RuntimeLibcalls: Move __stack_chk_fail config to tablegen

Author: arsenm

llvm/include/llvm/IR/RuntimeLibcalls.td

@@ -18,6 +18,7 @@ class DuplicateLibcallImplWithPrefix<RuntimeLibcallImpl Impl, string prefix>
 /// Libcall Predicates
 def isOSDarwin : RuntimeLibcallPredicate<"TT.isOSDarwin()">;
 def isOSOpenBSD : RuntimeLibcallPredicate<"TT.isOSOpenBSD()">;
+def isNotOSOpenBSD : RuntimeLibcallPredicate<"!TT.isOSOpenBSD()">;
 def isOSWindows : RuntimeLibcallPredicate<"TT.isOSWindows()">;
 def isNotOSWindows : RuntimeLibcallPredicate<"!TT.isOSWindows()">;
 def isNotOSMSVCRT : RuntimeLibcallPredicate<"!TT.isOSMSVCRT()">;
@@ -698,9 +699,6 @@ foreach lc = LibCalls__atomic in {
   def __#!tolower(!cast<string>(lc)) : RuntimeLibcallImpl<lc>;
 }
 
-// Stack Protector Fail
-def __stack_chk_fail : RuntimeLibcallImpl<STACKPROTECTOR_CHECK_FAIL>;
-
 // Deoptimization
 def __llvm_deoptimize : RuntimeLibcallImpl<DEOPTIMIZE>;
 
@@ -945,6 +943,9 @@ def exp10l_f80 : RuntimeLibcallImpl<EXP10_F80, "exp10l">;
 def exp10l_f128 : RuntimeLibcallImpl<EXP10_F128, "exp10l">;
 def exp10l_ppcf128 : RuntimeLibcallImpl<EXP10_PPCF128, "exp10l">;
 
+// Stack Protector Fail
+def __stack_chk_fail : RuntimeLibcallImpl<STACKPROTECTOR_CHECK_FAIL>;
+
 //--------------------------------------------------------------------
 // compiler-rt/libgcc but 64-bit only, not available by default
 //--------------------------------------------------------------------
@@ -1128,6 +1129,7 @@ defvar LibmHasLdexpF80 = LibcallImpls<(add ldexp_f80), isNotOSWindowsOrIsCygwinM
 defvar LibmHasFrexpF128 = LibcallImpls<(add frexp_f128), isNotOSWindowsOrIsCygwinMinGW>;
 defvar LibmHasLdexpF128 = LibcallImpls<(add ldexp_f128), isNotOSWindowsOrIsCygwinMinGW>;
 
+defvar has__stack_chk_fail = LibcallImpls<(add __stack_chk_fail), isNotOSOpenBSD>;
 
 //===----------------------------------------------------------------------===//
 // Objective-C Runtime Libcalls
@@ -1205,7 +1207,8 @@ def AArch64SystemLibrary : SystemRuntimeLibrary<
        LibcallImpls<(add bzero), isOSDarwin>,
        DarwinExp10, DarwinSinCosStret,
        LibmHasSinCosF32, LibmHasSinCosF64, LibmHasSinCosF128,
-       LibmHasExp10F32, LibmHasExp10F64, LibmHasExp10F128)
+       LibmHasExp10F32, LibmHasExp10F64, LibmHasExp10F128,
+       has__stack_chk_fail)
 >;
 
 // Prepend a # to every name
@@ -1481,7 +1484,8 @@ def ARMSystemLibrary
            // Use divmod compiler-rt calls for iOS 5.0 and later.
            LibcallImpls<(add __divmodsi4, __udivmodsi4),
                         RuntimeLibcallPredicate<[{TT.isOSBinFormatMachO() &&
-                                                  (!TT.isiOS() || !TT.isOSVersionLT(5, 0))}]>>)> {
+                                                  (!TT.isiOS() || !TT.isOSVersionLT(5, 0))}]>>,
+           has__stack_chk_fail)> {
   let DefaultLibcallCallingConv = LibcallCallingConv<[{
      (!TT.isOSDarwin() && !TT.isiOS() && !TT.isWatchOS() && !TT.isDriverKit()) ?
         (FloatABI == FloatABI::Hard ? CallingConv::ARM_AAPCS_VFP
@@ -1976,7 +1980,8 @@ def PPCSystemLibrary
            LibmHasSinCosF32, LibmHasSinCosF64, LibmHasSinCosF128,
            LibmHasSinCosPPCF128,
            AvailableIf<memcpy, isNotAIX>,
-           LibcallImpls<(add Int128RTLibcalls), isPPC64>)>;
+           LibcallImpls<(add Int128RTLibcalls), isPPC64>,
+           has__stack_chk_fail)>;
 
