Add clobber list to arm inline asm.

src/platform-linux.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 169 matching lines @@
 
   return false;
 }
 
 
 // Simple helper function to detect whether the C code is compiled with
 // option -mfloat-abi=hard. The register d0 is loaded with 1.0 and the register
 // pair r0, r1 is loaded with 0.0. If -mfloat-abi=hard is pased to GCC then
 // calling this will return 1.0 and otherwise 0.0.
 static void ArmUsingHardFloatHelper() {
-  asm("mov r0, #0");
+  asm("mov r0, #0":::"r0");
 #if defined(__VFP_FP__) && !defined(__SOFTFP__)
   // Load 0x3ff00000 into r1 using instructions available in both ARM
   // and Thumb mode.
-  asm("mov r1, #3");
-  asm("mov r2, #255");
-  asm("lsl r1, r1, #8");
-  asm("orr r1, r1, r2");
-  asm("lsl r1, r1, #20");
+  asm("mov r1, #3":::"r1");
+  asm("mov r2, #255":::"r2");
+  asm("lsl r1, r1, #8":::"r1");
+  asm("orr r1, r1, r2":::"r1");
+  asm("lsl r1, r1, #20":::"r1");
   // For vmov d0, r0, r1 use ARM mode.
 #ifdef __thumb__
   asm volatile(
     "@   Enter ARM Mode  \n\t"
     "    adr r3, 1f      \n\t"
     "    bx  r3          \n\t"
     "    .ALIGN 4        \n\t"
     "    .ARM            \n"
     "1:  vmov d0, r0, r1 \n\t"
     "@   Enter THUMB Mode\n\t"
     "    adr r3, 2f+1    \n\t"
     "    bx  r3          \n\t"
     "    .THUMB          \n"
-    "2:                  \n\t");
+    "2:                  \n\t":::"r3");
 #else
   asm("vmov d0, r0, r1");
 #endif  // __thumb__
 #endif  // defined(__VFP_FP__) && !defined(__SOFTFP__)
-  asm("mov r1, #0");
+  asm("mov r1, #0":::"r1");
 }
 
 
 bool OS::ArmUsingHardFloat() {
   // Cast helper function from returning void to returning double.
   typedef double (*F)();
   F f = FUNCTION_CAST<F>(FUNCTION_ADDR(ArmUsingHardFloatHelper));
   return f() == 1.0;
 }
 #endif  // def __arm__
@@ skipping 1018 matching lines @@
 
 
 void Sampler::Stop() {
   ASSERT(IsActive());
   SignalSender::RemoveActiveSampler(this);
   SetActive(false);
 }
 
 
 } }  // namespace v8::internal