Successfully bootstrapped & regrtested on x86_64-pc-linux-gnu.
Pushed to trunk as r12-8159-gb209a349268d24.
gcc/analyzer/ChangeLog:
PR analyzer/105252
* svalue.cc (cmp_cst): When comparing VECTOR_CSTs, compare the
types of the encoded elements before calling cmp_cst on them.
gcc/testsuite/ChangeLog:
PR analyzer/105252
* gcc.dg/analyzer/pr105252.c: New test.
Signed-off-by: David Malcolm <[email protected]>
---
gcc/analyzer/svalue.cc | 13 ++++++++++---
gcc/testsuite/gcc.dg/analyzer/pr105252.c | 20 ++++++++++++++++++++
2 files changed, 30 insertions(+), 3 deletions(-)
create mode 100644 gcc/testsuite/gcc.dg/analyzer/pr105252.c
diff --git a/gcc/analyzer/svalue.cc b/gcc/analyzer/svalue.cc
index 553edae7250..536bc288dbf 100644
--- a/gcc/analyzer/svalue.cc
+++ b/gcc/analyzer/svalue.cc
@@ -337,9 +337,16 @@ cmp_cst (const_tree cst1, const_tree cst2)
return cmp_nelts_per_pattern;
unsigned encoded_nelts = vector_cst_encoded_nelts (cst1);
for (unsigned i = 0; i < encoded_nelts; i++)
- if (int el_cmp = cmp_cst (VECTOR_CST_ENCODED_ELT (cst1, i),
- VECTOR_CST_ENCODED_ELT (cst2, i)))
- return el_cmp;
+ {
+ const_tree elt1 = VECTOR_CST_ENCODED_ELT (cst1, i);
+ const_tree elt2 = VECTOR_CST_ENCODED_ELT (cst2, i);
+ int t1 = TYPE_UID (TREE_TYPE (elt1));
+ int t2 = TYPE_UID (TREE_TYPE (elt2));
+ if (int cmp_type = t1 - t2)
+ return cmp_type;
+ if (int el_cmp = cmp_cst (elt1, elt2))
+ return el_cmp;
+ }
return 0;
}
}
diff --git a/gcc/testsuite/gcc.dg/analyzer/pr105252.c
b/gcc/testsuite/gcc.dg/analyzer/pr105252.c
new file mode 100644
index 00000000000..a093eababc5
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/analyzer/pr105252.c
@@ -0,0 +1,20 @@
+/* { dg-additional-options "-fnon-call-exceptions -O" } */
+
+typedef unsigned char C;
+typedef unsigned char __attribute__((__vector_size__ (4))) V;
+
+C m;
+
+static inline void
+bar (C c, V v, V *r)
+{
+ v %= (c | v) % m;
+ *r = v;
+}
+
+void
+foo (void)
+{
+ V x;
+ bar (0, (V){2}, &x);
+}
--
2.26.3
