0d883b412d
Two `#jni_call` sites with the same string-literal `(name, sig)` pair
now share a single `jclass` GlobalRef slot and a single `jmethodID`
slot, populated lazily on the first call to any matching site.
Non-literal sites keep the per-call `GetObjectClass` + `GetMethodID`
sequence from step 1.15.
Per-call-site lowering for literal sites:
%cached_mid = load ptr, @SX_JNI_MID_<key>
%is_cached = icmp ne ptr %cached_mid, null
br i1 %is_cached, cont, miss
miss:
%local_cls = GetObjectClass(env, target)
%global_cls = NewGlobalRef(env, local_cls) ; vtable slot 21
store ptr %global_cls, @SX_JNI_CLS_<key>
%fresh_mid = GetMethodID(env, global_cls, name, sig)
store ptr %fresh_mid, @SX_JNI_MID_<key>
br cont
cont:
%mid = phi ptr [%cached_mid, before], [%fresh_mid, miss]
call <Type>Method(env, target, %mid, args...)
Wiring:
- `JniMsgSend.cache_key: ?CacheKey` (new) carries `(name_str,
sig_str)` when both `name` and `sig` are string-literal AST nodes;
empty for non-literal call sites.
- `lower.zig` populates `cache_key` from the AST.
- `emit_llvm.zig` `getOrCreateJniSlots(name, sig)` returns the
`{cls_slot, mid_slot}` pair, creating and caching them on first
lookup. Key is `name\x00sig` so the separator can't collide with
any JNI identifier byte.
- `mangleJniKey` builds an LLVM-identifier suffix from the pair, used
in the `@SX_JNI_{CLS,MID}_<suffix>` global names.
IR snapshot at `tests/expected/ffi-jni-call-03-methodid-sharing.ir`
updated: two call sites against literal `("noop", "()V")` now share
`@SX_JNI_CLS_noop____V` and `@SX_JNI_MID_noop____V`. Pre-1.17 snapshot
had two independent `GetMethodID` calls; post-1.17 has one global
slot pair plus per-call lazy-init branches.
Note: an unrelated regression in `examples/ffi-objc-call-12-rect-u64-returns.sx`
exists in the working tree (parse error from an in-progress C-import
block) and is left untouched.
322 lines
12 KiB
Plaintext
322 lines
12 KiB
Plaintext
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@context = internal global { { ptr, ptr, ptr }, ptr } zeroinitializer
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@g_should_call = internal global i1 false
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@str = private unnamed_addr constant [5 x i8] c"noop\00", align 1
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@str.1 = private unnamed_addr constant [4 x i8] c"()V\00", align 1
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@SX_JNI_CLS_noop____V = internal global ptr null
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@SX_JNI_MID_noop____V = internal global ptr null
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@str.2 = private unnamed_addr constant [5 x i8] c"noop\00", align 1
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@str.3 = private unnamed_addr constant [4 x i8] c"()V\00", align 1
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@str.4 = private unnamed_addr constant [4 x i8] c"ok\0A\00", align 1
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@str.5 = private unnamed_addr constant [1 x i8] zeroinitializer, align 1
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; Function Attrs: nounwind
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declare void @out(ptr) #0
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declare ptr @malloc(i64)
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declare ptr @memcpy(ptr, ptr, i64)
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declare ptr @memset(ptr, i32, i64)
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declare void @free(ptr)
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; Function Attrs: nounwind
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declare void @GPA.create(ptr sret({ ptr, ptr, ptr }), ptr) #0
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; Function Attrs: nounwind
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define internal ptr @GPA.alloc(ptr %0, i64 %1) #0 {
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entry:
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%alloca = alloca ptr, align 8
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store ptr %0, ptr %alloca, align 8
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%allocaN = alloca i64, align 8
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store i64 %1, ptr %allocaN, align 8
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%load = load ptr, ptr %alloca, align 8
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%gep = getelementptr inbounds { i64 }, ptr %load, i32 0, i32 0
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%loadN = load i64, ptr %gep, align 8
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%add = add i64 %loadN, 1
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store i64 %add, ptr %gep, align 8
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%loadN = load i64, ptr %allocaN, align 8
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%malloc = call ptr @malloc(i64 %loadN)
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ret ptr %malloc
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}
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; Function Attrs: nounwind
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define internal void @GPA.dealloc(ptr %0, ptr %1) #0 {
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entry:
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%alloca = alloca ptr, align 8
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store ptr %0, ptr %alloca, align 8
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%allocaN = alloca ptr, align 8
