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| author | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
|---|---|---|
| committer | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
| commit | 554fd8c5195424bdbcabf5de30fdc183aba391bd (patch) | |
| tree | 976dc5ab7fddf506dadce60ae936f43f58787092 /gcc/testsuite/gcc.dg/tree-ssa/ssa-pre-2.c | |
| download | cbb-gcc-4.6.4-554fd8c5195424bdbcabf5de30fdc183aba391bd.tar.bz2 cbb-gcc-4.6.4-554fd8c5195424bdbcabf5de30fdc183aba391bd.tar.xz | |
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Diffstat (limited to 'gcc/testsuite/gcc.dg/tree-ssa/ssa-pre-2.c')
| -rw-r--r-- | gcc/testsuite/gcc.dg/tree-ssa/ssa-pre-2.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/ssa-pre-2.c b/gcc/testsuite/gcc.dg/tree-ssa/ssa-pre-2.c new file mode 100644 index 000000000..311f12781 --- /dev/null +++ b/gcc/testsuite/gcc.dg/tree-ssa/ssa-pre-2.c @@ -0,0 +1,24 @@ +/* { dg-do compile } */ +/* { dg-options "-O2 -fdump-tree-pre-stats" } */ +int motion_test1(int data, int data_0, int data_3, int v) +{ + int i; + int t, u; + + if (data) + i = data_0 + data_3; + else { + v = 2; + i = 5; + } + t = data_0 + data_3; + u = i; + return v * t * u; +} +/* We should eliminate one computation of data_0 + data_3 along the + main path. We cannot re-associate v * t * u due to undefined + signed overflow so we do not eliminate one computation of v * i along + the main path. */ +/* { dg-final { scan-tree-dump-times "Eliminated: 2" 1 "pre" { xfail *-*-* } } } */ +/* { dg-final { scan-tree-dump-times "Eliminated: 1" 1 "pre" } } */ +/* { dg-final { cleanup-tree-dump "pre" } } */ |