| Index: src/assembler.cc | 
| diff --git a/src/assembler.cc b/src/assembler.cc | 
| index 3cb4929996e6499b6f1c4e284122f13d2f43a413..efb3941f79879658b6affe94dc666549926b16a2 100644 | 
| --- a/src/assembler.cc | 
| +++ b/src/assembler.cc | 
| @@ -66,6 +66,8 @@ | 
| #include "arm/assembler-arm-inl.h" | 
| #elif V8_TARGET_ARCH_MIPS | 
| #include "mips/assembler-mips-inl.h" | 
| +#elif V8_TARGET_ARCH_X87 | 
| +#include "x87/assembler-x87-inl.h" | 
| #else | 
| #error "Unknown architecture." | 
| #endif | 
| @@ -82,6 +84,8 @@ | 
| #include "arm/regexp-macro-assembler-arm.h" | 
| #elif V8_TARGET_ARCH_MIPS | 
| #include "mips/regexp-macro-assembler-mips.h" | 
| +#elif V8_TARGET_ARCH_X87 | 
| +#include "x87/regexp-macro-assembler-x87.h" | 
| #else  // Unknown architecture. | 
| #error "Unknown architecture." | 
| #endif  // Target architecture. | 
| @@ -1345,6 +1349,8 @@ ExternalReference ExternalReference::re_check_stack_guard_state( | 
| function = FUNCTION_ADDR(RegExpMacroAssemblerARM::CheckStackGuardState); | 
| #elif V8_TARGET_ARCH_MIPS | 
| function = FUNCTION_ADDR(RegExpMacroAssemblerMIPS::CheckStackGuardState); | 
| +#elif V8_TARGET_ARCH_X87 | 
| +  function = FUNCTION_ADDR(RegExpMacroAssemblerX87::CheckStackGuardState); | 
| #else | 
| UNREACHABLE(); | 
| #endif | 
|  |