[X86] Use static_asserts instead of assert (NFC)

Identified with misc-static-assert.

Author: kazutakahirata

llvm/lib/Target/X86/MCTargetDesc/X86BaseInfo.h

@@ -1168,33 +1168,34 @@ inline int getMemoryOperandNo(uint64_t TSFlags) {
 
 /// \returns true if the register is a XMM.
 inline bool isXMMReg(unsigned RegNo) {
-  assert(X86::XMM15 - X86::XMM0 == 15 &&
-         "XMM0-15 registers are not continuous");
-  assert(X86::XMM31 - X86::XMM16 == 15 &&
-         "XMM16-31 registers are not continuous");
+  static_assert(X86::XMM15 - X86::XMM0 == 15,
+                "XMM0-15 registers are not continuous");
+  static_assert(X86::XMM31 - X86::XMM16 == 15,
+                "XMM16-31 registers are not continuous");
   return (RegNo >= X86::XMM0 && RegNo <= X86::XMM15) ||
          (RegNo >= X86::XMM16 && RegNo <= X86::XMM31);
 }
 
 /// \returns true if the register is a YMM.
 inline bool isYMMReg(unsigned RegNo) {
-  assert(X86::YMM15 - X86::YMM0 == 15 &&
-         "YMM0-15 registers are not continuous");
-  assert(X86::YMM31 - X86::YMM16 == 15 &&
-         "YMM16-31 registers are not continuous");
+  static_assert(X86::YMM15 - X86::YMM0 == 15,
+                "YMM0-15 registers are not continuous");
+  static_assert(X86::YMM31 - X86::YMM16 == 15,
+                "YMM16-31 registers are not continuous");
   return (RegNo >= X86::YMM0 && RegNo <= X86::YMM15) ||
          (RegNo >= X86::YMM16 && RegNo <= X86::YMM31);
 }
 
 /// \returns true if the register is a ZMM.
 inline bool isZMMReg(unsigned RegNo) {
-  assert(X86::ZMM31 - X86::ZMM0 == 31 && "ZMM registers are not continuous");
+  static_assert(X86::ZMM31 - X86::ZMM0 == 31,
+                "ZMM registers are not continuous");
   return RegNo >= X86::ZMM0 && RegNo <= X86::ZMM31;
 }
 
 /// \returns true if \p RegNo is an apx extended register.
 inline bool isApxExtendedReg(unsigned RegNo) {
-  assert(X86::R31WH - X86::R16 == 95 && "EGPRs are not continuous");
+  static_assert(X86::R31WH - X86::R16 == 95, "EGPRs are not continuous");
   return RegNo >= X86::R16 && RegNo <= X86::R31WH;
 }
 

llvm/lib/Target/X86/X86RegisterInfo.cpp

@@ -649,10 +649,11 @@ unsigned X86RegisterInfo::getNumSupportedRegs(const MachineFunction &MF) const {
   // APX registers (R16-R31)
   //
   // and try to return the minimum number of registers supported by the target.
-  assert((X86::R15WH + 1 == X86 ::YMM0) && (X86::YMM15 + 1 == X86::K0) &&
-         (X86::K6_K7 + 1 == X86::TMMCFG) && (X86::TMM7 + 1 == X86::R16) &&
-         (X86::R31WH + 1 == X86::NUM_TARGET_REGS) &&
-         "Register number may be incorrect");
+  static_assert((X86::R15WH + 1 == X86::YMM0) && (X86::YMM15 + 1 == X86::K0) &&
+                    (X86::K6_K7 + 1 == X86::TMMCFG) &&
+                    (X86::TMM7 + 1 == X86::R16) &&
+                    (X86::R31WH + 1 == X86::NUM_TARGET_REGS),
+                "Register number may be incorrect");
 
   const X86Subtarget &ST = MF.getSubtarget<X86Subtarget>();
   if (ST.hasEGPR())