diff options
| -rw-r--r-- | lib/Target/X86/X86JITInfo.cpp | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/lib/Target/X86/X86JITInfo.cpp b/lib/Target/X86/X86JITInfo.cpp index 9536fe672c..dea34a5123 100644 --- a/lib/Target/X86/X86JITInfo.cpp +++ b/lib/Target/X86/X86JITInfo.cpp @@ -495,9 +495,11 @@ void X86JITInfo::emitFunctionStubAtAddr(const Function* F, void *Fn, void *Stub, // complains about casting a function pointer to a normal pointer. JCE.startGVStub(F, Stub, 5); JCE.emitByte(0xE9); -#if defined (X86_64_JIT) - assert(((((intptr_t)Fn-JCE.getCurrentPCValue()-5) << 32) >> 32) == - ((intptr_t)Fn-JCE.getCurrentPCValue()-5) +#if defined (X86_64_JIT) && !defined (NDEBUG) + // Yes, we need both of these casts, or some broken versions of GCC (4.2.4) + // get the signed-ness of the expression wrong. Go figure. + intptr_t Displacement = (intptr_t)Fn - (intptr_t)JCE.getCurrentPCValue() - 5; + assert(((Displacement << 32) >> 32) == Displacement && "PIC displacement does not fit in displacement field!"); #endif JCE.emitWordLE((intptr_t)Fn-JCE.getCurrentPCValue()-4); |