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| author | Richard Biener <rguenther@suse.de> | 2017-04-12 13:47:26 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2017-04-12 13:47:26 +0000 |
| commit | 940c9a7c2cf3bbbf43b0602c9283bf7579cf05ec (patch) | |
| tree | 3e96366740f1544c7be9d1ba28787488e0e7ef08 | |
| parent | 7f7e9dae36c8dd57ab89dae47a87903bbfefb530 (diff) | |
| download | gcc-940c9a7c2cf3bbbf43b0602c9283bf7579cf05ec.zip gcc-940c9a7c2cf3bbbf43b0602c9283bf7579cf05ec.tar.gz gcc-940c9a7c2cf3bbbf43b0602c9283bf7579cf05ec.tar.bz2 | |
re PR tree-optimization/80359 (DSE causes error: invalid reference prefix)
2017-04-12 Richard Biener <rguenther@suse.de>
Jeff Law <law@redhat.com>
PR tree-optimization/80359
* tree-ssa-dse.c (maybe_trim_partially_dead_store): Do not
trim stores to TARGET_MEM_REFs.
* gcc.dg/torture/pr80359.c: New testcase.
Co-Authored-By: Jeff Law <law@redhat.com>
From-SVN: r246875
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/torture/pr80359.c | 12 | ||||
| -rw-r--r-- | gcc/tree-ssa-dse.c | 3 |
4 files changed, 27 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index d59a0e9..1f98b88 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,4 +1,11 @@ 2017-04-12 Richard Biener <rguenther@suse.de> + Jeff Law <law@redhat.com> + + PR tree-optimization/80359 + * tree-ssa-dse.c (maybe_trim_partially_dead_store): Do not + trim stores to TARGET_MEM_REFs. + +2017-04-12 Richard Biener <rguenther@suse.de> PR tree-optimization/79390 * gimple-ssa-split-paths.c (is_feasible_trace): Restrict diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 115e123..bc2424a 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,4 +1,10 @@ 2017-04-12 Richard Biener <rguenther@suse.de> + Jeff Law <law@redhat.com> + + PR tree-optimization/80359 + * gcc.dg/torture/pr80359.c: New testcase. + +2017-04-12 Richard Biener <rguenther@suse.de> Bernd Edlinger <bernd.edlinger@hotmail.de> PR middle-end/79671 diff --git a/gcc/testsuite/gcc.dg/torture/pr80359.c b/gcc/testsuite/gcc.dg/torture/pr80359.c new file mode 100644 index 0000000..89b3d53 --- /dev/null +++ b/gcc/testsuite/gcc.dg/torture/pr80359.c @@ -0,0 +1,12 @@ +/* { dg-do compile } */ + +void FFT(_Complex *X, int length) +{ + unsigned i, j; + for (; i < length; i++) + { + X[i] = 0; + for (j = 0; j < length; j++) + X[i] = X[i] / length; + } +} diff --git a/gcc/tree-ssa-dse.c b/gcc/tree-ssa-dse.c index 53feaf3..90230ab 100644 --- a/gcc/tree-ssa-dse.c +++ b/gcc/tree-ssa-dse.c @@ -451,7 +451,8 @@ maybe_trim_memstar_call (ao_ref *ref, sbitmap live, gimple *stmt) static void maybe_trim_partially_dead_store (ao_ref *ref, sbitmap live, gimple *stmt) { - if (is_gimple_assign (stmt)) + if (is_gimple_assign (stmt) + && TREE_CODE (gimple_assign_lhs (stmt)) != TARGET_MEM_REF) { switch (gimple_assign_rhs_code (stmt)) { |