https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97004
--- Comment #1 from Tom de Vries <vries at gcc dot gnu.org> ---
Tentative patch:
...
diff --git a/gcc/config/nvptx/nvptx.c b/gcc/config/nvptx/nvptx.c
index 0376ad6ce9f..26868590322 100644
--- a/gcc/config/nvptx/nvptx.c
+++ b/gcc/config/nvptx/nvptx.c
@@ -2054,7 +2054,11 @@ nvptx_assemble_value (unsigned HOST_WIDE_INT val,
unsigned size)
for (unsigned part = 0; size; size -= part)
{
- val >>= part * BITS_PER_UNIT;
+ if (part == sizeof (val))
+ /* Avoid undefined behaviour. */
+ val = 0;
+ else
+ val >>= (part * BITS_PER_UNIT);
part = init_frag.size - init_frag.offset;
part = MIN (part, size);
...
And we have:
...
// BEGIN GLOBAL VAR DEF: g
.visible .global .align 8 .u64 g[2] = { 9, 0 };
...
