From f16d1837f8f6cf5917acba1605e7598c20e8a65e Mon Sep 17 00:00:00 2001
From: SChernykh <sergey.v.chernykh@gmail.com>
Date: Sun, 29 Nov 2020 14:05:50 +0100
Subject: [PATCH] Optimized JIT compiler

More branch-free code
---
 src/crypto/randomx/jit_compiler_x86.cpp | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/src/crypto/randomx/jit_compiler_x86.cpp b/src/crypto/randomx/jit_compiler_x86.cpp
index 182de1fa..9753701e 100644
--- a/src/crypto/randomx/jit_compiler_x86.cpp
+++ b/src/crypto/randomx/jit_compiler_x86.cpp
@@ -495,12 +495,10 @@ namespace randomx {
 
 		emit32(instr.getImm32(), code, codePos);
 		emitByte(0x25, code, codePos);
-		if (instr.getModCond() < StoreL3Condition) {
-			emit32(AddressMask[instr.getModMem()], code, codePos);
-		}
-		else {
-			emit32(ScratchpadL3Mask, code, codePos);
-		}
+
+		const uint32_t mask1 = AddressMask[instr.getModMem()];
+		const uint32_t mask2 = ScratchpadL3Mask;
+		emit32((instr.mod < (StoreL3Condition << 4)) ? mask1 : mask2, code, codePos);
 	}
 
 	FORCE_INLINE void JitCompilerX86::genAddressImm(const Instruction& instr, uint8_t* code, uint32_t& codePos) {