From: H.J. Lu <hongjiu.lu@intel.com>
Date: Thu, 9 Jul 2015 09:26:47 +0000 (+0000)
Subject: Check int_size_in_bytes in ix86_return_in_memory
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=661c8707bf0629bb1b69efa14dfc3d8e89e61706;p=gcc.git

Check int_size_in_bytes in ix86_return_in_memory

ix86_return_in_memory should check negative return from int_size_in_bytes,
similar to other ports.

gcc/

	PR target/66817
	* config/i386/i386.c (ix86_return_in_memory): Return true
	if int_size_in_bytes returns negative for IA MCU.

gcc/testsuite/

	PR target/66817
	* gcc.target/i386/pr66817.c: New test.

From-SVN: r225605
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index a0d835e1efd..78cc6f94553 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2015-07-09  H.J. Lu  <hongjiu.lu@intel.com>
+
+	PR target/66817
+	* config/i386/i386.c (ix86_return_in_memory): Return true
+	if int_size_in_bytes returns negative for IA MCU.
+
 2015-07-09  Marek Polacek  <polacek@redhat.com>
 
 	PR tree-optimization/66718
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index 55a32acc581..54ee6f3d4fd 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -8682,7 +8682,7 @@ ix86_return_in_memory (const_tree type, const_tree fntype ATTRIBUTE_UNUSED)
       /* Intel MCU psABI returns scalars and aggregates no larger than 8
 	 bytes in registers.  */
       if (TARGET_IAMCU)
-	return VECTOR_MODE_P (mode) || size > 8;
+	return VECTOR_MODE_P (mode) || size < 0 || size > 8;
 
       if (mode == BLKmode)
 	return true;
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 661ccb52de1..42b62031623 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2015-07-09  H.J. Lu  <hongjiu.lu@intel.com>
+
+	PR target/66817
+	* gcc.target/i386/pr66817.c: New test.
+
 2015-07-09  Marek Polacek  <polacek@redhat.com>
 
 	PR tree-optimization/66718
diff --git a/gcc/testsuite/gcc.target/i386/pr66817.c b/gcc/testsuite/gcc.target/i386/pr66817.c
new file mode 100644
index 00000000000..7ec18b74d1c
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr66817.c
@@ -0,0 +1,27 @@
+/* { dg-do compile { target ia32 } } */
+/* { dg-options "-O2 -mno-sse -mno-mmx -miamcu" } */
+
+extern void abort (void);
+int
+main (int argc, char **argv)
+{
+  int size = 10;
+  typedef struct
+    {
+      char val[size];
+    }
+  block;
+  block a, b;
+  block __attribute__((noinline))
+  retframe_block ()
+    {
+      return *(block *) &b;
+    }
+  b.val[0] = 1;
+  b.val[9] = 2;
+  a=retframe_block ();
+  if (a.val[0] != 1
+      || a.val[9] != 2)
+    abort ();
+  return 0;
+}