diff mbox series

[bpf-next,v4,2/3] selftests/bpf: activate the OP_NE login in range_cond()

Message ID 20231217131716.830290-3-menglong8.dong@gmail.com
State New
Headers
Series [bpf-next,v4,1/3] bpf: make the verifier tracks the "not equal" for regs |

Commit Message

Menglong Dong Dec. 17, 2023, 1:17 p.m. UTC 
  The edge range checking for the registers is supported by the verifier
now, so we can activate the extended login in
tools/testing/selftests/bpf/prog_tests/reg_bounds.c/range_cond() to test
such logic.

Besides, I added some cases to the "crafted_cases" array for this logic.
These cases are mainly used to test the edge of the src reg and dst reg.

All reg bounds testings has passed in the SLOW_TESTS mode:

$ export SLOW_TESTS=1 && ./test_progs -t reg_bounds -j
Summary: 65/18959832 PASSED, 0 SKIPPED, 0 FAILED

Signed-off-by: Menglong Dong <menglong8.dong@gmail.com>
---
v3:
- do some adjustment to the crafted cases that we added
v2:
- add some cases to the "crafted_cases"
---
 .../selftests/bpf/prog_tests/reg_bounds.c     | 20 +++++++++++++------
 1 file changed, 14 insertions(+), 6 deletions(-)

Comments

Alexei Starovoitov Dec. 17, 2023, 6:20 p.m. UTC | #1 
On Sun, Dec 17, 2023 at 5:18 AM Menglong Dong <menglong8.dong@gmail.com> wrote:
>
> The edge range checking for the registers is supported by the verifier
> now, so we can activate the extended login in
> tools/testing/selftests/bpf/prog_tests/reg_bounds.c/range_cond() to test
> such logic.
>
> Besides, I added some cases to the "crafted_cases" array for this logic.
> These cases are mainly used to test the edge of the src reg and dst reg.
>
> All reg bounds testings has passed in the SLOW_TESTS mode:
>
> $ export SLOW_TESTS=1 && ./test_progs -t reg_bounds -j
> Summary: 65/18959832 PASSED, 0 SKIPPED, 0 FAILED
>
> Signed-off-by: Menglong Dong <menglong8.dong@gmail.com>
> ---
> v3:
> - do some adjustment to the crafted cases that we added
> v2:
> - add some cases to the "crafted_cases"
> ---
>  .../selftests/bpf/prog_tests/reg_bounds.c     | 20 +++++++++++++------
>  1 file changed, 14 insertions(+), 6 deletions(-)
>
> diff --git a/tools/testing/selftests/bpf/prog_tests/reg_bounds.c b/tools/testing/selftests/bpf/prog_tests/reg_bounds.c
> index 0c9abd279e18..c9dc9fe73211 100644
> --- a/tools/testing/selftests/bpf/prog_tests/reg_bounds.c
> +++ b/tools/testing/selftests/bpf/prog_tests/reg_bounds.c
> @@ -590,12 +590,7 @@ static void range_cond(enum num_t t, struct range x, struct range y,
>                 *newy = range(t, max_t(t, x.a, y.a), min_t(t, x.b, y.b));
>                 break;
>         case OP_NE:
> -               /* generic case, can't derive more information */
> -               *newx = range(t, x.a, x.b);
> -               *newy = range(t, y.a, y.b);
> -               break;
> -
> -               /* below extended logic is not supported by verifier just yet */
> +               /* below logic is supported by the verifier now */
>                 if (x.a == x.b && x.a == y.a) {
>                         /* X is a constant matching left side of Y */
>                         *newx = range(t, x.a, x.b);
> @@ -2101,6 +2096,19 @@ static struct subtest_case crafted_cases[] = {
>         {S32, S64, {(u32)(s32)S32_MIN, (u32)(s32)-255}, {(u32)(s32)-2, 0}},
>         {S32, S64, {0, 1}, {(u32)(s32)S32_MIN, (u32)(s32)S32_MIN}},
>         {S32, U32, {(u32)(s32)S32_MIN, (u32)(s32)S32_MIN}, {(u32)(s32)S32_MIN, (u32)(s32)S32_MIN}},
> +
> +       /* edge overlap testings for BPF_NE, skipped some cases that already
> +        * exist above.
> +        */
> +       {U64, U64, {0, U64_MAX}, {U64_MAX, U64_MAX}},
> +       {U64, U64, {0, U64_MAX}, {0, 0}},
> +       {S64, U64, {S64_MIN, 0}, {S64_MIN, S64_MIN}},
> +       {S64, U64, {S64_MIN, 0}, {0, 0}},
> +       {S64, U64, {S64_MIN, S64_MAX}, {S64_MAX, S64_MAX}},
> +       {U32, U32, {0, U32_MAX}, {0, 0}},
> +       {S32, U32, {(u32)(s32)S32_MIN, 0}, {0, 0}},
> +       {S32, U32, {(u32)(s32)S32_MIN, 0}, {(u32)(s32)S32_MIN, (u32)(s32)S32_MIN}},
> +       {S32, U32, {(u32)(s32)S32_MIN, S32_MAX}, {S32_MAX, S32_MAX}},

