From 2e5f39ee0fb4b5d6303e4342b17146952b9bb79c Mon Sep 17 00:00:00 2001
From: Alexey Volkov <avolkov.intel@gmail.com>
Date: Wed, 23 Apr 2014 08:57:09 +0000
Subject: [PATCH] [X86] Silvermont new scheduler model This model is not final
 and work is still in progress. However there are substantial improvements on
 integer tests mainly because of better RAL with new scheduler.

Differential Revision: http://reviews.llvm.org/D3451


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206957 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/X86/X86ScheduleSLM.td | 846 ++++++++-----------------------
 1 file changed, 203 insertions(+), 643 deletions(-)

diff --git a/lib/Target/X86/X86ScheduleSLM.td b/lib/Target/X86/X86ScheduleSLM.td
index 6c2a3040240..f29c987c96e 100644
--- a/lib/Target/X86/X86ScheduleSLM.td
+++ b/lib/Target/X86/X86ScheduleSLM.td
@@ -1,4 +1,4 @@
-//===- X86ScheduleSLM.td - X86 Atom Scheduling Definitions -*- tablegen -*-==//
+//=- X86ScheduleSLM.td - X86 Silvermont Scheduling -----------*- tablegen -*-=//
 //
 //                     The LLVM Compiler Infrastructure
 //
@@ -7,662 +7,222 @@
 //
 //===----------------------------------------------------------------------===//
 //
-// This file defines the itinerary class data for the Intel Atom
-// (Silvermont) processor.
+// This file defines the machine model for Intal Silvermont to support
+// instruction scheduling and other instruction cost heuristics.
 //
 //===----------------------------------------------------------------------===//
 
