diff options
| author | Michael Hayes <m.hayes@elec.canterbury.ac.nz> | 2003-03-15 02:44:29 +0000 |
|---|---|---|
| committer | Michael Hayes <m.hayes@gcc.gnu.org> | 2003-03-15 02:44:29 +0000 |
| commit | d8eed979a34b1888fe34127d183a053ccc9a6a67 (patch) | |
| tree | 9969c224172f9573e7cd998f797e895995e04841 /gcc | |
| parent | af75fb675d7e451df34a1114b236e2291ee5f638 (diff) | |
| download | gcc-d8eed979a34b1888fe34127d183a053ccc9a6a67.zip gcc-d8eed979a34b1888fe34127d183a053ccc9a6a67.tar.gz gcc-d8eed979a34b1888fe34127d183a053ccc9a6a67.tar.bz2 | |
re PR rtl-optimization/9387 (jump threading bug)
PR optimization/9387
* function.c (thread_prologue_and_epilogue_insns): Use redirect_jump
for conditional returns.
From-SVN: r64390
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/function.c | 13 |
2 files changed, 7 insertions, 12 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 146eb18..206fffc 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2003-03-15 Michael Hayes <m.hayes@elec.canterbury.ac.nz> + + PR optimization/9387 + * function.c (thread_prologue_and_epilogue_insns): Use redirect_jump + for conditional returns. + 2003-03-14 Jason Merrill <jason@redhat.com> PR optimization/6871 diff --git a/gcc/function.c b/gcc/function.c index 73527bc..26fc9ecc 100644 --- a/gcc/function.c +++ b/gcc/function.c @@ -7601,19 +7601,8 @@ thread_prologue_and_epilogue_insns (f) that with a conditional return instruction. */ else if (condjump_p (jump)) { - rtx ret, *loc; - - ret = SET_SRC (PATTERN (jump)); - if (GET_CODE (XEXP (ret, 1)) == LABEL_REF) - loc = &XEXP (ret, 1); - else - loc = &XEXP (ret, 2); - ret = gen_rtx_RETURN (VOIDmode); - - if (! validate_change (jump, loc, ret, 0)) + if (! redirect_jump (jump, 0, 1)) continue; - if (JUMP_LABEL (jump)) - LABEL_NUSES (JUMP_LABEL (jump))--; /* If this block has only one successor, it both jumps and falls through to the fallthru block, so we can't |