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File _service:tar_scm:LoongArch-Support-split-symbol.patch of Package gcc
From 078261cabef370e7f3201980d03bd54a049290e9 Mon Sep 17 00:00:00 2001 From: Lulu Cheng <chenglulu@loongson.cn> Date: Thu, 21 Jul 2022 11:04:08 +0800 Subject: [PATCH 004/124] LoongArch: Support split symbol. Add compilation option '-mexplicit-relocs', and if enable '-mexplicit-relocs' the symbolic address load instruction 'la.*' will be split into two instructions. This compilation option enabled by default. gcc/ChangeLog: * common/config/loongarch/loongarch-common.cc: Enable '-fsection-anchors' when O1 and more advanced optimization. * config/loongarch/genopts/loongarch.opt.in: Add new option '-mexplicit-relocs', and enable by default. * config/loongarch/loongarch-protos.h (loongarch_split_move_insn_p): Delete function declaration. (loongarch_split_move_insn): Delete function declaration. (loongarch_split_symbol_type): Add function declaration. * config/loongarch/loongarch.cc (enum loongarch_address_type): Add new address type 'ADDRESS_LO_SUM'. (loongarch_classify_symbolic_expression): New function definitions. Classify the base of symbolic expression X, given that X appears in context CONTEXT. (loongarch_symbol_insns): Add a judgment condition TARGET_EXPLICIT_RELOCS. (loongarch_split_symbol_type): New function definitions. Determines whether the symbol load should be split into two instructions. (loongarch_valid_lo_sum_p): New function definitions. Return true if a LO_SUM can address a value of mode MODE when the LO_SUM symbol has type SYMBOL_TYPE. (loongarch_classify_address): Add handling of 'LO_SUM'. (loongarch_address_insns): Add handling of 'ADDRESS_LO_SUM'. (loongarch_signed_immediate_p): Sort code. (loongarch_12bit_offset_address_p): Return true if address type is ADDRESS_LO_SUM. (loongarch_const_insns): Add handling of 'HIGH'. (loongarch_split_move_insn_p): Add the static attribute to the function. (loongarch_emit_set): New function definitions. (loongarch_call_tls_get_addr): Add symbol handling when defining TARGET_EXPLICIT_RELOCS. (loongarch_legitimize_tls_address): Add symbol handling when defining the TARGET_EXPLICIT_RELOCS macro. (loongarch_split_symbol): New function definitions. Split symbol. (loongarch_legitimize_address): Add codes see if the address can split into a high part and a LO_SUM. (loongarch_legitimize_const_move): Add codes split moves of symbolic constants into high and low. (loongarch_split_move_insn): Delete function definitions. (loongarch_output_move): Add support for HIGH and LO_SUM. (loongarch_print_operand_reloc): New function definitions. Print symbolic operand OP, which is part of a HIGH or LO_SUM in context CONTEXT. (loongarch_memmodel_needs_release_fence): Sort code. (loongarch_print_operand): Rearrange alphabetical order and add H and L to support HIGH and LOW output. (loongarch_print_operand_address): Add handling of 'ADDRESS_LO_SUM'. (TARGET_MIN_ANCHOR_OFFSET): Define macro to -IMM_REACH/2. (TARGET_MAX_ANCHOR_OFFSET): Define macro to IMM_REACH/2-1. * config/loongarch/loongarch.md (movti): Delete the template. (*movti): Delete the template. (movtf): Delete the template. (*movtf): Delete the template. (*low<mode>): New template of normal symbol low address. (@tls_low<mode>): New template of tls symbol low address. (@ld_from_got<mode>): New template load address from got table. (@ori_l_lo12<mode>): New template. * config/loongarch/loongarch.opt: Update from loongarch.opt.in. * config/loongarch/predicates.md: Add support for symbol_type HIGH. gcc/testsuite/ChangeLog: * gcc.target/loongarch/func-call-1.c: Add build option '-mno-explicit-relocs'. * gcc.target/loongarch/func-call-2.c: Add build option '-mno-explicit-relocs'. * gcc.target/loongarch/func-call-3.c: Add build option '-mno-explicit-relocs'. * gcc.target/loongarch/func-call-4.c: Add build option '-mno-explicit-relocs'. * gcc.target/loongarch/func-call-5.c: New test. * gcc.target/loongarch/func-call-6.c: New test. * gcc.target/loongarch/func-call-7.c: New test. * gcc.target/loongarch/func-call-8.c: New test. * gcc.target/loongarch/relocs-symbol-noaddend.c: New test. Signed-off-by: Peng Fan <fanpeng@loongson.cn> Signed-off-by: ticat_fp <fanpeng@loongson.cn> --- .../config/loongarch/loongarch-common.cc | 1 + gcc/config/loongarch/genopts/loongarch.opt.in | 4 + gcc/config/loongarch/loongarch-protos.h | 3 +- gcc/config/loongarch/loongarch.cc | 412 ++++++++++++++++-- gcc/config/loongarch/loongarch.md | 122 +++--- gcc/config/loongarch/loongarch.opt | 4 + gcc/config/loongarch/predicates.md | 20 +- .../gcc.target/loongarch/func-call-1.c | 2 +- .../gcc.target/loongarch/func-call-2.c | 2 +- .../gcc.target/loongarch/func-call-3.c | 2 +- .../gcc.target/loongarch/func-call-4.c | 2 +- .../gcc.target/loongarch/func-call-5.c | 33 ++ .../gcc.target/loongarch/func-call-6.c | 33 ++ .../gcc.target/loongarch/func-call-7.c | 34 ++ .../gcc.target/loongarch/func-call-8.c | 33 ++ .../loongarch/relocs-symbol-noaddend.c | 23 + 16 files changed, 614 insertions(+), 116 deletions(-) create mode 100644 gcc/testsuite/gcc.target/loongarch/func-call-5.c create mode 100644 gcc/testsuite/gcc.target/loongarch/func-call-6.c create mode 100644 gcc/testsuite/gcc.target/loongarch/func-call-7.c create mode 100644 gcc/testsuite/gcc.target/loongarch/func-call-8.c create mode 100644 gcc/testsuite/gcc.target/loongarch/relocs-symbol-noaddend.c diff --git a/gcc/common/config/loongarch/loongarch-common.cc b/gcc/common/config/loongarch/loongarch-common.cc index ed3730fce..f8b4660fa 100644 --- a/gcc/common/config/loongarch/loongarch-common.cc +++ b/gcc/common/config/loongarch/loongarch-common.cc @@ -34,6 +34,7 @@ along with GCC; see the file COPYING3. If not see static const struct default_options loongarch_option_optimization_table[] = { { OPT_LEVELS_ALL, OPT_fasynchronous_unwind_tables, NULL, 1 }, + { OPT_LEVELS_1_PLUS, OPT_fsection_anchors, NULL, 1 }, { OPT_LEVELS_NONE, 0, NULL, 0 } }; diff --git a/gcc/config/loongarch/genopts/loongarch.opt.in b/gcc/config/loongarch/genopts/loongarch.opt.in index 61e7d72a0..6f3950093 100644 --- a/gcc/config/loongarch/genopts/loongarch.opt.in +++ b/gcc/config/loongarch/genopts/loongarch.opt.in @@ -154,6 +154,10 @@ mmax-inline-memcpy-size= Target Joined RejectNegative UInteger Var(loongarch_max_inline_memcpy_size) Init(1024) -mmax-inline-memcpy-size=SIZE Set the max size of memcpy to inline, default is 1024. +mexplicit-relocs +Target Var(TARGET_EXPLICIT_RELOCS) Init(1) +Use %reloc() assembly operators. + ; The code model option names for -mcmodel. Enum Name(cmodel) Type(int) diff --git a/gcc/config/loongarch/loongarch-protos.h b/gcc/config/loongarch/loongarch-protos.h index 080766250..cadaad751 100644 --- a/gcc/config/loongarch/loongarch-protos.h +++ b/gcc/config/loongarch/loongarch-protos.h @@ -77,8 +77,6 @@ extern rtx loongarch_legitimize_call_address (rtx); extern rtx loongarch_subword (rtx, bool); extern bool loongarch_split_move_p (rtx, rtx); extern void loongarch_split_move (rtx, rtx, rtx); -extern bool loongarch_split_move_insn_p (rtx, rtx); -extern void loongarch_split_move_insn (rtx, rtx, rtx); extern const char *loongarch_output_move (rtx, rtx); extern bool loongarch_cfun_has_cprestore_slot_p (void); #ifdef RTX_CODE @@ -160,6 +158,7 @@ extern rtx loongarch_expand_thread_pointer (rtx); extern bool loongarch_eh_uses (unsigned int); extern bool loongarch_epilogue_uses (unsigned int); extern bool loongarch_load_store_bonding_p (rtx *, machine_mode, bool); +extern bool loongarch_split_symbol_type (enum loongarch_symbol_type); typedef rtx (*mulsidi3_gen_fn) (rtx, rtx, rtx); diff --git a/gcc/config/loongarch/loongarch.cc b/gcc/config/loongarch/loongarch.cc index 2e2f16e72..1b5af2c7d 100644 --- a/gcc/config/loongarch/loongarch.cc +++ b/gcc/config/loongarch/loongarch.cc @@ -100,6 +100,10 @@ along with GCC; see the file COPYING3. If not see ADDRESS_REG_REG A base register indexed by (optionally scaled) register. + ADDRESS_LO_SUM + A LO_SUM rtx. The first operand is a valid base register and the second + operand is a symbolic address. + ADDRESS_CONST_INT A signed 16-bit constant address. @@ -109,6 +113,7 @@ enum loongarch_address_type { ADDRESS_REG, ADDRESS_REG_REG, + ADDRESS_LO_SUM, ADDRESS_CONST_INT, ADDRESS_SYMBOLIC }; @@ -1641,6 +1646,21 @@ loongarch_classify_symbol (const_rtx x) return SYMBOL_PCREL; } +/* Classify the base of symbolic expression X, given that X appears in + context CONTEXT. */ + +static enum loongarch_symbol_type +loongarch_classify_symbolic_expression (rtx x) +{ + rtx offset; + + split_const (x, &x, &offset); + if (UNSPEC_ADDRESS_P (x)) + return UNSPEC_ADDRESS_TYPE (x); + + return loongarch_classify_symbol (x); +} + /* Return true if X is a symbolic constant. If it is, store the type of the symbol in *SYMBOL_TYPE. */ @@ -1696,7 +1716,7 @@ loongarch_symbol_insns (enum loongarch_symbol_type type, machine_mode mode) case SYMBOL_GOT_DISP: /* The constant will have to be loaded from the GOT before it is used in an address. */ - if (mode != MAX_MACHINE_MODE) + if (!TARGET_EXPLICIT_RELOCS && mode != MAX_MACHINE_MODE) return 0; return 3; @@ -1814,6 +1834,84 @@ loongarch_valid_offset_p (rtx x, machine_mode mode) return true; } +/* Should a symbol of type SYMBOL_TYPE should be split in two? */ + +bool +loongarch_split_symbol_type (enum loongarch_symbol_type symbol_type) +{ + switch (symbol_type) + { + case SYMBOL_PCREL: + case SYMBOL_GOT_DISP: + case SYMBOL_TLS_IE: + case SYMBOL_TLS_LE: + case SYMBOL_TLSGD: + case SYMBOL_TLSLDM: + return true; + + case SYMBOL_TLS: + return false; + + default: + gcc_unreachable (); + } +} + +/* Return true if a LO_SUM can address a value of mode MODE when the + LO_SUM symbol has type SYMBOL_TYPE. */ + +static bool +loongarch_valid_lo_sum_p (enum loongarch_symbol_type symbol_type, + machine_mode mode, rtx x) +{ + int align, size; + + /* Check that symbols of type SYMBOL_TYPE can be used to access values + of mode MODE. */ + if (loongarch_symbol_insns (symbol_type, mode) == 0) + return false; + + /* Check that there is a known low-part relocation. */ + if (!loongarch_split_symbol_type (symbol_type)) + return false; + + /* We can't tell size or alignment when we have BLKmode, so try extracing a + decl from the symbol if possible. */ + if (mode == BLKmode) + { + rtx offset; + + /* Extract the symbol from the LO_SUM operand, if any. */ + split_const (x, &x, &offset); + + /* Might be a CODE_LABEL. We can compute align but not size for that, + so don't bother trying to handle it. */ + if (!SYMBOL_REF_P (x)) + return false; + + /* Use worst case assumptions if we don't have a SYMBOL_REF_DECL. */ + align = (SYMBOL_REF_DECL (x) + ? DECL_ALIGN (SYMBOL_REF_DECL (x)) + : 1); + size = (SYMBOL_REF_DECL (x) && DECL_SIZE (SYMBOL_REF_DECL (x)) + ? tree_to_uhwi (DECL_SIZE (SYMBOL_REF_DECL (x))) + : 2*BITS_PER_WORD); + } + else + { + align = GET_MODE_ALIGNMENT (mode); + size = GET_MODE_BITSIZE (mode); + } + + /* We may need to split multiword moves, so make sure that each word + can be accessed without inducing a carry. */ + if (size > BITS_PER_WORD + && (!TARGET_STRICT_ALIGN || size > align)) + return false; + + return true; +} + static bool loongarch_valid_index_p (struct loongarch_address_info *info, rtx x, machine_mode mode, bool strict_p) @@ -1880,6 +1978,26 @@ loongarch_classify_address (struct loongarch_address_info *info, rtx x, info->offset = XEXP (x, 1); return (loongarch_valid_base_register_p (info->reg, mode, strict_p) && loongarch_valid_offset_p (info->offset, mode)); + + case LO_SUM: + info->type = ADDRESS_LO_SUM; + info->reg = XEXP (x, 0); + info->offset = XEXP (x, 1); + /* We have to trust the creator of the LO_SUM to do something vaguely + sane. Target-independent code that creates a LO_SUM should also + create and verify the matching HIGH. Target-independent code that + adds an offset to a LO_SUM must prove that the offset will not + induce a carry. Failure to do either of these things would be + a bug, and we are not required to check for it here. The MIPS + backend itself should only create LO_SUMs for valid symbolic + constants, with the high part being either a HIGH or a copy + of _gp. */ + info->symbol_type + = loongarch_classify_symbolic_expression (info->offset); + return (loongarch_valid_base_register_p (info->reg, mode, strict_p) + && loongarch_valid_lo_sum_p (info->symbol_type, mode, + info->offset)); + default: return false; } @@ -1940,6 +2058,9 @@ loongarch_address_insns (rtx x, machine_mode mode, bool might_split_p) case ADDRESS_CONST_INT: return factor; + case ADDRESS_LO_SUM: + return factor + 1; + case ADDRESS_SYMBOLIC: return factor * loongarch_symbol_insns (addr.symbol_type, mode); } @@ -1967,7 +2088,8 @@ loongarch_signed_immediate_p (unsigned HOST_WIDE_INT x, int bits, return loongarch_unsigned_immediate_p (x, bits, shift); } -/* Return true if X is a legitimate address with a 12-bit offset. +/* Return true if X is a legitimate address with a 12-bit offset + or addr.type is ADDRESS_LO_SUM. MODE is the mode of the value being accessed. */ bool @@ -1976,9 +2098,10 @@ loongarch_12bit_offset_address_p (rtx x, machine_mode mode) struct loongarch_address_info addr; return (loongarch_classify_address (&addr, x, mode, false) - && addr.type == ADDRESS_REG - && CONST_INT_P (addr.offset) - && LARCH_12BIT_OFFSET_P (INTVAL (addr.offset))); + && ((addr.type == ADDRESS_REG + && CONST_INT_P (addr.offset) + && LARCH_12BIT_OFFSET_P (INTVAL (addr.offset))) + || addr.type == ADDRESS_LO_SUM)); } /* Return true if X is a legitimate address with a 14-bit offset shifted 2. @@ -2020,6 +2143,14 @@ loongarch_const_insns (rtx x) switch (GET_CODE (x)) { + case HIGH: + if (!loongarch_symbolic_constant_p (XEXP (x, 0), &symbol_type) + || !loongarch_split_symbol_type (symbol_type)) + return 0; + + /* This is simply a PCALAU12I. */ + return 1; + case CONST_INT: return loongarch_integer_cost (INTVAL (x)); @@ -2080,6 +2211,8 @@ loongarch_split_const_insns (rtx x) return low + high; } +static bool loongarch_split_move_insn_p (rtx dest, rtx src); + /* Return the number of instructions needed to implement INSN, given that it loads from or stores to MEM. */ @@ -2197,6 +2330,15 @@ loongarch_unspec_address (rtx address, enum loongarch_symbol_type symbol_type) return loongarch_unspec_address_offset (base, offset, symbol_type); } +/* Emit an instruction of the form (set TARGET SRC). */ + +static rtx +loongarch_emit_set (rtx target, rtx src) +{ + emit_insn (gen_rtx_SET (target, src)); + return target; +} + /* If OP is an UNSPEC address, return the address to which it refers, otherwise return OP itself. */ @@ -2278,6 +2420,7 @@ loongarch_call_tls_get_addr (rtx sym, enum loongarch_symbol_type type, rtx v0) { rtx loc, a0; rtx_insn *insn; + rtx tmp = gen_reg_rtx (Pmode); a0 = gen_rtx_REG (Pmode, GP_ARG_FIRST); @@ -2288,12 +2431,22 @@ loongarch_call_tls_get_addr (rtx sym, enum loongarch_symbol_type type, rtx v0) start_sequence (); - if (type == SYMBOL_TLSLDM) - emit_insn (loongarch_got_load_tls_ld (a0, loc)); - else if (type == SYMBOL_TLSGD) - emit_insn (loongarch_got_load_tls_gd (a0, loc)); + if (TARGET_EXPLICIT_RELOCS) + { + /* Split tls symbol to high and low. */ + rtx high = gen_rtx_HIGH (Pmode, copy_rtx (loc)); + high = loongarch_force_temporary (tmp, high); + emit_insn (gen_tls_low (Pmode, a0, high, loc)); + } else - gcc_unreachable (); + { + if (type == SYMBOL_TLSLDM) + emit_insn (loongarch_got_load_tls_ld (a0, loc)); + else if (type == SYMBOL_TLSGD) + emit_insn (loongarch_got_load_tls_gd (a0, loc)); + else + gcc_unreachable (); + } insn = emit_call_insn (gen_call_value_internal (v0, loongarch_tls_symbol, const0_rtx)); @@ -2308,12 +2461,12 @@ loongarch_call_tls_get_addr (rtx sym, enum loongarch_symbol_type type, rtx v0) /* Generate the code to access LOC, a thread-local SYMBOL_REF, and return its address. The return value will be both a valid address and a valid - SET_SRC. */ + SET_SRC (either a REG or a LO_SUM). */ static rtx loongarch_legitimize_tls_address (rtx loc) { - rtx dest, tp, tmp; + rtx dest, tp, tmp, tmp1, tmp2, tmp3; enum tls_model model = SYMBOL_REF_TLS_MODEL (loc); rtx_insn *insn; @@ -2334,21 +2487,45 @@ loongarch_legitimize_tls_address (rtx loc) break; case TLS_MODEL_INITIAL_EXEC: - /* la.tls.ie; tp-relative add. */ - tp = gen_rtx_REG (Pmode, THREAD_POINTER_REGNUM); - tmp = gen_reg_rtx (Pmode); - emit_insn (loongarch_got_load_tls_ie (tmp, loc)); - dest = gen_reg_rtx (Pmode); - emit_insn (gen_add3_insn (dest, tmp, tp)); + { + /* la.tls.ie; tp-relative add. */ + tp = gen_rtx_REG (Pmode, THREAD_POINTER_REGNUM); + tmp1 = gen_reg_rtx (Pmode); + dest = gen_reg_rtx (Pmode); + if (TARGET_EXPLICIT_RELOCS) + { + tmp2 = loongarch_unspec_address (loc, SYMBOL_TLS_IE); + tmp3 = gen_reg_rtx (Pmode); + rtx high = gen_rtx_HIGH (Pmode, copy_rtx (tmp2)); + high = loongarch_force_temporary (tmp3, high); + emit_insn (gen_ld_from_got (Pmode, tmp1, high, tmp2)); + } + else + emit_insn (loongarch_got_load_tls_ie (tmp1, loc)); + emit_insn (gen_add3_insn (dest, tmp1, tp)); + } break; case TLS_MODEL_LOCAL_EXEC: - /* la.tls.le; tp-relative add. */ - tp = gen_rtx_REG (Pmode, THREAD_POINTER_REGNUM); - tmp = gen_reg_rtx (Pmode); - emit_insn (loongarch_got_load_tls_le (tmp, loc)); - dest = gen_reg_rtx (Pmode); - emit_insn (gen_add3_insn (dest, tmp, tp)); + { + /* la.tls.le; tp-relative add. */ + tp = gen_rtx_REG (Pmode, THREAD_POINTER_REGNUM); + tmp1 = gen_reg_rtx (Pmode); + dest = gen_reg_rtx (Pmode); + + if (TARGET_EXPLICIT_RELOCS) + { + tmp2 = loongarch_unspec_address (loc, SYMBOL_TLS_LE); + tmp3 = gen_reg_rtx (Pmode); + rtx high = gen_rtx_HIGH (Pmode, copy_rtx (tmp2)); + high = loongarch_force_temporary (tmp3, high); + emit_insn (gen_ori_l_lo12 (Pmode, tmp1, high, tmp2)); + } + else + emit_insn (loongarch_got_load_tls_le (tmp1, loc)); + emit_insn (gen_add3_insn (dest, tmp1, tp)); + + } break; default: @@ -2397,6 +2574,68 @@ loongarch_force_address (rtx x, machine_mode mode) return x; } +/* If MODE is MAX_MACHINE_MODE, ADDR appears as a move operand, otherwise + it appears in a MEM of that mode. Return true if ADDR is a legitimate + constant in that context and can be split into high and low parts. + If so, and if LOW_OUT is nonnull, emit the high part and store the + low part in *LOW_OUT. Leave *LOW_OUT unchanged otherwise. + + Return false if build with '-mno-explicit-relocs'. + + TEMP is as for loongarch_force_temporary and is used to load the high + part into a register. + + When MODE is MAX_MACHINE_MODE, the low part is guaranteed to be + a legitimize SET_SRC for an .md pattern, otherwise the low part + is guaranteed to be a legitimate address for mode MODE. */ + +bool +loongarch_split_symbol (rtx temp, rtx addr, machine_mode mode, rtx *low_out) +{ + enum loongarch_symbol_type symbol_type; + rtx high; + + /* If build with '-mno-explicit-relocs', don't split symbol. */ + if (!TARGET_EXPLICIT_RELOCS) + return false; + + if ((GET_CODE (addr) == HIGH && mode == MAX_MACHINE_MODE) + || !loongarch_symbolic_constant_p (addr, &symbol_type) + || loongarch_symbol_insns (symbol_type, mode) == 0 + || !loongarch_split_symbol_type (symbol_type)) + return false; + + if (temp == NULL) + temp = gen_reg_rtx (Pmode); + + /* Get the 12-31 bits of the address. */ + high = gen_rtx_HIGH (Pmode, copy_rtx (addr)); + high = loongarch_force_temporary (temp, high); + + if (low_out) + switch (symbol_type) + { + case SYMBOL_PCREL: + *low_out = gen_rtx_LO_SUM (Pmode, high, addr); + break; + + case SYMBOL_GOT_DISP: + /* SYMBOL_GOT_DISP symbols are loaded from