1 files changed, 27 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/pr23049.c b/gcc/testsuite/gcc.dg/pr23049.c
new file mode 100644
index 000000000..e58cef8fe
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr23049.c
@@ -0,0 +1,27 @@
+/* This was an ICE in fold where we tried to fold something like,
+
+     a = 0 == 0 ? 0 : 3988292384
+
+   after doing if-conversion for the vectorizer.  Folding "0 == 0"
+   should have been done before calling fold on the whole rhs of
+   the above expression.  */
+
+/* { dg-do compile } */
+/* { dg-require-effective-target int32plus } */
+/* { dg-options "-O3 -ftree-vectorize" } */
+
+static unsigned short int crc_table[256];
+void AC3_encode_init(void)
+{
+  unsigned int c, n, k;
+  for(n=0;  n<256; n++)
+  {
+    c = n << 8;
+    for (k = 0; k < 8; k++)
+    {
+      if (c & (1 << 15))
+       c = ((c << 1) & 0xffff) ^ (((1 << 0) | (1 << 2) | (1 << 15) | (1 << 16)) & 0xffff);
+    }
+    crc_table[n] = c;
+  }
+}