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| author | Geoffrey Keating <geoffk@redhat.com> | 2001-11-04 08:12:09 +0000 |
|---|---|---|
| committer | Geoffrey Keating <geoffk@gcc.gnu.org> | 2001-11-04 08:12:09 +0000 |
| commit | 27d80140ec45347e4042fb9e1c1e86a08ce45d52 (patch) | |
| tree | ffac8087938d67c9112369b7ccc976df3f3c1caf | |
| parent | 3eaaf577ce49b0572ef51a143d7540a0fed3e117 (diff) | |
| download | gcc-27d80140ec45347e4042fb9e1c1e86a08ce45d52.zip gcc-27d80140ec45347e4042fb9e1c1e86a08ce45d52.tar.gz gcc-27d80140ec45347e4042fb9e1c1e86a08ce45d52.tar.bz2 | |
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
| -rw-r--r-- | gcc/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/unroll.c | 11 |
2 files changed, 9 insertions, 6 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 3d875ee..4d1bacc 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -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. diff --git a/gcc/unroll.c b/gcc/unroll.c index 97e968e..c1d6238 100644 --- a/gcc/unroll.c +++ b/gcc/unroll.c @@ -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 ()); |