expr.h (store_bit_field): Don't return a value.

gcc/
	* expr.h (store_bit_field): Don't return a value.
	* expmed.c (check_predicate_volatile_ok): New function.
	(store_bit_field_1): New function, extracted from store_bit_field.
	Take a fallback_p argument and return true if the operation succeeded.
	Only use store_fixed_bit_field if fallback_p.  Don't recompute
	mode_for_extraction; use op_mode instead.  Try forcing memories
	into registers if the insv expander fails.
	(store_bit_field): Use store_bit_field_1 with fallback_p true.
	Don't return a value.
	(convert_extracted_bit_field): New function, extracted from
	store_bit_field.
	(extract_bit_field_1): Likewise.  Take a fallback_p argument
	and return NULL if the operation succeeded.  Only use
	extract_fixed_bit_field if fallback_p.  Only calculate one
	extraction mode.  Combine code for extv and extzv.  Try forcing
	memories into registers if the ext(z)v expander fails.
	(extract_bit_field): Use extract_bit_field_1 with fallback_p true.

gcc/testsuite/
	* gcc.target/mips/ins-1.c: New test.

From-SVN: r126972

gcc/ChangeLog

+2007-07-27  Richard Sandiford  <richard@codesourcery.com>
+
+	* expr.h (store_bit_field): Don't return a value.
+	* expmed.c (check_predicate_volatile_ok): New function.
+	(store_bit_field_1): New function, extracted from store_bit_field.
+	Take a fallback_p argument and return true if the operation succeeded.
+	Only use store_fixed_bit_field if fallback_p.  Don't recompute
+	mode_for_extraction; use op_mode instead.  Try forcing memories
+	into registers if the insv expander fails.
+	(store_bit_field): Use store_bit_field_1 with fallback_p true.
+	Don't return a value.
+	(convert_extracted_bit_field): New function, extracted from
+	store_bit_field.
+	(extract_bit_field_1): Likewise.  Take a fallback_p argument
+	and return NULL if the operation succeeded.  Only use
+	extract_fixed_bit_field if fallback_p.  Only calculate one
+	extraction mode.  Combine code for extv and extzv.  Try forcing
+	memories into registers if the ext(z)v expander fails.
+	(extract_bit_field): Use extract_bit_field_1 with fallback_p true.
+
 2007-07-27  Richard Sandiford  <rsandifo@nildram.co.uk>
 
 	* df.h (df_mw_hardreg): Turn df_ref_type and df_ref_flags

gcc/expr.h

@@ -731,8 +731,8 @@ enum extraction_pattern { EP_insv, EP_extv, EP_extzv };
 extern enum machine_mode
 mode_for_extraction (enum extraction_pattern, int);
 
-extern rtx store_bit_field (rtx, unsigned HOST_WIDE_INT,
-			    unsigned HOST_WIDE_INT, enum machine_mode, rtx);
+extern void store_bit_field (rtx, unsigned HOST_WIDE_INT,
+			     unsigned HOST_WIDE_INT, enum machine_mode, rtx);
 extern rtx extract_bit_field (rtx, unsigned HOST_WIDE_INT,
 			      unsigned HOST_WIDE_INT, int, rtx,
 			      enum machine_mode, enum machine_mode);

gcc/testsuite/ChangeLog

+2007-07-27  Richard Sandiford  <richard@codesourcery.com>
+
+	* gcc.target/mips/ins-1.c: New test.
+
 2007-07-26  Nathan Froyd  <froydnj@codesourcery.com>
 
 	PR/19232

gcc/testsuite/gcc.target/mips/ins-1.c

+/* { dg-do compile } */
+/* { dg-mips-options "-O -march=mips32r2 -mno-mips16" } */
+/* { dg-final { scan-assembler "\tins\t" } } */
+
+struct
+{
+  unsigned int i : 2;
+  unsigned int j : 3;
+  unsigned int k : 4;
+} s;
+
+void
+foo (void)
+{
+  s.j = 1;
+}