-def IEC_RSV0 : FuncUnit;
-def IEC_RSV1 : FuncUnit;
-def FPC_RSV0 : FuncUnit;
-def FPC_RSV1 : FuncUnit;
-def MEC_RSV : FuncUnit;
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-def SLMItineraries : ProcessorItineraries<
-  [ IEC_RSV0, IEC_RSV1, FPC_RSV0, FPC_RSV1, MEC_RSV ],
-  [], [
-  // [InstrStage<N, [FPC_RSV0, FPC_RSV1]>] 
-  // [InstrStage<N, [FPC_RSV0, FPC_RSV1], 0>, InstrStage<N, [MEC_RSV]>]
-  // [InstrStage<N, [IEC_RSV0, IEC_RSV1]>] 
-  // [InstrStage<N, [IEC_RSV0, IEC_RSV1], 0>,InstrStage<N,[MEC_RSV]>]
-  //
-  // Default is 1 cycle, IEC_RSV0 or IEC_RSV1
-  //InstrItinData<IIC_DEFAULT, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_ALU_MEM, [InstrStage<1, [IEC_RSV0, IEC_RSV1], 0>,
-                  InstrStage<1, [MEC_RSV]>] >,
-  InstrItinData<IIC_ALU_NONMEM, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_LEA, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_LEA_16, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  // mul
-  InstrItinData<IIC_MUL8, [InstrStage<4, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_MUL16_MEM, [InstrStage<4, [IEC_RSV0, IEC_RSV1], 0>,
-                  InstrStage<4, [MEC_RSV]>] >,
-  InstrItinData<IIC_MUL16_REG, [InstrStage<4, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_MUL32_MEM, [InstrStage<3, [IEC_RSV0, IEC_RSV1], 0>,
-                  InstrStage<3, [MEC_RSV]>] >,
-  InstrItinData<IIC_MUL32_REG, [InstrStage<3, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_MUL64, [InstrStage<4, [IEC_RSV0, IEC_RSV1]>] >,
-  // imul by al, ax, eax, rax
-  InstrItinData<IIC_IMUL8, [InstrStage<6, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_IMUL16_MEM, [InstrStage<6, [IEC_RSV0, IEC_RSV1], 0>,
-                  InstrStage<6, [MEC_RSV]>] >,
-  InstrItinData<IIC_IMUL16_REG, [InstrStage<6, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_IMUL32_MEM, [InstrStage<6, [IEC_RSV0, IEC_RSV1], 0>,
-                  InstrStage<6, [MEC_RSV]>] >,
-  InstrItinData<IIC_IMUL32_REG, [InstrStage<6, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_IMUL64, [InstrStage<6, [IEC_RSV0, IEC_RSV1]>] >,
-  // imul reg by reg|mem
-  InstrItinData<IIC_IMUL16_RM, [InstrStage<4, [IEC_RSV0, IEC_RSV1], 0>,
-                  InstrStage<4, [MEC_RSV]>] >,
-  InstrItinData<IIC_IMUL16_RR, [InstrStage<4, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_IMUL32_RM, [InstrStage<3, [IEC_RSV0, IEC_RSV1], 0>,
-                  InstrStage<3, [MEC_RSV]>] >,
-  InstrItinData<IIC_IMUL32_RR, [InstrStage<3, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_IMUL64_RM, [InstrStage<4, [IEC_RSV0, IEC_RSV1], 0>,
-                  InstrStage<4, [MEC_RSV]>] >,
-  InstrItinData<IIC_IMUL64_RR, [InstrStage<4, [IEC_RSV0, IEC_RSV1]>]  >,
-  // imul reg = reg/mem * imm
-  InstrItinData<IIC_IMUL16_RRI, [InstrStage<4, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_IMUL32_RRI, [InstrStage<3, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_IMUL64_RRI, [InstrStage<4, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_IMUL16_RMI, [InstrStage<4, [IEC_RSV0, IEC_RSV1], 0>,
-                  InstrStage<4, [MEC_RSV]>] >,
-  InstrItinData<IIC_IMUL32_RMI, [InstrStage<3, [IEC_RSV0, IEC_RSV1], 0>,
-                  InstrStage<3, [MEC_RSV]>] >,
-  InstrItinData<IIC_IMUL64_RMI, [InstrStage<4, [IEC_RSV0, IEC_RSV1], 0>,
-                  InstrStage<4, [MEC_RSV]>] >,
-  // idiv - min latency
-  InstrItinData<IIC_IDIV8, [InstrStage<34, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_IDIV16, [InstrStage<35, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_IDIV32, [InstrStage<35, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_IDIV64, [InstrStage<49, [IEC_RSV0, IEC_RSV1]>] >,
-  // div - min latency
-  InstrItinData<IIC_DIV8_REG, [InstrStage<25, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_DIV8_MEM, [InstrStage<25, [IEC_RSV0, IEC_RSV1], 0>,
-                  InstrStage<25, [MEC_RSV]>] >,
-  InstrItinData<IIC_DIV16, [InstrStage<26, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_DIV32, [InstrStage<26, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_DIV64, [InstrStage<38, [IEC_RSV0, IEC_RSV1]>] >,
-  // neg/not/inc/dec
-  InstrItinData<IIC_UNARY_REG, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_UNARY_MEM, [InstrStage<1, [IEC_RSV0, IEC_RSV1], 0>,
-                  InstrStage<1, [MEC_RSV]>] >,
-  // add/sub/and/or/xor/adc/sbc/cmp/test
-  InstrItinData<IIC_BIN_NONMEM, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_BIN_MEM, [InstrStage<1, [IEC_RSV0, IEC_RSV1], 0>,
-                  InstrStage<1, [MEC_RSV]>] >,
-  // adc/sbb
-  InstrItinData<IIC_BIN_CARRY_NONMEM, [InstrStage<2, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_BIN_CARRY_MEM, [InstrStage<2, [IEC_RSV0, IEC_RSV1], 0>,
-                  InstrStage<2, [MEC_RSV]>] >,
-  // shift/rotate
-  InstrItinData<IIC_SR, [InstrStage<1, [IEC_RSV0], 0>,
-                   InstrStage<1, [MEC_RSV]>] >,
-  // shift double
-  InstrItinData<IIC_SHD16_REG_IM, [InstrStage<2, [IEC_RSV0]>] >,
-  InstrItinData<IIC_SHD16_REG_CL, [InstrStage<4, [IEC_RSV0]>] >,
-  InstrItinData<IIC_SHD16_MEM_IM, [InstrStage<2, [IEC_RSV0], 0>,
-                   InstrStage<2, [MEC_RSV]>] >,
-  InstrItinData<IIC_SHD16_MEM_CL, [InstrStage<4, [IEC_RSV0], 0>,
-                   InstrStage<4, [MEC_RSV]>] >,
-  InstrItinData<IIC_SHD32_REG_IM, [InstrStage<2, [IEC_RSV0]>] >,
-  InstrItinData<IIC_SHD32_REG_CL, [InstrStage<4, [IEC_RSV0]>] >,
-  InstrItinData<IIC_SHD32_MEM_IM, [InstrStage<2, [IEC_RSV0], 0>,
-                   InstrStage<2, [MEC_RSV]>] >,
-  InstrItinData<IIC_SHD32_MEM_CL, [InstrStage<4, [IEC_RSV0], 0>,
-                   InstrStage<4, [MEC_RSV]>] >,
-  InstrItinData<IIC_SHD64_REG_IM, [InstrStage<2, [IEC_RSV0]>] >,
-  InstrItinData<IIC_SHD64_REG_CL, [InstrStage<4, [IEC_RSV0]>] >,
-  InstrItinData<IIC_SHD64_MEM_IM, [InstrStage<2, [IEC_RSV0], 0>,
-                   InstrStage<2, [MEC_RSV]>] >,
-  InstrItinData<IIC_SHD64_MEM_CL, [InstrStage<4, [IEC_RSV0], 0>,
-                   InstrStage<4, [MEC_RSV]>] >,
-  // cmov
-  InstrItinData<IIC_CMOV16_RM, [InstrStage<2, [IEC_RSV0, IEC_RSV1], 0>,
-                  InstrStage<2, [MEC_RSV]>] >,
-  InstrItinData<IIC_CMOV16_RR, [InstrStage<2, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_CMOV32_RM, [InstrStage<2, [IEC_RSV0, IEC_RSV1], 0>,
-                  InstrStage<2, [MEC_RSV]>] >,
-  InstrItinData<IIC_CMOV32_RR, [InstrStage<2, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_CMOV64_RM, [InstrStage<2, [IEC_RSV0, IEC_RSV1], 0>,
-                  InstrStage<2, [MEC_RSV]>] >,
-  InstrItinData<IIC_CMOV64_RR, [InstrStage<2, [IEC_RSV0, IEC_RSV1]>] >,
-  // set
-  InstrItinData<IIC_SET_M, [InstrStage<1, [IEC_RSV0, IEC_RSV1], 0>,
-                  InstrStage<1, [MEC_RSV]>] >,
-  InstrItinData<IIC_SET_R, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  // jcc
-  InstrItinData<IIC_Jcc, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  // jcxz/jecxz/jrcxz
-  InstrItinData<IIC_JCXZ, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  // jmp rel
-  InstrItinData<IIC_JMP_REL, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  // jmp indirect
-  InstrItinData<IIC_JMP_REG, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_JMP_MEM, [InstrStage<1, [IEC_RSV0, IEC_RSV1], 0>,
-                  InstrStage<1, [MEC_RSV]>] >,
-  // jmp far
-  InstrItinData<IIC_JMP_FAR_MEM, [InstrStage<1, [IEC_RSV0, IEC_RSV1], 0>,
-                  InstrStage<1, [MEC_RSV]>] >,
-  InstrItinData<IIC_JMP_FAR_PTR, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  // loop/loope/loopne
-  InstrItinData<IIC_LOOP, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_LOOPE, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_LOOPNE, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  // call - all but reg/imm
-  InstrItinData<IIC_CALL_RI, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_CALL_MEM, [InstrStage<1, [IEC_RSV0, IEC_RSV1], 0>,
-                  InstrStage<1, [MEC_RSV]>] >,
-  InstrItinData<IIC_CALL_FAR_MEM, [InstrStage<1, [IEC_RSV0, IEC_RSV1], 0>,
-                  InstrStage<1, [MEC_RSV]>] >,
-  InstrItinData<IIC_CALL_FAR_PTR, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  //ret
-  InstrItinData<IIC_RET, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_RET_IMM, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  //sign extension movs
-  InstrItinData<IIC_MOVSX, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_MOVSX_R16_R8, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_MOVSX_R16_M8, [InstrStage<1, [IEC_RSV0, IEC_RSV1], 0>,
-                  InstrStage<1, [MEC_RSV]>] >,
-  InstrItinData<IIC_MOVSX_R16_R16, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_MOVSX_R32_R32, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  //zero extension movs
-  InstrItinData<IIC_MOVZX, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_MOVZX_R16_R8, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_MOVZX_R16_M8, [InstrStage<1, [IEC_RSV0, IEC_RSV1], 0>,
-                  InstrStage<1, [MEC_RSV]>] >,
-
-  InstrItinData<IIC_REP_MOVS, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_REP_STOS, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-
-  // SSE binary operations
-  // arithmetic fp scalar
-  InstrItinData<IIC_SSE_ALU_F32S_RR, [InstrStage<3, [FPC_RSV0, FPC_RSV1]>] >,
-  InstrItinData<IIC_SSE_ALU_F32S_RM, [InstrStage<3, [FPC_RSV0, FPC_RSV1], 0>,
-                  InstrStage<3, [MEC_RSV]>] >,
-  InstrItinData<IIC_SSE_ALU_F64S_RR, [InstrStage<3, [FPC_RSV0, FPC_RSV1]>] >,
-  InstrItinData<IIC_SSE_ALU_F64S_RM, [InstrStage<3, [FPC_RSV0, FPC_RSV1], 0>,
-                  InstrStage<3, [MEC_RSV]>] >,
-  InstrItinData<IIC_SSE_MUL_F32S_RR, [InstrStage<1, [FPC_RSV0, FPC_RSV1]>] >,
-  InstrItinData<IIC_SSE_MUL_F32S_RM, [InstrStage<1, [FPC_RSV0, FPC_RSV1], 0>,
-                  InstrStage<1, [MEC_RSV]>] >,
-  InstrItinData<IIC_SSE_MUL_F64S_RR, [InstrStage<2, [FPC_RSV0, FPC_RSV1]>] >,
-  InstrItinData<IIC_SSE_MUL_F64S_RM, [InstrStage<2, [FPC_RSV0, FPC_RSV1], 0>,
-                  InstrStage<2, [MEC_RSV]>] >,
-  InstrItinData<IIC_SSE_DIV_F32S_RR, [InstrStage<13, [FPC_RSV0, FPC_RSV1]>] >,
-  InstrItinData<IIC_SSE_DIV_F32S_RM, [InstrStage<13, [FPC_RSV0, FPC_RSV1], 0>,
-                  InstrStage<13, [MEC_RSV]>] >,
-  InstrItinData<IIC_SSE_DIV_F64S_RR, [InstrStage<13, [FPC_RSV0, FPC_RSV1]>] >,
-  InstrItinData<IIC_SSE_DIV_F64S_RM, [InstrStage<13, [FPC_RSV0, FPC_RSV1], 0>,
-                  InstrStage<13, [MEC_RSV]>] >,
-
-  InstrItinData<IIC_SSE_COMIS_RR, [InstrStage<1, [FPC_RSV0, FPC_RSV1]>] >,
-  InstrItinData<IIC_SSE_COMIS_RM, [InstrStage<1, [FPC_RSV0, FPC_RSV1]>] >,
-
-  InstrItinData<IIC_SSE_HADDSUB_RR, [InstrStage<6, [FPC_RSV0, FPC_RSV1]>] >,
-  InstrItinData<IIC_SSE_HADDSUB_RM, [InstrStage<6, [FPC_RSV0, FPC_RSV1], 0>,
-                  InstrStage<6, [MEC_RSV]>] >,
-
-  // arithmetic fp parallel
-  InstrItinData<IIC_SSE_ALU_F32P_RR, [InstrStage<3, [FPC_RSV0, FPC_RSV1]>] >,
-  InstrItinData<IIC_SSE_ALU_F32P_RM, [InstrStage<3, [FPC_RSV0, FPC_RSV1], 0>,
-                  InstrStage<3, [MEC_RSV]>] >,
-  InstrItinData<IIC_SSE_ALU_F64P_RR, [InstrStage<4, [FPC_RSV0, FPC_RSV1]>] >,
-  InstrItinData<IIC_SSE_ALU_F64P_RM, [InstrStage<4, [FPC_RSV0, FPC_RSV1], 0>,
-                  InstrStage<4, [MEC_RSV]>] >,
-  InstrItinData<IIC_SSE_MUL_F32P_RR, [InstrStage<2, [FPC_RSV0, FPC_RSV1]>] >,
-  InstrItinData<IIC_SSE_MUL_F32P_RM, [InstrStage<2, [FPC_RSV0, FPC_RSV1], 0>,
-                  InstrStage<2, [MEC_RSV]>] >,
-  InstrItinData<IIC_SSE_MUL_F64P_RR, [InstrStage<4, [FPC_RSV0, FPC_RSV1]>] >,
-  InstrItinData<IIC_SSE_MUL_F64P_RM, [InstrStage<4, [FPC_RSV0, FPC_RSV1], 0>,
-                  InstrStage<4, [MEC_RSV]>] >,
-  InstrItinData<IIC_SSE_DIV_F32P_RR, [InstrStage<27, [FPC_RSV0, FPC_RSV1]>] >,
-  InstrItinData<IIC_SSE_DIV_F32P_RM, [InstrStage<27, [FPC_RSV0, FPC_RSV1], 0>,
-                  InstrStage<27, [MEC_RSV]>] >,
-  InstrItinData<IIC_SSE_DIV_F64P_RR, [InstrStage<27, [FPC_RSV0, FPC_RSV1]>] >,
-  InstrItinData<IIC_SSE_DIV_F64P_RM, [InstrStage<27, [FPC_RSV0, FPC_RSV1], 0>,
-                  InstrStage<27, [MEC_RSV]>] >,
-
-  // bitwise parallel
-  InstrItinData<IIC_SSE_BIT_P_RR, [InstrStage<1, [FPC_RSV0, FPC_RSV1]>] >,
-  InstrItinData<IIC_SSE_BIT_P_RM, [InstrStage<1, [FPC_RSV0, FPC_RSV1], 0>,
-                  InstrStage<1, [MEC_RSV]>] >,
-
-  // arithmetic int parallel
-  InstrItinData<IIC_SSE_INTALU_P_RR, [InstrStage<1, [FPC_RSV0, FPC_RSV1]>] >,
-  InstrItinData<IIC_SSE_INTALU_P_RM, [InstrStage<1, [FPC_RSV0, FPC_RSV1], 0>,
-                  InstrStage<1, [MEC_RSV]>] >,
-  InstrItinData<IIC_SSE_INTALUQ_P_RR, [InstrStage<4, [FPC_RSV0, FPC_RSV1]>] >,
-  InstrItinData<IIC_SSE_INTALUQ_P_RM, [InstrStage<4, [FPC_RSV0, FPC_RSV1], 0>,
-                  InstrStage<4, [MEC_RSV]>] >,
-
-  // multiply int parallel
-  InstrItinData<IIC_SSE_INTMUL_P_RR, [InstrStage<5, [FPC_RSV0]>] >,
-  InstrItinData<IIC_SSE_INTMUL_P_RM, [InstrStage<5, [FPC_RSV0], 0>,
-                   InstrStage<5, [MEC_RSV]>] >,
-
-  // shift parallel
-  InstrItinData<IIC_SSE_INTSH_P_RR, [InstrStage<2, [FPC_RSV0]>] >,
-  InstrItinData<IIC_SSE_INTSH_P_RM, [InstrStage<2, [FPC_RSV0], 0>,
-                   InstrStage<2, [MEC_RSV]>] >,
-  InstrItinData<IIC_SSE_INTSH_P_RI, [InstrStage<1, [FPC_RSV0]>] >,
-
-  InstrItinData<IIC_SSE_INTSHDQ_P_RI, [InstrStage<1, [FPC_RSV0]>] >,
-
-  InstrItinData<IIC_SSE_SHUFP, [InstrStage<1, [FPC_RSV0]>] >,
-  InstrItinData<IIC_SSE_PSHUF_RI, [InstrStage<1, [FPC_RSV0]>] >,
-  InstrItinData<IIC_SSE_PSHUF_MI, [InstrStage<1, [FPC_RSV0], 0>,
-                   InstrStage<1, [MEC_RSV]>] >,
-
-  InstrItinData<IIC_SSE_UNPCK, [InstrStage<1, [FPC_RSV0]>] >,
-
-  InstrItinData<IIC_SSE_SQRTPS_RR, [InstrStage<26, [FPC_RSV0]>] >,
-  InstrItinData<IIC_SSE_SQRTPS_RM, [InstrStage<26, [FPC_RSV0], 0>,
-                   InstrStage<26, [MEC_RSV]>] >,
-  InstrItinData<IIC_SSE_SQRTSS_RR, [InstrStage<13, [FPC_RSV0]>] >,
-  InstrItinData<IIC_SSE_SQRTSS_RM, [InstrStage<13, [FPC_RSV0], 0>,
-                   InstrStage<13, [MEC_RSV]>] >,
-  InstrItinData<IIC_SSE_SQRTPD_RR, [InstrStage<26, [FPC_RSV0]>] >,
-  InstrItinData<IIC_SSE_SQRTPD_RM, [InstrStage<26, [FPC_RSV0], 0>,
-                   InstrStage<26, [MEC_RSV]>] >,
-  InstrItinData<IIC_SSE_SQRTSD_RR, [InstrStage<13, [FPC_RSV0]>] >,
-  InstrItinData<IIC_SSE_SQRTSD_RM, [InstrStage<13, [FPC_RSV0], 0>,
-                   InstrStage<13, [MEC_RSV]>] >,
-
-  InstrItinData<IIC_SSE_RCPP_RR, [InstrStage<9, [FPC_RSV0]>] >,
-  InstrItinData<IIC_SSE_RCPP_RM, [InstrStage<9, [FPC_RSV0], 0>,
-                   InstrStage<9, [MEC_RSV]>] >,
-  InstrItinData<IIC_SSE_RCPS_RR, [InstrStage<4, [FPC_RSV0]>] >,
-  InstrItinData<IIC_SSE_RCPS_RM, [InstrStage<4, [FPC_RSV0], 0>,
-                   InstrStage<4, [MEC_RSV]>] >,
-
-  InstrItinData<IIC_SSE_MOVMSK, [InstrStage<1, [FPC_RSV0, FPC_RSV1]>] >,
-  InstrItinData<IIC_SSE_MASKMOV, [InstrStage<5, [FPC_RSV0, FPC_RSV1]>] >,
-
-  InstrItinData<IIC_SSE_PEXTRW, [InstrStage<4, [FPC_RSV0, FPC_RSV1]>] >,
-  InstrItinData<IIC_SSE_PINSRW, [InstrStage<1, [FPC_RSV0, FPC_RSV1]>] >,
-
-  InstrItinData<IIC_SSE_PABS_RR, [InstrStage<1, [FPC_RSV0, FPC_RSV1]>] >,
-  InstrItinData<IIC_SSE_PABS_RM, [InstrStage<1, [FPC_RSV0, FPC_RSV1], 0>,
-                  InstrStage<1, [MEC_RSV]>] >,
-
-  InstrItinData<IIC_SSE_MOV_S_RR, [InstrStage<1, [FPC_RSV0, FPC_RSV1]>] >,
-  InstrItinData<IIC_SSE_MOV_S_RM, [InstrStage<1, [FPC_RSV0, FPC_RSV1], 0>,
-                  InstrStage<1, [MEC_RSV]>] >,
-  InstrItinData<IIC_SSE_MOV_S_MR, [InstrStage<1, [FPC_RSV0, FPC_RSV1], 0>,
-                  InstrStage<1, [MEC_RSV]>] >,
-
-  InstrItinData<IIC_SSE_MOVA_P_RR, [InstrStage<1, [FPC_RSV0, FPC_RSV1]>] >,
-  InstrItinData<IIC_SSE_MOVA_P_RM, [InstrStage<1, [FPC_RSV0, FPC_RSV1], 0>,
-                  InstrStage<1, [MEC_RSV]>] >,
-  InstrItinData<IIC_SSE_MOVA_P_MR, [InstrStage<1, [FPC_RSV0, FPC_RSV1], 0>,
-                  InstrStage<1, [MEC_RSV]>] >,
-
-  InstrItinData<IIC_SSE_MOVU_P_RR, [InstrStage<1, [FPC_RSV0, FPC_RSV1]>] >,
-  InstrItinData<IIC_SSE_MOVU_P_RM, [InstrStage<1, [FPC_RSV0, FPC_RSV1], 0>,
-                  InstrStage<1, [MEC_RSV]>] >,
-  InstrItinData<IIC_SSE_MOVU_P_MR, [InstrStage<1, [FPC_RSV0, FPC_RSV1], 0>,
-                  InstrStage<1, [MEC_RSV]>] >,
-
-  InstrItinData<IIC_SSE_MOV_LH, [InstrStage<1, [FPC_RSV0, FPC_RSV1]>] >,
-
-  InstrItinData<IIC_SSE_LDDQU, [InstrStage<1, [FPC_RSV0, FPC_RSV1]>] >,
-
-  InstrItinData<IIC_SSE_MOVDQ, [InstrStage<1, [FPC_RSV0, FPC_RSV1]>] >,
-  InstrItinData<IIC_SSE_MOVD_ToGP, [InstrStage<1, [IEC_RSV0, IEC_RSV1], 0>,
-                  InstrStage<1, [FPC_RSV0, FPC_RSV1]>] >,
-  InstrItinData<IIC_SSE_MOVQ_RR, [InstrStage<1, [FPC_RSV0, FPC_RSV1]>] >,
-
-  InstrItinData<IIC_SSE_MOVNT, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-
-  InstrItinData<IIC_SSE_PREFETCH, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_SSE_PAUSE, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_SSE_LFENCE, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_SSE_MFENCE, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_SSE_SFENCE, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_SSE_LDMXCSR, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_SSE_STMXCSR, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-
-  InstrItinData<IIC_SSE_PHADDSUBD_RR, [InstrStage<6, [FPC_RSV0, FPC_RSV1]>] >,
-  InstrItinData<IIC_SSE_PHADDSUBD_RM, [InstrStage<6, [FPC_RSV0, FPC_RSV1], 0>,
-                  InstrStage<6, [MEC_RSV]>] >,
-  InstrItinData<IIC_SSE_PHADDSUBSW_RR, [InstrStage<9, [FPC_RSV0, FPC_RSV1]>] >,
-  InstrItinData<IIC_SSE_PHADDSUBSW_RM, [InstrStage<9, [FPC_RSV0, FPC_RSV1], 0>,
-                  InstrStage<9, [MEC_RSV]>] >,
-  InstrItinData<IIC_SSE_PHADDSUBW_RR, [InstrStage<9, [FPC_RSV0, FPC_RSV1], 0>,
-                  InstrStage<9, [MEC_RSV]>] >,
-  InstrItinData<IIC_SSE_PHADDSUBW_RM, [InstrStage<9, [FPC_RSV0, FPC_RSV1], 0>,
-                  InstrStage<9, [MEC_RSV]>] >,
-  InstrItinData<IIC_SSE_PSHUFB_RR, [InstrStage<5, [FPC_RSV0, FPC_RSV1]>] >,
-  InstrItinData<IIC_SSE_PSHUFB_RM, [InstrStage<5, [FPC_RSV0, FPC_RSV1], 0>,
-                  InstrStage<5, [MEC_RSV]>] >,
-  InstrItinData<IIC_SSE_PSIGN_RR, [InstrStage<1, [FPC_RSV0, FPC_RSV1]>] >,
-  InstrItinData<IIC_SSE_PSIGN_RM, [InstrStage<1, [FPC_RSV0, FPC_RSV1], 0>,
-                  InstrStage<1, [MEC_RSV]>] >,
-
-  InstrItinData<IIC_SSE_PMADD, [InstrStage<5, [FPC_RSV0, FPC_RSV1]>] >,
-  InstrItinData<IIC_SSE_PMULHRSW, [InstrStage<5, [FPC_RSV0, FPC_RSV1]>] >,
-  InstrItinData<IIC_SSE_PALIGNRR, [InstrStage<1, [FPC_RSV0, FPC_RSV1]>] >,
-  InstrItinData<IIC_SSE_PALIGNRM, [InstrStage<1, [FPC_RSV0, FPC_RSV1], 0>,
-                  InstrStage<1, [MEC_RSV]>] >,
-  InstrItinData<IIC_SSE_MWAIT, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_SSE_MONITOR, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-
-  // conversions
-  // to/from PD ...
-  InstrItinData<IIC_SSE_CVT_PD_RR, [InstrStage<5, [FPC_RSV0, FPC_RSV1]>] >,
-  InstrItinData<IIC_SSE_CVT_PD_RM, [InstrStage<5, [FPC_RSV0, FPC_RSV1], 0>,
-                  InstrStage<5, [MEC_RSV]>] >,
-  // to/from PS except to/from PD and PS2PI
-  InstrItinData<IIC_SSE_CVT_PS_RR, [InstrStage<4, [FPC_RSV0, FPC_RSV1]>] >,
-  InstrItinData<IIC_SSE_CVT_PS_RM, [InstrStage<4, [FPC_RSV0, FPC_RSV1], 0>,
-                  InstrStage<4, [MEC_RSV]>] >,
-  InstrItinData<IIC_SSE_CVT_Scalar_RR, [InstrStage<1, [FPC_RSV0, FPC_RSV1]>] >,
-  InstrItinData<IIC_SSE_CVT_Scalar_RM, [InstrStage<1, [FPC_RSV0, FPC_RSV1], 0>,
-                  InstrStage<1, [MEC_RSV]>] >,
-  InstrItinData<IIC_SSE_CVT_SS2SI32_RR, [InstrStage<4, [FPC_RSV0, FPC_RSV1]>] >,
-  InstrItinData<IIC_SSE_CVT_SS2SI32_RM, [InstrStage<4, [FPC_RSV0, FPC_RSV1], 0>,
-                  InstrStage<4, [MEC_RSV]>] >,
-  InstrItinData<IIC_SSE_CVT_SS2SI64_RR, [InstrStage<4, [FPC_RSV0, FPC_RSV1]>] >,
-  InstrItinData<IIC_SSE_CVT_SS2SI64_RM, [InstrStage<4, [FPC_RSV0, FPC_RSV1], 0>,
-                  InstrStage<4, [MEC_RSV]>] >,
-  InstrItinData<IIC_SSE_CVT_SD2SI_RR, [InstrStage<4, [FPC_RSV0, FPC_RSV1]>] >,
-  InstrItinData<IIC_SSE_CVT_SD2SI_RM, [InstrStage<4, [FPC_RSV0, FPC_RSV1], 0>,
-                  InstrStage<4, [MEC_RSV]>] >,
-
-  // MMX MOVs
-  InstrItinData<IIC_MMX_MOV_MM_RM,  [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_MMX_MOV_REG_MM, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_MMX_MOVQ_RM, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_MMX_MOVQ_RR, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  // other MMX
-  InstrItinData<IIC_MMX_ALU_RM,  [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_MMX_ALU_RR,  [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_MMX_ALUQ_RM, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_MMX_ALUQ_RR, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_MMX_PHADDSUBW_RM, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_MMX_PHADDSUBW_RR, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_MMX_PHADDSUBD_RM, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_MMX_PHADDSUBD_RR, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_MMX_PMUL, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_MMX_MISC_FUNC_MEM, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_MMX_MISC_FUNC_REG, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_MMX_PSADBW,   [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_MMX_SHIFT_RI, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_MMX_SHIFT_RM, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_MMX_SHIFT_RR, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_MMX_UNPCK_H_RM, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_MMX_UNPCK_H_RR, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_MMX_UNPCK_L, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_MMX_PCK_RM,  [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_MMX_PCK_RR,  [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_MMX_PSHUF,   [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_MMX_PEXTR,   [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_MMX_PINSRW,  [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_MMX_MASKMOV, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  // conversions
-  // from/to PD
-  InstrItinData<IIC_MMX_CVT_PD_RR, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_MMX_CVT_PD_RM, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  // from/to PI
-  InstrItinData<IIC_MMX_CVT_PS_RR, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_MMX_CVT_PS_RM, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-
-  InstrItinData<IIC_CMPX_LOCK, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_CMPX_LOCK_8, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_CMPX_LOCK_8B, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_CMPX_LOCK_16B, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-
-  InstrItinData<IIC_XADD_LOCK_MEM, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_XADD_LOCK_MEM, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-
-  InstrItinData<IIC_FILD, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_FLD,  [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_FLD80, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
+def SLMModel : SchedMachineModel {
+  // All x86 instructions are modeled as a single micro-op, and SLM can decode 2
+  // instructions per cycle.
+  let IssueWidth = 2;
+  let MicroOpBufferSize = 32; // Based on the reorder buffer.
+  let LoadLatency = 3;
+  let MispredictPenalty = 10;
+
+  // FIXME: SSE4 is unimplemented. This flag is set to allow
+  // the scheduler to assign a default model to unrecognized opcodes.
+  let CompleteModel = 0;
+}
 
