sparc.h (PROMOTE_FOR_CALL_ONLY): Define.
* config/sparc/sparc.h (PROMOTE_FOR_CALL_ONLY): Define. * calls.c (precompute_arguments): Make sure initial_value contains value pseudo which CSE expects. * cse.c (struct set): New entry orig_src. (cse_insn): Set it early on entry, use it for libcall EQUIV note replacement. From-SVN: r30846
This commit is contained in:
Jakub Jelinek
David S. Miller
parent
1684f87473
commit
47841d1be3
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@ -17,6 +17,14 @@ Thu Dec 9 11:36:24 MET 1999 Jan Hubicka <hubicka@freesoft.cz>
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* genmultilib: Accept | as alternative separator within a set in
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MULTILIB_OPTIONS.
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* config/sparc/sparc.h (PROMOTE_FOR_CALL_ONLY): Define.
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* calls.c (precompute_arguments): Make sure initial_value contains
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value pseudo which CSE expects.
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* cse.c (struct set): New entry orig_src.
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(cse_insn): Set it early on entry, use it for libcall EQUIV note
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replacement.
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Wed Dec 8 22:24:15 1999 Richard Henderson <rth@cygnus.com>
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* flow.c (count_basic_blocks): Don't add (use (const_int 0)) insns.
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29
gcc/calls.c
29
gcc/calls.c
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@ -1267,7 +1267,7 @@ precompute_arguments (is_const, must_preallocate, num_actuals, args, args_size)
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push_temp_slots ();
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args[i].initial_value = args[i].value
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args[i].value
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= expand_expr (args[i].tree_value, NULL_RTX, VOIDmode, 0);
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preserve_temp_slots (args[i].value);
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@ -1278,13 +1278,30 @@ precompute_arguments (is_const, must_preallocate, num_actuals, args, args_size)
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emit_queue ();
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args[i].initial_value = args[i].value
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= protect_from_queue (args[i].initial_value, 0);
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= protect_from_queue (args[i].value, 0);
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if (TYPE_MODE (TREE_TYPE (args[i].tree_value)) != args[i].mode)
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args[i].value
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= convert_modes (args[i].mode,
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TYPE_MODE (TREE_TYPE (args[i].tree_value)),
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args[i].value, args[i].unsignedp);
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{
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args[i].value
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= convert_modes (args[i].mode,
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TYPE_MODE (TREE_TYPE (args[i].tree_value)),
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args[i].value, args[i].unsignedp);
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#ifdef PROMOTE_FOR_CALL_ONLY
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/* CSE will replace this only if it contains args[i].value
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pseudo, so convert it down to the declared mode using
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a SUBREG. */
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if (GET_CODE (args[i].value) == REG
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&& GET_MODE_CLASS (args[i].mode) == MODE_INT)
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{
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args[i].initial_value
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= gen_rtx_SUBREG (TYPE_MODE (TREE_TYPE (args[i].tree_value)),
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args[i].value, 0);
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SUBREG_PROMOTED_VAR_P (args[i].initial_value) = 1;
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SUBREG_PROMOTED_UNSIGNED_P (args[i].initial_value)
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= args[i].unsignedp;
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}
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#endif
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}
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}
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}
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@ -777,6 +777,18 @@ if (TARGET_ARCH64 \
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for this value. */
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#define PROMOTE_FUNCTION_RETURN
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/* Define this macro if the promotion described by PROMOTE_MODE
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should _only_ be performed for outgoing function arguments or
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function return values, as specified by PROMOTE_FUNCTION_ARGS
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and PROMOTE_FUNCTION_RETURN, respectively. */
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/* This is only needed for TARGET_ARCH64, but since PROMOTE_MODE is a no-op
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for TARGET_ARCH32 this is ok. Otherwise we'd need to add a runtime test
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for this value. For TARGET_ARCH64 we need it, as we don't have instructions
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for arithmetic operations which do zero/sign extension at the same time,
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so without this we end up with a srl/sra after every assignment to an
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user variable, which means very very bad code. */
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#define PROMOTE_FOR_CALL_ONLY
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/* Allocation boundary (in *bits*) for storing arguments in argument list. */
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#define PARM_BOUNDARY (TARGET_ARCH64 ? 64 : 32)
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17
gcc/cse.c
17
gcc/cse.c
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@ -4426,6 +4426,8 @@ struct set
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enum machine_mode mode;
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/* A constant equivalent for SET_SRC, if any. */
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rtx src_const;
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/* Original SET_SRC value used for libcall notes. */
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rtx orig_src;
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/* Hash value of constant equivalent for SET_SRC. */
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unsigned src_const_hash;
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/* Table entry for constant equivalent for SET_SRC, if any. */
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@ -4624,6 +4626,7 @@ cse_insn (insn, libcall_insn)
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rtx new = canon_reg (src, insn);
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int insn_code;
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sets[i].orig_src = src;
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if ((GET_CODE (new) == REG && GET_CODE (src) == REG
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&& ((REGNO (new) < FIRST_PSEUDO_REGISTER)
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!= (REGNO (src) < FIRST_PSEUDO_REGISTER)))
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@ -5123,7 +5126,7 @@ cse_insn (insn, libcall_insn)
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the current contents will be tested and will always be valid. */
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while (1)
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{
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rtx trial, old_src;
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rtx trial;
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/* Skip invalid entries. */
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while (elt && GET_CODE (elt->exp) != REG
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@ -5189,10 +5192,6 @@ cse_insn (insn, libcall_insn)
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insert the substitution here and we will delete and re-emit
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the insn later. */
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/* Keep track of the original SET_SRC so that we can fix notes
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on libcall instructions. */
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old_src = SET_SRC (sets[i].rtl);
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if (n_sets == 1 && dest == pc_rtx
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&& (trial == pc_rtx
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|| (GET_CODE (trial) == LABEL_REF
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@ -5221,10 +5220,10 @@ cse_insn (insn, libcall_insn)
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need to make the same substitution in any notes attached
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to the RETVAL insn. */
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if (libcall_insn
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&& (GET_CODE (old_src) == REG
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|| GET_CODE (old_src) == SUBREG
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|| GET_CODE (old_src) == MEM))
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replace_rtx (REG_NOTES (libcall_insn), old_src,
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&& (GET_CODE (sets[i].orig_src) == REG
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|| GET_CODE (sets[i].orig_src) == SUBREG
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|| GET_CODE (sets[i].orig_src) == MEM))
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replace_rtx (REG_NOTES (libcall_insn), sets[i].orig_src,
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canon_reg (SET_SRC (sets[i].rtl), insn));
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/* The result of apply_change_group can be ignored; see
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