diff options
Diffstat (limited to 'gcc/dwarf2out.c')
| -rw-r--r-- | gcc/dwarf2out.c | 29 |
1 files changed, 27 insertions, 2 deletions
diff --git a/gcc/dwarf2out.c b/gcc/dwarf2out.c index c1df45af12a..410682b9b1a 100644 --- a/gcc/dwarf2out.c +++ b/gcc/dwarf2out.c @@ -1534,7 +1534,7 @@ static dw_cfa_location cfa_temp; static void dwarf2out_frame_debug_expr (rtx expr, const char *label) { - rtx src, dest; + rtx src, dest, span; HOST_WIDE_INT offset; /* If RTX_FRAME_RELATED_P is set on a PARALLEL, process each member of @@ -1884,7 +1884,32 @@ dwarf2out_frame_debug_expr (rtx expr, const char *label) } def_cfa_1 (label, &cfa); - queue_reg_save (label, src, NULL_RTX, offset); + { + span = targetm.dwarf_register_span (src); + + if (!span) + queue_reg_save (label, src, NULL_RTX, offset); + else + { + /* We have a PARALLEL describing where the contents of SRC + live. Queue register saves for each piece of the + PARALLEL. */ + int par_index; + int limit; + HOST_WIDE_INT span_offset = offset; + + gcc_assert (GET_CODE (span) == PARALLEL); + + limit = XVECLEN (span, 0); + for (par_index = 0; par_index < limit; par_index++) + { + rtx elem = XVECEXP (span, 0, par_index); + + queue_reg_save (label, elem, NULL_RTX, span_offset); + span_offset += GET_MODE_SIZE (GET_MODE (elem)); + } + } + } break; default: |