the GOT. */ + { + rtx low = gen_rtx_LO_SUM (Pmode, high, addr); + rtx mem = gen_rtx_MEM (Pmode, low); + *low_out = gen_rtx_UNSPEC (Pmode, gen_rtvec (1, mem), + UNSPEC_LOAD_FROM_GOT); + break; + } + + default: + gcc_unreachable (); + } + + return true; +} + /* This function is used to implement LEGITIMIZE_ADDRESS. If X can be legitimized in a way that the generic machinery might not expect, return a new address, otherwise return NULL. MODE is the mode of @@ -2412,6 +2651,10 @@ loongarch_legitimize_address (rtx x, rtx oldx ATTRIBUTE_UNUSED, if (loongarch_tls_symbol_p (x)) return loongarch_legitimize_tls_address (x); + /* See if the address can split into a high part and a LO_SUM. */ + if (loongarch_split_symbol (NULL, x, mode, &addr)) + return loongarch_force_address (addr, mode); + /* Handle BASE + OFFSET using loongarch_add_offset. */ loongarch_split_plus (x, &base, &offset); if (offset != 0) @@ -2499,6 +2742,13 @@ loongarch_legitimize_const_move (machine_mode mode, rtx dest, rtx src) return; } + /* Split moves of symbolic constants into high and low. */ + if (loongarch_split_symbol (dest, src, MAX_MACHINE_MODE, &src)) + { + loongarch_emit_set (dest, src); + return; + } + /* Generate the appropriate access sequences for TLS symbols. */ if (loongarch_tls_symbol_p (src)) { @@ -3241,21 +3491,12 @@ loongarch_split_move (rtx dest, rtx src, rtx insn_) /* Return true if a move from SRC to DEST in INSN should be split. */ -bool +static bool loongarch_split_move_insn_p (rtx dest, rtx src) { return loongarch_split_move_p (dest, src); } -/* Split a move from SRC to DEST in INSN, given that - loongarch_split_move_insn_p holds. */ - -void -loongarch_split_move_insn (rtx dest, rtx src, rtx insn) -{ - loongarch_split_move (dest, src, insn); -} - /* Implement TARGET_CONSTANT_ALIGNMENT. */ static HOST_WIDE_INT @@ -3369,13 +3610,16 @@ loongarch_output_move (rtx dest, rtx src) case 2: return "st.h\t%z1,%0"; case 4: - /* Matching address type with a 12bit offset. */ - if (const_arith_operand (offset, Pmode)) + /* Matching address type with a 12bit offset and + ADDRESS_LO_SUM. */ + if (const_arith_operand (offset, Pmode) + || GET_CODE (offset) == LO_SUM) return "st.w\t%z1,%0"; else return "stptr.w\t%z1,%0"; case 8: - if (const_arith_operand (offset, Pmode)) + if (const_arith_operand (offset, Pmode) + || GET_CODE (offset) == LO_SUM) return "st.d\t%z1,%0"; else return "stptr.d\t%z1,%0"; @@ -3408,13 +3652,16 @@ loongarch_output_move (rtx dest, rtx src) case 2: return "ld.hu\t%0,%1"; case 4: - /* Matching address type with a 12bit offset. */ - if (const_arith_operand (offset, Pmode)) + /* Matching address type with a 12bit offset and + ADDRESS_LO_SUM. */ + if (const_arith_operand (offset, Pmode) + || GET_CODE (offset) == LO_SUM) return "ld.w\t%0,%1"; else return "ldptr.w\t%0,%1"; case 8: - if (const_arith_operand (offset, Pmode)) + if (const_arith_operand (offset, Pmode) + || GET_CODE (offset) == LO_SUM) return "ld.d\t%0,%1"; else return "ldptr.d\t%0,%1"; @@ -3423,6 +3670,21 @@ loongarch_output_move (rtx dest, rtx src) } } + if (src_code == HIGH) + { + rtx offset, x; + split_const (XEXP (src, 0), &x, &offset); + enum loongarch_symbol_type type = SYMBOL_PCREL; + + if (UNSPEC_ADDRESS_P (x)) + type = UNSPEC_ADDRESS_TYPE (x); + + if (type == SYMBOL_TLS_LE) + return "lu12i.w\t%0,%h1"; + else + return "pcalau12i\t%0,%h1"; + } + if (src_code == CONST_INT) { if (LU12I_INT (src)) @@ -3438,7 +3700,8 @@ loongarch_output_move (rtx dest, rtx src) } } - if (dest_code == REG && symbolic_operand (src, VOIDmode)) + if (!TARGET_EXPLICIT_RELOCS + && dest_code == REG && symbolic_operand (src, VOIDmode)) { if (loongarch_classify_symbol (src) == SYMBOL_PCREL) return "la.local\t%0,%1"; @@ -4307,6 +4570,49 @@ loongarch_memmodel_needs_release_fence (enum memmodel model) } } +/* Print symbolic operand OP, which is part of a HIGH or LO_SUM + in context CONTEXT. HI_RELOC indicates a high-part reloc. */ + +static void +loongarch_print_operand_reloc (FILE *file, rtx op, bool hi_reloc) +{ + const char *reloc; + + switch (loongarch_classify_symbolic_expression (op)) + { + case SYMBOL_PCREL: + reloc = hi_reloc ? "%pc_hi20" : "%pc_lo12"; + break; + + case SYMBOL_GOT_DISP: + reloc = hi_reloc ? "%got_pc_hi20" : "%got_pc_lo12"; + break; + + case SYMBOL_TLS_IE: + reloc = hi_reloc ? "%ie_pc_hi20" : "%ie_pc_lo12"; + break; + + case SYMBOL_TLS_LE: + reloc = hi_reloc ? "%le_hi20" : "%le_lo12"; + break; + + case SYMBOL_TLSGD: + reloc = hi_reloc ? "%gd_pc_hi20" : "%got_pc_lo12"; + break; + + case SYMBOL_TLSLDM: + reloc = hi_reloc ? "%ld_pc_hi20" : "%got_pc_lo12"; + break; + + default: + gcc_unreachable (); + } + + fprintf (file, "%s(", reloc); + output_addr_const (file, loongarch_strip_unspec_address (op)); + fputc (')', file); +} + /* Implement TARGET_PRINT_OPERAND. The LoongArch-specific operand codes are: 'A' Print a _DB suffix if the memory model requires a release. @@ -4315,7 +4621,10 @@ loongarch_memmodel_needs_release_fence (enum memmodel model) 'd' Print CONST_INT OP in decimal. 