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store ptr %1, ptr %allocaN, align 8
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%load = load ptr, ptr %alloca, align 8
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%gep = getelementptr inbounds { i64 }, ptr %load, i32 0, i32 0
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%loadN = load i64, ptr %gep, align 8
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%sub = sub i64 %loadN, 1
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store i64 %sub, ptr %gep, align 8
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%loadN = load ptr, ptr %allocaN, align 8
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call void @free(ptr %loadN)
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ret void
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}
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; Function Attrs: nounwind
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declare void @Arena.add_chunk(ptr, i64) #0
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; Function Attrs: nounwind
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declare void @Arena.create(ptr sret({ ptr, ptr, ptr }), ptr, ptr, i64) #0
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; Function Attrs: nounwind
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declare void @Arena.reset(ptr) #0
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; Function Attrs: nounwind
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declare void @Arena.deinit(ptr) #0
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; Function Attrs: nounwind
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declare ptr @Arena.alloc(ptr, i64) #0
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; Function Attrs: nounwind
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declare void @Arena.dealloc(ptr, ptr) #0
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; Function Attrs: nounwind
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declare void @BufAlloc.create(ptr sret({ ptr, ptr, ptr }), ptr, ptr, i64) #0
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; Function Attrs: nounwind
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declare void @BufAlloc.reset(ptr) #0
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; Function Attrs: nounwind
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declare ptr @BufAlloc.alloc(ptr, i64) #0
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; Function Attrs: nounwind
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declare void @BufAlloc.dealloc(ptr, ptr) #0
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; Function Attrs: nounwind
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define internal { ptr, i64 } @cstring(i64 %0) #0 {
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entry:
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%alloca = alloca i64, align 8
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store i64 %0, ptr %alloca, align 8
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%load = load i64, ptr %alloca, align 8
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%add = add i64 %load, 1
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%heap = call ptr @malloc(i64 %add)
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%allocaN = alloca ptr, align 8
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store ptr %heap, ptr %allocaN, align 8
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%loadN = load ptr, ptr %allocaN, align 8
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%loadN = load i64, ptr %alloca, align 8
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%addN = add i64 %loadN, 1
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%1 = call ptr @memset(ptr %loadN, i32 0, i64 %addN)
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%allocaN = alloca { ptr, i64 }, align 8
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store { ptr, i64 } undef, ptr %allocaN, align 8
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%loadN = load ptr, ptr %allocaN, align 8
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%gep = getelementptr inbounds { ptr, i64 }, ptr %allocaN, i32 0, i32 0
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%pti = ptrtoint ptr %loadN to i64
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store i64 %pti, ptr %gep, align 8
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%loadN = load i64, ptr %alloca, align 8
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%gepN = getelementptr inbounds { ptr, i64 }, ptr %allocaN, i32 0, i32 1
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store i64 %loadN, ptr %gepN, align 8
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%loadN = load { ptr, i64 }, ptr %allocaN, align 8
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ret { ptr, i64 } %loadN
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}
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; Function Attrs: nounwind
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declare ptr @int_to_string(i64) #0
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; Function Attrs: nounwind
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declare ptr @bool_to_string(i1) #0
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; Function Attrs: nounwind
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declare ptr @float_to_string(double) #0
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; Function Attrs: nounwind
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declare void @hex_group(ptr, i64, i64) #0