-  InstrItinData<IIC_FST,   [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_FST80, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_FIST,  [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
+let SchedModel = SLMModel in {
+
+// Silveromnt has 5 reservation stations for micro-ops
+
+def IEC_RSV0 : ProcResource<1>;
+def IEC_RSV1 : ProcResource<1>;
+def FPC_RSV0 : ProcResource<1> { let BufferSize = 1; }
+def FPC_RSV1 : ProcResource<1> { let BufferSize = 1; }
+def MEC_RSV  : ProcResource<1>;
+
+// Many micro-ops are capable of issuing on multiple ports.
+def IEC_RSV01  : ProcResGroup<[IEC_RSV0, IEC_RSV1]>;
+def FPC_RSV01  : ProcResGroup<[FPC_RSV0, FPC_RSV1]>;
+
+def SMDivider      : ProcResource<1>;
+def SMFPMultiplier : ProcResource<1>;
+def SMFPDivider    : ProcResource<1>;
+
+// Loads are 3 cycles, so ReadAfterLd registers needn't be available until 3
+// cycles after the memory operand.
+def : ReadAdvance<ReadAfterLd, 3>;
+
+// Many SchedWrites are defined in pairs with and without a folded load.
+// Instructions with folded loads are usually micro-fused, so they only appear
+// as two micro-ops when queued in the reservation station.
+// This multiclass defines the resource usage for variants with and without
+// folded loads.
+multiclass SMWriteResPair<X86FoldableSchedWrite SchedRW,
+                          ProcResourceKind ExePort,
+                          int Lat> {
+  // Register variant is using a single cycle on ExePort.
+  def : WriteRes<SchedRW, [ExePort]> { let Latency = Lat; }
+
+  // Memory variant also uses a cycle on MEC_RSV and adds 3 cycles to the
+  // latency.
+  def : WriteRes<SchedRW.Folded, [MEC_RSV, ExePort]> {
+     let Latency = !add(Lat, 3);
+  }
+}
 
