From: Segher Boessenkool Date: Tue, 7 May 2019 22:25:05 +0000 (+0200) Subject: rs6000: Remove reload leftovers X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=76ddb9ebd9de3bc35f69f93a3e3769589d1b7d35;p=gcc.git rs6000: Remove reload leftovers There are a few things left in the rs6000 port that are unused now that we do not support old reload anymore. This removes those. * config/rs6000/rs6000-protos.h (rs6000_legitimize_reload_address_ptr): Delete declaration. * config/rs6000/rs6000.c (rs6000_legitimize_reload_address): Delete. (rs6000_debug_legitimize_reload_address): Delete. (rs6000_legitimize_reload_address_ptr): Delete. (rs6000_option_override_internal): Adjust. (mem_operand_gpr): Adjust comment. (legitimate_lo_sum_address_p): Ditto. (rs6000_legitimize_reload_address): Delete. (rs6000_debug_legitimize_reload_address): Delete. * config/rs6000/rs6000.h (LEGITIMIZE_RELOAD_ADDRESS): Delete. From-SVN: r270983 --- diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 9571c3b62b6..4a98ec84c7b 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,17 @@ +2019-05-07 Segher Boessenkool + + * config/rs6000/rs6000-protos.h (rs6000_legitimize_reload_address_ptr): + Delete declaration. + * config/rs6000/rs6000.c (rs6000_legitimize_reload_address): Delete. + (rs6000_debug_legitimize_reload_address): Delete. + (rs6000_legitimize_reload_address_ptr): Delete. + (rs6000_option_override_internal): Adjust. + (mem_operand_gpr): Adjust comment. + (legitimate_lo_sum_address_p): Ditto. + (rs6000_legitimize_reload_address): Delete. + (rs6000_debug_legitimize_reload_address): Delete. + * config/rs6000/rs6000.h (LEGITIMIZE_RELOAD_ADDRESS): Delete. + 2019-05-07 Kelvin Nilsen PR target/89765 diff --git a/gcc/config/rs6000/rs6000-protos.h b/gcc/config/rs6000/rs6000-protos.h index 9af619808ac..8466368ce4b 100644 --- a/gcc/config/rs6000/rs6000-protos.h +++ b/gcc/config/rs6000/rs6000-protos.h @@ -137,8 +137,6 @@ extern void rs6000_emit_le_vsx_permute (rtx, rtx, machine_mode); extern void rs6000_emit_le_vsx_move (rtx, rtx, machine_mode); extern bool valid_sf_si_move (rtx, rtx, machine_mode); extern void rs6000_emit_move (rtx, rtx, machine_mode); -extern rtx (*rs6000_legitimize_reload_address_ptr) (rtx, machine_mode, - int, int, int, int *); extern bool rs6000_legitimate_offset_address_p (machine_mode, rtx, bool, bool); extern void rs6000_output_tlsargs (rtx *); diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c index 1114cab5134..5d5765d89b2 100644 --- a/gcc/config/rs6000/rs6000.c +++ b/gcc/config/rs6000/rs6000.c @@ -1368,10 +1368,6 @@ static rtx rs6000_darwin64_record_arg (CUMULATIVE_ARGS *, const_tree, static void macho_branch_islands (void); static tree get_prev_label (tree); #endif -static rtx rs6000_legitimize_reload_address (rtx, machine_mode, int, int, - int, int *); -static rtx rs6000_debug_legitimize_reload_address (rtx, machine_mode, int, - int, int, int *); static bool rs6000_mode_dependent_address (const_rtx); static bool rs6000_debug_mode_dependent_address (const_rtx); static bool rs6000_offsettable_memref_p (rtx, machine_mode, bool); @@ -1392,10 +1388,6 @@ static bool rs6000_debug_can_change_mode_class (machine_mode, static bool rs6000_save_toc_in_prologue_p (void); static rtx rs6000_internal_arg_pointer (void); -rtx (*rs6000_legitimize_reload_address_ptr) (rtx, machine_mode, int, int, - int, int *) - = rs6000_legitimize_reload_address; - static bool (*rs6000_mode_dependent_address_ptr) (const_rtx) = rs6000_mode_dependent_address; @@ -4422,8 +4414,6 @@ rs6000_option_override_internal (bool global_init_p) = rs6000_debug_can_change_mode_class; rs6000_preferred_reload_class_ptr = rs6000_debug_preferred_reload_class; - rs6000_legitimize_reload_address_ptr - = rs6000_debug_legitimize_reload_address; rs6000_mode_dependent_address_ptr = rs6000_debug_mode_dependent_address; } @@ -7663,14 +7653,10 @@ address_offset (rtx op) Accept direct, indexed, offset, lo_sum and tocref. Since this is a constraint function we know the operand has satisfied a suitable - memory predicate. Also accept some odd rtl generated by reload - (see rs6000_legitimize_reload_address for various forms). It is - important that reload rtl be accepted by appropriate constraints - but not by the operand predicate. + memory predicate. Offsetting a lo_sum should not be allowed, except where we know by - alignment that a 32k boundary is not crossed, but see the ??? - comment in rs6000_legitimize_reload_address. Note that by + alignment that a 32k boundary is not crossed. Note that by "offsetting" here we mean a further offset to access parts of the MEM. It's fine to have a lo_sum where the inner address is offset from a sym, since the same sym+offset will appear in the high part @@ -8133,8 +8119,7 @@ legitimate_lo_sum_address_p (machine_mode mode, rtx x, int strict) function says opposite. In most cases, LRA through different transformations can generate correct code for address reloads. It cannot manage only some LO_SUM cases. So we need to add - code analogous to one in rs6000_legitimize_reload_address for - LOW_SUM here saying that some addresses are still valid. */ + code here saying that some addresses are still valid. */ large_toc_ok = (lra_in_progress && TARGET_CMODEL != CMODEL_SMALL && small_toc_ref (x, VOIDmode)); if (TARGET_TOC && ! large_toc_ok) @@ -8912,290 +8897,6 @@ use_toc_relative_ref (rtx sym, machine_mode mode) && GET_MODE_SIZE (mode) <= POWERPC64_TOC_POINTER_ALIGNMENT)); } -/* Our implementation of LEGITIMIZE_RELOAD_ADDRESS. Returns a value to - replace the input X, or the original X if no replacement is called for. - The output parameter *WIN is 1 if the calling macro should goto WIN, - 0 if it should not. - - For RS/6000, we wish to handle large displacements off a base - register by splitting the addend across an addiu/addis and the mem insn. - This cuts number of extra insns needed from 3 to 1. - - On Darwin, we use this to generate code for floating point constants. - A movsf_low is generated so we wind up with 2 instructions rather than 3. - The Darwin code is inside #if TARGET_MACHO because only then are the - machopic_* functions defined. */ -static rtx -rs6000_legitimize_reload_address (rtx x, machine_mode mode, - int opnum, int type, - int ind_levels ATTRIBUTE_UNUSED, int *win) -{ - bool reg_offset_p = reg_offset_addressing_ok_p (mode); - bool quad_offset_p = mode_supports_dq_form (mode); - - /* Nasty hack for vsx_splat_v2df/v2di load from mem, which takes a - DFmode/DImode MEM. Ditto for ISA 3.0 vsx_splat_v4sf/v4si. */ - if (reg_offset_p - && opnum == 1 - && ((mode == DFmode && recog_data.operand_mode[0] == V2DFmode) - || (mode == DImode && recog_data.operand_mode[0] == V2DImode) - || (mode == SFmode && recog_data.operand_mode[0] == V4SFmode - && TARGET_P9_VECTOR) - || (mode == SImode && recog_data.operand_mode[0] == V4SImode - && TARGET_P9_VECTOR))) - reg_offset_p = false; - - /* We must recognize output that we have already generated ourselves. */ - if (GET_CODE (x) == PLUS - && GET_CODE (XEXP (x, 0)) == PLUS - && REG_P (XEXP (XEXP (x, 0), 0)) - && CONST_INT_P (XEXP (XEXP (x, 0), 1)) - && CONST_INT_P (XEXP (x, 1))) - { - if (TARGET_DEBUG_ADDR) - { - fprintf (stderr, "\nlegitimize_reload_address push_reload #1:\n"); - debug_rtx (x); - } - push_reload (XEXP (x, 0), NULL_RTX, &XEXP (x, 0), NULL, - BASE_REG_CLASS, GET_MODE (x), VOIDmode, 0, 0, - opnum, (enum reload_type) type); - *win = 1; - return x; - } - - /* Likewise for (lo_sum (high ...) ...) output we have generated. */ - if (GET_CODE (x) == LO_SUM - && GET_CODE (XEXP (x, 0)) == HIGH) - { - if (TARGET_DEBUG_ADDR) - { - fprintf (stderr, "\nlegitimize_reload_address push_reload #2:\n"); - debug_rtx (x); - } - push_reload (XEXP (x, 0), NULL_RTX, &XEXP (x, 0), NULL, - BASE_REG_CLASS, Pmode, VOIDmode, 0, 0, - opnum, (enum reload_type) type); - *win = 1; - return x; - } - -#if TARGET_MACHO - if (DEFAULT_ABI == ABI_DARWIN && flag_pic - && GET_CODE (x) == LO_SUM - && GET_CODE (XEXP (x, 0)) == PLUS - && XEXP (XEXP (x, 0), 0) == pic_offset_table_rtx - && GET_CODE (XEXP (XEXP (x, 0), 1)) == HIGH - && XEXP (XEXP (XEXP (x, 0), 1), 0) == XEXP (x, 1) - && machopic_operand_p (XEXP (x, 1))) - { - /* Result of previous invocation of this function on Darwin - floating point constant. */ - push_reload (XEXP (x, 0), NULL_RTX, &XEXP (x, 0), NULL, - BASE_REG_CLASS, Pmode, VOIDmode, 0, 0, - opnum, (enum reload_type) type); - *win = 1; - return x; - } -#endif - - if (TARGET_CMODEL != CMODEL_SMALL - && reg_offset_p - && !quad_offset_p - && small_toc_ref (x, VOIDmode)) - { - rtx hi = gen_rtx_HIGH (Pmode, copy_rtx (x)); - x = gen_rtx_LO_SUM (Pmode, hi, x); - if (TARGET_DEBUG_ADDR) - { - fprintf (stderr, "\nlegitimize_reload_address push_reload #3:\n"); - debug_rtx (x); - } - push_reload (XEXP (x, 0), NULL_RTX, &XEXP (x, 0), NULL, - BASE_REG_CLASS, Pmode, VOIDmode, 0, 0, - opnum, (enum reload_type) type); - *win = 1; - return x; - } - - if (GET_CODE (x) == PLUS - && REG_P (XEXP (x, 0)) - && HARD_REGISTER_P (XEXP (x, 0)) - && INT_REG_OK_FOR_BASE_P (XEXP (x, 0), 1) - && CONST_INT_P (XEXP (x, 1)) - && reg_offset_p - && (quad_offset_p || !VECTOR_MODE_P (mode) || VECTOR_MEM_NONE_P (mode))) - { - HOST_WIDE_INT val = INTVAL (XEXP (x, 1)); - HOST_WIDE_INT low = ((val & 0xffff) ^ 0x8000) - 0x8000; - HOST_WIDE_INT high - = (((val - low) & 0xffffffff) ^ 0x80000000) - 0x80000000; - - /* Check for 32-bit overflow or quad addresses with one of the - four least significant bits set. */ - if (high + low != val - || (quad_offset_p && (low & 0xf))) - { - *win = 0; - return x; - } - - /* Reload the high part into a base reg; leave the low part - in the mem directly. */ - - x = gen_rtx_PLUS (GET_MODE (x), - gen_rtx_PLUS (GET_MODE (x), XEXP (x, 0), - GEN_INT (high)), - GEN_INT (low)); - - if (TARGET_DEBUG_ADDR) - { - fprintf (stderr, "\nlegitimize_reload_address push_reload #4:\n"); - debug_rtx (x); - } - push_reload (XEXP (x, 0), NULL_RTX, &XEXP (x, 0), NULL, - BASE_REG_CLASS, GET_MODE (x), VOIDmode, 0, 0, - opnum, (enum reload_type) type); - *win = 1; - return x; - } - - if (SYMBOL_REF_P (x) - && reg_offset_p - && !quad_offset_p - && (!VECTOR_MODE_P (mode) || VECTOR_MEM_NONE_P (mode)) -#if TARGET_MACHO - && DEFAULT_ABI == ABI_DARWIN - && (flag_pic || MACHO_DYNAMIC_NO_PIC_P) - && machopic_symbol_defined_p (x) -#else - && DEFAULT_ABI == ABI_V4 - && !flag_pic -#endif - /* Don't do this for TFmode or TDmode, since the result isn't offsettable. - The same goes for DImode without 64-bit gprs and DFmode and DDmode - without fprs. - ??? Assume floating point reg based on mode? This assumption is - violated by eg. powerpc-linux -m32 compile of gcc.dg/pr28796-2.c - where reload ends up doing a DFmode load of a constant from - mem using two gprs. Unfortunately, at this point reload - hasn't yet selected regs so poking around in reload data - won't help and even if we could figure out the regs reliably, - we'd still want to allow this transformation when the mem is - naturally aligned. Since we say the address is good here, we - can't disable offsets from LO_SUMs in mem_operand_gpr. - FIXME: Allow offset from lo_sum for other modes too, when - mem is sufficiently aligned. - - Also disallow this if the type can go in VMX/Altivec registers, since - those registers do not have d-form (reg+offset) address modes. */ - && !reg_addr[mode].scalar_in_vmx_p - && mode != TFmode - && mode != TDmode - && mode != IFmode - && mode != KFmode - && (mode != TImode || !TARGET_VSX) - && mode != PTImode - && (mode != DImode || TARGET_POWERPC64) - && ((mode != DFmode && mode != DDmode) || TARGET_POWERPC64 - || TARGET_HARD_FLOAT)) - { -#if TARGET_MACHO - if (flag_pic) - { - rtx offset = machopic_gen_offset (x); - x = gen_rtx_LO_SUM (GET_MODE (x), - gen_rtx_PLUS (Pmode, pic_offset_table_rtx, - gen_rtx_HIGH (Pmode, offset)), offset); - } - else -#endif - x = gen_rtx_LO_SUM (GET_MODE (x), - gen_rtx_HIGH (Pmode, x), x); - - if (TARGET_DEBUG_ADDR) - { - fprintf (stderr, "\nlegitimize_reload_address push_reload #5:\n"); - debug_rtx (x); - } - push_reload (XEXP (x, 0), NULL_RTX, &XEXP (x, 0), NULL, - BASE_REG_CLASS, Pmode, VOIDmode, 0, 0, - opnum, (enum reload_type) type); - *win = 1; - return x; - } - - /* Reload an offset address wrapped by an AND that represents the - masking of the lower bits. Strip the outer AND and let reload - convert the offset address into an indirect address. For VSX, - force reload to create the address with an AND in a separate - register, because we can't guarantee an altivec register will - be used. */ - if (VECTOR_MEM_ALTIVEC_P (mode) - && GET_CODE (x) == AND - && GET_CODE (XEXP (x, 0)) == PLUS - && REG_P (XEXP (XEXP (x, 0), 0)) - && CONST_INT_P (XEXP (XEXP (x, 0), 1)) - && CONST_INT_P (XEXP (x, 1)) - && INTVAL (XEXP (x, 1)) == -16) - { - x = XEXP (x, 0); - *win = 1; - return x; - } - - if (TARGET_TOC - && reg_offset_p - && !quad_offset_p - && SYMBOL_REF_P (x) - && use_toc_relative_ref (x, mode)) - { - x = create_TOC_reference (x, NULL_RTX); - if (TARGET_CMODEL != CMODEL_SMALL) - { - if (TARGET_DEBUG_ADDR) - { - fprintf (stderr, "\nlegitimize_reload_address push_reload #6:\n"); - debug_rtx (x); - } - push_reload (XEXP (x, 0), NULL_RTX, &XEXP (x, 0), NULL, - BASE_REG_CLASS, Pmode, VOIDmode, 0, 0, - opnum, (enum reload_type) type); - } - *win = 1; - return x; - } - *win = 0; - return x; -} - -/* Debug version of rs6000_legitimize_reload_address. */ -static rtx -rs6000_debug_legitimize_reload_address (rtx x, machine_mode mode, - int opnum, int type, - int ind_levels, int *win) -{ - rtx ret = rs6000_legitimize_reload_address (x, mode, opnum, type, - ind_levels, win); - fprintf (stderr, - "\nrs6000_legitimize_reload_address: mode = %s, opnum = %d, " - "type = %d, ind_levels = %d, win = %d, original addr:\n", - GET_MODE_NAME (mode), opnum, type, ind_levels, *win); - debug_rtx (x); - - if (x == ret) - fprintf (stderr, "Same address returned\n"); - else if (!ret) - fprintf (stderr, "NULL returned\n"); - else - { - fprintf (stderr, "New address:\n"); - debug_rtx (ret); - } - - return ret; -} - /* TARGET_LEGITIMATE_ADDRESS_P recognizes an RTL expression that is a valid memory address for an instruction. The MODE argument is the machine mode for the MEM expression diff --git a/gcc/config/rs6000/rs6000.h b/gcc/config/rs6000/rs6000.h index 15d00e620c7..14a9e199bc8 100644 --- a/gcc/config/rs6000/rs6000.h +++ b/gcc/config/rs6000/rs6000.h @@ -1741,22 +1741,6 @@ typedef struct rs6000_args ((((unsigned HOST_WIDE_INT)GET_MODE_MASK (mode)) + 1) >> 1)) -/* Try a machine-dependent way of reloading an illegitimate address - operand. If we find one, push the reload and jump to WIN. This - macro is used in only one place: `find_reloads_address' in reload.c. - - Implemented on rs6000 by rs6000_legitimize_reload_address. - Note that (X) is evaluated twice; this is safe in current usage. */ - -#define LEGITIMIZE_RELOAD_ADDRESS(X,MODE,OPNUM,TYPE,IND_LEVELS,WIN) \ -do { \ - int win; \ - (X) = rs6000_legitimize_reload_address_ptr ((X), (MODE), (OPNUM), \ - (int)(TYPE), (IND_LEVELS), &win); \ - if ( win ) \ - goto WIN; \ -} while (0) - #define FIND_BASE_TERM rs6000_find_base_term /* The register number of the register used to address a table of