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shader_jit_x64: Use Reg32 for LOOP* registers, eliminating casts
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@ -109,11 +109,11 @@ static const Reg64 SETUP = r9;
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static const Reg64 ADDROFFS_REG_0 = r10;
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static const Reg64 ADDROFFS_REG_1 = r11;
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/// VS loop count register (Multiplied by 16)
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static const Reg64 LOOPCOUNT_REG = r12;
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static const Reg32 LOOPCOUNT_REG = r12d;
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/// Current VS loop iteration number (we could probably use LOOPCOUNT_REG, but this quicker)
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static const Reg64 LOOPCOUNT = rsi;
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static const Reg32 LOOPCOUNT = esi;
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/// Number to increment LOOPCOUNT_REG by on each loop iteration (Multiplied by 16)
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static const Reg64 LOOPINC = rdi;
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static const Reg32 LOOPINC = edi;
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/// Result of the previous CMP instruction for the X-component comparison
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static const Reg64 COND0 = r13;
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/// Result of the previous CMP instruction for the Y-component comparison
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@ -734,24 +734,24 @@ void JitShader::Compile_LOOP(Instruction instr) {
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// 4 bits) to be used as an offset into the 16-byte vector registers later
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size_t offset =
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ShaderSetup::UniformOffset(RegisterType::IntUniform, instr.flow_control.int_uniform_id);
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mov(LOOPCOUNT.cvt32(), dword[SETUP + offset]);
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mov(LOOPCOUNT_REG.cvt32(), LOOPCOUNT.cvt32());
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shr(LOOPCOUNT_REG.cvt32(), 4);
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and(LOOPCOUNT_REG.cvt32(), 0xFF0); // Y-component is the start
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mov(LOOPINC.cvt32(), LOOPCOUNT.cvt32());
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shr(LOOPINC.cvt32(), 12);
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and(LOOPINC.cvt32(), 0xFF0); // Z-component is the incrementer
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movzx(LOOPCOUNT.cvt32(), LOOPCOUNT.cvt8()); // X-component is iteration count
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add(LOOPCOUNT.cvt32(), 1); // Iteration count is X-component + 1
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mov(LOOPCOUNT, dword[SETUP + offset]);
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mov(LOOPCOUNT_REG, LOOPCOUNT);
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shr(LOOPCOUNT_REG, 4);
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and(LOOPCOUNT_REG, 0xFF0); // Y-component is the start
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mov(LOOPINC, LOOPCOUNT);
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shr(LOOPINC, 12);
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and(LOOPINC, 0xFF0); // Z-component is the incrementer
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movzx(LOOPCOUNT, LOOPCOUNT.cvt8()); // X-component is iteration count
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add(LOOPCOUNT, 1); // Iteration count is X-component + 1
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Label l_loop_start;
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L(l_loop_start);
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Compile_Block(instr.flow_control.dest_offset + 1);
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add(LOOPCOUNT_REG.cvt32(), LOOPINC.cvt32()); // Increment LOOPCOUNT_REG by Z-component
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sub(LOOPCOUNT.cvt32(), 1); // Increment loop count by 1
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jnz(l_loop_start); // Loop if not equal
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add(LOOPCOUNT_REG, LOOPINC); // Increment LOOPCOUNT_REG by Z-component
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sub(LOOPCOUNT, 1); // Increment loop count by 1
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jnz(l_loop_start); // Loop if not equal
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looping = false;
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}
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@ -856,7 +856,7 @@ void JitShader::Compile() {
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// Zero address/loop registers
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xor(ADDROFFS_REG_0.cvt32(), ADDROFFS_REG_0.cvt32());
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xor(ADDROFFS_REG_1.cvt32(), ADDROFFS_REG_1.cvt32());
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xor(LOOPCOUNT_REG.cvt32(), LOOPCOUNT_REG.cvt32());
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xor(LOOPCOUNT_REG, LOOPCOUNT_REG);
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// Used to set a register to one
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static const __m128 one = {1.f, 1.f, 1.f, 1.f};
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