 //===----------------------------------------------------------------------===//
 // RISCV Runtime Libcalls
@@ -1990,7 +1995,8 @@ def RISCVSystemLibrary
       (add DefaultRuntimeLibcallImpls,
            exp10f, exp10, exp10l_f128,
            __riscv_flush_icache,
-           LibcallImpls<(add Int128RTLibcalls), isRISCV64>)>;
+           LibcallImpls<(add Int128RTLibcalls), isRISCV64>,
+           has__stack_chk_fail)>;
 
 //===----------------------------------------------------------------------===//
 // SPARC Runtime Libcalls
@@ -2057,7 +2063,8 @@ def SPARCSystemLibrary
             sparc_umul, sparc_div, sparc_udiv, sparc_rem, sparc_urem,
        LibcallImpls<(add _Q_qtoll, _Q_qtoull, _Q_lltoq, _Q_ulltoq), isSPARC32>,
        LibcallImpls<(add SPARC64_MulDivCalls, Int128RTLibcalls), isSPARC64>,
-       LibmHasSinCosF32, LibmHasSinCosF64, LibmHasSinCosF128)
+       LibmHasSinCosF32, LibmHasSinCosF64, LibmHasSinCosF128,
+       has__stack_chk_fail)
 >;
 
 //===----------------------------------------------------------------------===//
@@ -2106,7 +2113,8 @@ defvar X86CommonLibcalls =
        LibcallImpls<(add MostPowI), isNotOSMSVCRT>,
        // FIXME: MSVCRT doesn't have powi. The f128 case is added as a
        // hack for one test relying on it.
-       __powitf2_f128
+       __powitf2_f128,
+       has__stack_chk_fail
 );
 
 defvar Windows32DivRemMulCalls =
@@ -2251,7 +2259,8 @@ def WasmSystemLibrary
       (add DefaultRuntimeLibcallImpls, Int128RTLibcalls,
            CompilerRTOnlyInt64Libcalls, CompilerRTOnlyInt128Libcalls,
            exp10f, exp10,
-           emscripten_return_address)>;
+           emscripten_return_address,
+           __stack_chk_fail)>;
 
 //===----------------------------------------------------------------------===//
 // Legacy Default Runtime Libcalls
@@ -2274,5 +2283,6 @@ def LegacyDefaultSystemLibrary
          LibmHasSinCosF32, LibmHasSinCosF64, LibmHasSinCosF128,
          exp10f, exp10, exp10l_f128,
          __powisf2, __powidf2, __powitf2_f128,
-         LibcallImpls<(add Int128RTLibcalls), isArch64Bit>
+         LibcallImpls<(add Int128RTLibcalls), isArch64Bit>,
+         has__stack_chk_fail
 )>;

llvm/lib/IR/RuntimeLibcalls.cpp

@@ -77,10 +77,6 @@ void RuntimeLibcallsInfo::initLibcalls(const Triple &TT,
       setLibcallImpl(RTLIB::UNWIND_RESUME, RTLIB::_Unwind_SjLj_Resume);
   }
 
-  if (TT.isOSOpenBSD()) {
-    setLibcallImpl(RTLIB::STACKPROTECTOR_CHECK_FAIL, RTLIB::Unsupported);
-  }
-
   if (TT.isARM() || TT.isThumb()) {
     setARMLibcallNames(*this, TT, FloatABI, EABIVersion);
     return;