diff options
author | Tavian Barnes <tavianator@tavianator.com> | 2020-06-02 15:39:19 -0400 |
---|---|---|
committer | Tavian Barnes <tavianator@tavianator.com> | 2020-06-02 15:40:30 -0400 |
commit | a1c8bda52a9c07d32127762ee0c865660a0268ab (patch) | |
tree | c79a8a60573fa712c898ece6021929ab539e625e /opt.c | |
parent | c074645660f58faee1f653e4e8bd1ebf832c21f1 (diff) |
diag: Unify debug printing
Diffstat (limited to 'opt.c')
-rw-r--r-- | opt.c | 119 |
1 files changed, 51 insertions, 68 deletions
@@ -41,6 +41,7 @@ #include "cmdline.h" #include "color.h" +#include "diag.h" #include "eval.h" #include "expr.h" #include "pwcache.h" @@ -313,41 +314,17 @@ struct opt_state { }; /** Log an optimization. */ -static void debug_opt(const struct opt_state *state, const char *format, ...) { - if (!(state->cmdline->debug & DEBUG_OPT)) { - return; - } - - CFILE *cerr = state->cmdline->cerr; - - va_list args; - va_start(args, format); - - for (const char *i = format; *i != '\0'; ++i) { - if (*i == '%') { - switch (*++i) { - case 'd': - fprintf(cerr->file, "%d", va_arg(args, int)); - break; - - case 'e': - dump_expr(cerr, va_arg(args, const struct expr *), false); - break; - - case 'g': - cfprintf(cerr, "${ylw}%g${rs}", va_arg(args, double)); - break; - - default: - assert(false); - break; - } - } else { - fputc(*i, stderr); - } +BFS_FORMATTER(3, 4) +static bool debug_opt(const struct opt_state *state, int level, const char *format, ...) { + if (bfs_debug(state->cmdline, DEBUG_OPT, "${cyn}-O%d${rs}: ", level)) { + va_list args; + va_start(args, format); + cvfprintf(state->cmdline->cerr, format, args); + va_end(args); + return true; + } else { + return false; } - - va_end(args); } /** Extract a child expression, freeing the outer expression. */ @@ -384,7 +361,7 @@ static struct expr *optimize_or_expr(const struct opt_state *state, struct expr * Apply De Morgan's laws. */ static struct expr *de_morgan(const struct opt_state *state, struct expr *expr, char **argv) { - debug_opt(state, "-O1: De Morgan's laws: %e ", expr); + bool debug = debug_opt(state, 1, "De Morgan's laws: %pe ", expr); struct expr *parent = negate_expr(expr, argv); if (!parent) { @@ -413,7 +390,9 @@ static struct expr *de_morgan(const struct opt_state *state, struct expr *expr, return NULL; } - debug_opt(state, "<==> %e\n", parent); + if (debug) { + cfprintf(state->cmdline->cerr, "<==> %pe\n", parent); + } if (expr->lhs->eval == eval_not) { expr->lhs = optimize_not_expr(state, expr->lhs); @@ -461,18 +440,18 @@ static struct expr *optimize_not_expr(const struct opt_state *state, struct expr int optlevel = state->cmdline->optlevel; if (optlevel >= 1) { if (rhs == &expr_true) { - debug_opt(state, "-O1: constant propagation: %e <==> %e\n", expr, &expr_false); + debug_opt(state, 1, "constant propagation: %pe <==> %pe\n", expr, &expr_false); free_expr(expr); return &expr_false; } else if (rhs == &expr_false) { - debug_opt(state, "-O1: constant propagation: %e <==> %e\n", expr, &expr_true); + debug_opt(state, 1, "constant propagation: %pe <==> %pe\n", expr, &expr_true); free_expr(expr); return &expr_true; } else if (rhs->eval == eval_not) { - debug_opt(state, "-O1: double negation: %e <==> %e\n", expr, rhs->rhs); + debug_opt(state, 1, "double negation: %pe <==> %pe\n", expr, rhs->rhs); return extract_child_expr(expr, &rhs->rhs); } else if (expr_never_returns(rhs)) { - debug_opt(state, "-O1: reachability: %e <==> %e\n", expr, rhs); + debug_opt(state, 1, "reachability: %pe <==> %pe\n", expr, rhs); return extract_child_expr(expr, &expr->rhs); } else if ((rhs->eval == eval_and || rhs->eval == eval_or) && (rhs->lhs->eval == eval_not || rhs->rhs->eval == eval_not)) { @@ -514,27 +493,28 @@ static struct expr *optimize_and_expr(const struct opt_state *state, struct expr struct expr *lhs = expr->lhs; struct expr *rhs = expr->rhs; - int optlevel = state->cmdline->optlevel; + const struct cmdline *cmdline = state->cmdline; + int optlevel = cmdline->optlevel; if (optlevel >= 1) { if (lhs == &expr_true) { - debug_opt(state, "-O1: conjunction elimination: %e <==> %e\n", expr, rhs); + debug_opt(state, 1, "conjunction elimination: %pe <==> %pe\n", expr, rhs); return extract_child_expr(expr, &expr->rhs); } else if (rhs == &expr_true) { - debug_opt(state, "-O1: conjunction elimination: %e <==> %e\n", expr, lhs); + debug_opt(state, 1, "conjunction elimination: %pe <==> %pe\n", expr, lhs); return extract_child_expr(expr, &expr->lhs); } else if (lhs->always_false) { - debug_opt(state, "-O1: short-circuit: %e <==> %e\n", expr, lhs); + debug_opt(state, 1, "short-circuit: %pe <==> %pe\n", expr, lhs); return extract_child_expr(expr, &expr->lhs); } else if (lhs->always_true && rhs == &expr_false) { - debug_opt(state, "-O1: strength reduction: %e <==> ", expr); + bool debug = debug_opt(state, 1, "strength reduction: %pe <==> ", expr); struct expr *ret = extract_child_expr(expr, &expr->lhs); ret = negate_expr(ret, &fake_not_arg); - if (ret) { - debug_opt(state, "%e\n", ret); + if (debug && ret) { + cfprintf(cmdline->cerr, "%pe\n", ret); } return ret; } else if (optlevel >= 2 && lhs->pure && rhs == &expr_false) { - debug_opt(state, "-O2: purity: %e <==> %e\n", expr, rhs); + debug_opt(state, 2, "purity: %pe <==> %pe\n", expr, rhs); return extract_child_expr(expr, &expr->rhs); } else if (lhs->eval == eval_not && rhs->eval == eval_not) { return de_morgan(state, expr, expr->lhs->argv); @@ -582,27 +562,28 @@ static struct expr *optimize_or_expr(const struct opt_state *state, struct expr struct expr *lhs = expr->lhs; struct expr *rhs = expr->rhs; - int optlevel = state->cmdline->optlevel; + const struct cmdline *cmdline = state->cmdline; + int optlevel = cmdline->optlevel; if (optlevel >= 1) { if (lhs->always_true) { - debug_opt(state, "-O1: short-circuit: %e <==> %e\n", expr, lhs); + debug_opt(state, 1, "short-circuit: %pe <==> %pe\n", expr, lhs); return extract_child_expr(expr, &expr->lhs); } else if (lhs == &expr_false) { - debug_opt(state, "-O1: disjunctive syllogism: %e <==> %e\n", expr, rhs); + debug_opt(state, 1, "disjunctive syllogism: %pe <==> %pe\n", expr, rhs); return extract_child_expr(expr, &expr->rhs); } else if (rhs == &expr_false) { - debug_opt(state, "-O1: disjunctive syllogism: %e <==> %e\n", expr, lhs); + debug_opt(state, 1, "disjunctive syllogism: %pe <==> %pe\n", expr, lhs); return extract_child_expr(expr, &expr->lhs); } else if (lhs->always_false && rhs == &expr_true) { - debug_opt(state, "-O1: strength reduction: %e <==> ", expr); + bool debug = debug_opt(state, 1, "strength reduction: %pe <==> ", expr); struct expr *ret = extract_child_expr(expr, &expr->lhs); ret = negate_expr(ret, &fake_not_arg); - if (ret) { - debug_opt(state, "%e\n", ret); + if (debug && ret) { + cfprintf(cmdline->cerr, "%pe\n", ret); } return ret; } else if (optlevel >= 2 && lhs->pure && rhs == &expr_true) { - debug_opt(state, "-O2: purity: %e <==> %e\n", expr, rhs); + debug_opt(state, 2, "purity: %pe <==> %pe\n", expr, rhs); return extract_child_expr(expr, &expr->rhs); } else if (lhs->eval == eval_not && rhs->eval == eval_not) { return de_morgan(state, expr, expr->lhs->argv); @@ -650,12 +631,12 @@ static struct expr *ignore_result(const struct opt_state *state, struct expr *ex if (optlevel >= 1) { while (true) { if (expr->eval == eval_not) { - debug_opt(state, "-O1: ignored result: %e --> %e\n", expr, expr->rhs); + debug_opt(state, 