From 7b84fd04bda9aab5735cdf359c2c8e39f0a31713 Mon Sep 17 00:00:00 2001 From: Taylor Simpson Date: Mon, 6 Mar 2023 18:58:27 -0800 Subject: [PATCH] Hexagon (target/hexagon) Reduce manipulation of slot_cancelled We only need to track slot for predicated stores and predicated HVX instructions. Add arguments to the probe helper functions to indicate if the slot is predicated. Here is a simple example of the differences in the TCG code generated: IN: 0x00400094: 0xf900c102 { if (P0) R2 = and(R0,R1) } BEFORE ---- 00400094 mov_i32 slot_cancelled,$0x0 mov_i32 new_r2,r2 and_i32 tmp0,p0,$0x1 brcond_i32 tmp0,$0x0,eq,$L1 and_i32 tmp0,r0,r1 mov_i32 new_r2,tmp0 br $L2 set_label $L1 or_i32 slot_cancelled,slot_cancelled,$0x8 set_label $L2 mov_i32 r2,new_r2 AFTER ---- 00400094 mov_i32 new_r2,r2 and_i32 tmp0,p0,$0x1 brcond_i32 tmp0,$0x0,eq,$L1 and_i32 tmp0,r0,r1 mov_i32 new_r2,tmp0 br $L2 set_label $L1 set_label $L2 mov_i32 r2,new_r2 Signed-off-by: Taylor Simpson Reviewed-by: Anton Johansson Message-Id: <20230307025828.1612809-14-tsimpson@quicinc.com> --- target/hexagon/idef-parser/idef-parser.lex | 4 +-- target/hexagon/idef-parser/idef-parser.y | 7 ++--- target/hexagon/idef-parser/parser-helpers.c | 1 - target/hexagon/macros.h | 2 +- target/hexagon/op_helper.c | 32 +++++++++++----------- target/hexagon/op_helper.h | 3 +-- target/hexagon/translate.c | 42 ++++++++++++++++++++++++----- target/hexagon/translate.h | 10 +++++++ 8 files changed, 71 insertions(+), 30 deletions(-) diff --git a/target/hexagon/idef-parser/idef-parser.lex b/target/hexagon/idef-parser/idef-parser.lex index 2658d9fb2e..5eb8ac5a80 100644 --- a/target/hexagon/idef-parser/idef-parser.lex +++ b/target/hexagon/idef-parser/idef-parser.lex @@ -5,7 +5,7 @@ %{ /* - * Copyright(c) 2019-2022 rev.ng Labs Srl. All Rights Reserved. + * Copyright(c) 2019-2023 rev.ng Labs Srl. All Rights Reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -312,7 +312,7 @@ STRING_LIT \"(\\.|[^"\\])*\" "fREAD_PC()" { return PC; } "USR.LPCFG" { return LPCFG; } "LOAD_CANCEL(EA)" { return LOAD_CANCEL; } -"STORE_CANCEL(EA)" | +"STORE_CANCEL(EA)" { return STORE_CANCEL; } "CANCEL" { return CANCEL; } "N"{LOWER_ID}"N" { yylval->rvalue.type = REGISTER_ARG; yylval->rvalue.reg.type = DOTNEW; diff --git a/target/hexagon/idef-parser/idef-parser.y b/target/hexagon/idef-parser/idef-parser.y index d7b2199b74..7d05773b67 100644 --- a/target/hexagon/idef-parser/idef-parser.y +++ b/target/hexagon/idef-parser/idef-parser.y @@ -1,6 +1,6 @@ %{ /* - * Copyright(c) 2019-2022 rev.ng Labs Srl. All Rights Reserved. + * Copyright(c) 2019-2023 rev.ng Labs Srl. All Rights Reserved. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of @@ -53,7 +53,7 @@ %token ABS CROUND ROUND CIRCADD COUNTONES INC DEC ANDA ORA XORA PLUSPLUS ASL %token ASR LSR EQ NEQ LTE GTE MIN MAX ANDL FOR ICIRC IF MUN FSCR FCHK SXT %token ZXT CONSTEXT LOCNT BREV SIGN LOAD STORE PC LPCFG -%token LOAD_CANCEL CANCEL IDENTITY ROTL INSBITS SETBITS EXTRANGE +%token LOAD_CANCEL STORE_CANCEL CANCEL IDENTITY ROTL INSBITS SETBITS EXTRANGE %token CAST4_8U FAIL CARRY_FROM_ADD ADDSAT64 LSBNEW %token TYPE_SIZE_T TYPE_INT TYPE_SIGNED TYPE_UNSIGNED TYPE_LONG @@ -412,10 +412,11 @@ cancel_statement : LOAD_CANCEL { gen_load_cancel(c, &@1); } - | CANCEL + | STORE_CANCEL { gen_cancel(c, &@1); } + | CANCEL ; if_statement : if_stmt diff --git a/target/hexagon/idef-parser/parser-helpers.c b/target/hexagon/idef-parser/parser-helpers.c index 9720ef4ad1..18cde6a1be 100644 --- a/target/hexagon/idef-parser/parser-helpers.c +++ b/target/hexagon/idef-parser/parser-helpers.c @@ -1727,7 +1727,6 @@ void gen_cancel(Context *c, YYLTYPE *locp) void gen_load_cancel(Context *c, YYLTYPE *locp) { - gen_cancel(c, locp); OUT(c, locp, "if (insn->slot == 0 && pkt->pkt_has_store_s1) {\n"); OUT(c, locp, "ctx->s1_store_processed = false;\n"); OUT(c, locp, "process_store(ctx, 1);\n"); diff --git a/target/hexagon/macros.h b/target/hexagon/macros.h index 1fa6057d27..482a9c787f 100644 --- a/target/hexagon/macros.h +++ b/target/hexagon/macros.h @@ -205,7 +205,7 @@ static inline void gen_cancel(uint32_t slot) #define CANCEL gen_cancel(slot); #else -#define CANCEL cancel_slot(env, slot) +#define CANCEL do { } while (0) #endif #define LOAD_CANCEL(EA) do { CANCEL; } while (0) diff --git a/target/hexagon/op_helper.c b/target/hexagon/op_helper.c index 9425941c69..c9a156030e 100644 --- a/target/hexagon/op_helper.c +++ b/target/hexagon/op_helper.c @@ -30,6 +30,7 @@ #include "mmvec/mmvec.h" #include "mmvec/macros.h" #include "op_helper.h" +#include "translate.h" #define SF_BIAS 127 #define SF_MANTBITS 23 @@ -415,9 +416,10 @@ int32_t HELPER(vacsh_pred)(CPUHexagonState *env, return PeV; } -static void probe_store(CPUHexagonState *env, int slot, int mmu_idx) +static void probe_store(CPUHexagonState *env, int slot, int mmu_idx, + bool is_predicated) { - if (!(env->slot_cancelled & (1 << slot))) { + if (!is_predicated || !(env->slot_cancelled & (1 << slot))) { size1u_t width = env->mem_log_stores[slot].width; target_ulong va = env->mem_log_stores[slot].va; uintptr_t ra = GETPC(); @@ -437,9 +439,12 @@ void HELPER(probe_noshuf_load)(CPUHexagonState *env, target_ulong va, } /* Called during packet commit when there are two scalar stores */ -void HELPER(probe_pkt_scalar_store_s0)(CPUHexagonState *env, int mmu_idx) +void HELPER(probe_pkt_scalar_store_s0)(CPUHexagonState *env, int args) { - probe_store(env, 0, mmu_idx); + int mmu_idx = FIELD_EX32(args, PROBE_PKT_SCALAR_STORE_S0, MMU_IDX); + bool is_predicated = + FIELD_EX32(args, PROBE_PKT_SCALAR_STORE_S0, IS_PREDICATED); + probe_store(env, 0, mmu_idx, is_predicated); } void HELPER(probe_hvx_stores)(CPUHexagonState *env, int mmu_idx) @@ -486,15 +491,18 @@ void HELPER(probe_hvx_stores)(CPUHexagonState *env, int mmu_idx) void HELPER(probe_pkt_scalar_hvx_stores)(CPUHexagonState *env, int mask, int mmu_idx) { - bool has_st0 = (mask >> 0) & 1; - bool has_st1 = (mask >> 1) & 1; - bool has_hvx_stores = (mask >> 2) & 1; + bool has_st0 = FIELD_EX32(mask, PROBE_PKT_SCALAR_HVX_STORES, HAS_ST0); + bool has_st1 = FIELD_EX32(mask, PROBE_PKT_SCALAR_HVX_STORES, HAS_ST1); + bool has_hvx_stores = + FIELD_EX32(mask, PROBE_PKT_SCALAR_HVX_STORES, HAS_HVX_STORES); + bool s0_is_pred = FIELD_EX32(mask, PROBE_PKT_SCALAR_HVX_STORES, S0_IS_PRED); + bool s1_is_pred = FIELD_EX32(mask, PROBE_PKT_SCALAR_HVX_STORES, S1_IS_PRED); if (has_st0) { - probe_store(env, 0, mmu_idx); + probe_store(env, 0, mmu_idx, s0_is_pred); } if (has_st1) { - probe_store(env, 1, mmu_idx); + probe_store(env, 1, mmu_idx, s1_is_pred); } if (has_hvx_stores) { HELPER(probe_hvx_stores)(env, mmu_idx); @@ -1444,12 +1452,6 @@ void HELPER(vwhist128qm)(CPUHexagonState *env, int32_t uiV) } } -void cancel_slot(CPUHexagonState *env, uint32_t slot) -{ - HEX_DEBUG_LOG("Slot %d cancelled\n", slot); - env->slot_cancelled |= (1 << slot); -} - /* These macros can be referenced in the generated helper functions */ #define warn(...) /* Nothing */ #define fatal(...) g_assert_not_reached(); diff --git