I think you're copying the style of the casts from few lines above,
but (s32)S32_MIN is unnecessary. S32_MIN includes the cast already.
Please remove and fix the above lines too.
Menglong Dong Dec. 18, 2023, 3:56 a.m. UTC | #2 
On Mon, Dec 18, 2023 at 2:20 AM Alexei Starovoitov
<alexei.starovoitov@gmail.com> wrote:
>
> On Sun, Dec 17, 2023 at 5:18 AM Menglong Dong <menglong8.dong@gmail.com> wrote:
> >
> > The edge range checking for the registers is supported by the verifier
> > now, so we can activate the extended login in
> > tools/testing/selftests/bpf/prog_tests/reg_bounds.c/range_cond() to test
> > such logic.
> >
> > Besides, I added some cases to the "crafted_cases" array for this logic.
> > These cases are mainly used to test the edge of the src reg and dst reg.
> >
> > All reg bounds testings has passed in the SLOW_TESTS mode:
> >
> > $ export SLOW_TESTS=1 && ./test_progs -t reg_bounds -j
> > Summary: 65/18959832 PASSED, 0 SKIPPED, 0 FAILED
> >
> > Signed-off-by: Menglong Dong <menglong8.dong@gmail.com>
> > ---
> > v3:
> > - do some adjustment to the crafted cases that we added
> > v2:
> > - add some cases to the "crafted_cases"
> > ---
> >  .../selftests/bpf/prog_tests/reg_bounds.c     | 20 +++++++++++++------
> >  1 file changed, 14 insertions(+), 6 deletions(-)
> >
> > diff --git a/tools/testing/selftests/bpf/prog_tests/reg_bounds.c b/tools/testing/selftests/bpf/prog_tests/reg_bounds.c
> > index 0c9abd279e18..c9dc9fe73211 100644
> > --- a/tools/testing/selftests/bpf/prog_tests/reg_bounds.c
> > +++ b/tools/testing/selftests/bpf/prog_tests/reg_bounds.c
> > @@ -590,12 +590,7 @@ static void range_cond(enum num_t t, struct range x, struct range y,
> >                 *newy = range(t, max_t(t, x.a, y.a), min_t(t, x.b, y.b));
> >                 break;
> >         case OP_NE:
> > -               /* generic case, can't derive more information */
> > -               *newx = range(t, x.a, x.b);
> > -               *newy = range(t, y.a, y.b);
> > -               break;
> > -
> > -               /* below extended logic is not supported by verifier just yet */
> > +               /* below logic is supported by the verifier now */
> >                 if (x.a == x.b && x.a == y.a) {
> >                         /* X is a constant matching left side of Y */
> >                         *newx = range(t, x.a, x.b);
> > @@ -2101,6 +2096,19 @@ static struct subtest_case crafted_cases[] = {
> >         {S32, S64, {(u32)(s32)S32_MIN, (u32)(s32)-255}, {(u32)(s32)-2, 0}},
> >         {S32, S64, {0, 1}, {(u32)(s32)S32_MIN, (u32)(s32)S32_MIN}},
> >         {S32, U32, {(u32)(s32)S32_MIN, (u32)(s32)S32_MIN}, {(u32)(s32)S32_MIN, (u32)(s32)S32_MIN}},
> > +
> > +       /* edge overlap testings for BPF_NE, skipped some cases that already
> > +        * exist above.
> > +        */
> > +       {U64, U64, {0, U64_MAX}, {U64_MAX, U64_MAX}},
> > +       {U64, U64, {0, U64_MAX}, {0, 0}},
> > +       {S64, U64, {S64_MIN, 0}, {S64_MIN, S64_MIN}},
> > +       {S64, U64, {S64_MIN, 0}, {0, 0}},
> > +       {S64, U64, {S64_MIN, S64_MAX}, {S64_MAX, S64_MAX}},
> > +       {U32, U32, {0, U32_MAX}, {0, 0}},
> > +       {S32, U32, {(u32)(s32)S32_MIN, 0}, {0, 0}},
> > +       {S32, U32, {(u32)(s32)S32_MIN, 0}, {(u32)(s32)S32_MIN, (u32)(s32)S32_MIN}},
> > +       {S32, U32, {(u32)(s32)S32_MIN, S32_MAX}, {S32_MAX, S32_MAX}},
>
> I think you're copying the style of the casts from few lines above,
> but (s32)S32_MIN is unnecessary. S32_MIN includes the cast already.
> Please remove and fix the above lines too.

