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Phase 7-Step7: Replace g_tls_sll_enable with TINY_FRONT_TLS_SLL_ENABLED macro

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**Goal**: Enable dead code elimination for TLS SLL checks in PGO mode

**Changes**:
1. core/box/tiny_front_config_box.h:
   - Add TINY_FRONT_TLS_SLL_ENABLED macro (PGO: 1, Normal: tiny_tls_sll_enabled())
   - Add tiny_tls_sll_enabled() wrapper function (static inline)

2. core/tiny_alloc_fast.inc.h (5 hot path locations):
   - Line 220: tiny_heap_v2_refill_mag() - early return check
   - Line 388: SLIM mode - SLL freelist check
   - Line 459: tiny_alloc_fast_pop() - Layer 1 SLL check
   - Line 774: Main alloc path - cached sll_enabled check (most critical!)
   - Line 815: Generic front - SLL toggle respect

3. core/hakmem_tiny_refill.inc.h (2 locations):
   - Line 186: bulk_mag_refill_fc() - refill from SLL
   - Line 213: bulk_mag_to_sll_if_room() - push to SLL

**Performance**: 79.9M ops/s (maintained, +0.1M vs Step 6)
- Normal mode: Same performance (runtime checks preserved)
- PGO mode: Dead code elimination ready (if (!1) → removed by compiler)

**Expected PGO benefit**:
- Eliminate 7 TLS SLL checks across hot paths
- Reduce instruction count in main alloc loop
- Better branch prediction (no runtime checks)

**Design**: Config Box as single entry point
- All TLS SLL checks now use TINY_FRONT_TLS_SLL_ENABLED
- Consistent pattern with FASTCACHE/SFC/HEAP_V2 macros
- Include order independent (wrapper in config box header)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
This commit is contained in:
Moe Charm (CI)
2025-11-29 17:35:51 +09:00
parent ae00221a0a
commit 69e6df4cbc
3 changed files with 22 additions and 12 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
core/box/tiny_front_config_box.h
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@ -52,6 +52,7 @@
#define TINY_FRONT_HEAP_V2_ENABLED 0 // Disabled (use Unified Cache)
#define TINY_FRONT_SFC_ENABLED 1 // Enabled (SFC cascade)
#define TINY_FRONT_FASTCACHE_ENABLED 0 // Disabled (use Unified Cache)
#define TINY_FRONT_TLS_SLL_ENABLED 1 // Enabled (TLS SLL freelist)
#define TINY_FRONT_UNIFIED_GATE_ENABLED 1 // Enabled (Front Gate Unification)
#define TINY_FRONT_METRICS_ENABLED 0 // Disabled (no runtime overhead)
#define TINY_FRONT_DIAG_ENABLED 0 // Disabled (no diagnostics)
@ -94,12 +95,18 @@ static inline int sfc_cascade_enabled(void) {
return g_sfc_enabled;
}
static inline int tiny_tls_sll_enabled(void) {
extern int g_tls_sll_enable;
return g_tls_sll_enable;
}
// Config macros (runtime function calls)
// These expand to actual function calls in normal mode
#define TINY_FRONT_ULTRA_SLIM_ENABLED ultra_slim_mode_enabled()
#define TINY_FRONT_HEAP_V2_ENABLED tiny_heap_v2_enabled()
#define TINY_FRONT_SFC_ENABLED sfc_cascade_enabled()
#define TINY_FRONT_FASTCACHE_ENABLED tiny_fastcache_enabled()
#define TINY_FRONT_TLS_SLL_ENABLED tiny_tls_sll_enabled()
#define TINY_FRONT_UNIFIED_GATE_ENABLED front_gate_unified_enabled()
#define TINY_FRONT_METRICS_ENABLED tiny_metrics_enabled()
#define TINY_FRONT_DIAG_ENABLED tiny_diag_enabled()