'F' Print the FPU branch condition for comparison OP. 'G' Print a DBAR insn if the memory model requires a release. + 'H' Print address 52-61bit relocation associated with OP. + 'h' Print the high-part relocation associated with OP. 'i' Print i if the operand is not a register. + 'L' Print the low-part relocation associated with OP. 'm' Print one less than CONST_INT OP in decimal. 'N' Print the inverse of the integer branch condition for comparison OP. 'T' Print 'f' for (eq:CC ...), 't' for (ne:CC ...), @@ -4372,11 +4681,21 @@ loongarch_print_operand (FILE *file, rtx op, int letter) fputs ("dbar\t0", file); break; + case 'h': + if (code == HIGH) + op = XEXP (op, 0); + loongarch_print_operand_reloc (file, op, true /* hi_reloc */); + break; + case 'i': if (code != REG) fputs ("i", file); break; + case 'L': + loongarch_print_operand_reloc (file, op, false /* lo_reloc */); + break; + case 'm': if (CONST_INT_P (op)) fprintf (file, HOST_WIDE_INT_PRINT_DEC, INTVAL (op) - 1); @@ -4517,6 +4836,11 @@ loongarch_print_operand_address (FILE *file, machine_mode /* mode */, rtx x) reg_names[REGNO (addr.offset)]); return; + case ADDRESS_LO_SUM: + fprintf (file, "%s,", reg_names[REGNO (addr.reg)]); + loongarch_print_operand_reloc (file, addr.offset, false /* hi_reloc */); + return; + case ADDRESS_CONST_INT: fprintf (file, "%s,", reg_names[GP_REG_FIRST]); output_addr_const (file, x); @@ -5891,6 +6215,12 @@ loongarch_starting_frame_offset (void) #undef TARGET_TRAMPOLINE_INIT #define TARGET_TRAMPOLINE_INIT loongarch_trampoline_init +#undef TARGET_MIN_ANCHOR_OFFSET +#define TARGET_MIN_ANCHOR_OFFSET (-IMM_REACH/2) + +#undef TARGET_MAX_ANCHOR_OFFSET +#define TARGET_MAX_ANCHOR_OFFSET (IMM_REACH/2-1) + #undef TARGET_ATOMIC_ASSIGN_EXPAND_FENV #define TARGET_ATOMIC_ASSIGN_EXPAND_FENV loongarch_atomic_assign_expand_fenv diff --git a/gcc/config/loongarch/loongarch.md b/gcc/config/loongarch/loongarch.md index 376879fbc..6b6df22a5 100644 --- a/gcc/config/loongarch/loongarch.md +++ b/gcc/config/loongarch/loongarch.md @@ -57,6 +57,10 @@ ;; CRC UNSPEC_CRC UNSPEC_CRCC + + UNSPEC_LOAD_FROM_GOT + UNSPEC_ORI_L_LO12 + UNSPEC_TLS_LOW ]) (define_c_enum "unspecv" [ @@ -1743,73 +1747,6 @@ [(set_attr "move_type" "move,load,store") (set_attr "mode" "DF")]) - -;; 128-bit integer moves - -(define_expand "movti" - [(set (match_operand:TI 0) - (match_operand:TI 1))] - "TARGET_64BIT" -{ - if (loongarch_legitimize_move (TImode, operands[0], operands[1])) - DONE; -}) - -(define_insn "*movti" - [(set (match_operand:TI 0 "nonimmediate_operand" "=r,r,r,m") - (match_operand:TI 1 "move_operand" "r,i,m,rJ"))] - "TARGET_64BIT - && (register_operand (operands[0], TImode) - || reg_or_0_operand (operands[1], TImode))" - { return loongarch_output_move (operands[0], operands[1]); } - [(set_attr "move_type" "move,const,load,store") - (set (attr "mode") - (if_then_else (eq_attr "move_type" "imul") - (const_string "SI") - (const_string "TI")))]) - -;; 128-bit floating point moves - -(define_expand "movtf" - [(set (match_operand:TF 0) - (match_operand:TF 1))] - "TARGET_64BIT" -{ - if (loongarch_legitimize_move (TFmode, operands[0], operands[1])) - DONE; -}) - -;; This pattern handles both hard- and soft-float cases. -(define_insn "*movtf" - [(set (match_operand:TF 0 "nonimmediate_operand" "=r,r,m,f,r,f,m") - (match_operand:TF 1 "move_operand" "rG,m,rG,rG,f,m,f"))] - "TARGET_64BIT - && (register_operand (operands[0], TFmode) - || reg_or_0_operand (operands[1], TFmode))" - "#" - [(set_attr "move_type" "move,load,store,mgtf,mftg,fpload,fpstore") - (set_attr "mode" "TF")]) - -(define_split - [(set (match_operand:MOVE64 0 "nonimmediate_operand") - (match_operand:MOVE64 1 "move_operand"))] - "reload_completed && loongarch_split_move_insn_p (operands[0], operands[1])" - [(const_int 0)] -{ - loongarch_split_move_insn (operands[0], operands[1], curr_insn); - DONE; -}) - -(define_split - [(set (match_operand:MOVE128 0 "nonimmediate_operand") - (match_operand:MOVE128 1 "move_operand"))] - "reload_completed && loongarch_split_move_insn_p (operands[0], operands[1])" - [(const_int 0)] -{ - loongarch_split_move_insn (operands[0], operands[1], curr_insn); - DONE; -}) - ;; Emit a doubleword move in which exactly one of the operands is ;; a floating-point register. We can't just emit two normal moves ;; because of the constraints imposed by the FPU register model; @@ -1938,6 +1875,57 @@ [(set_attr "type" "arith") (set_attr "mode" "DI")]) +;; Instructions for adding the low 12 bits of an address to a register. +;; Operand 2 is the address: loongarch_print_operand works out which relocation +;; should be applied. + +(define_insn "*low<mode>" + [(set (match_operand:P 0 "register_operand" "=r") + (lo_sum:P (match_operand:P 1 "register_operand" " r") + (match_operand:P 2 "symbolic_operand" "")))] + "TARGET_EXPLICIT_RELOCS" + "addi.