+
+//===----------------------------------------------------------------------===//
+// Callee-saved Registers.
+//===----------------------------------------------------------------------===//
+
+def CSR_NoRegs : CalleeSavedRegs<(add)>;
+
+def CSR_32 : CalleeSavedRegs<(add ESI, EDI, EBX, EBP)>;
+def CSR_64 : CalleeSavedRegs<(add RBX, R12, R13, R14, R15, RBP)>;
+
+def CSR_32EHRet : CalleeSavedRegs<(add EAX, EDX, CSR_32)>;
+def CSR_64EHRet : CalleeSavedRegs<(add RAX, RDX, CSR_64)>;
+
+def CSR_Win64 : CalleeSavedRegs<(add RBX, RBP, RDI, RSI, R12, R13, R14, R15,
+ (sequence "XMM%u", 6, 15))>;
+
+// The function used by Darwin to obtain the address of a thread-local variable
+// uses rdi to pass a single parameter and rax for the return value. All other
+// GPRs are preserved.
+def CSR_64_TLS_Darwin : CalleeSavedRegs<(add CSR_64, RCX, RDX, RSI,
+ R8, R9, R10, R11)>;
+
+// All GPRs - except r11
+def CSR_64_RT_MostRegs : CalleeSavedRegs<(add CSR_64, RAX, RCX, RDX, RSI, RDI,
+ R8, R9, R10, RSP)>;
+
+// All registers - except r11
+def CSR_64_RT_AllRegs : CalleeSavedRegs<(add CSR_64_RT_MostRegs,
+ (sequence "XMM%u", 0, 15))>;
+def CSR_64_RT_AllRegs_AVX : CalleeSavedRegs<(add CSR_64_RT_MostRegs,
+ (sequence "YMM%u", 0, 15))>;
+
+def CSR_64_MostRegs : CalleeSavedRegs<(add RBX, RCX, RDX, RSI, RDI, R8, R9, R10,
+ R11, R12, R13, R14, R15, RBP,
+ (sequence "XMM%u", 0, 15))>;
+
+def CSR_32_AllRegs : CalleeSavedRegs<(add EAX, EBX, ECX, EDX, EBP, ESI,
+ EDI, ESP)>;
+def CSR_32_AllRegs_SSE : CalleeSavedRegs<(add CSR_32_AllRegs,
+ (sequence "XMM%u", 0, 7))>;
+
+def CSR_64_AllRegs : CalleeSavedRegs<(add CSR_64_MostRegs, RAX, RSP,
+ (sequence "XMM%u", 16, 31))>;
+def CSR_64_AllRegs_AVX : CalleeSavedRegs<(sub (add CSR_64_MostRegs, RAX, RSP,
+ (sequence "YMM%u", 0, 31)),
+ (sequence "XMM%u", 0, 15))>;
+
+// Standard C + YMM6-15
+def CSR_Win64_Intel_OCL_BI_AVX : CalleeSavedRegs<(add RBX, RBP, RDI, RSI, R12,
+ R13, R14, R15,
+ (sequence "YMM%u", 6, 15))>;
+
+def CSR_Win64_Intel_OCL_BI_AVX512 : CalleeSavedRegs<(add RBX, RBP, RDI, RSI,
+ R12, R13, R14, R15,
+ (sequence "ZMM%u", 6, 21),
+ K4, K5, K6, K7)>;
+//Standard C + XMM 8-15
+def CSR_64_Intel_OCL_BI : CalleeSavedRegs<(add CSR_64,
+ (sequence "XMM%u", 8, 15))>;
+
+//Standard C + YMM 8-15
+def CSR_64_Intel_OCL_BI_AVX : CalleeSavedRegs<(add CSR_64,
+ (sequence "YMM%u", 8, 15))>;
+
+def CSR_64_Intel_OCL_BI_AVX512 : CalleeSavedRegs<(add RBX, RDI, RSI, R14, R15,
+ (sequence "ZMM%u", 16, 31),
+ K4, K5, K6, K7)>;
+
+// Only R12 is preserved for PHP calls in HHVM.
+def CSR_64_HHVM : CalleeSavedRegs<(add R12)>;