[libunwind] r339849 - [libunwind][mips] Guard accumulator registers

[Stefan Maksimovic via cfe-commits]

Author: smaksimovic
Date: Thu Aug 16 01:49:50 2018
New Revision: 339849

URL: http://llvm.org/viewvc/llvm-project?rev=339849&view=rev
Log:
[libunwind][mips] Guard accumulator registers

Mipsr6 does not possess HI and LO accumulator registers, adjust validRegister functions to respect that.

Differential Revision: https://reviews.llvm.org/D50244

Modified:
    libunwind/trunk/src/Registers.hpp

Modified: libunwind/trunk/src/Registers.hpp
URL: http://llvm.org/viewvc/llvm-project/libunwind/trunk/src/Registers.hpp?rev=339849&r1=339848&r2=339849&view=diff
==============================================================================
--- libunwind/trunk/src/Registers.hpp (original)
+++ libunwind/trunk/src/Registers.hpp Thu Aug 16 01:49:50 2018
@@ -2759,10 +2759,12 @@ inline bool Registers_mips_o32::validReg
     return false;
   if (regNum <= UNW_MIPS_R31)
     return true;
+#if __mips_isa_rev != 6
   if (regNum == UNW_MIPS_HI)
     return true;
   if (regNum == UNW_MIPS_LO)
     return true;
+#endif
 #if defined(__mips_hard_float) && __mips_fpr == 32
   if (regNum >= UNW_MIPS_F0 && regNum <= UNW_MIPS_F31)
     return true;
@@ -3073,10 +3075,12 @@ inline bool Registers_mips_newabi::valid
     return false;
   if (regNum <= UNW_MIPS_R31)
     return true;
+#if __mips_isa_rev != 6
   if (regNum == UNW_MIPS_HI)
     return true;
   if (regNum == UNW_MIPS_LO)
     return true;
+#endif
   // FIXME: Hard float, DSP accumulator registers, MSA registers
   return false;
 }