<d>\t%0,%1,%L2" + [(set_attr "type" "arith") + (set_attr "mode" "<MODE>")]) + +(define_insn "@tls_low<mode>" + [(set (match_operand:P 0 "register_operand" "=r") + (unspec:P [(mem:P (lo_sum:P (match_operand:P 1 "register_operand" "r") + (match_operand:P 2 "symbolic_operand" "")))] + UNSPEC_TLS_LOW))] + "TARGET_EXPLICIT_RELOCS" + "addi.<d>\t%0,%1,%L2" + [(set_attr "type" "arith") + (set_attr "mode" "<MODE>")]) + +;; Instructions for loading address from GOT entry. +;; operands[1] is pc plus the high half of the address difference with the got +;; entry; +;; operands[2] is low 12 bits for low 12 bit of the address difference with the +;; got entry. +;; loongarch_print_operand works out which relocation should be applied. + +(define_insn "@ld_from_got<mode>" + [(set (match_operand:P 0 "register_operand" "=r") + (unspec:P [(mem:P (lo_sum:P + (match_operand:P 1 "register_operand" "r") + (match_operand:P 2 "symbolic_operand")))] + UNSPEC_LOAD_FROM_GOT))] + "TARGET_EXPLICIT_RELOCS" + "ld.<d>\t%0,%1,%L2" + [(set_attr "type" "move")] +) + +(define_insn "@ori_l_lo12<mode>" + [(set (match_operand:P 0 "register_operand" "=r") + (unspec:P [(match_operand:P 1 "register_operand" "r") + (match_operand:P 2 "symbolic_operand")] + UNSPEC_ORI_L_LO12))] + "" + "ori\t%0,%1,%L2" + [(set_attr "type" "move")] +) + ;; Convert floating-point numbers to integers (define_insn "frint_<fmt>" [(set (match_operand:ANYF 0 "register_operand" "=f") diff --git a/gcc/config/loongarch/loongarch.opt b/gcc/config/loongarch/loongarch.opt index 3ff0d8604..7a8c5b444 100644 --- a/gcc/config/loongarch/loongarch.opt +++ b/gcc/config/loongarch/loongarch.opt @@ -161,6 +161,10 @@ mmax-inline-memcpy-size= Target Joined RejectNegative UInteger Var(loongarch_max_inline_memcpy_size) Init(1024) -mmax-inline-memcpy-size=SIZE Set the max size of memcpy to inline, default is 1024. +mexplicit-relocs +Target Var(TARGET_EXPLICIT_RELOCS) Init(1) +Use %reloc() assembly operators. + ; The code model option names for -mcmodel. Enum Name(cmodel) Type(int) diff --git a/gcc/config/loongarch/predicates.md b/gcc/config/loongarch/predicates.md index 2243ef71c..cd3528c7c 100644 --- a/gcc/config/loongarch/predicates.md +++ b/gcc/config/loongarch/predicates.md @@ -110,6 +110,10 @@ (define_predicate "const_call_insn_operand" (match_code "const,symbol_ref,label_ref") { + /* Split symbol to high and low if return false. + If defined TARGET_CMODEL_LARGE, all symbol would be splited, + else if offset is not zero, the symbol would be splited. */ + enum loongarch_symbol_type symbol_type; loongarch_symbolic_constant_p (op, &symbol_type); @@ -125,7 +129,7 @@ return 1; case SYMBOL_GOT_DISP: - if (!flag_plt) + if (TARGET_CMODEL_LARGE || !flag_plt) return false; else return 1; @@ -213,7 +217,19 @@ case CONST: case SYMBOL_REF: case LABEL_REF: - return loongarch_symbolic_constant_p (op, &symbol_type); + return (loongarch_symbolic_constant_p (op, &symbol_type) + && (!TARGET_EXPLICIT_RELOCS + || !loongarch_split_symbol_type (symbol_type))); + + case HIGH: + /* '-mno-explicit-relocs' don't generate high/low pairs. */ + if (!TARGET_EXPLICIT_RELOCS) + return false; + + op = XEXP (op, 0); + return (loongarch_symbolic_constant_p (op, &symbol_type) + && loongarch_split_symbol_type (symbol_type)); + default: return true; } diff --git a/gcc/testsuite/gcc.target/loongarch/func-call-1.c b/gcc/testsuite/gcc.target/loongarch/func-call-1.c index b0482761a..01b8ea23f 100644 --- a/gcc/testsuite/gcc.target/loongarch/func-call-1.c +++ b/gcc/testsuite/gcc.target/loongarch/func-call-1.c @@ -1,5 +1,5 @@ /* { dg-do compile } */ -/* { dg-options "-mabi=lp64d -O0 -fpic -fplt" } */ +/* { dg-options "-mabi=lp64d -O0 -fpic -fplt -mno-explicit-relocs" } */ /* { dg-final { scan-assembler "test:.*bl\t%plt\\(g\\)\n" } } */ /* { dg-final { scan-assembler "test1:.*bl\t%plt\\(f\\)\n" } } */ /* { dg-final { scan-assembler "test2:.*bl\tl\n" } } */ diff --git a/gcc/testsuite/gcc.target/loongarch/func-call-2.c b/gcc/testsuite/gcc.target/loongarch/func-call-2.c index f5e061c29..4565baaec 100644 --- a/gcc/testsuite/gcc.target/loongarch/func-call-2.c +++ b/gcc/testsuite/gcc.target/loongarch/func-call-2.c @@ -1,5 +1,5 @@ /* { dg-do compile } */ -/* { dg-options "-mabi=lp64d -O0 -fno-pic -fplt" } */ +/* { dg-options "-mabi=lp64d -O0 -fno-pic -fplt -mno-explicit-relocs" } */ /* { dg-final { scan-assembler "test:.*bl\t%plt\\(g\\)\n" } } */ /* { dg-final { scan-assembler "test1:.*bl\tf\n" } } */ /* { dg-final { scan-assembler "test2:.*bl\tl\n" } } */ diff --git a/gcc/testsuite/gcc.target/loongarch/func-call-3.c b/gcc/testsuite/gcc.target/loongarch/func-call-3.c index 75082c574..4f669a029 100644 --- a/gcc/testsuite/gcc.target/loongarch/func-call-3.c +++ b/gcc/testsuite/gcc.target/loongarch/func-call-3.c @@ -1,5 +1,5 @@ /* { dg-do compile } */ -/* { dg-options "-mabi=lp64d -O0 -fpic -fno-plt" } */ +/* { dg-options "-mabi=lp64d -O0 -fpic -fno-plt -mno-explicit-relocs" } */ /* { dg-final { scan-assembler "test:.