1, "ignored result: %pe --> %pe\n", expr, expr->rhs); expr = extract_child_expr(expr, &expr->rhs); } else if (optlevel >= 2 && (expr->eval == eval_and || expr->eval == eval_or || expr->eval == eval_comma) && expr->rhs->pure) { - debug_opt(state, "-O2: ignored result: %e --> %e\n", expr, expr->lhs); + debug_opt(state, 2, "ignored result: %pe --> %pe\n", expr, expr->lhs); expr = extract_child_expr(expr, &expr->lhs); } else { break; @@ -663,7 +644,7 @@ static struct expr *ignore_result(const struct opt_state *state, struct expr *ex } if (optlevel >= 2 && expr->pure && expr != &expr_false) { - debug_opt(state, "-O2: ignored result: %e --> %e\n", expr, &expr_false); + debug_opt(state, 2, "ignored result: %pe --> %pe\n", expr, &expr_false); free_expr(expr); expr = &expr_false; } @@ -684,14 +665,14 @@ static struct expr *optimize_comma_expr(const struct opt_state *state, struct ex lhs = expr->lhs = ignore_result(state, lhs); if (expr_never_returns(lhs)) { - debug_opt(state, "-O1: reachability: %e <==> %e\n", expr, lhs); + debug_opt(state, 1, "reachability: %pe <==> %pe\n", expr, lhs); return extract_child_expr(expr, &expr->lhs); } else if ((lhs->always_true && rhs == &expr_true) || (lhs->always_false && rhs == &expr_false)) { - debug_opt(state, "-O1: redundancy elimination: %e <==> %e\n", expr, lhs); + debug_opt(state, 1, "redundancy elimination: %pe <==> %pe\n", expr, lhs); return extract_child_expr(expr, &expr->lhs); } else if (optlevel >= 2 && lhs->pure) { - debug_opt(state, "-O2: purity: %e <==> %e\n", expr, rhs); + debug_opt(state, 2, "purity: %pe <==> %pe\n", expr, rhs); return extract_child_expr(expr, &expr->rhs); } } @@ -900,7 +881,7 @@ static struct expr *optimize_expr_recursive(struct opt_state *state, struct expr if (facts_are_impossible(&state->facts_when_true)) { if (expr->pure) { - debug_opt(state, "-O2: data flow: %e --> %e\n", expr, &expr_false); + debug_opt(state, 2, "data flow: %pe --> %pe\n", expr, &expr_false); free_expr(expr); expr = &expr_false; } else { @@ -909,7 +890,7 @@ static struct expr *optimize_expr_recursive(struct opt_state *state, struct expr } } else if (facts_are_impossible(&state->facts_when_false)) { if (expr->pure) { - debug_opt(state, "-O2: data flow: %e --> %e\n", expr, &expr_true); + debug_opt(state, 2, "data flow: %pe --> %pe\n", expr, &expr_true); free_expr(expr); expr = &expr_true; } else { @@ -925,11 +906,13 @@ done: /** Swap the children of a binary expression if it would reduce the cost. */ static bool reorder_expr(const struct opt_state *state, struct expr *expr, double swapped_cost) { if (swapped_cost < expr->cost) { - debug_opt(state, "-O3: cost: %e", expr); + bool debug = debug_opt(state, 3, "cost: %pe <==> ", expr); struct expr *lhs = expr->lhs; expr->lhs = expr->rhs; expr->rhs = lhs; - debug_opt(state, " <==> %e (~%g --> ~%g)\n", expr, expr->cost, swapped_cost); + if (debug) { + cfprintf(state->cmdline->cerr, "%pe (~${ylw}%g${rs} --> ~${ylw}%g${rs})\n", expr, expr->cost, swapped_cost); + } expr->cost = swapped_cost; return true; } else { @@ -1009,7 +992,7 @@ int optimize_cmdline(struct cmdline *cmdline) { mindepth = INT_MAX; } cmdline->mindepth = mindepth; - debug_opt(&state, "-O2: data flow: mindepth --> %d\n", cmdline->mindepth); + debug_opt(&state, 2, "data flow: mindepth --> %d\n", cmdline->mindepth); } if (optlevel >= 4 && maxdepth < cmdline->maxdepth) { @@ -1017,7 +1000,7 @@ int optimize_cmdline(struct cmdline *cmdline) { maxdepth = INT_MIN; } cmdline->maxdepth = maxdepth; - debug_opt(&state, "-O4: data flow: maxdepth --> %d\n", cmdline->maxdepth); + debug_opt(&state, 4, "data flow: maxdepth --> %d\n", cmdline->maxdepth); } return 0; |