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; Function Attrs: nounwind
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declare ptr @int_to_hex_string(i64) #0
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; Function Attrs: nounwind
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define internal { ptr, i64 } @concat({ ptr, i64 } %0, { ptr, i64 } %1) #0 {
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entry:
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%alloca = alloca { ptr, i64 }, align 8
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store { ptr, i64 } %0, ptr %alloca, align 8
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%allocaN = alloca { ptr, i64 }, align 8
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store { ptr, i64 } %1, ptr %allocaN, align 8
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%load = load { ptr, i64 }, ptr %alloca, align 8
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%len = extractvalue { ptr, i64 } %load, 1
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%allocaN = alloca i64, align 8
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store i64 %len, ptr %allocaN, align 8
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%loadN = load { ptr, i64 }, ptr %allocaN, align 8
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%lenN = extractvalue { ptr, i64 } %loadN, 1
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%allocaN = alloca i64, align 8
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store i64 %lenN, ptr %allocaN, align 8
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%loadN = load i64, ptr %allocaN, align 8
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%loadN = load i64, ptr %allocaN, align 8
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%add = add i64 %loadN, %loadN
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%call = call { ptr, i64 } @cstring(i64 %add)
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%allocaN = alloca { ptr, i64 }, align 8
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store { ptr, i64 } %call, ptr %allocaN, align 8
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%loadN = load { ptr, i64 }, ptr %allocaN, align 8
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%dptr = extractvalue { ptr, i64 } %loadN, 0
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%loadN = load { ptr, i64 }, ptr %alloca, align 8
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%dptrN = extractvalue { ptr, i64 } %loadN, 0
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%loadN = load i64, ptr %allocaN, align 8
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%2 = call ptr @memcpy(ptr %dptr, ptr %dptrN, i64 %loadN)
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%loadN = load i64, ptr %allocaN, align 8
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%loadN = load { ptr, i64 }, ptr %allocaN, align 8
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%igp.data = extractvalue { ptr, i64 } %loadN, 0
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%igp.ptr = getelementptr i8, ptr %igp.data, i64 %loadN
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%loadN = load { ptr, i64 }, ptr %allocaN, align 8
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%dptrN = extractvalue { ptr, i64 } %loadN, 0
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%loadN = load i64, ptr %allocaN, align 8
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%3 = call ptr @memcpy(ptr %igp.ptr, ptr %dptrN, i64 %loadN)
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%loadN = load { ptr, i64 }, ptr %allocaN, align 8
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ret { ptr, i64 } %loadN
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}
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; Function Attrs: nounwind
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define internal { ptr, i64 } @substr({ ptr, i64 } %0, i64 %1, i64 %2) #0 {
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entry:
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%alloca = alloca { ptr, i64 }, align 8
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store { ptr, i64 } %0, ptr %alloca, align 8
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%allocaN = alloca i64, align 8
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store i64 %1, ptr %allocaN, align 8
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%allocaN = alloca i64, align 8
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store i64 %2, ptr %allocaN, align 8
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%load = load i64, ptr %allocaN, align 8
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%call = call { ptr, i64 } @cstring(i64 %load)
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%allocaN = alloca { ptr, i64 }, align 8
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store { ptr, i64 } %call, ptr %allocaN, align 8
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%loadN = load { ptr, i64 }, ptr %allocaN, align 8
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%dptr = extractvalue { ptr, i64 } %loadN, 0
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%loadN = load i64, ptr %allocaN, align 8
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%loadN = load { ptr, i64 }, ptr %alloca, align 8
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%igp.data = extractvalue { ptr, i64 } %loadN, 0
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%igp.ptr = getelementptr i8, ptr %igp.data, i64 %loadN
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%loadN = load i64, ptr %allocaN, align 8
