diff options
| author | Richard Sandiford <rsandifo@redhat.com> | 2004-11-04 14:08:16 +0000 |
|---|---|---|
| committer | Richard Sandiford <rsandifo@gcc.gnu.org> | 2004-11-04 14:08:16 +0000 |
| commit | 4e5813dd13475bfe2e16b30707450ea51477a467 (patch) | |
| tree | 2554d10152e693ead3b4c6250f3de30e1bc5c022 /gcc | |
| parent | d46aed512ee2db1c96652a08718660dedcb2a68f (diff) | |
| download | gcc-4e5813dd13475bfe2e16b30707450ea51477a467.zip gcc-4e5813dd13475bfe2e16b30707450ea51477a467.tar.gz gcc-4e5813dd13475bfe2e16b30707450ea51477a467.tar.bz2 | |
re PR rtl-optimization/15342 ([arm-linux] internal compiler error: in verify_local_live_at_start)
PR target/15342
* regrename.c (scan_rtx): Treat the destinations of SETs and CLOBBERs
as OP_INOUT if the instruction is predicated.
From-SVN: r90063
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/regrename.c | 6 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/20041104-1.c | 18 |
4 files changed, 33 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 033e47b..0320b0c 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2004-11-04 Richard Sandiford <rsandifo@redhat.com> + + PR target/15342 + * regrename.c (scan_rtx): Treat the destinations of SETs and CLOBBERs + as OP_INOUT if the instruction is predicated. + 2004-11-04 Kazu Hirata <kazu@cs.umass.edu> * bitmap.h: Fix a comment typo. Follow spelling conventions. diff --git a/gcc/regrename.c b/gcc/regrename.c index dc2bb01..3856c2c 100644 --- a/gcc/regrename.c +++ b/gcc/regrename.c @@ -667,7 +667,8 @@ scan_rtx (rtx insn, rtx *loc, enum reg_class cl, case SET: scan_rtx (insn, &SET_SRC (x), cl, action, OP_IN, 0); - scan_rtx (insn, &SET_DEST (x), cl, action, OP_OUT, 0); + scan_rtx (insn, &SET_DEST (x), cl, action, + GET_CODE (PATTERN (insn)) == COND_EXEC ? OP_INOUT : OP_OUT, 0); return; case STRICT_LOW_PART: @@ -692,7 +693,8 @@ scan_rtx (rtx insn, rtx *loc, enum reg_class cl, gcc_unreachable (); case CLOBBER: - scan_rtx (insn, &SET_DEST (x), cl, action, OP_OUT, 1); + scan_rtx (insn, &SET_DEST (x), cl, action, + GET_CODE (PATTERN (insn)) == COND_EXEC ? OP_INOUT : OP_OUT, 0); return; case EXPR_LIST: diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 770171a..2e1d71d 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2004-11-04 Richard Sandiford <rsandifo@redhat.com> + + PR target/15342 + * gcc.dg/20041104-1.c: New test. + 2004-11-04 Giovanni Bajo <giovannibajo@gcc.gnu.org> * g++.dg/template/nontype7.C: New test. diff --git a/gcc/testsuite/gcc.dg/20041104-1.c b/gcc/testsuite/gcc.dg/20041104-1.c new file mode 100644 index 0000000..b4d359d --- /dev/null +++ b/gcc/testsuite/gcc.dg/20041104-1.c @@ -0,0 +1,18 @@ +/* This testcase exposed the same bug as PR 15342. */ +/* { dg-options "-O2 -frename-registers -fno-schedule-insns" } */ + +void *memcpy (void *, const void *, __SIZE_TYPE__); + +void f (int n, int (*x)[4]) +{ + while (n--) + { + int f = x[0][0]; + if (f <= 0) + memcpy (&x[1], &x[0], sizeof (x[0])); + else + memcpy (&x[f], &x[0], sizeof (x[0])); + f = x[0][2]; + x[0][1] = f; + } +} |