*la\.global\t.*g\n\tjirl" } } */ /* { dg-final { scan-assembler "test1:.*la\.global\t.*f\n\tjirl" } } */ /* { dg-final { scan-assembler "test2:.*bl\tl\n" } } */ diff --git a/gcc/testsuite/gcc.target/loongarch/func-call-4.c b/gcc/testsuite/gcc.target/loongarch/func-call-4.c index e8a839549..943adb640 100644 --- a/gcc/testsuite/gcc.target/loongarch/func-call-4.c +++ b/gcc/testsuite/gcc.target/loongarch/func-call-4.c @@ -1,5 +1,5 @@ /* { dg-do compile } */ -/* { dg-options "-mabi=lp64d -O0 -fno-pic -fno-plt" } */ +/* { dg-options "-mabi=lp64d -O0 -fno-pic -fno-plt -mno-explicit-relocs" } */ /* { dg-final { scan-assembler "test:.*la\.global\t.*g\n\tjirl" } } */ /* { dg-final { scan-assembler "test1:.*bl\tf\n" } } */ /* { dg-final { scan-assembler "test2:.*bl\tl\n" } } */ diff --git a/gcc/testsuite/gcc.target/loongarch/func-call-5.c b/gcc/testsuite/gcc.target/loongarch/func-call-5.c new file mode 100644 index 000000000..2c2a1c8a1 --- /dev/null +++ b/gcc/testsuite/gcc.target/loongarch/func-call-5.c @@ -0,0 +1,33 @@ +/* { dg-do compile } */ +/* { dg-options "-mabi=lp64d -O0 -fpic -fplt -mexplicit-relocs" } */ +/* { dg-final { scan-assembler "test:.*bl\t%plt\\(g\\)\n" } } */ +/* { dg-final { scan-assembler "test1:.*bl\t%plt\\(f\\)\n" } } */ +/* { dg-final { scan-assembler "test2:.*bl\tl\n" } } */ + +extern void g (void); + +void +f (void) +{} + +static void +l (void) +{} + +void +test (void) +{ + g (); +} + +void +test1 (void) +{ + f (); +} + +void +test2 (void) +{ + l (); +} diff --git a/gcc/testsuite/gcc.target/loongarch/func-call-6.c b/gcc/testsuite/gcc.target/loongarch/func-call-6.c new file mode 100644 index 000000000..4b0e4266e --- /dev/null +++ b/gcc/testsuite/gcc.target/loongarch/func-call-6.c @@ -0,0 +1,33 @@ +/* { dg-do compile } */ +/* { dg-options "-mabi=lp64d -O0 -fno-pic -fplt -mexplicit-relocs" } */ +/* { dg-final { scan-assembler "test:.*bl\t%plt\\(g\\)\n" } } */ +/* { dg-final { scan-assembler "test1:.*bl\tf\n" } } */ +/* { dg-final { scan-assembler "test2:.*bl\tl\n" } } */ + +extern void g (void); + +void +f (void) +{} + +static void +l (void) +{} + +void +test (void) +{ + g (); +} + +void +test1 (void) +{ + f (); +} + +void +test2 (void) +{ + l (); +} diff --git a/gcc/testsuite/gcc.target/loongarch/func-call-7.c b/gcc/testsuite/gcc.target/loongarch/func-call-7.c new file mode 100644 index 000000000..51792711f --- /dev/null +++ b/gcc/testsuite/gcc.target/loongarch/func-call-7.c @@ -0,0 +1,34 @@ +/* { dg-do compile } */ +/* { dg-options "-mabi=lp64d -O0 -fpic -fno-plt -mexplicit-relocs" } */ +/* { dg-final { scan-assembler "test:.*pcalau12i\t.*%got_pc_hi20\\(g\\)\n\tld\.d\t.*%got_pc_lo12\\(g\\)\n\tjirl" } } */ +/* { dg-final { scan-assembler "test1:.*pcalau12i\t.*%got_pc_hi20\\(f\\)\n\tld\.d\t.*%got_pc_lo12\\(f\\)\n\tjirl" } } */ +/* { dg-final { scan-assembler "test2:.*bl\tl\n" } } */ + + +extern void g (void); + +void +f (void) +{} + +static void +l (void) +{} + +void +test (void) +{ + g (); +} + +void +test1 (void) +{ + f (); +} + +void +test2 (void) +{ + l (); +} diff --git a/gcc/testsuite/gcc.target/loongarch/func-call-8.c b/gcc/testsuite/gcc.target/loongarch/func-call-8.c new file mode 100644 index 000000000..330140d88 --- /dev/null +++ b/gcc/testsuite/gcc.target/loongarch/func-call-8.c @@ -0,0 +1,33 @@ +/* { dg-do compile } */ +/* { dg-options "-mabi=lp64d -O0 -fno-pic -fno-plt -mexplicit-relocs" } */ +/* { dg-final { scan-assembler "test:.*pcalau12i\t.*%got_pc_hi20\\(g\\)\n\tld\.d\t.*%got_pc_lo12\\(g\\)\n\tjirl" } } */ +/* { dg-final { scan-assembler "test1:.*bl\tf\n" } } */ +/* { dg-final { scan-assembler "test2:.*bl\tl\n" } } */ + +extern void g (void); + +void +f (void) +{} + +static void +l (void) +{} + +void +test (void) +{ + g (); +} + +void +test1 (void) +{ + f (); +} + +void +test2 (void) +{ + l (); +} diff --git a/gcc/testsuite/gcc.target/loongarch/relocs-symbol-noaddend.c b/gcc/testsuite/gcc.target/loongarch/relocs-symbol-noaddend.c new file mode 100644 index 000000000..bfcc9bc33 --- /dev/null +++ b/gcc/testsuite/gcc.target/loongarch/relocs-symbol-noaddend.c @@ -0,0 +1,23 @@ +/* { dg-do compile } */ +/* { dg-options "-mabi=lp64d -mexplicit-relocs -fno-pic -O2" } */ +/* { dg-final { scan-assembler "pcalau12i.*%pc_hi20\\(\.LANCHOR0\\)\n" } } */ +/* { dg-final { scan-assembler "addi\.d.*%pc_lo12\\(\.LANCHOR0\\)\n" } } */ +/* { dg-final { scan-assembler "ldptr.d\t\\\$r4,.*,0\n" } } */ +/* { dg-final { scan-assembler "ld.d\t\\\$r5,.*,8\n" } } */ +/* { dg-final { scan-assembler-not "\.LANCHOR0+8" } } */ + + +struct S +{ + char *a; + unsigned short int b; +}; + +struct S s1; + +void test(struct S); +void test1(void) +{ + test(s1); +} + -- 2.33.0
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