diff options
| author | Kaz Kojima <kkojima@gcc.gnu.org> | 2008-01-21 00:04:23 +0000 |
|---|---|---|
| committer | Kaz Kojima <kkojima@gcc.gnu.org> | 2008-01-21 00:04:23 +0000 |
| commit | 539c54bafbbc73ce79ee1681598b6451e748aad4 (patch) | |
| tree | 64303f27f89458803f70c53d0d7bf928ee7252a5 /gcc | |
| parent | f5d67ede42caa6e1442a4776a4929a8a96907caf (diff) | |
| download | gcc-539c54bafbbc73ce79ee1681598b6451e748aad4.zip gcc-539c54bafbbc73ce79ee1681598b6451e748aad4.tar.gz gcc-539c54bafbbc73ce79ee1681598b6451e748aad4.tar.bz2 | |
re PR rtl-optimization/34808 (ICE in prescan_insns_for_dce)
PR rtl-optimization/34808
* emit-rtl.c (try_split): Handle REG_RETVAL notes.
* gcc.c-torture/compile/pr34808.c: New test.
From-SVN: r131680
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/emit-rtl.c | 14 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.c-torture/compile/pr34808.c | 29 |
4 files changed, 52 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 4a327d4..cc25fb7 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2008-01-20 Kaz Kojima <kkojima@gcc.gnu.org> + + PR rtl-optimization/34808 + * emit-rtl.c (try_split): Handle REG_RETVAL notes. + 2008-01-20 Richard Sandiford <rsandifo@nildram.co.uk> * global.c (find_reg): Only compute EH_RETURN_DATA_REGNO once per diff --git a/gcc/emit-rtl.c b/gcc/emit-rtl.c index bef4d58..1a9239a 100644 --- a/gcc/emit-rtl.c +++ b/gcc/emit-rtl.c @@ -3136,7 +3136,7 @@ try_split (rtx pat, rtx trial, int last) rtx before = PREV_INSN (trial); rtx after = NEXT_INSN (trial); int has_barrier = 0; - rtx tem, note_retval; + rtx tem, note_retval, note_libcall; rtx note, seq; int probability; rtx insn_last, insn; @@ -3284,6 +3284,18 @@ try_split (rtx pat, rtx trial, int last) XEXP (note_retval, 0) = insn_last; break; + case REG_RETVAL: + /* Relink the insns with REG_LIBCALL note and with REG_RETVAL note + after split. */ + REG_NOTES (insn_last) + = gen_rtx_INSN_LIST (REG_RETVAL, + XEXP (note, 0), + REG_NOTES (insn_last)); + + note_libcall = find_reg_note (XEXP (note, 0), REG_LIBCALL, NULL); + XEXP (note_libcall, 0) = insn_last; + break; + default: break; } diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 61be064..d0e0656 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2008-01-20 Kaz Kojima <kkojima@gcc.gnu.org> + + PR rtl-optimization/34808 + * gcc.c-torture/compile/pr34808.c: New test. + 2008-01-20 Paul Thomas <pault@gcc.gnu.org> PR fortran/34784 diff --git a/gcc/testsuite/gcc.c-torture/compile/pr34808.c b/gcc/testsuite/gcc.c-torture/compile/pr34808.c new file mode 100644 index 0000000..8224061 --- /dev/null +++ b/gcc/testsuite/gcc.c-torture/compile/pr34808.c @@ -0,0 +1,29 @@ +/* PR 34808 */ +/* { dg-do compile } +/* { dg-options "-fno-tree-dominator-opts" } */ + +extern int flags; + +struct r { int code; int val;}; + +int +foo (struct r *home) +{ + int n = 0; + int regno = -1; + + if (home->code == 0) + regno = home->val; + + if (home->code == 1) + bar (); + else if (regno >= 0) + n = (regno == 16 + ? 16 + : (regno - (unsigned long long) (flags != 0 ? 63 : 15) + ? regno - 128 + : -1)); + + baz (); + return n; +} |