Enn...yes, I simulated the usage of S32_MIN from the lines above.
You are right, the s32 casting is unnecessary, I'll just keep the
u32 casting.

I'll wait a while before sending the next version to see if
someone else any comments on this series.

Thanks!
Menglong Dong
Andrii Nakryiko Dec. 18, 2023, 5:58 p.m. UTC | #3 
On Sun, Dec 17, 2023 at 5:18 AM Menglong Dong <menglong8.dong@gmail.com> wrote:
>
> The edge range checking for the registers is supported by the verifier
> now, so we can activate the extended login in
> tools/testing/selftests/bpf/prog_tests/reg_bounds.c/range_cond() to test
> such logic.
>
> Besides, I added some cases to the "crafted_cases" array for this logic.
> These cases are mainly used to test the edge of the src reg and dst reg.
>
> All reg bounds testings has passed in the SLOW_TESTS mode:
>
> $ export SLOW_TESTS=1 && ./test_progs -t reg_bounds -j
> Summary: 65/18959832 PASSED, 0 SKIPPED, 0 FAILED
>
> Signed-off-by: Menglong Dong <menglong8.dong@gmail.com>
> ---
> v3:
> - do some adjustment to the crafted cases that we added
> v2:
> - add some cases to the "crafted_cases"
> ---
>  .../selftests/bpf/prog_tests/reg_bounds.c     | 20 +++++++++++++------
>  1 file changed, 14 insertions(+), 6 deletions(-)
>
> diff --git a/tools/testing/selftests/bpf/prog_tests/reg_bounds.c b/tools/testing/selftests/bpf/prog_tests/reg_bounds.c
> index 0c9abd279e18..c9dc9fe73211 100644
> --- a/tools/testing/selftests/bpf/prog_tests/reg_bounds.c
> +++ b/tools/testing/selftests/bpf/prog_tests/reg_bounds.c
> @@ -590,12 +590,7 @@ static void range_cond(enum num_t t, struct range x, struct range y,
>                 *newy = range(t, max_t(t, x.a, y.a), min_t(t, x.b, y.b));
>                 break;
>         case OP_NE:
> -               /* generic case, can't derive more information */
> -               *newx = range(t, x.a, x.b);
> -               *newy = range(t, y.a, y.b);
> -               break;
> -
> -               /* below extended logic is not supported by verifier just yet */
> +               /* below logic is supported by the verifier now */
>                 if (x.a == x.b && x.a == y.a) {
>                         /* X is a constant matching left side of Y */
>                         *newx = range(t, x.a, x.b);
> @@ -2101,6 +2096,19 @@ static struct subtest_case crafted_cases[] = {
>         {S32, S64, {(u32)(s32)S32_MIN, (u32)(s32)-255}, {(u32)(s32)-2, 0}},
>         {S32, S64, {0, 1}, {(u32)(s32)S32_MIN, (u32)(s32)S32_MIN}},
>         {S32, U32, {(u32)(s32)S32_MIN, (u32)(s32)S32_MIN}, {(u32)(s32)S32_MIN, (u32)(s32)S32_MIN}},
> +
> +       /* edge overlap testings for BPF_NE, skipped some cases that already
> +        * exist above.
> +        */
> +       {U64, U64, {0, U64_MAX}, {U64_MAX, U64_MAX}},
> +       {U64, U64, {0, U64_MAX}, {0, 0}},
> +       {S64, U64, {S64_MIN, 0}, {S64_MIN, S64_MIN}},
> +       {S64, U64, {S64_MIN, 0}, {0, 0}},
> +       {S64, U64, {S64_MIN, S64_MAX}, {S64_MAX, S64_MAX}},
> +       {U32, U32, {0, U32_MAX}, {0, 0}},

missing case where we compare against U32_MAX constant?

