On 06/09/2020 22:16, Luc Van Oostenryck wrote:
> Add a few more testcases to catch possible future regressions.
>
> Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@xxxxxxxxx>
> ---
> validation/optim/and-shl-or-and0.c | 15 +++++++++++++++
> validation/optim/lsr-or-and0.c | 22 ++++++++++++++++++++++
> validation/optim/shl-or-constant0.c | 12 ++++++++++++
> validation/optim/shl-or-constant1.c | 12 ++++++++++++
> validation/optim/shl-or-constant2.c | 12 ++++++++++++
> 5 files changed, 73 insertions(+)
> create mode 100644 validation/optim/and-shl-or-and0.c
> create mode 100644 validation/optim/lsr-or-and0.c
> create mode 100644 validation/optim/shl-or-constant0.c
> create mode 100644 validation/optim/shl-or-constant1.c
> create mode 100644 validation/optim/shl-or-constant2.c
>
> diff --git a/validation/optim/and-shl-or-and0.c b/validation/optim/and-shl-or-and0.c
> new file mode 100644
> index 000000000000..298dcb434fc7
> --- /dev/null
> +++ b/validation/optim/and-shl-or-and0.c
> @@ -0,0 +1,15 @@
> +// => (b << 12) & 0xfff00000
> +unsigned and_shl_or_and0(unsigned a, unsigned b)
> +{
> + return (((a & 0xfff00000) | b) << 12) & 0xfff00000;
> +}
> +
> +/*
> + * check-name: and-shl-or-and0
> + * check-command: test-linearize -Wno-decl $file
> + *
> + * check-output-ignore
> + * check-output-excludes: or\\.
> + * check-output-excludes: lsr\\.
Hmm, this still doesn't sit right - have you discovered the
reason for this?
> + * check-output-excludes: %arg1\\.
> + */
> diff --git a/validation/optim/lsr-or-and0.c b/validation/optim/lsr-or-and0.c
> new file mode 100644
> index 000000000000..fe3a2649eea2
> --- /dev/null
> +++ b/validation/optim/lsr-or-and0.c
> @@ -0,0 +1,22 @@
> +#define S 12
> +
> +// ((x & M) | b) >> S;
> +// -> ((x >> S) & (M >> S)) | (b >> S)
> +// but (M >> S) == 0
> +// => (b >> S)
yep, better.
ATB,
Ramsay Jones
> +
> +int lsr_or_and0a(unsigned int x, unsigned int b)
> +{
> + return ((x & 0x00000fff) | b) >> S;
> +}
> +
> +/*
> + * check-name: lsr-or-and0
> + * check-command: test-linearize -Wno-decl $file
> + *
> + * check-output-ignore
> + * check-output-pattern(1): lsr\\.
> + * check-output-excludes: %arg1\\.
> + * check-output-excludes: and\\.
> + * check-output-excludes: or\\.
> + */
> diff --git a/validation/optim/shl-or-constant0.c b/validation/optim/shl-or-constant0.c
> new file mode 100644
> index 000000000000..25347b4b3b20
> --- /dev/null
> +++ b/validation/optim/shl-or-constant0.c
> @@ -0,0 +1,12 @@
> +unsigned shl_or_constant0(unsigned a)
> +{
> + return (a | 0xfff00000) << 12;
> +}
> +
> +/*
> + * check-name: shl-or-constant0
> + * check-command: test-linearize -Wno-decl $file
> + *
> + * check-output-ignore
> + * check-output-excludes: or\\.
> + */
> diff --git a/validation/optim/shl-or-constant1.c b/validation/optim/shl-or-constant1.c
> new file mode 100644
> index 000000000000..cd3ea8bb011b
> --- /dev/null
> +++ b/validation/optim/shl-or-constant1.c
> @@ -0,0 +1,12 @@
> +unsigned shl_or_constant1(unsigned a)
> +{
> + return (a | 0x000fffff) << 12;
> +}
> +
> +/*
> + * check-name: shl-or-constant1
> + * check-command: test-linearize -Wno-decl $file
> + *
> + * check-output-ignore
> + * check-output-contains: ret\\..*\\$0xfffff000
> + */
> diff --git a/validation/optim/shl-or-constant2.c b/validation/optim/shl-or-constant2.c
> new file mode 100644
> index 000000000000..d4618eb1bab8
> --- /dev/null
> +++ b/validation/optim/shl-or-constant2.c
> @@ -0,0 +1,12 @@
> +unsigned shl_or_constant2(unsigned a)
> +{
> + return (a | 0x00ffff0f) << 12;
> +}
> +
> +/*
> + * check-name: shl-or-constant2
> + * check-command: test-linearize -Wno-decl $file
> + *
> + * check-output-ignore
> + * check-output-contains: or\\..*\\$0xfff0f
> + */
>
