[PATCH 2/2] Add test cases for noreorder

[Andi Kleen]

From: Andi Kleen <a...@linux.intel.com>

Add some simple test cases for noreorder behaving like
-fno-toplevel-reorder and -fno-toplevel-reorder still working.
Unfortunately there's no easy way to check for output order in DG,
so we just check for existence.

gcc/testsuite/:

2014-09-15  Andi Kleen  <a...@linux.intel.com>

        * gcc.dg/noreorder.c: New test.
        * gcc.dg/noreorder2.c: New test.
        * gcc.dg/noreorder3.c: New test.
        * gcc.dg/noreorder4.c: New test.
---
 gcc/testsuite/gcc.dg/noreorder.c  | 38 ++++++++++++++++++++++++++++++++++++++
 gcc/testsuite/gcc.dg/noreorder2.c | 11 +++++++++++
 gcc/testsuite/gcc.dg/noreorder3.c | 10 ++++++++++
 gcc/testsuite/gcc.dg/noreorder4.c |  5 +++++
 4 files changed, 64 insertions(+)
 create mode 100644 gcc/testsuite/gcc.dg/noreorder.c
 create mode 100644 gcc/testsuite/gcc.dg/noreorder2.c
 create mode 100644 gcc/testsuite/gcc.dg/noreorder3.c
 create mode 100644 gcc/testsuite/gcc.dg/noreorder4.c

diff --git a/gcc/testsuite/gcc.dg/noreorder.c b/gcc/testsuite/gcc.dg/noreorder.c
new file mode 100644
index 0000000..7d40a29
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/noreorder.c
@@ -0,0 +1,38 @@
+/* { dg-do compile } */
+/* { dg-options "-O2" } */
+
+/* The function order in this file is opposite from what the cgraph
+   topological sort would output. So we can check the order is preserved. */
+
+extern void f2(int);
+static int func2(void);
+
+#ifndef NOREORDER
+#define NOREORDER __attribute__((no_reorder))
+#endif
+
+asm("firstasm");
+
+NOREORDER __attribute__((noinline)) int bozo(void)
+{
+  f2(3);
+  func2();
+}
+
+asm("jukjuk");
+
+NOREORDER __attribute__((noinline)) static int func1(void)
+{
+  f2(1);
+}
+
+asm("barbar");
+
+NOREORDER __attribute__((noinline)) static int func2(void)
+{
+  func1();
+}
+
+asm("lastasm");
+
+/* { dg-final { scan-assembler 
"firstasm.*bozo.*jukjuk.*func1.*barbar.*func2.*lastasm" } } */
diff --git a/gcc/testsuite/gcc.dg/noreorder2.c 
b/gcc/testsuite/gcc.dg/noreorder2.c
new file mode 100644
index 0000000..558361b
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/noreorder2.c
@@ -0,0 +1,11 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -fno-toplevel-reorder" } */
+
+__attribute__((no_reorder)) int foobar;
+
+static int barbar;
+int bozo;
+
+/* { dg-final { scan-assembler "foobar" } } */
+/* { dg-final { scan-assembler "bozo" } } */
+/* { dg-final { scan-assembler "barbar" } } */
diff --git a/gcc/testsuite/gcc.dg/noreorder3.c 
b/gcc/testsuite/gcc.dg/noreorder3.c
new file mode 100644
index 0000000..a0b637f
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/noreorder3.c
@@ -0,0 +1,10 @@
+/* { dg-do compile } */
+/* { dg-options "-O2" } */
+
+__attribute__((no_reorder)) int foobar;
+static int barbar;
+int bozo;
+
+/* { dg-final { scan-assembler "foobar" } } */
+/* { dg-final { scan-assembler "bozo" } } */
+/* { dg-final { scan-assembler-not "barbar" } } */
diff --git a/gcc/testsuite/gcc.dg/noreorder4.c 
b/gcc/testsuite/gcc.dg/noreorder4.c
new file mode 100644
index 0000000..632fc33
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/noreorder4.c
@@ -0,0 +1,5 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -fno-toplevel-reorder" } */
+#define NOREORDER
+#include "noreorder.c"
+/* { dg-final { scan-assembler "bozo.*jukjuk.*func1.*barbar.*func2" } } */
-- 
2.1.0