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| author | Jan Hubicka <jh@suse.cz> | 2001-01-02 20:29:12 +0100 |
|---|---|---|
| committer | Jan Hubicka <hubicka@gcc.gnu.org> | 2001-01-02 19:29:12 +0000 |
| commit | e2134eead7517617e1824633b26560e9b5d09672 (patch) | |
| tree | c21b4e2869275f5bf36b5068d330ceb1647f34ef | |
| parent | 2b589241d86c1f2e68d5f2dbceb60f19050bd199 (diff) | |
| download | gcc-e2134eead7517617e1824633b26560e9b5d09672.zip gcc-e2134eead7517617e1824633b26560e9b5d09672.tar.gz gcc-e2134eead7517617e1824633b26560e9b5d09672.tar.bz2 | |
dwarf2out.c (stack_adjust_offset): Handle PRE_MODIFY.
* dwarf2out.c (stack_adjust_offset): Handle PRE_MODIFY.
(dwarf2out_frame_debug_expr): Likewise.
(mem_loc_descriptor): Handle PRE and POST_MODIFY.
From-SVN: r38634
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/dwarf2out.c | 37 |
2 files changed, 41 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index f64a007..4537c1f 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +Tue Jan 2 20:27:07 MET 2001 Jan Hubicka <jh@suse.cz> + + * dwarf2out.c (stack_adjust_offset): Handle PRE_MODIFY. + (dwarf2out_frame_debug_expr): Likewise. + (mem_loc_descriptor): Handle PRE and POST_MODIFY. + Tue Jan 2 20:21:31 MET 2001 Jan Hubicka <jh@suse.cz> * i386.c (ix86_split_to_parts): Return number of part required; diff --git a/gcc/dwarf2out.c b/gcc/dwarf2out.c index ec47c36..dabf0d1 100644 --- a/gcc/dwarf2out.c +++ b/gcc/dwarf2out.c @@ -1130,11 +1130,21 @@ stack_adjust_offset (pattern) src = XEXP (dest, 0); code = GET_CODE (src); - if (! (code == PRE_DEC || code == PRE_INC) + if (! (code == PRE_DEC || code == PRE_INC + || code == PRE_MODIFY) || XEXP (src, 0) != stack_pointer_rtx) return 0; - offset = GET_MODE_SIZE (GET_MODE (dest)); + if (code == PRE_MODIFY) + { + rtx val = XEXP (XEXP (src, 1), 1); + /* We handle only adjustments by constant amount. */ + if (GET_CODE (XEXP (src, 1)) != PLUS || + GET_CODE (val) != CONST_INT) + abort(); + offset = -INTVAL (val); + } + else offset = GET_MODE_SIZE (GET_MODE (dest)); } else return 0; @@ -1418,6 +1428,21 @@ dwarf2out_frame_debug_expr (expr, label) switch (GET_CODE (XEXP (dest, 0))) { /* With a push. */ + case PRE_MODIFY: + /* We can't handle variable size modifications. */ + if (GET_CODE (XEXP (XEXP (XEXP (dest, 0), 1), 1)) != CONST_INT) + abort(); + offset = -INTVAL (XEXP (XEXP (XEXP (dest, 0), 1), 1)); + + if (REGNO (XEXP (XEXP (dest, 0), 0)) != STACK_POINTER_REGNUM + || cfa_store.reg != STACK_POINTER_REGNUM) + abort (); + cfa_store.offset += offset; + if (cfa.reg == STACK_POINTER_REGNUM) + cfa.offset = cfa_store.offset; + + offset = -cfa_store.offset; + break; case PRE_INC: case PRE_DEC: offset = GET_MODE_SIZE (GET_MODE (dest)); @@ -7590,6 +7615,7 @@ mem_loc_descriptor (rtl, mode) { case POST_INC: case POST_DEC: + case POST_MODIFY: /* POST_INC and POST_DEC can be handled just like a SUBREG. So we just fall into the SUBREG code. */ @@ -7648,6 +7674,12 @@ mem_loc_descriptor (rtl, mode) mem_loc_result->dw_loc_oprnd1.v.val_addr = save_rtx (rtl); break; + case PRE_MODIFY: + /* Extract the PLUS expression nested inside and fall into + PLUS code bellow. */ + rtl = XEXP (rtl, 1); + goto plus; + case PRE_INC: case PRE_DEC: /* Turn these into a PLUS expression and fall into the PLUS code @@ -7660,6 +7692,7 @@ mem_loc_descriptor (rtl, mode) /* Fall through. */ case PLUS: + plus: if (is_based_loc (rtl)) mem_loc_result = based_loc_descr (reg_number (XEXP (rtl, 0)), INTVAL (XEXP (rtl, 1))); |