a/target/hexagon/op_helper.h b/target/hexagon/op_helper.h index 02347edee8..34b3a53975 100644 --- a/target/hexagon/op_helper.h +++ b/target/hexagon/op_helper.h @@ -1,5 +1,5 @@ /* - * Copyright(c) 2019-2021 Qualcomm Innovation Center, Inc. All Rights Reserved. + * Copyright(c) 2019-2023 Qualcomm Innovation Center, Inc. All Rights Reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -19,7 +19,6 @@ #define HEXAGON_OP_HELPER_H /* Misc functions */ -void cancel_slot(CPUHexagonState *env, uint32_t slot); void write_new_pc(CPUHexagonState *env, bool pkt_has_multi_cof, target_ulong addr); uint8_t mem_load1(CPUHexagonState *env, uint32_t slot, target_ulong vaddr); diff --git a/target/hexagon/translate.c b/target/hexagon/translate.c index 493bc75d27..1e3a76aece 100644 --- a/target/hexagon/translate.c +++ b/target/hexagon/translate.c @@ -248,7 +248,16 @@ static bool check_for_attrib(Packet *pkt, int attrib) static bool need_slot_cancelled(Packet *pkt) { - return check_for_attrib(pkt, A_CONDEXEC); + /* We only need slot_cancelled for conditional store and HVX instructions */ + for (int i = 0; i < pkt->num_insns; i++) { + uint16_t opcode = pkt->insn[i].opcode; + if (GET_ATTRIB(opcode, A_CONDEXEC) && + (GET_ATTRIB(opcode, A_STORE) || + GET_ATTRIB(opcode, A_CVI))) { + return true; + } + } + return false; } static bool need_pred_written(Packet *pkt) @@ -845,13 +854,27 @@ static void gen_commit_packet(DisasContext *ctx) TCGv mask_tcgv; if (has_store_s0) { - mask |= (1 << 0); + mask = + FIELD_DP32(mask, PROBE_PKT_SCALAR_HVX_STORES, HAS_ST0, 1); } if (has_store_s1) { - mask |= (1 << 1); + mask = + FIELD_DP32(mask, PROBE_PKT_SCALAR_HVX_STORES, HAS_ST1, 1); } if (has_hvx_store) { - mask |= (1 << 2); + mask = + FIELD_DP32(mask, PROBE_PKT_SCALAR_HVX_STORES, + HAS_HVX_STORES, 1); + } + if (has_store_s0 && slot_is_predicated(pkt, 0)) { + mask = + FIELD_DP32(mask, PROBE_PKT_SCALAR_HVX_STORES, + S0_IS_PRED, 1); + } + if (has_store_s1 && slot_is_predicated(pkt, 1)) { + mask = + FIELD_DP32(mask, PROBE_PKT_SCALAR_HVX_STORES, + S1_IS_PRED, 1); } mask_tcgv = tcg_constant_tl(mask); gen_helper_probe_pkt_scalar_hvx_stores(cpu_env, mask_tcgv, mem_idx); @@ -861,8 +884,15 @@ static void gen_commit_packet(DisasContext *ctx) * process_store_log will execute the slot 1 store first, * so we only have to probe the store in slot 0 */ - TCGv mem_idx = tcg_constant_tl(ctx->mem_idx); - gen_helper_probe_pkt_scalar_store_s0(cpu_env, mem_idx); + int args = 0; + args = + FIELD_DP32(args, PROBE_PKT_SCALAR_STORE_S0, MMU_IDX, ctx->mem_idx); + if (slot_is_predicated(pkt, 0)) { + args = + FIELD_DP32(args, PROBE_PKT_SCALAR_STORE_S0, IS_PREDICATED, 1); + } + TCGv args_tcgv = tcg_constant_tl(args); + gen_helper_probe_pkt_scalar_store_s0(cpu_env, args_tcgv); } process_store_log(ctx); diff --git a/target/hexagon/translate.h b/target/hexagon/translate.h index 765f2c6a22..6e59a90c41 100644 --- a/target/hexagon/translate.h +++ b/target/hexagon/translate.h @@ -172,4 +172,14 @@ extern TCGv hex_vstore_pending[VSTORES_MAX]; bool is_gather_store_insn(DisasContext *ctx); void process_store(DisasContext *ctx, int slot_num); + +FIELD(PROBE_PKT_SCALAR_STORE_S0, MMU_IDX, 0, 2) +FIELD(PROBE_PKT_SCALAR_STORE_S0, IS_PREDICATED, 2, 1) + +FIELD(PROBE_PKT_SCALAR_HVX_STORES, HAS_ST0, 0, 1) +FIELD(PROBE_PKT_SCALAR_HVX_STORES, HAS_ST1, 1, 1) +FIELD(PROBE_PKT_SCALAR_HVX_STORES, HAS_HVX_STORES, 2, 1) +FIELD(PROBE_PKT_SCALAR_HVX_STORES, S0_IS_PRED, 3, 1) +FIELD(PROBE_PKT_SCALAR_HVX_STORES, S1_IS_PRED, 4, 1) + #endif -- 2.11.0