> +       {S32, U32, {(u32)(s32)S32_MIN, 0}, {0, 0}},
> +       {S32, U32, {(u32)(s32)S32_MIN, 0}, {(u32)(s32)S32_MIN, (u32)(s32)S32_MIN}},
> +       {S32, U32, {(u32)(s32)S32_MIN, S32_MAX}, {S32_MAX, S32_MAX}},
>  };
>
>  /* Go over crafted hard-coded cases. This is fast, so we do it as part of
> --
> 2.39.2
>
Menglong Dong Dec. 19, 2023, 2:22 a.m. UTC | #4 
On Tue, Dec 19, 2023 at 1:58 AM Andrii Nakryiko
<andrii.nakryiko@gmail.com> wrote:
>
> On Sun, Dec 17, 2023 at 5:18 AM Menglong Dong <menglong8.dong@gmail.com> wrote:
> >
> > The edge range checking for the registers is supported by the verifier
> > now, so we can activate the extended login in
> > tools/testing/selftests/bpf/prog_tests/reg_bounds.c/range_cond() to test
> > such logic.
> >
> > Besides, I added some cases to the "crafted_cases" array for this logic.
> > These cases are mainly used to test the edge of the src reg and dst reg.
> >
> > All reg bounds testings has passed in the SLOW_TESTS mode:
> >
> > $ export SLOW_TESTS=1 && ./test_progs -t reg_bounds -j
> > Summary: 65/18959832 PASSED, 0 SKIPPED, 0 FAILED
> >
> > Signed-off-by: Menglong Dong <menglong8.dong@gmail.com>
> > ---
> > v3:
> > - do some adjustment to the crafted cases that we added
> > v2:
> > - add some cases to the "crafted_cases"
> > ---
> >  .../selftests/bpf/prog_tests/reg_bounds.c     | 20 +++++++++++++------
> >  1 file changed, 14 insertions(+), 6 deletions(-)
> >
> > diff --git a/tools/testing/selftests/bpf/prog_tests/reg_bounds.c b/tools/testing/selftests/bpf/prog_tests/reg_bounds.c
> > index 0c9abd279e18..c9dc9fe73211 100644
> > --- a/tools/testing/selftests/bpf/prog_tests/reg_bounds.c
> > +++ b/tools/testing/selftests/bpf/prog_tests/reg_bounds.c
> > @@ -590,12 +590,7 @@ static void range_cond(enum num_t t, struct range x, struct range y,
> >                 *newy = range(t, max_t(t, x.a, y.a), min_t(t, x.b, y.b));
> >                 break;
> >         case OP_NE:
> > -               /* generic case, can't derive more information */
> > -               *newx = range(t, x.a, x.b);
> > -               *newy = range(t, y.a, y.b);
> > -               break;
> > -
> > -               /* below extended logic is not supported by verifier just yet */
> > +               /* below logic is supported by the verifier now */
> >                 if (x.a == x.b && x.a == y.a) {
> >                         /* X is a constant matching left side of Y */
> >                         *newx = range(t, x.a, x.b);
> > @@ -2101,6 +2096,19 @@ static struct subtest_case crafted_cases[] = {
> >         {S32, S64, {(u32)(s32)S32_MIN, (u32)(s32)-255}, {(u32)(s32)-2, 0}},
> >         {S32, S64, {0, 1}, {(u32)(s32)S32_MIN, (u32)(s32)S32_MIN}},
> >         {S32, U32, {(u32)(s32)S32_MIN, (u32)(s32)S32_MIN}, {(u32)(s32)S32_MIN, (u32)(s32)S32_MIN}},
> > +
> > +       /* edge overlap testings for BPF_NE, skipped some cases that already
> > +        * exist above.
> > +        */
> > +       {U64, U64, {0, U64_MAX}, {U64_MAX, U64_MAX}},
> > +       {U64, U64, {0, U64_MAX}, {0, 0}},
> > +       {S64, U64, {S64_MIN, 0}, {S64_MIN, S64_MIN}},
> > +       {S64, U64, {S64_MIN, 0}, {0, 0}},
> > +       {S64, U64, {S64_MIN, S64_MAX}, {S64_MAX, S64_MAX}},
> > +       {U32, U32, {0, U32_MAX}, {0, 0}},
>
> missing case where we compare against U32_MAX constant?
>

