diff options
Diffstat (limited to 'gcc/defaults.h')
| -rw-r--r-- | gcc/defaults.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/gcc/defaults.h b/gcc/defaults.h index 9ec2af1a5ab..45fb088785f 100644 --- a/gcc/defaults.h +++ b/gcc/defaults.h @@ -325,5 +325,16 @@ do { \ #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) DW_EH_PE_absptr #endif +/* By default, the C++ compiler will use the lowest bit of the pointer + to function to indicate a pointer-to-member-function points to a + virtual member function. However, if FUNCTION_BOUNDARY indicates + function addresses aren't always even, the lowest bit of the delta + field will be used. */ +#ifndef TARGET_PTRMEMFUNC_VBIT_LOCATION +#define TARGET_PTRMEMFUNC_VBIT_LOCATION \ + (FUNCTION_BOUNDARY >= 2 * BITS_PER_UNIT \ + ? ptrmemfunc_vbit_in_pfn : ptrmemfunc_vbit_in_delta) +#endif + #endif /* GCC_DEFAULTS_H */ |