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| author | Richard Guenther <rguenther@suse.de> | 2009-04-11 07:34:09 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2009-04-11 07:34:09 +0000 |
| commit | 8810712ed9d1a5c2031c640706af1a87acfd3e06 (patch) | |
| tree | 90a319bf42d7d6bc1abc0e0b94bf8af1853a0f95 /gcc | |
| parent | fa78c0c18bd008b04e41e1679461a0d837e72087 (diff) | |
| download | gcc-8810712ed9d1a5c2031c640706af1a87acfd3e06.zip gcc-8810712ed9d1a5c2031c640706af1a87acfd3e06.tar.gz gcc-8810712ed9d1a5c2031c640706af1a87acfd3e06.tar.bz2 | |
re PR tree-optimization/39713 (ICE in get_expr_value_id)
2009-04-11 Richard Guenther <rguenther@suse.de>
PR tree-optimization/39713
* tree-ssa-sccvn.c (vn_get_expr_for): Make sure built
reference trees have SSA_NAME operands.
* g++.dg/torture/pr39713.C: New testcase.
From-SVN: r145951
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/g++.dg/torture/pr39713.C | 25 | ||||
| -rw-r--r-- | gcc/tree-ssa-sccvn.c | 7 |
4 files changed, 40 insertions, 3 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 59c28c9..3d6b046 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,11 @@ 2009-04-11 Richard Guenther <rguenther@suse.de> + PR tree-optimization/39713 + * tree-ssa-sccvn.c (vn_get_expr_for): Make sure built + reference trees have SSA_NAME operands. + +2009-04-11 Richard Guenther <rguenther@suse.de> + PR c/39712 * c-gimplify.c (c_gimplify_expr): Adjust check for mismatched address expressions. diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index f74dad2..bcd3c2b 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2009-04-11 Richard Guenther <rguenther@suse.de> + + PR tree-optimization/39713 + * g++.dg/torture/pr39713.C: New testcase. + 2009-04-10 Richard Guenther <rguenther@suse.de> PR c/39712 diff --git a/gcc/testsuite/g++.dg/torture/pr39713.C b/gcc/testsuite/g++.dg/torture/pr39713.C new file mode 100644 index 0000000..4ff72d1 --- /dev/null +++ b/gcc/testsuite/g++.dg/torture/pr39713.C @@ -0,0 +1,25 @@ +/* { dg-do compile } */ + +template <typename To, typename From> +static inline To +bitwise_cast (From from) +{ + union + { + From f; + To t; + } u; + u.f = from; + return u.t; +} + +extern void foo (unsigned char *); + +double +bar () +{ + unsigned char b[sizeof (unsigned long long)]; + foo (b); + return bitwise_cast<double> (*(unsigned long long *) b); +} + diff --git a/gcc/tree-ssa-sccvn.c b/gcc/tree-ssa-sccvn.c index 416fa7f..f3b00e9 100644 --- a/gcc/tree-ssa-sccvn.c +++ b/gcc/tree-ssa-sccvn.c @@ -257,9 +257,10 @@ vn_get_expr_for (tree name) switch (TREE_CODE_CLASS (gimple_assign_rhs_code (def_stmt))) { case tcc_reference: - if (gimple_assign_rhs_code (def_stmt) == VIEW_CONVERT_EXPR - || gimple_assign_rhs_code (def_stmt) == REALPART_EXPR - || gimple_assign_rhs_code (def_stmt) == IMAGPART_EXPR) + if ((gimple_assign_rhs_code (def_stmt) == VIEW_CONVERT_EXPR + || gimple_assign_rhs_code (def_stmt) == REALPART_EXPR + || gimple_assign_rhs_code (def_stmt) == IMAGPART_EXPR) + && TREE_CODE (gimple_assign_rhs1 (def_stmt)) == SSA_NAME) expr = fold_build1 (gimple_assign_rhs_code (def_stmt), gimple_expr_type (def_stmt), TREE_OPERAND (gimple_assign_rhs1 (def_stmt), 0)); |