Hello,

There seems to already be one existing above:

{U32, S32, {0, U32_MAX}, {U32_MAX, U32_MAX}},

> > +       {S32, U32, {(u32)(s32)S32_MIN, 0}, {0, 0}},
> > +       {S32, U32, {(u32)(s32)S32_MIN, 0}, {(u32)(s32)S32_MIN, (u32)(s32)S32_MIN}},
> > +       {S32, U32, {(u32)(s32)S32_MIN, S32_MAX}, {S32_MAX, S32_MAX}},
> >  };
> >
> >  /* Go over crafted hard-coded cases. This is fast, so we do it as part of
> > --
> > 2.39.2
> >
Andrii Nakryiko Dec. 19, 2023, 5:52 a.m. UTC | #5 
On Mon, Dec 18, 2023 at 6:22 PM Menglong Dong <menglong8.dong@gmail.com> wrote:
>
> On Tue, Dec 19, 2023 at 1:58 AM Andrii Nakryiko
> <andrii.nakryiko@gmail.com> wrote:
> >
> > On Sun, Dec 17, 2023 at 5:18 AM Menglong Dong <menglong8.dong@gmail.com> wrote:
> > >
> > > The edge range checking for the registers is supported by the verifier
> > > now, so we can activate the extended login in
> > > tools/testing/selftests/bpf/prog_tests/reg_bounds.c/range_cond() to test
> > > such logic.
> > >
> > > Besides, I added some cases to the "crafted_cases" array for this logic.
> > > These cases are mainly used to test the edge of the src reg and dst reg.
> > >
> > > All reg bounds testings has passed in the SLOW_TESTS mode:
> > >
> > > $ export SLOW_TESTS=1 && ./test_progs -t reg_bounds -j
> > > Summary: 65/18959832 PASSED, 0 SKIPPED, 0 FAILED
> > >
> > > Signed-off-by: Menglong Dong <menglong8.dong@gmail.com>
> > > ---
> > > v3:
> > > - do some adjustment to the crafted cases that we added
> > > v2:
> > > - add some cases to the "crafted_cases"
> > > ---
> > >  .../selftests/bpf/prog_tests/reg_bounds.c     | 20 +++++++++++++------
> > >  1 file changed, 14 insertions(+), 6 deletions(-)
> > >
> > > diff --git a/tools/testing/selftests/bpf/prog_tests/reg_bounds.c b/tools/testing/selftests/bpf/prog_tests/reg_bounds.c
> > > index 0c9abd279e18..c9dc9fe73211 100644
> > > --- a/tools/testing/selftests/bpf/prog_tests/reg_bounds.c
> > > +++ b/tools/testing/selftests/bpf/prog_tests/reg_bounds.c
> > > @@ -590,12 +590,7 @@ static void range_cond(enum num_t t, struct range x, struct range y,
> > >                 *newy = range(t, max_t(t, x.a, y.a), min_t(t, x.b, y.b));
> > >                 break;
> > >         case OP_NE:
> > > -               /* generic case, can't derive more information */
> > > -               *newx = range(t, x.a, x.b);
> > > -               *newy = range(t, y.a, y.b);
> > > -               break;
> > > -
> > > -               /* below extended logic is not supported by verifier just yet */
> > > +               /* below logic is supported by the verifier now */
> > >                 if (x.a == x.b && x.a == y.a) {
> > >                         /* X is a constant matching left side of Y */
> > >                         *newx = range(t, x.a, x.b);
> > > @@ -2101,6 +2096,19 @@ static struct subtest_case crafted_cases[] = {
> > >         {S32, S64, {(u32)(s32)S32_MIN, (u32)(s32)-255}, {(u32)(s32)-2, 0}},
> > >         {S32, S64, {0, 1}, {(u32)(s32)S32_MIN, (u32)(s32)S32_MIN}},
> > >         {S32, U32, {(u32)(s32)S32_MIN, (u32)(s32)S32_MIN}, {(u32)(s32)S32_MIN, (u32)(s32)S32_MIN}},
> > > +
> > > +       /* edge overlap testings for BPF_NE, skipped some cases that already
> > > +        * exist above.
> > > +        */
> > > +       {U64, U64, {0, U64_MAX}, {U64_MAX, U64_MAX}},
> > > +       {U64, U64, {0, U64_MAX}, {0, 0}},
> > > +       {S64, U64, {S64_MIN, 0}, {S64_MIN, S64_MIN}},
> > > +       {S64, U64, {S64_MIN, 0}, {0, 0}},
> > > +       {S64, U64, {S64_MIN, S64_MAX}, {S64_MAX, S64_MAX}},
> > > +       {U32, U32, {0, U32_MAX}, {0, 0}},
> >
> > missing case where we compare against U32_MAX constant?
> >
>
> Hello,
>
> There seems to already be one existing above:
>
> {U32, S32, {0, U32_MAX}, {U32_MAX, U32_MAX}},
>

