re PR middle-end/64744 (ARM: gcc internal compiler error: in store_field, at expr.c:6659)

	PR middle-end/64744
	PR middle-end/48470
	PR middle-end/43404
	* cfgexpand.c (expand_one_var): Add check if stack is going to
	be used in naked function.
	* expr.c (expand_expr_addr_expr_1): Remove excess checking
	whether expression should not reside in MEM.
	* function.c (use_register_for_decl): Do not use registers for
	non-register things (volatile, float, BLKMode) in naked functions.

	PR middle-end/64744
	PR middle-end/48470
	PR middle-end/43404
	* gcc.target/arm/pr43404.c : New testcase.
	* gcc.target/arm/pr48470.c : New testcase.
	* gcc.target/arm/pr64744-1.c : New testcase.
	* gcc.target/arm/pr64744-2.c : New testcase.

From-SVN: r226528

5 files changed, 84 insertions, 0 deletions

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 44d7eb9..1fe025b 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,13 @@
+2015-08-03  Alexander Basov <coohpt@gmail.com>
+
+	PR middle-end/64744
+	PR middle-end/48470
+	PR middle-end/43404
+	* gcc.target/arm/pr43404.c : New testcase.
+	* gcc.target/arm/pr48470.c : New testcase.
+	* gcc.target/arm/pr64744-1.c : New testcase.
+	* gcc.target/arm/pr64744-2.c : New testcase.
+
 2015-08-03  H.J. Lu  <hongjiu.lu@intel.com>
 
 	PR tree-optimization/67077
diff --git a/gcc/testsuite/gcc.target/arm/pr43404.c b/gcc/testsuite/gcc.target/arm/pr43404.c
new file mode 100644
index 0000000..4f2291d
--- /dev/null
+++ b/gcc/testsuite/gcc.target/arm/pr43404.c
@@ -0,0 +1,10 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target naked_functions } */
+/* { dg-options "-O0" } */
+
+__attribute__ ((naked))
+void __data_abort(void)
+{
+  long foo; /* { dg-error "cannot allocate stack for variable" } */
+  long* bar = &foo;
+}
diff --git a/gcc/testsuite/gcc.target/arm/pr48470.c b/gcc/testsuite/gcc.target/arm/pr48470.c
new file mode 100644
index 0000000..20343e7
--- /dev/null
+++ b/gcc/testsuite/gcc.target/arm/pr48470.c
@@ -0,0 +1,11 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target naked_functions } */
+/* { dg-options "-O0" } */
+
+extern void g(int *x);
+
+void __attribute__((naked)) f(void)
+{
+    int x = 0; /* { dg-error "cannot allocate stack for variable" } */
+    g(&x);
+}
diff --git a/gcc/testsuite/gcc.target/arm/pr64744-1.c b/gcc/testsuite/gcc.target/arm/pr64744-1.c
new file mode 100644
index 0000000..4029303
--- /dev/null
+++ b/gcc/testsuite/gcc.target/arm/pr64744-1.c
@@ -0,0 +1,40 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target naked_functions } */
+/* { dg-options "-O0" } */
+
+__attribute__((naked))
+void foo1 ()
+{
+  int aa = 0;
+  int ab = {0};
+}
+
+__attribute__((naked))
+void foo2() {
+  char aa [ ] = {}; /* { dg-error "cannot allocate stack for variable" } */
+  char ab [1] = {};
+  char ac [2] = {}; /* { dg-error "cannot allocate stack for variable" } */
+  char ad [3] = {}; /* { dg-error "cannot allocate stack for variable" } */
+}
+
+__attribute__((naked))
+void foo3() {
+  char aa [1] = {0};
+  char ab [2] = {0}; /* { dg-error "cannot allocate stack for variable" } */
+  char ac [3] = {0}; /* { dg-error "cannot allocate stack for variable" } */
+  char ad [4] = {0}; /* { dg-error "cannot allocate stack for variable" } */
+}
+
+__attribute__((naked))
+void foo4() {
+  char aa [2] = {0,0}; /* { dg-error "cannot allocate stack for variable" } */
+}
+__attribute__((naked))
+void foo5() {
+  char aa [3] = {0,0,0}; /* { dg-error "cannot allocate stack for variable" } */
+}
+
+__attribute__((naked))
+void foo6() {
+  char aa [4] = {0,0,0,0}; /* { dg-error "cannot allocate stack for variable" } */
+}
diff --git a/gcc/testsuite/gcc.target/arm/pr64744-2.c b/gcc/testsuite/gcc.target/arm/pr64744-2.c
new file mode 100644
index 0000000..d33ea7b
--- /dev/null
+++ b/gcc/testsuite/gcc.target/arm/pr64744-2.c
@@ -0,0 +1,13 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target naked_functions } */
+/* { dg-options "-O0" } */
+
+struct s {
+  char a;
+    int b;
+};
+
+__attribute__((naked))
+void foo () {
+  struct s x = {}; /* { dg-error "cannot allocate stack for variable" } */
+}