diff options
Diffstat (limited to 'gcc/rtl.c')
| -rw-r--r-- | gcc/rtl.c | 21 |
1 files changed, 16 insertions, 5 deletions
diff --git a/gcc/rtl.c b/gcc/rtl.c index 08b34e5f1cd..7d3dac7d567 100644 --- a/gcc/rtl.c +++ b/gcc/rtl.c @@ -201,6 +201,21 @@ rtx_alloc_stat (RTX_CODE code MEM_STAT_DECL) } +/* Return true if ORIG is a sharable CONST. */ + +bool +shared_const_p (rtx orig) +{ + gcc_assert (GET_CODE (orig) == CONST); + + /* CONST can be shared if it contains a SYMBOL_REF. If it contains + a LABEL_REF, it isn't sharable. */ + return (GET_CODE (XEXP (orig, 0)) == PLUS + && GET_CODE (XEXP (XEXP (orig, 0), 0)) == SYMBOL_REF + && GET_CODE (XEXP (XEXP (orig, 0), 1)) == CONST_INT); +} + + /* Create a new copy of an rtx. Recursively copies the operands of the rtx, except for those few rtx codes that are sharable. */ @@ -234,11 +249,7 @@ copy_rtx (rtx orig) break; case CONST: - /* CONST can be shared if it contains a SYMBOL_REF. If it contains - a LABEL_REF, it isn't sharable. */ - if (GET_CODE (XEXP (orig, 0)) == PLUS - && GET_CODE (XEXP (XEXP (orig, 0), 0)) == SYMBOL_REF - && GET_CODE (XEXP (XEXP (orig, 0), 1)) == CONST_INT) + if (shared_const_p (orig)) return orig; break; |