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| author | Sebastian Pop <sebastian.pop@amd.com> | 2011-07-26 18:47:44 +0000 |
|---|---|---|
| committer | Sebastian Pop <spop@gcc.gnu.org> | 2011-07-26 18:47:44 +0000 |
| commit | 4c7d675552917db06371e5316b6a170b246a0653 (patch) | |
| tree | eb8c91e40946cf110afb23ca04d3f96c9b631c4a | |
| parent | bf03b9ffeca63804bbdaafe308279b42caa0e2be (diff) | |
| download | gcc-4c7d675552917db06371e5316b6a170b246a0653.zip gcc-4c7d675552917db06371e5316b6a170b246a0653.tar.gz gcc-4c7d675552917db06371e5316b6a170b246a0653.tar.bz2 | |
Fix PR48805: Do not instantiate ADDR_EXPRs
With this patch we avoid instantiating ADDR_EXPR: it makes no sense
to translate &b[i] into &b[{0, +, 1}_1].
Bootstrapped and tested on amd64-linux.
2011-07-26 Sebastian Pop <sebastian.pop@amd.com>
PR middle-end/48805
* tree-scalar-evolution.c (instantiate_scev_r): Return
chrec_dont_know for ADDR_EXPR.
* gcc.dg/graphite/id-pr48805.c: New.
From-SVN: r176801
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/graphite/id-pr48805.c | 20 | ||||
| -rw-r--r-- | gcc/tree-scalar-evolution.c | 1 |
4 files changed, 33 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 06e0074..d3d9919 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2011-07-26 Sebastian Pop <sebastian.pop@amd.com> + + PR middle-end/48805 + * tree-scalar-evolution.c (instantiate_scev_r): Return + chrec_dont_know for ADDR_EXPR. + 2011-07-26 Uros Bizjak <ubizjak@gmail.com> H.J. Lu <hongjiu.lu@intel.com> diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 1e351fe..4e0adb1 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2011-07-26 Sebastian Pop <sebastian.pop@amd.com> + + PR middle-end/48805 + * gcc.dg/graphite/id-pr48805.c: New. + 2011-07-26 Tobias Burnus <burnus@net-b.de> * gfortran.dg/coarray_lib_token_2.f90: New. @@ -12,7 +17,7 @@ PR tree-opt/49671 * gcc.dg/tree-ssa/pr49671-1.c: New testcase. * gcc.dg/tree-ssa/pr49671-2.c: New testcase. - + 2011-07-25 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE> * lib/target-supports.exp (check_effective_target_mmap): New proc. diff --git a/gcc/testsuite/gcc.dg/graphite/id-pr48805.c b/gcc/testsuite/gcc.dg/graphite/id-pr48805.c new file mode 100644 index 0000000..f13a828 --- /dev/null +++ b/gcc/testsuite/gcc.dg/graphite/id-pr48805.c @@ -0,0 +1,20 @@ +void *A(const void *a); +void C(void); + +static void B(unsigned short a[]) +{ + long i, j, tmp; + + for(i = 0; i < 3; i++) { + for(j = 1; j <= 3; j++) + tmp -= a[i - j]; + + a[i] = (unsigned short)(tmp >> 1); + } +} +void C(void) +{ + unsigned short a[3], b[3]; + B(b + 1); + A(a); +} diff --git a/gcc/tree-scalar-evolution.c b/gcc/tree-scalar-evolution.c index bfa8c93..00fcd3f 100644 --- a/gcc/tree-scalar-evolution.c +++ b/gcc/tree-scalar-evolution.c @@ -2645,6 +2645,7 @@ instantiate_scev_r (basic_block instantiate_below, TREE_OPERAND (chrec, 0), fold_conversions, cache, size_expr); + case ADDR_EXPR: case SCEV_NOT_KNOWN: return chrec_dont_know; |