ARM/ARM64: Fix smashed CODE_REG in intrinsics with InvokeMathCFunctionInstrs.

runtime/vm/intrinsifier_mips.cc

Index: runtime/vm/intrinsifier_mips.cc
diff --git a/runtime/vm/intrinsifier_mips.cc b/runtime/vm/intrinsifier_mips.cc
index ea2183c4728e863dec25696449d663e0dd6d4012..e408c7daa1533c038bd0a4532ca6951fea42d9cb 100644
--- a/runtime/vm/intrinsifier_mips.cc
+++ b/runtime/vm/intrinsifier_mips.cc
@@ -33,6 +33,12 @@ intptr_t Intrinsifier::ParameterSlotFromSp() { return -1; }
 
 
 void Intrinsifier::IntrinsicCallPrologue(Assembler* assembler) {
+  COMPILE_ASSERT((1 << CODE_REG) & kAbiPreservedCpuRegs);
+  COMPILE_ASSERT((1 << ARGS_DESC_REG) & kAbiPreservedCpuRegs);
+  COMPILE_ASSERT((1 << CALLEE_SAVED_TEMP) & kAbiPreservedCpuRegs);
+  COMPILE_ASSERT(CALLEE_SAVED_TEMP != CODE_REG);
+  COMPILE_ASSERT(CALLEE_SAVED_TEMP != ARGS_DESC_REG);
+
   assembler->Comment("IntrinsicCallPrologue");
   assembler->mov(CALLEE_SAVED_TEMP, RA);

[Vyacheslav Egorov (Google), 2016/05/25 11:15:31]

RA -> LRREG

[rmacnak, 2016/05/25 16:58:51]

Done.

 }