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| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/var-tracking.c | 11 |
2 files changed, 16 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 33114ed..307a315 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2012-06-26 Alexandre Oliva <aoliva@redhat.com> + + * var-tracking.c (vt_add_function_parameter): Use a preserved + VALUE for the MEM address of an incoming parameter. + 2012-06-26 Sterling Augustine <saugustine@google.com> * dwarf2out.c (output_pubnames): Add check for DW_TAG_enumerator. diff --git a/gcc/var-tracking.c b/gcc/var-tracking.c index 419269f..be638d7 100644 --- a/gcc/var-tracking.c +++ b/gcc/var-tracking.c @@ -9454,6 +9454,17 @@ vt_add_function_parameter (tree parm) VAR_INIT_STATUS_INITIALIZED, NULL, INSERT); dv = dv_from_value (val->val_rtx); } + + if (MEM_P (incoming)) + { + val = cselib_lookup_from_insn (XEXP (incoming, 0), mode, true, + VOIDmode, get_insns ()); + if (val) + { + preserve_value (val); + incoming = replace_equiv_address_nv (incoming, val->val_rtx); + } + } } if (REG_P (incoming)) |