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File _service:tar_scm:0162-Backport-SME-aarch64-Use-SVE-s-RDVL-instruction.patch of Package gcc
From 46310765c05cde8732e07bfb0df9f0ec25a34018 Mon Sep 17 00:00:00 2001 From: Richard Sandiford <richard.sandiford@arm.com> Date: Tue, 5 Dec 2023 10:11:18 +0000 Subject: [PATCH 063/157] [Backport][SME] aarch64: Use SVE's RDVL instruction Reference: https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=80f47d7bbe38234e1530d27fe5c2f130223ca7a0 We didn't previously use SVE's RDVL instruction, since the CNT* forms are preferred and provide most of the range. However, there are some cases that RDVL can handle and CNT* can't, and using RDVL-like instructions becomes important for SME. gcc/ * config/aarch64/aarch64-protos.h (aarch64_sve_rdvl_immediate_p) (aarch64_output_sve_rdvl): Declare. * config/aarch64/aarch64.cc (aarch64_sve_cnt_factor_p): New function, split out from... (aarch64_sve_cnt_immediate_p): ...here. (aarch64_sve_rdvl_factor_p): New function. (aarch64_sve_rdvl_immediate_p): Likewise. (aarch64_output_sve_rdvl): Likewise. (aarch64_offset_temporaries): Rewrite the SVE handling to use RDVL for some cases. (aarch64_expand_mov_immediate): Handle RDVL immediates. (aarch64_mov_operand_p): Likewise. * config/aarch64/constraints.md (Usr): New constraint. * config/aarch64/aarch64.md (*mov<SHORT:mode>_aarch64): Add an RDVL alternative. (*movsi_aarch64, *movdi_aarch64): Likewise. gcc/testsuite/ * gcc.target/aarch64/sve/acle/asm/cntb.c: Tweak expected output. * gcc.target/aarch64/sve/acle/asm/cnth.c: Likewise. * gcc.target/aarch64/sve/acle/asm/cntw.c: Likewise. * gcc.target/aarch64/sve/acle/asm/cntd.c: Likewise. * gcc.target/aarch64/sve/acle/asm/prfb.c: Likewise. * gcc.target/aarch64/sve/acle/asm/prfh.c: Likewise. * gcc.target/aarch64/sve/acle/asm/prfw.c: Likewise. * gcc.target/aarch64/sve/acle/asm/prfd.c: Likewise. * gcc.target/aarch64/sve/loop_add_4.c: Expect RDVL to be used to calculate the -17 and 17 factors. * gcc.target/aarch64/sve/pcs/stack_clash_1.c: Likewise the 18 factor. --- gcc/config/aarch64/aarch64-protos.h | 2 + gcc/config/aarch64/aarch64.cc | 191 ++++++++++++------ gcc/config/aarch64/aarch64.md | 3 + gcc/config/aarch64/constraints.md | 6 + .../gcc.target/aarch64/sve/acle/asm/cntb.c | 71 +++++-- .../gcc.target/aarch64/sve/acle/asm/cntd.c | 12 +- .../gcc.target/aarch64/sve/acle/asm/cnth.c | 20 +- .../gcc.target/aarch64/sve/acle/asm/cntw.c | 16 +- .../gcc.target/aarch64/sve/acle/asm/prfb.c | 6 +- .../gcc.target/aarch64/sve/acle/asm/prfd.c | 4 +- .../gcc.target/aarch64/sve/acle/asm/prfh.c | 4 +- .../gcc.target/aarch64/sve/acle/asm/prfw.c | 4 +- .../gcc.target/aarch64/sve/loop_add_4.c | 6 +- .../aarch64/sve/pcs/stack_clash_1.c | 3 +- 14 files changed, 225 insertions(+), 123 deletions(-) diff --git a/gcc/config/aarch64/aarch64-protos.h b/gcc/config/aarch64/aarch64-protos.h index 3ff1a0163..14a568140 100644 --- a/gcc/config/aarch64/aarch64-protos.h +++ b/gcc/config/aarch64/aarch64-protos.h @@ -802,6 +802,7 @@ bool aarch64_sve_mode_p (machine_mode); HOST_WIDE_INT aarch64_fold_sve_cnt_pat (aarch64_svpattern, unsigned int); bool aarch64_sve_cnt_immediate_p (rtx); bool