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| author | Tom de Vries <tom@codesourcery.com> | 2012-09-07 09:21:21 +0000 |
|---|---|---|
| committer | Tom de Vries <vries@gcc.gnu.org> | 2012-09-07 09:21:21 +0000 |
| commit | 4d9df7c441103cf4a7fdaf5cf6aa9b04eb47954e (patch) | |
| tree | 2a74ef7051b0932a88c20ef4e173a4d40b0dfc6a /gcc | |
| parent | 25722436a61aa310416ceb64254e634236442d05 (diff) | |
| download | gcc-4d9df7c441103cf4a7fdaf5cf6aa9b04eb47954e.zip gcc-4d9df7c441103cf4a7fdaf5cf6aa9b04eb47954e.tar.gz gcc-4d9df7c441103cf4a7fdaf5cf6aa9b04eb47954e.tar.bz2 | |
re PR tree-optimization/53986 (missing vrp on bit-mask test, LSHIFT_EXPR not handled)
2012-09-07 Tom de Vries <tom@codesourcery.com>
PR tree-optimization/53986
* gcc.dg/tree-ssa/vrp80.c: New test.
* gcc.dg/tree-ssa/vrp80-2.c: Same.
From-SVN: r191058
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/testsuite/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/tree-ssa/vrp80-2.c | 38 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/tree-ssa/vrp80.c | 33 |
3 files changed, 77 insertions, 0 deletions
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 7622723..d9df173 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,9 @@ +2012-09-07 Tom de Vries <tom@codesourcery.com> + + PR tree-optimization/53986 + * gcc.dg/tree-ssa/vrp80.c: New test. + * gcc.dg/tree-ssa/vrp80-2.c: Same. + 2012-09-06 Jason Merrill <jason@redhat.com> PR c++/54341 diff --git a/gcc/testsuite/gcc.dg/tree-ssa/vrp80-2.c b/gcc/testsuite/gcc.dg/tree-ssa/vrp80-2.c new file mode 100644 index 0000000..bb38f27 --- /dev/null +++ b/gcc/testsuite/gcc.dg/tree-ssa/vrp80-2.c @@ -0,0 +1,38 @@ +/* { dg-do compile } */ +/* { dg-options "-O2 -fno-tree-switch-conversion -fdump-tree-vrp1" } */ + +extern void vrp_keep (void); + +/* Test <<. */ + +void +f3 (int s, int b) +{ + if (s >> 3 == -2) + /* s in range [-16, -9]. */ + { + s += 17; + /* s in range [1, 8]. */ + b = (b & 1) + 1; + /* b in range [1, 2]. */ + b = b << s; + /* b in range [bmin << smin, bmax << smax], + == [1 << 1, 2 << 8] + == [2, 512]. */ + if (b == 2) + vrp_keep (); + if (b == 512) + vrp_keep (); + } +} + +int +main () +{ + return 0; +} + +/* { dg-final { scan-tree-dump-times "vrp_keep \\(" 2 "vrp1"} } */ +/* { dg-final { cleanup-tree-dump "vrp1" } } */ + + diff --git a/gcc/testsuite/gcc.dg/tree-ssa/vrp80.c b/gcc/testsuite/gcc.dg/tree-ssa/vrp80.c new file mode 100644 index 0000000..2d00040 --- /dev/null +++ b/gcc/testsuite/gcc.dg/tree-ssa/vrp80.c @@ -0,0 +1,33 @@ +/* { dg-do link } */ +/* { dg-options "-O2 -fno-tree-switch-conversion" } */ + +extern void link_error (void); + +/* Test <<. */ + +void +f3 (int s, int b) +{ + if (s >> 3 == -2) + /* s in range [-16, -9]. */ + { + s += 17; + /* s in range [1, 8]. */ + b = (b & 1) + 1; + /* b in range [1, 2]. */ + b = b << s; + /* b in range [bmin << smin, bmax << smax], + == [1 << 1, 2 << 8] + == [2, 512]. */ + if (b == 1 || b == 513) + link_error (); + } +} + +int +main () +{ + return 0; +} + + |