Vendor import of llvm trunk r300422:vendor/llvm/llvm-trunk-r300422

https://llvm.org/svn/llvm-project/llvm/trunk@300422

1 files changed, 104 insertions, 0 deletions

diff --git a/lib/Target/X86/X86GenRegisterBankInfo.def b/lib/Target/X86/X86GenRegisterBankInfo.def
new file mode 100644
index 000000000000..06be142432f7
--- /dev/null
+++ b/lib/Target/X86/X86GenRegisterBankInfo.def
@@ -0,0 +1,104 @@
+//===- X86GenRegisterBankInfo.def ----------------------------*- C++ -*-==//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+/// \file
+/// This file defines all the static objects used by X86RegisterBankInfo.
+/// \todo This should be generated by TableGen.
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_BUILD_GLOBAL_ISEL
+#error "You shouldn't build this"
+#endif
+
+#ifdef GET_TARGET_REGBANK_INFO_IMPL
+RegisterBankInfo::PartialMapping X86GenRegisterBankInfo::PartMappings[]{
+    /* StartIdx, Length, RegBank */
+    // GPR value
+    {0, 8, X86::GPRRegBank},   // :0
+    {0, 16, X86::GPRRegBank},  // :1
+    {0, 32, X86::GPRRegBank},  // :2
+    {0, 64, X86::GPRRegBank},  // :3
+    // FR32/64 , xmm registers
+    {0, 32, X86::VECRRegBank},  // :4
+    {0, 64, X86::VECRRegBank},  // :5
+    // VR128/256/512
+    {0, 128, X86::VECRRegBank}, // :6
+    {0, 256, X86::VECRRegBank}, // :7
+    {0, 512, X86::VECRRegBank}, // :8   
+};
+#endif // GET_TARGET_REGBANK_INFO_IMPL
+
+#ifdef GET_TARGET_REGBANK_INFO_CLASS
+enum PartialMappingIdx {
+  PMI_None = -1,
+  PMI_GPR8,
+  PMI_GPR16,
+  PMI_GPR32,
+  PMI_GPR64,
+  PMI_FP32,
+  PMI_FP64,
+  PMI_VEC128,
+  PMI_VEC256,
+  PMI_VEC512
+};
+#endif // GET_TARGET_REGBANK_INFO_CLASS
+
+#ifdef GET_TARGET_REGBANK_INFO_IMPL
+#define INSTR_3OP(INFO) INFO, INFO, INFO,
+#define BREAKDOWN(INDEX, NUM)                                                  \
+  { &X86GenRegisterBankInfo::PartMappings[INDEX], NUM }
+// ValueMappings.
+RegisterBankInfo::ValueMapping X86GenRegisterBankInfo::ValMappings[]{
+    /* BreakDown, NumBreakDowns */
+    // 3-operands instructions (all binary operations should end up with one of
+    // those mapping).
+    INSTR_3OP(BREAKDOWN(PMI_GPR8, 1))  // 0: GPR_8
+    INSTR_3OP(BREAKDOWN(PMI_GPR16, 1)) // 3: GPR_16
+    INSTR_3OP(BREAKDOWN(PMI_GPR32, 1)) // 6: GPR_32
+    INSTR_3OP(BREAKDOWN(PMI_GPR64, 1)) // 9: GPR_64    
+    INSTR_3OP(BREAKDOWN(PMI_FP32, 1))   // 12: Fp32
+    INSTR_3OP(BREAKDOWN(PMI_FP64, 1))   // 15: Fp64
+    INSTR_3OP(BREAKDOWN(PMI_VEC128, 1)) // 18: Vec128
+    INSTR_3OP(BREAKDOWN(PMI_VEC256, 1)) // 21: Vec256
+    INSTR_3OP(BREAKDOWN(PMI_VEC512, 1)) // 24: Vec512    
+};
+#undef INSTR_3OP
+#undef BREAKDOWN
+#endif // GET_TARGET_REGBANK_INFO_IMPL
+
+#ifdef GET_TARGET_REGBANK_INFO_CLASS
+enum ValueMappingIdx {
+  VMI_None = -1,
+  VMI_3OpsGpr8Idx =  PMI_GPR8  * 3,
+  VMI_3OpsGpr16Idx = PMI_GPR16 * 3,
+  VMI_3OpsGpr32Idx = PMI_GPR32 * 3,
+  VMI_3OpsGpr64Idx = PMI_GPR64 * 3,  
+  VMI_3OpsFp32Idx = PMI_FP32 * 3,
+  VMI_3OpsFp64Idx = PMI_FP64 * 3,
+  VMI_3OpsVec128Idx = PMI_VEC128 * 3,
+  VMI_3OpsVec256Idx = PMI_VEC256 * 3,
+  VMI_3OpsVec512Idx = PMI_VEC512 * 3,
+};
+#undef GET_TARGET_REGBANK_INFO_CLASS
+#endif // GET_TARGET_REGBANK_INFO_CLASS
+
+#ifdef GET_TARGET_REGBANK_INFO_IMPL
+#undef GET_TARGET_REGBANK_INFO_IMPL
+const RegisterBankInfo::ValueMapping *
+X86GenRegisterBankInfo::getValueMapping(PartialMappingIdx Idx,
+                                        unsigned NumOperands) {
+  
+  // We can use VMI_3Ops Mapping for all the cases.
+  if (NumOperands <= 3 && (Idx >= PMI_GPR8 && Idx <= PMI_VEC512))
+    return &ValMappings[(unsigned)Idx * 3];
+  
+  llvm_unreachable("Unsupported PartialMappingIdx.");
+}
+
+#endif // GET_TARGET_REGBANK_INFO_IMPL
+