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| author | Jan Hubicka <jh@suse.cz> | 2007-11-29 22:57:38 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2007-11-29 22:57:38 +0100 |
| commit | f6f2da7df7acc7f6a9b7425c9e7ad8c304940299 (patch) | |
| tree | 333a102d3377440a02a26d058160b3f6993e09eb /gcc/tree-inline.c | |
| parent | 42924ed71f51fd6c33483ca202fc5a1ccff9b770 (diff) | |
| download | gcc-f6f2da7df7acc7f6a9b7425c9e7ad8c304940299.zip gcc-f6f2da7df7acc7f6a9b7425c9e7ad8c304940299.tar.gz gcc-f6f2da7df7acc7f6a9b7425c9e7ad8c304940299.tar.bz2 | |
re PR tree-optimization/33434 (inlining miscompilation)
PR tree-optimization/33434
* tree-inline.c (setup_one_parameter): If the value passed to
a parameter is never used, don't set it up.
* gcc.dg/pr33434-1.c: New test.
* gcc.dg/pr33434-2.c: New test.
* gcc.dg/pr33434-3.c: New test.
* gcc.dg/pr33434-4.c: New test.
From-SVN: r130521
Diffstat (limited to 'gcc/tree-inline.c')
| -rw-r--r-- | gcc/tree-inline.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/gcc/tree-inline.c b/gcc/tree-inline.c index e7fba91..1efc0ed 100644 --- a/gcc/tree-inline.c +++ b/gcc/tree-inline.c @@ -1508,6 +1508,14 @@ setup_one_parameter (copy_body_data *id, tree p, tree value, tree fn, return; } + /* If the value of argument is never used, don't care about initializing + it. */ + if (gimple_in_ssa_p (cfun) && !def && is_gimple_reg (p)) + { + gcc_assert (!value || !TREE_SIDE_EFFECTS (value)); + return; + } + /* Initialize this VAR_DECL from the equivalent argument. Convert the argument to the proper type in case it was promoted. */ if (value) |