re PR target/21623 (ICE in reload_cse_simplify_operands, at postreload.c:391)

	PR target/21623:

	* regclass.c (FORBIDDEN_INC_DEC_CLASSES): Remove
	SECONDARY_INPUT_RELOAD_CLASS and SECONDARY_OUTPUT_RELOAD_CLASS tests.
	(init_fake_stack_mems): Remove HAVE_SECONDARY_RELOADS test.
	(memory_move_secondary_cost, init_reg_autoinc): Remove
	SECONDARY_INPUT_RELOAD_CLASS / SECONDARY_OUTPUT_RELOAD_CLASS tests.
	Replace SECONDARY_{IN,OUT}PUT_RELOAD_CLASS use with
	secondary_reload_class call.
	(copy_cost): Likewise.  Add new parameter prev_sri.  Changed all
	callers.
	* reload.c (entire file): Remove HAVE_SECONDARY_RELOADS checks.
	(push_secondary_reload): Use secondary_reload target hook.
	(secondary_reload_class, scratch_reload_class): New functions.
	(push_reload): Remove SECONDARY_INPUT_RELOAD_CLASS and
	SECONDARY_OUTPUT_RELOAD_CLASS tests.  Replace
	SECONDARY_{IN,OUT}PUT_RELOAD_CLASS use with secondary_reload_class call.
	* reload.h (HAVE_SECONDARY_RELOADS): Don't define nor test.
	(secondary_reload_class, scratch_reload_class): Declare.
	* reload1.c: Include target.h.
	(reload_adjust_reg_for_temp): New function.
	(reload_adjust_reg_for_icode): Likewise.
	(choose_reload_regs): Remove SECONDARY_INPUT_RELOAD_CLASS test.
	Replace SECONDARY_INPUT_RELOAD_CLASS use with secondary_reload_class
	call.
	(emit_input_reload_insns): Likewise.  Rewrite secondary reload checks
	for inheritance.  Support case when both secondary & tertiary reloads
	are for intermediate registers.
	(emit_output_reload_insns): Replace SECONDARY_OUTPUT_RELOAD_CLASS use
        with secondary_reload_class call.  Support case when both secondary
	& tertiary reloads are for intermediate registers.
	* target-def.h (TARGET_SECONDARY_RELOAD): Provide default definition.
	(TARGET_INITIALIZER) Add TARGET_SECONDARY_RELOAD.
	* target.h (secondary_reload_info): New struct / typedef.
	(struct gcc_target): New member secondary_reload.
	* targhooks.c Include reload.h, optabs.h and recog.h.
	(default_secondary_reload): New function.
	* targhooks.h (default_secondary_reload): Declare.
	* doc/tm.texi: Document secondary_reload target hook.  Update
	description of SECONDARY_*RELOAD_CLASS and reload_{in,out}<mode>.
	* doc/md.texi: Likewise.

	* sh-protos.h (sh_secondary_reload): Declare.
	* sh.c (TARGET_SECONDARY_RELOAD): Override.
	(sh_secondary_reload): New function.
	* sh.h (SECONDARY_INOUT_RELOAD_CLASS): Don't define.
	(SECONDARY_OUTPUT_RELOAD_CLASS): Likewise.
	(SECONDARY_INPUT_RELOAD_CLASS): Likewise.
	(HAVE_SECONDARY_RELOADS): Define.
	* sh.md (reload_indf): Rename to:
	(reload_indf__frn).
	(reload_outdf): Rename to:
	(reload_outdf__RnFRm).
	(reload_insf): Rename to:
	(reload_insf__frn).
	(reload_insi): Rename to:
	(reload_insi__i_fpul).

From-SVN: r107468

1 files changed, 4 insertions, 4 deletions

diff --git a/gcc/doc/md.texi b/gcc/doc/md.texi
index 115de4a..54ad659 100644
--- a/gcc/doc/md.texi
+++ b/gcc/doc/md.texi
@@ -2920,10 +2920,7 @@ If a scratch register is required to move an object to or from memory,
 it can be allocated using @code{gen_reg_rtx} prior to life analysis.
 
 If there are cases which need scratch registers during or after reload,
-you must define @code{SECONDARY_INPUT_RELOAD_CLASS} and/or
-@code{SECONDARY_OUTPUT_RELOAD_CLASS} to detect them, and provide
-patterns @samp{reload_in@var{m}} or @samp{reload_out@var{m}} to handle
-them.  @xref{Register Classes}.
+you must provide an appropriate secondary_reload target hook.
 
 @findex no_new_pseudos
 The global variable @code{no_new_pseudos} can be used to determine if it
@@ -2953,6 +2950,9 @@ reload into a floating point register.
 @cindex @code{reload_out} instruction pattern
 @item @samp{reload_in@var{m}}
 @itemx @samp{reload_out@var{m}}
+These named patterns have been obsoleted by the target hook
+@code{secondary_reload}.
+
 Like @samp{mov@var{m}}, but used when a scratch register is required to
 move between operand 0 and operand 1.  Operand 2 describes the scratch
 register.  See the discussion of the @code{SECONDARY_RELOAD_CLASS}