re PR target/53120 (ICE exposing strict_low_part / in/out operand thinko -fno-tree-sra)

	PR target/53120
	* gcc.dg/torture/pr53120.c: New test.

From-SVN: r186844

gcc/testsuite/ChangeLog

+2012-04-26  Hans-Peter Nilsson  <hp@axis.com>
+
+	PR target/53120
+	* gcc.dg/torture/pr53120.c: New test.
+
 2012-04-25  Jakub Jelinek  <jakub@redhat.com>
 
 	PR middle-end/52979

gcc/testsuite/gcc.dg/torture/pr53120.c

+/* { dg-do compile } */
+/* { dg-options "-fno-tree-sra" } */
+typedef struct {
+  unsigned int en : 1;
+  unsigned int bit_order : 1;
+  unsigned int scl_io : 1;
+  unsigned int scl_inv : 1;
+  unsigned int sda0_io : 1;
+  unsigned int sda0_idle : 1;
+  unsigned int sda1_io : 1;
+  unsigned int sda1_idle : 1;
+  unsigned int sda2_io : 1;
+  unsigned int sda2_idle : 1;
+  unsigned int sda3_io : 1;
+  unsigned int sda3_idle : 1;
+  unsigned int sda_sel : 2;
+  unsigned int sen_idle : 1;
+  unsigned int sen_inv : 1;
+  unsigned int sen_sel : 2;
+  unsigned int dummy1 : 14;
+} reg_gio_rw_i2c1_cfg;
+
+typedef struct {
+  unsigned int data0 : 8;
+  unsigned int data1 : 8;
+  unsigned int data2 : 8;
+  unsigned int data3 : 8;
+} reg_gio_rw_i2c1_data;
+
+typedef struct {
+  unsigned int trf_bits : 6;
+  unsigned int switch_dir : 6;
+  unsigned int extra_start : 3;
+  unsigned int early_end : 1;
+  unsigned int start_stop : 1;
+  unsigned int ack_dir0 : 1;
+  unsigned int ack_dir1 : 1;
+  unsigned int ack_dir2 : 1;
+  unsigned int ack_dir3 : 1;
+  unsigned int ack_dir4 : 1;
+  unsigned int ack_dir5 : 1;
+  unsigned int ack_bit : 1;
+  unsigned int start_bit : 1;
+  unsigned int freq : 2;
+  unsigned int dummy1 : 5;
+} reg_gio_rw_i2c1_ctrl;
+
+extern reg_gio_rw_i2c1_cfg reg_gio;
+extern reg_gio_rw_i2c1_data reg_data;
+extern int reg_start;
+extern reg_gio_rw_i2c1_ctrl reg_ctrl;
+
+extern void foobar(void);
+extern void foo(int);
+extern void frob(unsigned int);
+extern void bar(int);
+extern void baz(void);
+
+unsigned int f(int *devspec, unsigned int addr)
+{
+ reg_gio_rw_i2c1_ctrl ctrl = {0};
+ reg_gio_rw_i2c1_data data = {0};
+
+ foobar();
+
+ static int first = 1;
+
+ if (first) {
+  reg_gio_rw_i2c1_cfg cfg = {0};
+  first = 0;
+
+  foo(1);
+  cfg.sda0_idle = 1;
+  cfg.sda0_io = 0;
+  cfg.scl_inv = 0;
+  cfg.scl_io = 0;
+  cfg.bit_order = 1;
+  cfg.sda_sel = 0;
+  cfg.sen_sel = 0;
+  cfg.en = 1;
+  reg_gio = cfg;
+ }
+
+ ctrl.freq = 1;
+ ctrl.start_bit = 0;
+ ctrl.ack_bit = 1;
+ ctrl.ack_dir0 = 0;
+ ctrl.ack_dir1 = 0;
+ ctrl.ack_dir2 = 0;
+ ctrl.ack_dir3 = 1;
+ ctrl.ack_dir4 = 0;
+ ctrl.ack_dir5 = 0;
+ ctrl.start_stop = 1;
+ ctrl.early_end = 0;
+ ctrl.extra_start = 2;
+ ctrl.switch_dir = 8*3;
+ ctrl.trf_bits = 8*4;
+ reg_ctrl = ctrl;
+ frob(0xac);
+ data.data0 = devspec[1] & 192;
+ data.data1 = addr;
+ data.data2 = devspec[1] | 0x01;
+ reg_data = data;
+ reg_start = 1;
+ bar(100);
+ data = reg_data;
+ baz();
+
+ return data.data3;
+}