[libunwind] 532783f - [libunwind] Fix cfi_register for float registers.

[Daniel Kiss via cfe-commits]

Author: Daniel Kiss
Date: 2021-10-01T16:51:51+02:00
New Revision: 532783f9e1e65c7bd48b1592d2376e9dd47c5a73

URL: https://github.com/llvm/llvm-project/commit/532783f9e1e65c7bd48b1592d2376e9dd47c5a73
DIFF: https://github.com/llvm/llvm-project/commit/532783f9e1e65c7bd48b1592d2376e9dd47c5a73.diff

LOG: [libunwind] Fix cfi_register for float registers.

Fixes D110144.
registers.getFloatRegister is not const in ARM therefor can't be called here.

Reviewed By: mstorsjo, #libunwind

Differential Revision: https://reviews.llvm.org/D110731

Added: 
    

Modified: 
    libunwind/src/DwarfInstructions.hpp

Removed: 
    


################################################################################
diff  --git a/libunwind/src/DwarfInstructions.hpp b/libunwind/src/DwarfInstructions.hpp
index 53baf6a148f33..b58c51bb7a604 100644
--- a/libunwind/src/DwarfInstructions.hpp
+++ b/libunwind/src/DwarfInstructions.hpp
@@ -115,10 +115,12 @@ double DwarfInstructions<A, R>::getSavedFloatRegister(
     return addressSpace.getDouble(
         evaluateExpression((pint_t)savedReg.value, addressSpace,
                             registers, cfa));
-  case CFI_Parser<A>::kRegisterInRegister:
-    return registers.getFloatRegister((int)savedReg.value);
   case CFI_Parser<A>::kRegisterUndefined:
     return 0.0;
+  case CFI_Parser<A>::kRegisterInRegister:
+#ifndef _LIBUNWIND_TARGET_ARM
+    return registers.getFloatRegister((int)savedReg.value);
+#endif
   case CFI_Parser<A>::kRegisterIsExpression:
   case CFI_Parser<A>::kRegisterUnused:
   case CFI_Parser<A>::kRegisterOffsetFromCFA: