Since all computations in tree-object-size are now done in sizetype and
not HOST_WIDE_INT, comparisons after conversion to HOST_WIDE_INT would
be incorrect. Instead, truncate unknown (object_size_type) to sizetype
to compare with the computed size to evaluate if it is unknown.
gcc/ChangeLog:
PR tree-optimization/103759
* tree-object-size (size_unknown_p): Construct a size_unknown
and compare with VAL.
Signed-off-by: Siddhesh Poyarekar <siddh...@gotplt.org>
---
This fixes all the 32-bit torture failures on i686, tested with
configuration:
--enable-clocale=gnu --with-system-zlib --enable-shared --enable-cet
--with-demangler-in-ld --enable-libmpx i686-linux --with-fpmath=sse
--enable-languages=c,c++,lto --disable-bootstrap
and also with x86_64 to ensure I didn't regress there. I have a full
bootstrap build and test run in progress.
gcc/tree-object-size.c | 18 +++++++++---------
1 file changed, 9 insertions(+), 9 deletions(-)
diff --git a/gcc/tree-object-size.c b/gcc/tree-object-size.c
index 71f6b747d05..71c7935cb07 100644
--- a/gcc/tree-object-size.c
+++ b/gcc/tree-object-size.c
@@ -100,15 +100,6 @@ unknown (int object_size_type)
return ~initval (object_size_type);
}
-/* Return true if VAL is represents an unknown size for OBJECT_SIZE_TYPE. */
-
-static inline bool
-size_unknown_p (tree val, int object_size_type)
-{
- return (tree_fits_uhwi_p (val)
- && tree_to_uhwi (val) == unknown (object_size_type));
-}
-
/* Return a tree with initial value for OBJECT_SIZE_TYPE. */
static inline tree
@@ -125,6 +116,15 @@ size_unknown (int object_size_type)
return size_int (unknown (object_size_type));
}
+/* Return true if VAL is represents an unknown size for OBJECT_SIZE_TYPE. */
+
+static inline bool
+size_unknown_p (tree val, int object_size_type)
+{
+ return (TREE_CODE (val) == INTEGER_CST
+ && tree_int_cst_compare (val, size_unknown (object_size_type)));
+}
+
/* Grow object_sizes[OBJECT_SIZE_TYPE] to num_ssa_names. */
static inline void
--
2.31.1
