|
 |
fdda51 |
2016-02-26 Jakub Jelinek <jakub@redhat.com>
|
|
|
fdda51 |
Eric Botcazou <ebotcazou@adacore.com>
|
|
|
fdda51 |
|
|
|
fdda51 |
PR rtl-optimization/69891
|
|
|
fdda51 |
* dse.c (scan_insn): If we can't figure out memset arguments
|
|
|
fdda51 |
or they are non-constant, call clear_rhs_from_active_local_stores.
|
|
|
fdda51 |
|
|
|
fdda51 |
--- gcc/testsuite/gcc.target/i386/pr69891.c (nonexistent)
|
|
|
fdda51 |
+++ gcc/testsuite/gcc.target/i386/pr69891.c (revision 238137)
|
|
|
fdda51 |
@@ -0,0 +1,30 @@
|
|
|
fdda51 |
+/* PR rtl-optimization/69891 */
|
|
|
fdda51 |
+/* { dg-do run } */
|
|
|
fdda51 |
+/* { dg-options "-O -fno-tree-fre -mstringop-strategy=libcall -Wno-psabi" } */
|
|
|
fdda51 |
+/* { dg-additional-options "-mno-sse" { target ia32 } } */
|
|
|
fdda51 |
+
|
|
|
fdda51 |
+typedef unsigned short A;
|
|
|
fdda51 |
+typedef unsigned short B __attribute__ ((vector_size (32)));
|
|
|
fdda51 |
+typedef unsigned int C;
|
|
|
fdda51 |
+typedef unsigned int D __attribute__ ((vector_size (32)));
|
|
|
fdda51 |
+typedef unsigned long long E;
|
|
|
fdda51 |
+typedef unsigned long long F __attribute__ ((vector_size (32)));
|
|
|
fdda51 |
+
|
|
|
fdda51 |
+__attribute__((noinline, noclone)) unsigned
|
|
|
fdda51 |
+foo(D a, B b, D c, F d)
|
|
|
fdda51 |
+{
|
|
|
fdda51 |
+ b /= (B) {1, -c[0]} | 1;
|
|
|
fdda51 |
+ c[0] |= 7;
|
|
|
fdda51 |
+ a %= c | 1;
|
|
|
fdda51 |
+ c ^= c;
|
|
|
fdda51 |
+ return a[0] + b[15] + c[0] + d[3];
|
|
|
fdda51 |
+}
|
|
|
fdda51 |
+
|
|
|
fdda51 |
+int
|
|
|
fdda51 |
+main ()
|
|
|
fdda51 |
+{
|
|
|
fdda51 |
+ unsigned x = foo ((D) {}, (B) {}, (D) {}, (F) {});
|
|
|
fdda51 |
+ if (x != 0)
|
|
|
fdda51 |
+ __builtin_abort ();
|
|
|
fdda51 |
+ return 0;
|
|
|
fdda51 |
+}
|
|
|
fdda51 |
--- gcc/dse.c (revision 238136)
|
|
|
fdda51 |
+++ gcc/dse.c (revision 238137)
|
|
|
fdda51 |
@@ -2582,6 +2582,8 @@
|
|
|
fdda51 |
active_local_stores = insn_info;
|
|
|
fdda51 |
}
|
|
|
fdda51 |
}
|
|
|
fdda51 |
+ else
|
|
|
fdda51 |
+ clear_rhs_from_active_local_stores ();
|
|
|
fdda51 |
}
|
|
|
fdda51 |
}
|
|
|
fdda51 |
|