-  InstrItinData<IIC_FLDZ,   [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_FUCOM,  [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_FUCOMI, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_FCOMI,  [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_FNSTSW, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_FNSTCW, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_FLDCW,  [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_FNINIT, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_FFREE,  [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_FNCLEX, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_WAIT,  [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_FXAM,  [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_FNOP,  [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_FLDL,  [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_F2XM1,  [InstrStage<88, [FPC_RSV0, FPC_RSV1]>] >,
-  InstrItinData<IIC_FYL2X,  [InstrStage<296, [FPC_RSV0, FPC_RSV1]>] >,
-  InstrItinData<IIC_FPTAN,  [InstrStage<281, [FPC_RSV0, FPC_RSV1]>] >,
-  InstrItinData<IIC_FPATAN,  [InstrStage<296, [FPC_RSV0, FPC_RSV1]>] >,
-  InstrItinData<IIC_FXTRACT,  [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_FPREM1,  [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_FPSTP,  [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_FPREM,  [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_FYL2XP1,  [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_FSINCOS,  [InstrStage<281, [FPC_RSV0, FPC_RSV1]>] >,
-  InstrItinData<IIC_FRNDINT,  [InstrStage<25, [FPC_RSV0, FPC_RSV1]>] >,
-  InstrItinData<IIC_FSCALE,  [InstrStage<74, [FPC_RSV0, FPC_RSV1]>] >,
-  InstrItinData<IIC_FCOMPP,  [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_FXSAVE,  [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_FXRSTOR,  [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_FXCH, [InstrStage<1, [FPC_RSV0, FPC_RSV1]>] >,
+// A folded store needs a cycle on MEC_RSV for the store data, but it does not
+// need an extra port cycle to recompute the address.
+def : WriteRes<WriteRMW, [MEC_RSV]>;
+
+def : WriteRes<WriteStore, [IEC_RSV01, MEC_RSV]>;
+def : WriteRes<WriteLoad,  [MEC_RSV]> { let Latency = 3; }
+def : WriteRes<WriteMove,  [IEC_RSV01]>;
+def : WriteRes<WriteZero,  []>;
+
+defm : SMWriteResPair<WriteALU,   IEC_RSV01, 1>;
+defm : SMWriteResPair<WriteIMul,  IEC_RSV1,  3>;
+defm : SMWriteResPair<WriteShift, IEC_RSV0,  1>;
+defm : SMWriteResPair<WriteJump,  IEC_RSV1,   1>;
+
+// This is for simple LEAs with one or two input operands.
+// The complex ones can only execute on port 1, and they require two cycles on
+// the port to read all inputs. We don't model that.
+def : WriteRes<WriteLEA, [IEC_RSV1]>;
+
+// This is quite rough, latency depends on the dividend.
+def : WriteRes<WriteIDiv, [IEC_RSV01, SMDivider]> {
+  let Latency = 25;
+  let ResourceCycles = [1, 25];
+}
+def : WriteRes<WriteIDivLd, [MEC_RSV, IEC_RSV01, SMDivider]> {
+  let Latency = 29;
+  let ResourceCycles = [1, 1, 25];
+}
 
