[PATCH 2/3] add more testcases for AND/OR simplification

[Luc Van Oostenryck <luc.vanoostenryck@gmail.com>]

Add a few testcases showing the effectiveness of these
simplifications and to catch possible future regressions.

Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
---
 validation/optim/and-lsr-or-shl0.c | 12 ++++++++++++
 validation/optim/and-lsr-or-shl1.c | 12 ++++++++++++
 validation/optim/and-shl-or-lsr0.c | 13 +++++++++++++
 validation/optim/lsr-or-lsr0.c     | 20 ++++++++++++++++++++
 validation/optim/trunc-or-shl0.c   | 19 +++++++++++++++++++
 5 files changed, 76 insertions(+)
 create mode 100644 validation/optim/and-lsr-or-shl0.c
 create mode 100644 validation/optim/and-lsr-or-shl1.c
 create mode 100644 validation/optim/and-shl-or-lsr0.c
 create mode 100644 validation/optim/lsr-or-lsr0.c
 create mode 100644 validation/optim/trunc-or-shl0.c

diff --git a/validation/optim/and-lsr-or-shl0.c b/validation/optim/and-lsr-or-shl0.c
new file mode 100644
index 000000000000..e2a517ab65c4
--- /dev/null
+++ b/validation/optim/and-lsr-or-shl0.c
@@ -0,0 +1,12 @@
+unsigned int and_lsr_or_shl0(unsigned int a, unsigned int b)
+{
+	return ((a | b << 12) >> 12) & 0xfff00000;
+}
+
+/*
+ * check-name: and-lsr-or-shl0
+ * check-command: test-linearize -Wno-decl $file
+ * check-known-to-fail
+ *
+ * check-output-excludes: shl\\.
+ */
diff --git a/validation/optim/and-lsr-or-shl1.c b/validation/optim/and-lsr-or-shl1.c
new file mode 100644
index 000000000000..6f2d05a0bfdd
--- /dev/null
+++ b/validation/optim/and-lsr-or-shl1.c
@@ -0,0 +1,12 @@
+unsigned int and_lsr_or_shl1(unsigned int a, unsigned int b)
+{
+	return ((a | b << 12) >> 12) & 0x000fffff;
+}
+
+/*
+ * check-name: and-lsr-or-shl1
+ * check-command: test-linearize -Wno-decl $file
+ * check-known-to-fail
+ *
+ * check-output-excludes: shl\\.
+ */
diff --git a/validation/optim/and-shl-or-lsr0.c b/validation/optim/and-shl-or-lsr0.c
new file mode 100644
index 000000000000..f2a7cc631258
--- /dev/null
+++ b/validation/optim/and-shl-or-lsr0.c
@@ -0,0 +1,13 @@
+unsigned and_shl_or_lsr0(unsigned a, unsigned b)
+{
+	return ((a | (b >> 12)) << 12) & 0xfff00000;
+}
+
+/*
+ * check-name: and-shl-or-lsr0
+ * check-command: test-linearize -Wno-decl $file
+ * check-known-to-fail
+ *
+ * check-output-ignore
+ * check-output-excludes: or\\.
+ */
diff --git a/validation/optim/lsr-or-lsr0.c b/validation/optim/lsr-or-lsr0.c
new file mode 100644
index 000000000000..a1687ec21ff0
--- /dev/null
+++ b/validation/optim/lsr-or-lsr0.c
@@ -0,0 +1,20 @@
+#define	S	12
+
+//	((x >> S') | y) >> S;
+// ->	((x >> S >> S) | (y >> S)
+
+int lsr_or_lsr0(unsigned int x, unsigned int b)
+{
+	return ((x >> (32 - S)) | b) >> S;
+}
+
+/*
+ * check-name: lsr-or-lsr0
+ * check-command: test-linearize -Wno-decl $file
+ * check-known-to-fail
+ *
+ * check-output-ignore
+ * check-output-pattern(1): lsr\\.
+ * check-output-excludes: and\\.
+ * check-output-excludes: or\\.
+ */
diff --git a/validation/optim/trunc-or-shl0.c b/validation/optim/trunc-or-shl0.c
new file mode 100644
index 000000000000..4d85a6bd4ec4
--- /dev/null
+++ b/validation/optim/trunc-or-shl0.c
@@ -0,0 +1,19 @@
+char trunc_or_shl0a(unsigned a, unsigned b)
+{
+	return (a << 8) | b;
+}
+
+char trunc_or_shl0b(unsigned a, unsigned b)
+{
+	return a | (b << 8);
+}
+
+/*
+ * check-name: trunc-or-shl0
+ * check-command: test-linearize -Wno-decl $file
+ * check-known-to-fail
+ *
+ * check-output-ignore
+ * check-output-excludes: or\\.
+ * check-output-excludes: shl\\.
+ */
-- 
2.28.0