OpenE2K
/
gcc
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

unroll.c (calculate_giv_inc): Use find_last_value rather than just hoping the last instruction is the right SET. 

* unroll.c (calculate_giv_inc): Use find_last_value rather
	than just hoping the last instruction is the right SET.
	[Fixes 990604-1.c on stormy16.]

From-SVN: r46769
This commit is contained in:
Geoffrey Keating 2001-11-04 08:12:09 +00:00 committed by Geoffrey Keating
parent 3eaaf577ce
commit 27d80140ec
2 changed files with 9 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
gcc/ChangeLog
View File

@ -1,5 +1,9 @@
2001-11-03 Geoffrey Keating <geoffk@redhat.com>
* unroll.c (calculate_giv_inc): Use find_last_value rather
than just hoping the last instruction is the right SET.
[Fixes 990604-1.c on stormy16.]
* config/stormy16/stormy16.h (LIB_SPEC): Don't supply any libgloss
library at all if -T is used.

11
gcc/unroll.c
View File

@ -1556,7 +1556,7 @@ calculate_giv_inc (pattern, src_insn, regno)
/* SR sometimes computes the new giv value in a temp, then copies it
to the new_reg. */
src_insn = PREV_INSN (src_insn);
pattern = PATTERN (src_insn);
pattern = single_set (src_insn);
if (GET_CODE (SET_SRC (pattern)) != PLUS)
abort ();
@ -1571,8 +1571,7 @@ calculate_giv_inc (pattern, src_insn, regno)
{
/* SR sometimes puts the constant in a register, especially if it is
too big to be an add immed operand. */
src_insn = PREV_INSN (src_insn);
increment = SET_SRC (PATTERN (src_insn));
increment = find_last_value (increment, &src_insn, NULL_RTX, 0);
/* SR may have used LO_SUM to compute the constant if it is too large
for a load immed operand. In this case, the constant is in operand
@ -1598,8 +1597,8 @@ calculate_giv_inc (pattern, src_insn, regno)
rtx second_part = XEXP (increment, 1);
enum rtx_code code = GET_CODE (increment);
src_insn = PREV_INSN (src_insn);
increment = SET_SRC (PATTERN (src_insn));
increment = find_last_value (XEXP (increment, 0),
&src_insn, NULL_RTX, 0);
/* Don't need the last insn anymore. */
delete_related_insns (get_last_insn ());
@ -1642,7 +1641,7 @@ calculate_giv_inc (pattern, src_insn, regno)
tries++;
src_insn = PREV_INSN (src_insn);
pattern = PATTERN (src_insn);
pattern = single_set (src_insn);
delete_related_insns (get_last_insn ());