aarch64_sve_scalar_inc_dec_immediate_p (rtx); +bool aarch64_sve_rdvl_immediate_p (rtx); bool aarch64_sve_addvl_addpl_immediate_p (rtx); bool aarch64_sve_vector_inc_dec_immediate_p (rtx); int aarch64_add_offset_temporaries (rtx); @@ -814,6 +815,7 @@ char *aarch64_output_sve_prefetch (const char *, rtx, const char *); char *aarch64_output_sve_cnt_immediate (const char *, const char *, rtx); char *aarch64_output_sve_cnt_pat_immediate (const char *, const char *, rtx *); char *aarch64_output_sve_scalar_inc_dec (rtx); +char *aarch64_output_sve_rdvl (rtx); char *aarch64_output_sve_addvl_addpl (rtx); char *aarch64_output_sve_vector_inc_dec (const char *, rtx); char *aarch64_output_scalar_simd_mov_immediate (rtx, scalar_int_mode); diff --git a/gcc/config/aarch64/aarch64.cc b/gcc/config/aarch64/aarch64.cc index acb659f53..4194dfc70 100644 --- a/gcc/config/aarch64/aarch64.cc +++ b/gcc/config/aarch64/aarch64.cc @@ -5520,6 +5520,18 @@ aarch64_fold_sve_cnt_pat (aarch64_svpattern pattern, unsigned int nelts_per_vq) return -1; } +/* Return true if a single CNT[BHWD] instruction can multiply FACTOR + by the number of 128-bit quadwords in an SVE vector. */ + +static bool +aarch64_sve_cnt_factor_p (HOST_WIDE_INT factor) +{ + /* The coefficient must be [1, 16] * {2, 4, 8, 16}. */ + return (IN_RANGE (factor, 2, 16 * 16) + && (factor & 1) == 0 + && factor <= 16 * (factor & -factor)); +} + /* Return true if we can move VALUE into a register using a single CNT[BHWD] instruction. */ @@ -5527,11 +5539,7 @@ static bool aarch64_sve_cnt_immediate_p (poly_int64 value) { HOST_WIDE_INT factor = value.coeffs[0]; - /* The coefficient must be [1, 16] * {2, 4, 8, 16}. */ - return (value.coeffs[1] == factor - && IN_RANGE (factor, 2, 16 * 16) - && (factor & 1) == 0 - && factor <= 16 * (factor & -factor)); + return value.coeffs[1] == factor && aarch64_sve_cnt_factor_p (factor); } /* Likewise for rtx X. */ @@ -5647,6 +5655,50 @@ aarch64_output_sve_scalar_inc_dec (rtx offset) -offset_value.coeffs[1], 0); } +/* Return true if a single RDVL instruction can multiply FACTOR by the + number of 128-bit quadwords in an SVE vector. */ + +static bool +aarch64_sve_rdvl_factor_p (HOST_WIDE_INT factor) +{ + return (multiple_p (factor, 16) + && IN_RANGE (factor, -32 * 16, 31 * 16)); +} + +/* Return true if we can move VALUE into a register using a single + RDVL instruction. */ + +static bool +aarch64_sve_rdvl_immediate_p (poly_int64 value) +{ + HOST_WIDE_INT factor = value.coeffs[0]; + return value.coeffs[1] == factor && aarch64_sve_rdvl_factor_p (factor); +} + +/* Likewise for rtx X. */ + +bool +aarch64_sve_rdvl_immediate_p (rtx x) +{ + poly_int64 value; + return poly_int_rtx_p (x, &value) && aarch64_sve_rdvl_immediate_p (value); +} + +/* Return the asm string for moving RDVL immediate OFFSET into register + operand 0. */ + +char * +aarch64_output_sve_rdvl (rtx offset) +{ + static char buffer[sizeof ("rdvl\t%x0, #-") + 3 * sizeof (int)]; + poly_int64 offset_value = rtx_to_poly_int64 (offset); + gcc_assert (aarch64_sve_rdvl_immediate_p (offset_value)); + + int factor = offset_value.coeffs[1]; + snprintf (buffer, sizeof (buffer), "rdvl\t%%x0, #%d", factor / 16); + return buffer; +} + /* Return true if we can add VALUE to a register using a single ADDVL or ADDPL instruction. */ @@ -6227,13 +6279,13 @@ aarch64_offset_temporaries (bool add_p, poly_int64 offset) count += 1; else if (factor != 0) { - factor = abs (factor); - if (factor > 16 * (factor & -factor)) - /* Need one register for the CNT result and one for the multiplication - factor. If necessary, the second temporary can be reused for the - constant part of the offset. */ + factor /= (HOST_WIDE_INT) least_bit_hwi (factor); + if (!IN_RANGE (factor, -32, 31)) + /* Need one register for the CNT or RDVL result and one for the + multiplication factor. If necessary, the second temporary + can be reused for the constant part of the offset. */ return 2; - /* Need one register for the CNT result (which might then + /* Need one register for the CNT or RDVL result (which might then be shifted). */ count += 1; } @@ -6322,85 +6374,100 @@ aarch64_add_offset (scalar_int_mode mode, rtx dest, rtx src, /* Otherwise use a CNT-based sequence. */ else if (factor != 0) { - /* Use a subtraction if we have a negative factor. */ - rtx_code code = PLUS; - if (factor < 0) - { - factor = -factor; - code = MINUS; - } + /* Calculate CNTB * FACTOR / 16 as CNTB * REL_FACTOR * 2**SHIFT, + with negative shifts indicating a shift right. */ + HOST_WIDE_INT low_bit = least_bit_hwi (factor); + HOST_WIDE_INT rel_factor = factor / low_bit; + int shift = exact_log2 (low_bit) - 4; + gcc_assert (shift >= -4 && (rel_factor & 1) != 0); + + /* Set CODE, VAL and SHIFT so that [+-] VAL * 2**SHIFT is + equal to CNTB * FACTOR / 16, with CODE being the [+-]. - /* Calculate CNTD * FACTOR / 2. First try to fold the division - into the multiplication. */ + We can avoid a multiplication if REL_FACTOR is in the range + of RDVL, although there are then various optimizations that + we can try on top. */ + rtx_code code = PLUS; rtx val; - int shift = 0; - if (factor & 1) - /* Use a right shift by 1. */ - shift = -1; - else - factor /= 2; - HOST_WIDE_INT low_bit = factor & -factor; - if (factor <= 16 * low_bit) + if (IN_RANGE (rel_factor, -32, 31)) { - if (factor > 16 * 8) + /* Try to use an unshifted CNT[BHWD] or RDVL. */ + if (aarch64_sve_cnt_factor_p (factor) + || aarch64_sve_rdvl_factor_p (factor)) + { + val = gen_int_mode (poly_int64 (factor, factor), mode); + shift = 0; + } + /* Try to subtract an unshifted CNT[BHWD]. */ + else if (aarch64_sve_cnt_factor_p (-factor)) { - /* "CNTB Xn, ALL, MUL #FACTOR" is out of range, so calculate - the value with the minimum multiplier and shift it into - position. */ - int extra_shift = exact_log2 (low_bit); - shift += extra_shift; - factor >>= extra_shift; + code = MINUS; + val = gen_int_mode (poly_int64 (-factor, -factor), mode); + shift = 0; } - val = gen_int_mode (poly_int64 (factor * 2, factor * 2), mode); + /* If subtraction is free, prefer to load a positive constant. + In the best case this will fit a shifted CNTB. */ + else if (src != const0_rtx && rel_factor < 0) + { + code = MINUS; + val = gen_int_mode (-rel_factor * BYTES_PER_SVE_VECTOR, mode); + } + /* Otherwise use a shifted RDVL or CNT[BHWD]. */ + else + val = gen_int_mode (rel_factor * BYTES_PER_SVE_VECTOR, mode); } else { - /* Base the factor on LOW_BIT if we can calculate LOW_BIT - directly, since that should increase the chances of being - able to use a shift and add sequence. If LOW_BIT itself - is out of range, just use CNTD. */ - if (low_bit <= 16 * 8) - factor /= low_bit; + /* If we can calculate CNTB << SHIFT directly, prefer to do that, + since it should increase the chances of being able to use + a shift and add sequence for the multiplication. + If CNTB << SHIFT is out of range, stick with the current + shift factor. */ + if (IN_RANGE (low_bit, 2, 16 * 16)) + { + val = gen_int_mode (poly_int64 (low_bit, low_bit), mode); + shift = 0; + } else - low_bit = 1; + val = gen_int_mode (BYTES_PER_SVE_VECTOR, mode); - val = gen_int_mode (poly_int64 (low_bit * 2, low_bit * 2), mode); val = aarch64_force_temporary (mode, temp1, val); + /* Prefer to multiply by a positive factor and subtract rather + than multiply by a negative factor and add, since positive + values are usually easier to move. */ + if (rel_factor < 0 && src != const0_rtx) + { + rel_factor = -rel_factor; + code = MINUS; + } + if (can_create_pseudo_p ()) { - rtx coeff1 = gen_int_mode (factor, mode); + rtx coeff1 = gen_int_mode (rel_factor, mode); val = expand_mult (mode, val, coeff1, NULL_RTX, true, true); } else { - /* Go back to using a negative multiplication factor if we have - no register from which to subtract. */ - if (code == MINUS && src == const0_rtx) - { - factor = -factor; - code = PLUS; - } - rtx coeff1 = gen_int_mode (factor, mode); + rtx coeff1 = gen_int_mode (rel_factor, mode); coeff1 = aarch64_force_temporary (mode, temp2, coeff1); val = gen_rtx_MULT (mode, val, coeff1); } } + /* Multiply by 2 ** SHIFT. */ if (shift > 0) { - /* Multiply by 1 << SHIFT. */ val = aarch64_force_temporary (mode, temp1, val); val = gen_rtx_ASHIFT (mode, val, GEN_INT (shift)); } - else if (shift == -1) + else if (shift < 0) { - /* Divide by 2. */ val = aarch64_force_temporary (mode, temp1, val); - val = gen_rtx_ASHIFTRT (mode, val, const1_rtx); + val = gen_rtx_ASHIFTRT (mode, val, GEN_INT (-shift)); } - /* Calculate SRC +/- CNTD * FACTOR / 2. */ + /* Add the result to SRC or subtract the result from SRC. */ if (src != const0_rtx) { val = aarch64_force_temporary (mode, temp1, val); @@ -7045,7 +7112,9 @@ aarch64_expand_mov_immediate (rtx dest, rtx imm) aarch64_report_sve_required (); return; } - if (base == const0_rtx && aarch64_sve_cnt_immediate_p (offset)) + if (base == const0_rtx + && (aarch64_sve_cnt_immediate_p (offset) + || aarch64_sve_rdvl_immediate_p (offset))) emit_insn (gen_rtx_SET (dest, imm)); else { @@ -21751,7 +21820,9 @@ aarch64_mov_operand_p (rtx x, machine_mode mode) if (SYMBOL_REF_P (x) && mode == DImode && CONSTANT_ADDRESS_P (x)) return true; - if (TARGET_SVE && aarch64_sve_cnt_immediate_p (x)) + if (TARGET_SVE + && (aarch64_sve_cnt_immediate_p (x) + || aarch64_sve_rdvl_immediate_p (x))) return true; return aarch64_classify_symbolic_expression (x) diff --git a/gcc/config/aarch64/aarch64.md b/gcc/config/aarch64/aarch64.md index 5d02da42f..c0977a3da 100644 --- a/gcc/config/aarch64/aarch64.md +++ b/gcc/config/aarch64/aarch64.md @@ -1207,6 +1207,7 @@ [w, D<hq>; neon_move , simd ] << aarch64_output_scalar_simd_mov_immediate (operands[1], <MODE>mode); /* The "mov_imm" type for CNT is just a placeholder. */ [r, Usv ; mov_imm , sve ] << aarch64_output_sve_cnt_immediate ("cnt", "%x0", operands[1]); + [r, Usr ; mov_imm , sve ] << aarch64_output_sve_rdvl (operands[1]); [r, m ; load_4 , * ] ldr<size>\t%w0, %1 [w, m ; load_4 , * ] ldr\t%<size>0, %1 [m, r Z ; store_4 , * ] str<size>\\t%w1, %0 @@ -1265,6 +1266,7 @@ [r , n ; mov_imm , * ,16] # /* The "mov_imm" type for CNT is just a placeholder. */ [r , Usv; mov_imm , sve , 4] << aarch64_output_sve_cnt_immediate ("cnt", "%x0", operands[1]); + [r , Usr; mov_imm , sve, 4] << aarch64_output_sve_rdvl (operands[1]); [r , m ; load_4 , * , 4] ldr\t%w0, %1 [w , m ; load_4 , fp , 4] ldr\t%s0, %1 [m , r Z; store_4 , * , 4] str\t%w1, %0 @@ -1299,6 +1301,7 @@ [r, n ; mov_imm , * ,16] # /* The "mov_imm" type for CNT is just a placeholder. */ [r, Usv; mov_imm , sve , 4] << aarch64_output_sve_cnt_immediate ("cnt", "%x0", operands[1]); + [r, Usr; mov_imm , sve, 4] << aarch64_output_sve_rdvl (operands[1]); [r, m ; load_8 , * , 4] ldr\t%x0, %1 [w, m ; load_8 , fp , 4] ldr\t%d0, %1 [m, r Z; store_8 , * , 4] str\t%x1, %0 diff --git a/gcc/config/aarch64/constraints.md b/gcc/config/aarch64/constraints.md index 750a42fb1..212a73416 100644 --- a/gcc/config/aarch64/constraints.md +++ b/gcc/config/aarch64/constraints.md @@ -214,6 +214,12 @@ (and (match_code "const_int") (match_test "aarch64_high_bits_all_ones_p (ival)"))) +(define_constraint "Usr" + "@internal + A constraint that matches a value produced by RDVL." + (and (match_code "const_poly_int") + (match_test "aarch64_sve_rdvl_immediate_p (op)"))) + (define_constraint "Usv" "@internal A constraint that matches a VG-based constant that can be loaded by diff --git a/gcc/testsuite/gcc.target/aarch64/sve/acle/asm/cntb.c b/gcc/testsuite/gcc.target/aarch64/sve/acle/asm/cntb.c index 8b8fe8e4f..a22d8a28d 100644 --- a/gcc/testsuite/gcc.target/aarch64/sve/acle/asm/cntb.c +++ b/gcc/testsuite/gcc.target/aarch64/sve/acle/asm/cntb.c @@ -51,19 +51,24 @@ PROTO (cntb_15, uint64_t, ()) { return svcntb () * 15; } */ PROTO (cntb_16, uint64_t, ()) { return svcntb () * 16; } -/* Other sequences would be OK. */ /* ** cntb_17: -** cntb x0, all, mul #16 -** incb x0 +** rdvl x0, #17 ** ret */ PROTO (cntb_17, uint64_t, ()) { return svcntb () * 17; } +/* +** cntb_31: +** rdvl x0, #31 +** ret +*/ +PROTO (cntb_31, uint64_t, ()) { return svcntb () * 31; } + /* ** cntb_32: -** cntd (x[0-9]+) -** lsl x0, \1, 8 +** cntb (x[0-9]+) +** lsl x0, \1, 5 ** ret */ PROTO (cntb_32, uint64_t, ()) { return svcntb () * 32; } @@ -80,16 +85,16 @@ PROTO (cntb_33, uint64_t, ()) { return svcntb () * 33; } /* ** cntb_64: -** cntd (x[0-9]+) -** lsl x0, \1, 9 +** cntb (x[0-9]+) +** lsl x0, \1, 6 ** ret */ PROTO (cntb_64, uint64_t, ()) { return svcntb () * 64; } /* ** cntb_128: -** cntd (x[0-9]+) -** lsl x0, \1, 10 +** cntb (x[0-9]+) +** lsl x0, \1, 7 ** ret */ PROTO (cntb_128, uint64_t, ()) { return svcntb () * 128; } @@ -106,46 +111,70 @@ PROTO (cntb_129, uint64_t, ()) { return svcntb () * 129; } /* ** cntb_m1: -** cntb (x[0-9]+) -** neg x0, \1 +** rdvl x0, #-1 ** ret */ PROTO (cntb_m1, uint64_t, ()) { return -svcntb (); } /* ** cntb_m13: -** cntb (x[0-9]+), all, mul #13 -** neg x0, \1 +** rdvl x0, #-13 ** ret */ PROTO (cntb_m13, uint64_t, ()) { return -svcntb () * 13; } /* ** cntb_m15: -** cntb (x[0-9]+), all, mul #15 -** neg x0, \1 +** rdvl x0, #-15 ** ret */ PROTO (cntb_m15, uint64_t, ()) { return -svcntb () * 15; } /* ** cntb_m16: -** cntb (x[0-9]+), all, mul #16 -** neg x0, \1 +** rdvl x0, #-16 ** ret */ PROTO (cntb_m16, uint64_t, ()) { return -svcntb () * 16; } -/* Other sequences would be OK. */ /* ** cntb_m17: -** cntb x0, all, mul #16 -** incb x0 -** neg x0, x0 +** rdvl x0, #-17 ** ret */ PROTO (cntb_m17, uint64_t, ()) { return -svcntb () * 17; } +/* +** cntb_m32: +** rdvl x0, #-32 +** ret +*/ +PROTO (cntb_m32, uint64_t, ()) { return -svcntb () * 32; } + +/* +** cntb_m33: +** rdvl x0, #-32 +** decb x0 +** ret +*/ +PROTO (cntb_m33, uint64_t, ()) { return -svcntb () * 33; } + +/* +** cntb_m34: +** rdvl (x[0-9]+), #-17 +** lsl x0, \1, #?1 +** ret +*/ +PROTO (cntb_m34, uint64_t, ()) { return -svcntb () * 34; } + +/* +** cntb_m64: +** rdvl (x[0-9]+), #-1 +** lsl x0, \1, #?6 +** ret +*/ +PROTO (cntb_m64, uint64_t, ()) { return -svcntb () * 64; } + /* ** incb_1: ** incb x0 diff --git a/gcc/testsuite/gcc.target/aarch64/sve/acle/asm/cntd.c b/gcc/testsuite/gcc.target/aarch64/sve/acle/asm/cntd.c index 0d0ed4849..090a643b4 100644 --- a/gcc/testsuite/gcc.target/aarch64/sve/acle/asm/cntd.c +++ b/gcc/testsuite/gcc.target/aarch64/sve/acle/asm/cntd.c @@ -54,8 +54,8 @@ PROTO (cntd_16, uint64_t, ()) { return svcntd () * 16; } /* Other sequences would be OK. */ /* ** cntd_17: -** cntb x0, all, mul #2 -** incd x0 +** rdvl (x[0-9]+), #17 +** asr x0, \1, 3 ** ret */ PROTO (cntd_17, uint64_t, ()) { return svcntd () * 17; } @@ -107,8 +107,7 @@ PROTO (cntd_m15, uint64_t, ()) { return -svcntd () * 15; } /* ** cntd_m16: -** cntb (x[0-9]+), all, mul #2 -** neg x0, \1 +** rdvl x0, #-2 ** ret */ PROTO (cntd_m16, uint64_t, ()) { return -svcntd () * 16; } @@ -116,9 +115,8 @@ PROTO (cntd_m16, uint64_t, ()) { return -svcntd () * 16; } /* Other sequences would be OK. */ /* ** cntd_m17: -** cntb x0, all, mul #2 -** incd x0 -** neg x0, x0 +** rdvl (x[0-9]+), #-17 +** asr x0, \1, 3 ** ret */ PROTO (cntd_m17, uint64_t, ()) { return -svcntd () * 17; } diff --git a/gcc/testsuite/gcc.target/aarch64/sve/acle/asm/cnth.c b/gcc/testsuite/gcc.target/aarch64/sve/acle/asm/cnth.c index c29930f15..1a4e7dc0e 100644 --- a/gcc/testsuite/gcc.target/aarch64/sve/acle/asm/cnth.c +++ b/gcc/testsuite/gcc.target/aarch64/sve/acle/asm/cnth.c @@ -54,8 +54,8 @@ PROTO (cnth_16, uint64_t, ()) { return svcnth () * 16; } /* Other sequences would be OK. */ /* ** cnth_17: -** cntb x0, all, mul #8 -** inch x0 +** rdvl (x[0-9]+), #17 +** asr x0, \1, 1 ** ret */ PROTO (cnth_17, uint64_t, ()) { return svcnth () * 17; } @@ -69,16 +69,16 @@ PROTO (cnth_32, uint64_t, ()) { return svcnth () * 32; } /* ** cnth_64: -** cntd (x[0-9]+) -** lsl x0, \1, 8 +** cntb (x[0-9]+) +** lsl x0, \1, 5 ** ret */ PROTO (cnth_64, uint64_t, ()) { return svcnth () * 64; } /* ** cnth_128: -** cntd (x[0-9]+) -** lsl