-  // System instructions
-  InstrItinData<IIC_CPUID, [InstrStage<60, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_INT,   [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_INT3,  [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_INVD,  [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_INVLPG, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_IRET,  [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_HLT,   [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_LXS,   [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_LTR,   [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_RDTSC, [InstrStage<30, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_RSM,   [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_SIDT,  [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_SGDT,  [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_SLDT,  [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_STR,    [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_SWAPGS, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_SYSCALL, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_SYS_ENTER_EXIT, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
+// Scalar and vector floating point.
+defm : SMWriteResPair<WriteFAdd,   FPC_RSV1, 3>;
+defm : SMWriteResPair<WriteFRcp,   FPC_RSV0, 5>;
+defm : SMWriteResPair<WriteFSqrt,  FPC_RSV0, 15>;
+defm : SMWriteResPair<WriteCvtF2I, FPC_RSV01, 4>;
+defm : SMWriteResPair<WriteCvtI2F, FPC_RSV01, 4>;
+defm : SMWriteResPair<WriteCvtF2F, FPC_RSV01, 4>;
+defm : SMWriteResPair<WriteFShuffle,  FPC_RSV0,  1>;
+defm : SMWriteResPair<WriteFBlend,  FPC_RSV0,  1>;
+
+// This is quite rough, latency depends on precision
+def : WriteRes<WriteFMul, [FPC_RSV0, SMFPMultiplier]> {
+  let Latency = 5;
+  let ResourceCycles = [1, 2];
+}
+def : WriteRes<WriteFMulLd, [MEC_RSV, FPC_RSV0, SMFPMultiplier]> {
+  let Latency = 8;
+  let ResourceCycles = [1, 1, 2];
+}
 
