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| author | Jakub Jelinek <jakub@redhat.com> | 2000-08-21 21:58:35 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2000-08-21 21:58:35 +0200 |
| commit | 6315f06806fddb632247ac30d5dba61a8ee08feb (patch) | |
| tree | b9dc59c9fb87b1b87df0dcdce1c1c21748b9f2a7 /gcc | |
| parent | 5804a754e51fe8a475bb701a57997ee0cdb51fc0 (diff) | |
| download | gcc-6315f06806fddb632247ac30d5dba61a8ee08feb.zip gcc-6315f06806fddb632247ac30d5dba61a8ee08feb.tar.gz gcc-6315f06806fddb632247ac30d5dba61a8ee08feb.tar.bz2 | |
unroll.c (loop_find_equiv_value): If ret is modified between insn and loop_start, ret might not be equivalent to reg.
* unroll.c (loop_find_equiv_value): If ret is modified between
insn and loop_start, ret might not be equivalent to reg.
* gcc.c-torture/execute/20000819-1.x: Remove.
From-SVN: r35857
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.c-torture/execute/20000819-1.x | 2 | ||||
| -rw-r--r-- | gcc/unroll.c | 5 |
4 files changed, 14 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index a800469..2003fb8 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2000-08-21 Jakub Jelinek <jakub@redhat.com> + + * unroll.c (loop_find_equiv_value): If ret is modified between + insn and loop_start, ret might not be equivalent to reg. + 2000-08-21 Joseph S. Myers <jsm28@cam.ac.uk> * c-common.c (init_dollar_format_checking, diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 1293a6c..f9b00f1 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,7 @@ +2000-08-21 Jakub Jelinek <jakub@redhat.com> + + * gcc.c-torture/execute/20000819-1.x: Remove. + 2000-08-21 Joseph S. Myers <jsm28@cam.ac.uk> * gcc.dg/c90-printf-3.c, gcc.dg/c90-scanf-2.c, diff --git a/gcc/testsuite/gcc.c-torture/execute/20000819-1.x b/gcc/testsuite/gcc.c-torture/execute/20000819-1.x deleted file mode 100644 index 2f397b9..0000000 --- a/gcc/testsuite/gcc.c-torture/execute/20000819-1.x +++ /dev/null @@ -1,2 +0,0 @@ -set torture_execute_xfail "*-*-*" -return 0 diff --git a/gcc/unroll.c b/gcc/unroll.c index 6976eba..c09f036 100644 --- a/gcc/unroll.c +++ b/gcc/unroll.c @@ -3540,6 +3540,11 @@ loop_find_equiv_value (loop, reg) ret = XEXP (note, 0); else ret = SET_SRC (set); + + /* We cannot do this if it changes between the + assignment and loop start though. */ + if (modified_between_p (ret, insn, loop_start)) + ret = reg; } break; } |