gcc/ChangeLog:

2013-05-30  Bernd Schmidt  <bernds@codesourcery.com>
	    Zhenqiang Chen  <zhenqiang.chen@linaro.org>

	* config/arm/arm-protos.h: Add and update function protos.
	* config/arm/arm.c (use_simple_return_p): New added.
	(thumb2_expand_return): Check simple_return flag.
	* config/arm/arm.md: Add simple_return and conditional simple_return.
	* config/arm/iterators.md: Add iterator for return and simple_return.

gcc/testsuite/ChangeLog:
2013-05-30  Zhenqiang Chen  <zhenqiang.chen@linaro.org>

	* gcc.dg/shrink-wrap-alloca.c: New added.
	* gcc.dg/shrink-wrap-pretend.c: New added.
	* gcc.dg/shrink-wrap-sibcall.c: New added.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@199439 138bc75d-0d04-0410-961f-82ee72b054a4

3 files changed, 75 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/shrink-wrap-alloca.c b/gcc/testsuite/gcc.dg/shrink-wrap-alloca.c
new file mode 100644
index 00000000000..9e69ca16645
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/shrink-wrap-alloca.c
@@ -0,0 +1,13 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -g" } */
+
+extern int * alloca (int);
+
+int *p;
+
+void
+test (int a)
+{
+  if (a > 0)
+    p = alloca (4);
+}
diff --git a/gcc/testsuite/gcc.dg/shrink-wrap-pretend.c b/gcc/testsuite/gcc.dg/shrink-wrap-pretend.c
new file mode 100644
index 00000000000..6e20ca12e98
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/shrink-wrap-pretend.c
@@ -0,0 +1,36 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -g" } */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdarg.h>
+
+#define DEBUG_BUFFER_SIZE 80
+int unifi_debug = 5;
+
+void
+unifi_trace (void* ospriv, int level, const char *fmt, ...)
+{
+   static char s[DEBUG_BUFFER_SIZE];
+   va_list args;
+   unsigned int len;
+
+   if (!ospriv)
+     return;
+
+   if (unifi_debug >= level)
+     {
+       va_start (args, fmt);
+       len = vsnprintf (&(s)[0], (DEBUG_BUFFER_SIZE), fmt, args);
+       va_end (args);
+
+       if (len >= DEBUG_BUFFER_SIZE)
+	 {
+	   (s)[DEBUG_BUFFER_SIZE - 2] = '\n';
+	   (s)[DEBUG_BUFFER_SIZE - 1] = 0;
+	 }
+
+       printf ("%s", s);
+     }
+}
+
diff --git a/gcc/testsuite/gcc.dg/shrink-wrap-sibcall.c b/gcc/testsuite/gcc.dg/shrink-wrap-sibcall.c
new file mode 100644
index 00000000000..193bec2ce69
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/shrink-wrap-sibcall.c
@@ -0,0 +1,26 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -g" } */
+
+unsigned char a, b, d, f, g;
+
+int test (void);
+
+int
+baz (int c)
+{
+  if (c == 0) return test ();
+  if (b & 1)
+    {
+      g = 0;
+      int e = (a & 0x0f) - (g & 0x0f);
+
+      if (!a)  b |= 0x80;
+      a = e + test ();
+     f = g/5 + a*3879 + b *2985;
+    }
+   else
+   {
+     f = g + a*39879 + b *25;
+   }
+  return test ();
+}