-  InstrItinData<IIC_IN_RR,  [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_IN_RI,  [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_OUT_RR, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_OUT_IR, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_INS,    [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
+def : WriteRes<WriteFDiv, [FPC_RSV0, SMFPDivider]> {
+  let Latency = 34;
+  let ResourceCycles = [1, 34];
+}
+def : WriteRes<WriteFDivLd, [MEC_RSV, FPC_RSV0, SMFPDivider]> {
+  let Latency = 37;
+  let ResourceCycles = [1, 1, 34];
+}
 
-  InstrItinData<IIC_MOV_REG_DR, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_MOV_DR_REG, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  // worst case for mov REG_CRx
-  InstrItinData<IIC_MOV_REG_CR, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_MOV_CR_REG, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
+// Vector integer operations.
+defm : SMWriteResPair<WriteVecShift, FPC_RSV0,  1>;
+defm : SMWriteResPair<WriteVecLogic, FPC_RSV01, 1>;
+defm : SMWriteResPair<WriteVecALU,   FPC_RSV01,  1>;
+defm : SMWriteResPair<WriteVecIMul,  FPC_RSV0,   4>;
+defm : SMWriteResPair<WriteShuffle,  FPC_RSV0,  1>;
+defm : SMWriteResPair<WriteBlend,  FPC_RSV0,  1>;
+defm : SMWriteResPair<WriteMPSAD,  FPC_RSV0,  7>;
+
+// String instructions.
+// Packed Compare Implicit Length Strings, Return Mask
+def : WriteRes<WritePCmpIStrM, [FPC_RSV0]> {
+  let Latency = 13;
+  let ResourceCycles = [13];
+}
+def : WriteRes<WritePCmpIStrMLd, [FPC_RSV0, MEC_RSV]> {
+  let Latency = 13;
+  let ResourceCycles = [13, 1];
+}
 
