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re PR bootstrap/10983 ([SPARC64] ICE in verify_wide_reg, at flow.c:551, while compiling libjava)

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PR bootstrap/10983
	* combine.c (make_extraction): Use gen_lowpart_for_combine
	when extracting from a REG and not in the destination of a SET.

Co-Authored-By: Eric Botcazou <ebotcazou@libertysurf.fr>

From-SVN: r67916
This commit is contained in:
James E Wilson 2003-06-13 22:13:07 +00:00 committed by Eric Botcazou
parent 7e7de68b89
commit 54c2fc721c
2 changed files with 30 additions and 18 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2003-06-13 Jim Wilson <wilson@tuliptree.org>
Eric Botcazou <ebotcazou@libertysurf.fr>
PR bootstrap/10983
* combine.c (make_extraction): Use gen_lowpart_for_combine
when extracting from a REG and not in the destination of a SET.
2003-06-13 Doug Evans <dje@sebabeach.org>
* tsystem.h (abort): Declare in inhibit_libc case to remove build

41
gcc/combine.c
View File

@ -6139,30 +6139,35 @@ make_extraction (enum machine_mode mode, rtx inner, HOST_WIDE_INT pos,
}
else if (GET_CODE (inner) == REG)
{
/* We can't call gen_lowpart_for_combine here since we always want
a SUBREG and it would sometimes return a new hard register. */
if (tmode != inner_mode)
{
HOST_WIDE_INT final_word = pos / BITS_PER_WORD;
if (in_dest)
{
/* We can't call gen_lowpart_for_combine here since we always want
a SUBREG and it would sometimes return a new hard register. */
HOST_WIDE_INT final_word = pos / BITS_PER_WORD;
if (WORDS_BIG_ENDIAN
&& GET_MODE_SIZE (inner_mode) > UNITS_PER_WORD)
final_word = ((GET_MODE_SIZE (inner_mode)
- GET_MODE_SIZE (tmode))
/ UNITS_PER_WORD) - final_word;
if (WORDS_BIG_ENDIAN
&& GET_MODE_SIZE (inner_mode) > UNITS_PER_WORD)
final_word = ((GET_MODE_SIZE (inner_mode)
- GET_MODE_SIZE (tmode))
/ UNITS_PER_WORD) - final_word;
final_word *= UNITS_PER_WORD;
if (BYTES_BIG_ENDIAN &&
GET_MODE_SIZE (inner_mode) > GET_MODE_SIZE (tmode))
final_word += (GET_MODE_SIZE (inner_mode)
- GET_MODE_SIZE (tmode)) % UNITS_PER_WORD;
final_word *= UNITS_PER_WORD;
if (BYTES_BIG_ENDIAN &&
GET_MODE_SIZE (inner_mode) > GET_MODE_SIZE (tmode))
final_word += (GET_MODE_SIZE (inner_mode)
- GET_MODE_SIZE (tmode)) % UNITS_PER_WORD;
/* Avoid creating invalid subregs, for example when
simplifying (x>>32)&255. */
if (final_word >= GET_MODE_SIZE (inner_mode))
return NULL_RTX;
/* Avoid creating invalid subregs, for example when
simplifying (x>>32)&255. */
if (final_word >= GET_MODE_SIZE (inner_mode))
return NULL_RTX;
new = gen_rtx_SUBREG (tmode, inner, final_word);
new = gen_rtx_SUBREG (tmode, inner, final_word);
}
else
new = gen_lowpart_for_combine (tmode, inner);
}
else
new = inner;