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%3 = call ptr @memcpy(ptr %dptr, ptr %igp.ptr, i64 %loadN)
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%loadN = load { ptr, i64 }, ptr %allocaN, align 8
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ret { ptr, i64 } %loadN
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}
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; Function Attrs: nounwind
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declare ptr @any_to_string([2 x i64]) #0
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; Function Attrs: nounwind
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declare ptr @build_format(ptr) #0
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; Function Attrs: nounwind
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define internal void @unused_jni(ptr %0, ptr %1) #0 {
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entry:
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%alloca = alloca ptr, align 8
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store ptr %0, ptr %alloca, align 8
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%allocaN = alloca ptr, align 8
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store ptr %1, ptr %allocaN, align 8
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%load = load ptr, ptr %alloca, align 8
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%loadN = load ptr, ptr %allocaN, align 8
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%jni.ifs = load ptr, ptr %load, align 8
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%jni.cached.mid = load ptr, ptr @SX_JNI_MID_noop____V, align 8
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%jni.is.cached = icmp ne ptr %jni.cached.mid, null
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br i1 %jni.is.cached, label %jni.cont, label %jni.miss
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jni.miss: ; preds = %entry
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%2 = getelementptr inbounds ptr, ptr %jni.ifs, i32 31
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%jni.GetObjectClass = load ptr, ptr %2, align 8
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%jni.cls = call ptr %jni.GetObjectClass(ptr %load, ptr %loadN)
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%3 = getelementptr inbounds ptr, ptr %jni.ifs, i32 21
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%jni.NewGlobalRef = load ptr, ptr %3, align 8
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%jni.global.cls = call ptr %jni.NewGlobalRef(ptr %load, ptr %jni.cls)
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store ptr %jni.global.cls, ptr @SX_JNI_CLS_noop____V, align 8
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%4 = getelementptr inbounds ptr, ptr %jni.ifs, i32 33
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%jni.GetMethodID = load ptr, ptr %4, align 8
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%jni.fresh.mid = call ptr %jni.GetMethodID(ptr %load, ptr %jni.global.cls, ptr @str, ptr @str.1)
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store ptr %jni.fresh.mid, ptr @SX_JNI_MID_noop____V, align 8
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br label %jni.cont
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jni.cont: ; preds = %jni.miss, %entry
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%jni.mid = phi ptr [ %jni.cached.mid, %entry ], [ %jni.fresh.mid, %jni.miss ]
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%5 = getelementptr inbounds ptr, ptr %jni.ifs, i32 61
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%jni.callfn = load ptr, ptr %5, align 8
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call void %jni.callfn(ptr %load, ptr %loadN, ptr %jni.mid)
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%loadN = load ptr, ptr %alloca, align 8
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%loadN = load ptr, ptr %allocaN, align 8
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%jni.ifs5 = load ptr, ptr %loadN, align 8
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%jni.cached.mid6 = load ptr, ptr @SX_JNI_MID_noop____V, align 8
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%jni.is.cached7 = icmp ne ptr %jni.cached.mid6, null
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br i1 %jni.is.cached7, label %jni.cont9, label %jni.miss8
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jni.miss8: ; preds = %jni.cont
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%6 = getelementptr inbounds ptr, ptr %jni.ifs5, i32 31
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%jni.GetObjectClass10 = load ptr, ptr %6, align 8
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%jni.cls11 = call ptr %jni.GetObjectClass10(ptr %loadN, ptr %loadN)
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%7 = getelementptr inbounds ptr, ptr %jni.ifs5, i32 21
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%jni.NewGlobalRef12 = load ptr, ptr %7, align 8
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%jni.global.cls13 = call ptr %jni.NewGlobalRef12(ptr %loadN, ptr %jni.cls11)
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store ptr %jni.global.cls13, ptr @SX_JNI_CLS_noop____V, align 8
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%8 = getelementptr inbounds ptr, ptr %jni.ifs5, i32 33
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%jni.GetMethodID14 = load ptr, ptr %8, align 8
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%jni.fresh.mid15 = call ptr %jni.GetMethodID14(ptr %loadN, ptr %jni.global.cls13, ptr @str.2, ptr @str.3)