-  InstrItinData<IIC_MOV_REG_SR, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_MOV_MEM_SR, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_MOV_SR_REG, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_MOV_SR_MEM, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  // LAR
-  InstrItinData<IIC_LAR_RM,  [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_LAR_RR,  [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  // LSL
-  InstrItinData<IIC_LSL_RM,  [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_LSL_RR,  [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
+// Packed Compare Explicit Length Strings, Return Mask
+def : WriteRes<WritePCmpEStrM, [FPC_RSV0]> {
+  let Latency = 17;
+  let ResourceCycles = [17];
+}
+def : WriteRes<WritePCmpEStrMLd, [FPC_RSV0, MEC_RSV]> {
+  let Latency = 17;
+  let ResourceCycles = [17, 1];
+}
 
-  InstrItinData<IIC_LGDT, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_LIDT, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_LLDT_REG, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_LLDT_MEM, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  // push control register, segment registers
-  InstrItinData<IIC_PUSH_CS, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_PUSH_SR, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  // pop control register, segment registers
-  InstrItinData<IIC_POP_SR,    [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_POP_SR_SS, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  // VERR, VERW
-  InstrItinData<IIC_VERR,     [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_VERW_REG, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_VERW_MEM, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  // WRMSR, RDMSR
-  InstrItinData<IIC_WRMSR, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_RDMSR, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_RDPMC, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  // SMSW, LMSW
-  InstrItinData<IIC_SMSW, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_LMSW_REG, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_LMSW_MEM, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
+// Packed Compare Implicit Length Strings, Return Index
+def : WriteRes<WritePCmpIStrI, [FPC_RSV0]> {
+  let Latency = 17;
+  let ResourceCycles = [17];
+}
+def : WriteRes<WritePCmpIStrILd, [FPC_RSV0, MEC_RSV]> {
+  let Latency = 17;
+  let ResourceCycles = [17, 1];
+}
 
-  InstrItinData<IIC_ENTER, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_LEAVE, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
+// Packed Compare Explicit Length Strings, Return Index
+def : WriteRes<WritePCmpEStrI, [FPC_RSV0]> {
+  let Latency = 21;
+  let ResourceCycles = [21];
+}
+def : WriteRes<WritePCmpEStrILd, [FPC_RSV0, MEC_RSV]> {
+  let Latency = 21;
+  let ResourceCycles = [21, 1];
+}
 
-  InstrItinData<IIC_POP_MEM, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_POP_REG16, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_POP_REG, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_POP_F, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_POP_FD, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_POP_A, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
+// AES Instructions.
+def : WriteRes<WriteAESDecEnc, [FPC_RSV0]> {
+  let Latency = 8;
+  let ResourceCycles = [5];
+}
+def : WriteRes<WriteAESDecEncLd, [FPC_RSV0, MEC_RSV]> {
+  let Latency = 8;
+  let ResourceCycles = [5, 1];
+}
 
-  InstrItinData<IIC_PUSH_IMM, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_PUSH_MEM, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_PUSH_REG, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_PUSH_F, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_PUSH_A, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
+def : WriteRes<WriteAESIMC, [FPC_RSV0]> {
+  let Latency = 8;
+  let ResourceCycles = [5];
+}
+def : WriteRes<WriteAESIMCLd, [FPC_RSV0, MEC_RSV]> {
+  let Latency = 8;
+  let ResourceCycles = [5, 1];
+}
 
