On Tue, 12 Jul 2011, Ulrich Weigand wrote:
> Richard Guenther wrote:
>
> > 2011-07-11 Richard Guenther <rguent...@suse.de>
> >
> > * tree-vrp.c (simplify_conversion_using_ranges): Manually
> > translate the source value-range through the conversion chain.
>
> This causes a build failure in cachemgr.c on spu-elf. A slightly
> modified simplified test case also fails on i386-linux:
>
> void *
> test (unsigned long long x, unsigned long long y)
> {
> return (void *) (unsigned int) (x / y);
> }
>
> compiled with -O2 results in:
>
> test.i: In function 'test':
> test.i:3:1: error: invalid types in nop conversion
> void *
> long long unsigned int
> D.1962_5 = (void *) D.1963_3;
>
> test.i:3:1: internal compiler error: verify_gimple failed
>
> Any thoughts?
Fix in testing.
Richard.
2011-07-13 Richard Guenther <rguent...@suse.de>
* tree-vrp.c (simplify_conversion_using_ranges): Make sure
the final type is integral.
* gcc.dg/torture/20110713-1.c: New testcase.
Index: gcc/tree-vrp.c
===================================================================
--- gcc/tree-vrp.c (revision 176224)
+++ gcc/tree-vrp.c (working copy)
@@ -7353,6 +7353,8 @@ simplify_conversion_using_ranges (gimple
double_int innermin, innermax, middlemin, middlemax;
finaltype = TREE_TYPE (gimple_assign_lhs (stmt));
+ if (!INTEGRAL_TYPE_P (finaltype))
+ return false;
middleop = gimple_assign_rhs1 (stmt);
def_stmt = SSA_NAME_DEF_STMT (middleop);
if (!is_gimple_assign (def_stmt)
Index: gcc/testsuite/gcc.dg/torture/20110713-1.c
===================================================================
--- gcc/testsuite/gcc.dg/torture/20110713-1.c (revision 0)
+++ gcc/testsuite/gcc.dg/torture/20110713-1.c (revision 0)
@@ -0,0 +1,8 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target ilp32 } */
+
+void *
+test (unsigned long long x, unsigned long long y)
+{
+ return (void *) (unsigned int) (x / y);
+}
