diff --git a/Source/Core/Core/PowerPC/Jit64/Jit_Integer.cpp b/Source/Core/Core/PowerPC/Jit64/Jit_Integer.cpp index 7cc7723b76..13e654eab5 100644 --- a/Source/Core/Core/PowerPC/Jit64/Jit_Integer.cpp +++ b/Source/Core/Core/PowerPC/Jit64/Jit_Integer.cpp @@ -1494,22 +1494,28 @@ void Jit64::divwx(UGeckoInstruction inst) else if (divisor == 2 || divisor == -2) { X64Reg tmp = RSCRATCH; + X64Reg sign = tmp; + if (!Ra.IsSimpleReg()) { + // Load dividend from memory MOV(32, R(tmp), Ra); MOV(32, Rd, R(tmp)); } else if (d == a) { + // Make a copy of the dividend MOV(32, R(tmp), Ra); } else { + // Copy dividend directly into destination MOV(32, Rd, Ra); tmp = Ra.GetSimpleReg(); + sign = Rd; } - SHR(32, Rd, Imm8(31)); + SHR(32, R(sign), Imm8(31)); ADD(32, Rd, R(tmp)); SAR(32, Rd, Imm8(1)); @@ -1538,11 +1544,11 @@ void Jit64::divwx(UGeckoInstruction inst) else if (d == a) { // Rd holds the dividend, while RSCRATCH holds the sum - // This is opposite of the other cases + // This is the reverse of the other cases dividend = Rd; sum = RSCRATCH; src = RSCRATCH; - // Negate condition to compensate the swapped values + // Negate condition to compensate for the swapped values cond = CC_S; } else