-  InstrItinData<IIC_BSWAP, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_BIT_SCAN_MEM, [InstrStage<10, [IEC_RSV0, IEC_RSV1], 0>,
-                  InstrStage<10, [MEC_RSV]>] >,
-  InstrItinData<IIC_BIT_SCAN_REG, [InstrStage<10, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_MOVS, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_STOS, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_SCAS, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_CMPS, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_MOV, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_MOV_MEM, [InstrStage<1, [IEC_RSV0, IEC_RSV1], 0>,
-                  InstrStage<1, [MEC_RSV]>] >,
-  InstrItinData<IIC_AHF, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_BT_MI, [InstrStage<1, [IEC_RSV0, IEC_RSV1], 0>,
-                  InstrStage<1, [MEC_RSV]>] >,
-  InstrItinData<IIC_BT_MR, [InstrStage<1, [IEC_RSV0, IEC_RSV1], 0>,
-                  InstrStage<1, [MEC_RSV]>] >,
-  InstrItinData<IIC_BT_RI, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_BT_RR, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_BTX_MI, [InstrStage<1, [IEC_RSV0, IEC_RSV1], 0>,
-                  InstrStage<1, [MEC_RSV]>] >,
-  InstrItinData<IIC_BTX_MR, [InstrStage<1, [IEC_RSV0, IEC_RSV1], 0>,
-                  InstrStage<1, [MEC_RSV]>] >,
-  InstrItinData<IIC_BTX_RI, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_BTX_RR, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_XCHG_REG, [InstrStage<5, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_XCHG_MEM, [InstrStage<5, [IEC_RSV0, IEC_RSV1], 0>,
-                  InstrStage<5, [MEC_RSV]>] >,
-  InstrItinData<IIC_XADD_REG, [InstrStage<5, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_XADD_MEM, [InstrStage<5, [IEC_RSV0, IEC_RSV1], 0>,
-                  InstrStage<5, [MEC_RSV]>] >,
-  InstrItinData<IIC_CMPXCHG_MEM, [InstrStage<6, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_CMPXCHG_REG, [InstrStage<6, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_CMPXCHG_MEM8, [InstrStage<6, [IEC_RSV0, IEC_RSV1], 0>,
-                  InstrStage<6, [MEC_RSV]>] >,
-  InstrItinData<IIC_CMPXCHG_REG8, [InstrStage<6, [IEC_RSV0, IEC_RSV1], 0>,
-                  InstrStage<6, [MEC_RSV]>] >,
-  InstrItinData<IIC_CMPXCHG_8B, [InstrStage<6, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_CMPXCHG_16B, [InstrStage<6, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_LODS, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_OUTS, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_CLC, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_CLD, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_CLI, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_CMC, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_CLTS, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_STC, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_STI, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_STD, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_XLAT, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_AAA, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_AAD, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_AAM, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_AAS, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_DAA, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_DAS, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_BOUND, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_ARPL_REG, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_ARPL_MEM, [InstrStage<1, [IEC_RSV0, IEC_RSV1], 0>,
-                  InstrStage<1, [MEC_RSV]>] >,
-  InstrItinData<IIC_MOVBE, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_AES, [InstrStage<8, [FPC_RSV0]>] >,
-  InstrItinData<IIC_BLEND_NOMEM, [InstrStage<4, [FPC_RSV0, FPC_RSV1]>] >,
-  InstrItinData<IIC_BLEND_MEM, [InstrStage<4, [FPC_RSV0, FPC_RSV1], 0>,
-                  InstrStage<4, [MEC_RSV]>] >,
-  InstrItinData<IIC_BIT_SCAN_MEM, [InstrStage<10, [IEC_RSV0, IEC_RSV1], 0>,
-                  InstrStage<10, [MEC_RSV]>] >,
-  InstrItinData<IIC_BIT_SCAN_REG, [InstrStage<10, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_CBW, [InstrStage<4, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_CRC32_REG, [InstrStage<3, [IEC_RSV0, IEC_RSV1]>] >,
-  InstrItinData<IIC_CRC32_MEM, [InstrStage<3, [IEC_RSV0, IEC_RSV1], 0>,
-                  InstrStage<3, [MEC_RSV]>] >,
-  InstrItinData<IIC_SSE_DPPD_RR, [InstrStage<12, [FPC_RSV0, FPC_RSV1]>] >,
-  InstrItinData<IIC_SSE_DPPD_RM, [InstrStage<12, [FPC_RSV0, FPC_RSV1], 0>,
-                  InstrStage<12, [MEC_RSV]>] >,
-  InstrItinData<IIC_SSE_DPPS_RR, [InstrStage<15, [FPC_RSV0, FPC_RSV1]>] >,
-  InstrItinData<IIC_SSE_DPPS_RM, [InstrStage<15, [FPC_RSV0, FPC_RSV1], 0>,
-                  InstrStage<15, [MEC_RSV]>] >,
-  InstrItinData<IIC_MMX_EMMS, [InstrStage<10, [FPC_RSV0, FPC_RSV1]>] >,
-  InstrItinData<IIC_SSE_EXTRACTPS_RR, [InstrStage<4, [FPC_RSV0, FPC_RSV1]>] >,
-  InstrItinData<IIC_SSE_EXTRACTPS_RM, [InstrStage<4, [FPC_RSV0, FPC_RSV1], 0>,
-                  InstrStage<4, [MEC_RSV]>] >,
-  InstrItinData<IIC_SSE_INSERTPS_RR, [InstrStage<1, [FPC_RSV0, FPC_RSV1]>] >,
-  InstrItinData<IIC_SSE_INSERTPS_RM, [InstrStage<1, [FPC_RSV0, FPC_RSV1], 0>,
-                  InstrStage<1, [MEC_RSV]>] >,
-  InstrItinData<IIC_SSE_MPSADBW_RR, [InstrStage<1, [FPC_RSV0, FPC_RSV1]>] >,
-  InstrItinData<IIC_SSE_MPSADBW_RM, [InstrStage<1, [FPC_RSV0, FPC_RSV1], 0>,
-                  InstrStage<1, [MEC_RSV]>] >,
-  InstrItinData<IIC_SSE_PMULLD_RR, [InstrStage<11, [FPC_RSV0, FPC_RSV1]>] >,
-  InstrItinData<IIC_SSE_PMULLD_RM, [InstrStage<11, [FPC_RSV0, FPC_RSV1], 0>,
-                  InstrStage<11, [MEC_RSV]>] >,
-  InstrItinData<IIC_SSE_ROUNDPS_REG, [InstrStage<5, [FPC_RSV0, FPC_RSV1]>] >,
-  InstrItinData<IIC_SSE_ROUNDPS_MEM, [InstrStage<5, [FPC_RSV0, FPC_RSV1], 0>,
-                  InstrStage<5, [MEC_RSV]>] >,
-  InstrItinData<IIC_SSE_ROUNDPD_REG, [InstrStage<4, [FPC_RSV0, FPC_RSV1]>] >,
-  InstrItinData<IIC_SSE_ROUNDPD_MEM, [InstrStage<4, [FPC_RSV0, FPC_RSV1], 0>,
-                  InstrStage<4, [MEC_RSV]>] >,
-  InstrItinData<IIC_SSE_POPCNT_RR, [InstrStage<4, [IEC_RSV1]>] >,
-  InstrItinData<IIC_SSE_POPCNT_RM, [InstrStage<4, [IEC_RSV1], 0>,
-                  InstrStage<4, [MEC_RSV]>] >,
-  InstrItinData<IIC_SSE_PCLMULQDQ_RR, [InstrStage<10, [IEC_RSV1]>] >,
-  InstrItinData<IIC_SSE_PCLMULQDQ_RM, [InstrStage<10, [IEC_RSV1], 0>,
-                  InstrStage<10, [MEC_RSV]>] >,
+def : WriteRes<WriteAESKeyGen, [FPC_RSV0]> {
+  let Latency = 8;
+  let ResourceCycles = [5];
+}
+def : WriteRes<WriteAESKeyGenLd, [FPC_RSV0, MEC_RSV]> {
+  let Latency = 8;
+  let ResourceCycles = [5, 1];
+}
 
-  InstrItinData<IIC_NOP, [InstrStage<1, [IEC_RSV0, IEC_RSV1]>] >
-  ]>;
+// Carry-less multiplication instructions.
+def : WriteRes<WriteCLMul, [FPC_RSV0]> {
+  let Latency = 10;
+  let ResourceCycles = [10];
+}
+def : WriteRes<WriteCLMulLd, [FPC_RSV0, MEC_RSV]> {
+  let Latency = 10;
+  let ResourceCycles = [10, 1];
+}
 
-// Silvermont machine model.
-def SLMModel : SchedMachineModel {
-  let IssueWidth = 2;  // Allows 2 instructions per scheduling group.
-  let MinLatency = 1;  // InstrStage cycles overrides MinLatency.
-                       // OperandCycles may be used for expected latency.
-  let LoadLatency = 3; // Expected cycles, may be overriden by OperandCycles.
-  let HighLatency = 30;// Expected, may be overriden by OperandCycles.
 
-  let Itineraries = SLMItineraries;
-}
+def : WriteRes<WriteSystem,     [FPC_RSV0]> { let Latency = 100; }
+def : WriteRes<WriteMicrocoded, [FPC_RSV0]> { let Latency = 100; }
+def : WriteRes<WriteFence, [MEC_RSV]>;
+def : WriteRes<WriteNop, []>;
+
+// AVX is not supported on that architecture, but we should define the basic
+// scheduling resources anyway.
+def  : WriteRes<WriteIMulH, [FPC_RSV0]>;
+defm : SMWriteResPair<WriteVarBlend, FPC_RSV0, 1>;
+defm : SMWriteResPair<WriteFVarBlend, FPC_RSV0, 1>;
+defm : SMWriteResPair<WriteFShuffle256, FPC_RSV0,  1>;
+defm : SMWriteResPair<WriteShuffle256, FPC_RSV0,  1>;
+defm : SMWriteResPair<WriteVarVecShift, FPC_RSV0,  1>;
+} // SchedModel
-- 
2.34.1