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* [gcc r14-8950] tree-optimization/113898 - ICE with sanity checking for VN ref adjustment
@ 2024-02-13 10:45 Richard Biener
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From: Richard Biener @ 2024-02-13 10:45 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:af6d8d0cc1ac56eba55ef658c664236208f88169
commit r14-8950-gaf6d8d0cc1ac56eba55ef658c664236208f88169
Author: Richard Biener <rguenther@suse.de>
Date: Tue Feb 13 10:04:31 2024 +0100
tree-optimization/113898 - ICE with sanity checking for VN ref adjustment
The following fixes a missing add to the accumulated offset when
adjusting an ARRAY_REF op for value-ranges applied to by
get_ref_base_and_extent.
PR tree-optimization/113898
* tree-ssa-sccvn.cc (copy_reference_ops_from_ref): Add
missing accumulated off adjustment.
* gcc.dg/torture/pr113898.c: New testcase.
Diff:
---
gcc/testsuite/gcc.dg/torture/pr113898.c | 16 ++++++++++++++++
gcc/tree-ssa-sccvn.cc | 1 +
2 files changed, 17 insertions(+)
diff --git a/gcc/testsuite/gcc.dg/torture/pr113898.c b/gcc/testsuite/gcc.dg/torture/pr113898.c
new file mode 100644
index 000000000000..6832a3452718
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/torture/pr113898.c
@@ -0,0 +1,16 @@
+/* { dg-do compile } */
+
+int a, d;
+unsigned **b;
+long c, f;
+long e[2][1];
+void g() {
+ int h = 0;
+ for (; h < 2; h++) {
+ e[h][d + **b + a] = c;
+ if (f)
+ for (;;)
+ ;
+ }
+}
+void main() {}
diff --git a/gcc/tree-ssa-sccvn.cc b/gcc/tree-ssa-sccvn.cc
index 2823573b656e..5a49390a79cb 100644
--- a/gcc/tree-ssa-sccvn.cc
+++ b/gcc/tree-ssa-sccvn.cc
@@ -1126,6 +1126,7 @@ copy_reference_ops_from_ref (tree ref, vec<vn_reference_op_s> *result)
op.op0 = wide_int_to_tree (TREE_TYPE (op.op0),
wi::to_poly_wide (op.op1) + idx);
op.off = idx * elsz;
+ off += op.off;
}
else
{
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