x0, \1, 9 +** cntb (x[0-9]+) +** lsl x0, \1, 6 ** ret */ PROTO (cnth_128, uint64_t, ()) { return svcnth () * 128; } @@ -109,8 +109,7 @@ PROTO (cnth_m15, uint64_t, ()) { return -svcnth () * 15; } /* ** cnth_m16: -** cntb (x[0-9]+), all, mul #8 -** neg x0, \1 +** rdvl x0, #-8 ** ret */ PROTO (cnth_m16, uint64_t, ()) { return -svcnth () * 16; } @@ -118,9 +117,8 @@ PROTO (cnth_m16, uint64_t, ()) { return -svcnth () * 16; } /* Other sequences would be OK. */ /* ** cnth_m17: -** cntb x0, all, mul #8 -** inch x0 -** neg x0, x0 +** rdvl (x[0-9]+), #-17 +** asr x0, \1, 1 ** ret */ PROTO (cnth_m17, uint64_t, ()) { return -svcnth () * 17; } diff --git a/gcc/testsuite/gcc.target/aarch64/sve/acle/asm/cntw.c b/gcc/testsuite/gcc.target/aarch64/sve/acle/asm/cntw.c index e26cc67a4..9d1697690 100644 --- a/gcc/testsuite/gcc.target/aarch64/sve/acle/asm/cntw.c +++ b/gcc/testsuite/gcc.target/aarch64/sve/acle/asm/cntw.c @@ -54,8 +54,8 @@ PROTO (cntw_16, uint64_t, ()) { return svcntw () * 16; } /* Other sequences would be OK. */ /* ** cntw_17: -** cntb x0, all, mul #4 -** incw x0 +** rdvl (x[0-9]+), #17 +** asr x0, \1, 2 ** ret */ PROTO (cntw_17, uint64_t, ()) { return svcntw () * 17; } @@ -76,8 +76,8 @@ PROTO (cntw_64, uint64_t, ()) { return svcntw () * 64; } /* ** cntw_128: -** cntd (x[0-9]+) -** lsl x0, \1, 8 +** cntb (x[0-9]+) +** lsl x0, \1, 5 ** ret */ PROTO (cntw_128, uint64_t, ()) { return svcntw () * 128; } @@ -108,8 +108,7 @@ PROTO (cntw_m15, uint64_t, ()) { return -svcntw () * 15; } /* ** cntw_m16: -** cntb (x[0-9]+), all, mul #4 -** neg x0, \1 +** rdvl (x[0-9]+), #-4 ** ret */ PROTO (cntw_m16, uint64_t, ()) { return -svcntw () * 16; } @@ -117,9 +116,8 @@ PROTO (cntw_m16, uint64_t, ()) { return -svcntw () * 16; } /* Other sequences would be OK. */ /* ** cntw_m17: -** cntb x0, all, mul #4 -** incw x0 -** neg x0, x0 +** rdvl (x[0-9]+), #-17 +** asr x0, \1, 2 ** ret */ PROTO (cntw_m17, uint64_t, ()) { return -svcntw () * 17; } diff --git a/gcc/testsuite/gcc.target/aarch64/sve/acle/asm/prfb.c b/gcc/testsuite/gcc.target/aarch64/sve/acle/asm/prfb.c index c90730a03..94cd3a066 100644 --- a/gcc/testsuite/gcc.target/aarch64/sve/acle/asm/prfb.c +++ b/gcc/testsuite/gcc.target/aarch64/sve/acle/asm/prfb.c @@ -218,8 +218,8 @@ TEST_PREFETCH (prfb_vnum_31, uint16_t, /* ** prfb_vnum_32: -** cntd (x[0-9]+) -** lsl (x[0-9]+), \1, #?8 +** cntb (x[0-9]+) +** lsl (x[0-9]+), \1, #?5 ** add (x[0-9]+), (\2, x0|x0, \2) ** prfb pldl1keep, p0, \[\3\] ** ret @@ -240,7 +240,7 @@ TEST_PREFETCH (prfb_vnum_m32, uint16_t, /* ** prfb_vnum_m33: ** ... -** prfb pldl1keep, p0, \[x[0-9]+\] +** prfb pldl1keep, p0, \[x[0-9]+(, x[0-9]+)?\] ** ret */ TEST_PREFETCH (prfb_vnum_m33, uint16_t, diff --git a/gcc/testsuite/gcc.target/aarch64/sve/acle/asm/prfd.c b/gcc/testsuite/gcc.target/aarch64/sve/acle/asm/prfd.c index 869ef3d3e..b7a116cf0 100644 --- a/gcc/testsuite/gcc.target/aarch64/sve/acle/asm/prfd.c +++ b/gcc/testsuite/gcc.target/aarch64/sve/acle/asm/prfd.c @@ -218,8 +218,8 @@ TEST_PREFETCH (prfd_vnum_31, uint16_t, /* ** prfd_vnum_32: -** cntd (x[0-9]+) -** lsl (x[0-9]+), \1, #?8 +** cntb (x[0-9]+) +** lsl (x[0-9]+), \1, #?5 ** add (x[0-9]+), (\2, x0|x0, \2) ** prfd