrt([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] ScalarF32 value) {
-    throw NotImplementedException("GLASM instruction");
+void EmitFPSqrt(EmitContext& ctx, IR::Inst& inst, ScalarF32 value) {
+    const Register ret{ctx.reg_alloc.Define(inst)};
+    ctx.Add("RSQ {}.x,{};RCP {}.x,{}.x;", ret, value, ret, ret);
 }
 
 void EmitFPSaturate16([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] Register value) {
diff --git a/src/shader_recompiler/backend/glasm/emit_glasm_instructions.h b/src/shader_recompiler/backend/glasm/emit_glasm_instructions.h
index d65a474f2..1bbd02022 100644
--- a/src/shader_recompiler/backend/glasm/emit_glasm_instructions.h
+++ b/src/shader_recompiler/backend/glasm/emit_glasm_instructions.h
@@ -232,15 +232,15 @@ void EmitFPMul64(EmitContext& ctx, IR::Inst& inst, ScalarF64 a, ScalarF64 b);
 void EmitFPNeg16(EmitContext& ctx, Register value);
 void EmitFPNeg32(EmitContext& ctx, IR::Inst& inst, ScalarRegister value);
 void EmitFPNeg64(EmitContext& ctx, IR::Inst& inst, Register value);
-void EmitFPSin(EmitContext& ctx, ScalarF32 value);
-void EmitFPCos(EmitContext& ctx, ScalarF32 value);
-void EmitFPExp2(EmitContext& ctx, ScalarF32 value);
-void EmitFPLog2(EmitContext& ctx, ScalarF32 value);
-void EmitFPRecip32(EmitContext& ctx, ScalarF32 value);
+void EmitFPSin(EmitContext& ctx, IR::Inst& inst, ScalarF32 value);
+void EmitFPCos(EmitContext& ctx, IR::Inst& inst, ScalarF32 value);
+void EmitFPExp2(EmitContext& ctx, IR::Inst& inst, ScalarF32 value);
+void EmitFPLog2(EmitContext& ctx, IR::Inst& inst, ScalarF32 value);
+void EmitFPRecip32(EmitContext& ctx, IR::Inst& inst, ScalarF32 value);
 void EmitFPRecip64(EmitContext& ctx, Register value);
-void EmitFPRecipSqrt32(EmitContext& ctx, ScalarF32 value);
+void EmitFPRecipSqrt32(EmitContext& ctx, IR::Inst& inst, ScalarF32 value);
 void EmitFPRecipSqrt64(EmitContext& ctx, Register value);
-void EmitFPSqrt(EmitContext& ctx, ScalarF32 value);
+void EmitFPSqrt(EmitContext& ctx, IR::Inst& inst, ScalarF32 value);
 void EmitFPSaturate16(EmitContext& ctx, Register value);
 void EmitFPSaturate32(EmitContext& ctx, IR::Inst& inst, ScalarF32 value);
 void EmitFPSaturate64(EmitContext& ctx, Register value);
-- 
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