This one is doing S32 comparisons. For == and != it doesn't matter,
but it is a different use case. So I'd add U32, U32 case nevertheless.

> > > +       {S32, U32, {(u32)(s32)S32_MIN, 0}, {0, 0}},
> > > +       {S32, U32, {(u32)(s32)S32_MIN, 0}, {(u32)(s32)S32_MIN, (u32)(s32)S32_MIN}},
> > > +       {S32, U32, {(u32)(s32)S32_MIN, S32_MAX}, {S32_MAX, S32_MAX}},
> > >  };
> > >
> > >  /* Go over crafted hard-coded cases. This is fast, so we do it as part of
> > > --
> > > 2.39.2
> > >
diff mbox series

Patch

diff --git a/tools/testing/selftests/bpf/prog_tests/reg_bounds.c b/tools/testing/selftests/bpf/prog_tests/reg_bounds.c
index 0c9abd279e18..c9dc9fe73211 100644
--- a/tools/testing/selftests/bpf/prog_tests/reg_bounds.c
+++ b/tools/testing/selftests/bpf/prog_tests/reg_bounds.c
@@ -590,12 +590,7 @@  static void range_cond(enum num_t t, struct range x, struct range y,
 		*newy = range(t, max_t(t, x.a, y.a), min_t(t, x.b, y.b));
 		break;
 	case OP_NE:
-		/* generic case, can't derive more information */
-		*newx = range(t, x.a, x.b);
-		*newy = range(t, y.a, y.b);
-		break;
-
-		/* below extended logic is not supported by verifier just yet */
+		/* below logic is supported by the verifier now */
 		if (x.a == x.b && x.a == y.a) {
 			/* X is a constant matching left side of Y */
 			*newx = range(t, x.a, x.b);
@@ -2101,6 +2096,19 @@  static struct subtest_case crafted_cases[] = {
 	{S32, S64, {(u32)(s32)S32_MIN, (u32)(s32)-255}, {(u32)(s32)-2, 0}},
 	{S32, S64, {0, 1}, {(u32)(s32)S32_MIN, (u32)(s32)S32_MIN}},
 	{S32, U32, {(u32)(s32)S32_MIN, (u32)(s32)S32_MIN}, {(u32)(s32)S32_MIN, (u32)(s32)S32_MIN}},
+
+	/* edge overlap testings for BPF_NE, skipped some cases that already
+	 * exist above.
+	 */
+	{U64, U64, {0, U64_MAX}, {U64_MAX, U64_MAX}},
+	{U64, U64, {0, U64_MAX}, {0, 0}},
+	{S64, U64, {S64_MIN, 0}, {S64_MIN, S64_MIN}},
+	{S64, U64, {S64_MIN, 0}, {0, 0}},
+	{S64, U64, {S64_MIN, S64_MAX}, {S64_MAX, S64_MAX}},
+	{U32, U32, {0, U32_MAX}, {0, 0}},
+	{S32, U32, {(u32)(s32)S32_MIN, 0}, {0, 0}},
+	{S32, U32, {(u32)(s32)S32_MIN, 0}, {(u32)(s32)S32_MIN, (u32)(s32)S32_MIN}},
+	{S32, U32, {(u32)(s32)S32_MIN, S32_MAX}, {S32_MAX, S32_MAX}},
 };
 
 /* Go over crafted hard-coded cases. This is fast, so we do it as part of