diff options
| author | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2006-05-04 13:56:52 +0000 |
|---|---|---|
| committer | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2006-05-04 13:56:52 +0000 |
| commit | cbc74ef353a26fc3f794397d57bb48e4e49b0134 (patch) | |
| tree | 6d24795e20725440defd44c1ddfb42297faca758 /gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-1.c | |
| parent | 40c41957df55e39ffec994cf8fffe5894d2d5325 (diff) | |
| download | gcc-cbc74ef353a26fc3f794397d57bb48e4e49b0134.tar.gz | |
2006-05-04 Richard Guenther <rguenther@suse.de>
PR tree-optimization/14287
PR tree-optimization/14844
PR tree-optimization/19792
PR tree-optimization/21608
PR tree-optimization/27090
* tree-ssa-pre.c (try_combine_conversion): New function.
(compute_avail): After constructing the value-handle
expression, use try_combine_conversion to combine NOP_EXPRs
with previous value-handle expressions and use the result if it
is available.
* gcc.dg/tree-ssa/ssa-fre-1.c: New testcase.
* gcc.dg/tree-ssa/ssa-fre-2.c: Likewise.
* gcc.dg/tree-ssa/ssa-fre-3.c: Likewise.
* gcc.dg/tree-ssa/ssa-fre-4.c: Likewise.
* gcc.dg/tree-ssa/ssa-fre-5.c: Likewise.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@113527 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-1.c')
| -rw-r--r-- | gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-1.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-1.c b/gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-1.c new file mode 100644 index 00000000000..0cb63242c0e --- /dev/null +++ b/gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-1.c @@ -0,0 +1,16 @@ +/* { dg-do compile } */ +/* { dg-options "-O -fdump-tree-fre-details" } */ + +/* From PR27090. */ + +int f(int *a) +{ + int t = *a; + unsigned *b = (unsigned *)a; + int *c = (int*)b; + return *c + t; +} + +/* { dg-final { scan-tree-dump "Replaced \\\(int \\\*\\\) b_.*with a_" "fre" } } */ +/* { dg-final { scan-tree-dump "Replaced \\\*c_.*with t_" "fre" } } */ +/* { dg-final { cleanup-tree-dump "fre" } } */ |