Commit: MSP430: Fix some gcc testsuite failures

[Nick Clifton <nickc at redhat dot com>]

Hi Guys,

  I am checking in the patch below (to both the mainline and the 4.9
  branch) in order to fix some unexpected failures in the gcc testsuite
  with the msp430-elf toolchain.  With this patch in place the following
  tests now pass:

    gcc.c-torture/execute/builtins/memcpy-chk.c
    gcc.c-torture/execute/builtins/memmove.c
    gcc.c-torture/execute/builtins/mempcpy-chk.c
    gcc.c-torture/execute/builtins/mempcpy.c
    gcc.c-torture/execute/builtins/strcpy-chk.c
    gcc.c-torture/execute/builtins/strcpy.c
    gcc.c-torture/execute/20020412-1.c
    gcc.c-torture/execute/20050826-2.c
    gcc.c-torture/execute/20050826-2.c
    gcc.c-torture/execute/920908-1.c
    gcc.c-torture/execute/pr56205.c
    gcc.c-torture/execute/strct-varg-1.c
    gcc.c-torture/execute/va-arg-22.c

  No regressions are introduced by the patch.

  The patch fixes two bugs - the first was that the zero_extendpsisi2
  pattern was confusing gcc about the number of hard registers needed to
  hold an SImode value.

  The second fixes a problem with expanding va_arg when pointers are not
  a multiple of the word size.

Cheers
  Nick

gcc/ChangeLog
2014-05-20  Nick Clifton  <nickc@redhat.com>

	* config/msp430/msp430.c (TARGET_GIMPLIFY_VA_ARG_EXPR): Define.
	(msp430_gimplify_va_arg_expr): New function.
	(msp430_print_operand): Handle (CONST (ZERO_EXTRACT)).

	* config/msp430/msp430.md (zero_extendpsisi2): Use + constraint on
	operand 0 in order to prevent confusion about the number of
	registers involved.

Attachment: msp430.patch.xz
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