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store ptr %jni.fresh.mid15, ptr @SX_JNI_MID_noop____V, align 8
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br label %jni.cont9
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jni.cont9: ; preds = %jni.miss8, %jni.cont
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%jni.mid16 = phi ptr [ %jni.cached.mid6, %jni.cont ], [ %jni.fresh.mid15, %jni.miss8 ]
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%9 = getelementptr inbounds ptr, ptr %jni.ifs5, i32 61
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%jni.callfn17 = load ptr, ptr %9, align 8
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call void %jni.callfn17(ptr %loadN, ptr %loadN, ptr %jni.mid16)
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ret void
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}
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; Function Attrs: nounwind
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define i32 @main() #0 {
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entry:
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%alloca = alloca { i64 }, align 8
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store { i64 } zeroinitializer, ptr %alloca, align 8
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%si = insertvalue { ptr, ptr, ptr } undef, ptr %alloca, 0
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%siN = insertvalue { ptr, ptr, ptr } %si, ptr @__thunk_GPA_Allocator_alloc, 1
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%siN = insertvalue { ptr, ptr, ptr } %siN, ptr @__thunk_GPA_Allocator_dealloc, 2
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%siN = insertvalue { { ptr, ptr, ptr }, ptr } undef, { ptr, ptr, ptr } %siN, 0
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%siN = insertvalue { { ptr, ptr, ptr }, ptr } %siN, ptr null, 1
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store { { ptr, ptr, ptr }, ptr } %siN, ptr @context, align 8
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%gload = load i1, ptr @g_should_call, align 1
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br i1 %gload, label %if.then.0, label %if.merge.1
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if.then.0: ; preds = %entry
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call void @unused_jni(ptr null, ptr null)
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br label %if.merge.1
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if.merge.1: ; preds = %if.then.0, %entry
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%allocaN = alloca { ptr, i64 }, align 8
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%gep = getelementptr inbounds { ptr, i64 }, ptr %allocaN, i32 0, i32 0
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store ptr null, ptr %gep, align 8
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%gepN = getelementptr inbounds { ptr, i64 }, ptr %allocaN, i32 0, i32 1
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store i64 0, ptr %gepN, align 8
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%allocaN = alloca { ptr, i64 }, align 8
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store { ptr, i64 } { ptr @str.4, i64 3 }, ptr %allocaN, align 8
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%allocaN = alloca { ptr, i64 }, align 8
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store { ptr, i64 } { ptr @str.5, i64 0 }, ptr %allocaN, align 8
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%load = load { ptr, i64 }, ptr %allocaN, align 8
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%loadN = load { ptr, i64 }, ptr %allocaN, align 8
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%call = call { ptr, i64 } @substr({ ptr, i64 } %loadN, i64 0, i64 3)
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%callN = call { ptr, i64 } @concat({ ptr, i64 } %load, { ptr, i64 } %call)
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store { ptr, i64 } %callN, ptr %allocaN, align 8
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%loadN = load { ptr, i64 }, ptr %allocaN, align 8
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%str.ptr = extractvalue { ptr, i64 } %loadN, 0
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%str.len = extractvalue { ptr, i64 } %loadN, 1
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%0 = call i64 @write(i32 1, ptr %str.ptr, i64 %str.len)
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ret i32 0
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}
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; Function Attrs: nounwind
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define internal ptr @__thunk_GPA_Allocator_alloc(ptr %0, i64 %1) #0 {
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entry:
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%call = call ptr @GPA.alloc(ptr %0, i64 %1)
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ret ptr %call
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}
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; Function Attrs: nounwind
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define internal void @__thunk_GPA_Allocator_dealloc(ptr %0, ptr %1) #0 {
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entry:
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call void @GPA.dealloc(ptr %0, ptr %1)
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ret void
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}
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declare i64 @write(i32, ptr, i64)
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