pldl1keep, p0, \[\3\] ** ret diff --git a/gcc/testsuite/gcc.target/aarch64/sve/acle/asm/prfh.c b/gcc/testsuite/gcc.target/aarch64/sve/acle/asm/prfh.c index 45a735eae..9d3df6bd3 100644 --- a/gcc/testsuite/gcc.target/aarch64/sve/acle/asm/prfh.c +++ b/gcc/testsuite/gcc.target/aarch64/sve/acle/asm/prfh.c @@ -218,8 +218,8 @@ TEST_PREFETCH (prfh_vnum_31, uint16_t, /* ** prfh_vnum_32: -** cntd (x[0-9]+) -** lsl (x[0-9]+), \1, #?8 +** cntb (x[0-9]+) +** lsl (x[0-9]+), \1, #?5 ** add (x[0-9]+), (\2, x0|x0, \2) ** prfh pldl1keep, p0, \[\3\] ** ret diff --git a/gcc/testsuite/gcc.target/aarch64/sve/acle/asm/prfw.c b/gcc/testsuite/gcc.target/aarch64/sve/acle/asm/prfw.c index 444187f45..6962abab6 100644 --- a/gcc/testsuite/gcc.target/aarch64/sve/acle/asm/prfw.c +++ b/gcc/testsuite/gcc.target/aarch64/sve/acle/asm/prfw.c @@ -218,8 +218,8 @@ TEST_PREFETCH (prfw_vnum_31, uint16_t, /* ** prfw_vnum_32: -** cntd (x[0-9]+) -** lsl (x[0-9]+), \1, #?8 +** cntb (x[0-9]+) +** lsl (x[0-9]+), \1, #?5 ** add (x[0-9]+), (\2, x0|x0, \2) ** prfw pldl1keep, p0, \[\3\] ** ret diff --git a/gcc/testsuite/gcc.target/aarch64/sve/loop_add_4.c b/gcc/testsuite/gcc.target/aarch64/sve/loop_add_4.c index 9ead9c21b..7f02497e8 100644 --- a/gcc/testsuite/gcc.target/aarch64/sve/loop_add_4.c +++ b/gcc/testsuite/gcc.target/aarch64/sve/loop_add_4.c @@ -68,8 +68,7 @@ TEST_ALL (LOOP) /* { dg-final { scan-assembler-times {\tindex\tz[0-9]+\.s, w[0-9]+, w[0-9]+\n} 3 } } */ /* { dg-final { scan-assembler-times {\tld1w\tz[0-9]+\.s, p[0-7]+/z, \[x[0-9]+, x[0-9]+, lsl 2\]} 8 } } */ /* { dg-final { scan-assembler-times {\tst1w\tz[0-9]+\.s, p[0-7]+, \[x[0-9]+, x[0-9]+, lsl 2\]} 8 } } */ -/* 2 for the calculations of -17 and 17. */ -/* { dg-final { scan-assembler-times {\tincw\tx[0-9]+\n} 10 } } */ +/* { dg-final { scan-assembler-times {\tincw\tx[0-9]+\n} 8 } } */ /* { dg-final { scan-assembler-times {\tdecw\tz[0-9]+\.s, all, mul #16\n} 1 } } */ /* { dg-final { scan-assembler-times {\tdecw\tz[0-9]+\.s, all, mul #15\n} 1 } } */ @@ -86,8 +85,7 @@ TEST_ALL (LOOP) /* { dg-final { scan-assembler-times {\tindex\tz[0-9]+\.d, x[0-9]+, x[0-9]+\n} 3 } } */ /* { dg-final { scan-assembler-times {\tld1d\tz[0-9]+\.d, p[0-7]+/z, \[x[0-9]+, x[0-9]+, lsl 3\]} 8 } } */ /* { dg-final { scan-assembler-times {\tst1d\tz[0-9]+\.d, p[0-7]+, \[x[0-9]+, x[0-9]+, lsl 3\]} 8 } } */ -/* 2 for the calculations of -17 and 17. */ -/* { dg-final { scan-assembler-times {\tincd\tx[0-9]+\n} 10 } } */ +/* { dg-final { scan-assembler-times {\tincd\tx[0-9]+\n} 8 } } */ /* { dg-final { scan-assembler-times {\tdecd\tz[0-9]+\.d, all, mul #16\n} 1 } } */ /* { dg-final { scan-assembler-times {\tdecd\tz[0-9]+\.d, all, mul #15\n} 1 } } */ diff --git a/gcc/testsuite/gcc.target/aarch64/sve/pcs/stack_clash_1.c b/gcc/testsuite/gcc.target/aarch64/sve/pcs/stack_clash_1.c index 110947a6c..5de34fc61 100644 --- a/gcc/testsuite/gcc.target/aarch64/sve/pcs/stack_clash_1.c +++ b/gcc/testsuite/gcc.target/aarch64/sve/pcs/stack_clash_1.c @@ -6,8 +6,7 @@ /* ** test_1: -** cntd x12, all, mul #9 -** lsl x12, x12, #?4 +** rdvl x12, #18 ** mov x11, sp ** ... ** sub sp, sp, x12 -- 2.33.0
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