ffi 1.21: lock in undef shape for #jni_call(bool)

Test-add for the jboolean return. JNI `jboolean` is a single byte (0
or 1); sx's `bool` lowers to LLVM `i1` with byte-coercion at the ABI
boundary. CallBooleanMethod is at vtable slot 37.

IR snapshot captures today's `ret i1 undef`. Next commit adds the
`.bool => Jni.CallBooleanMethod` arm.
This commit is contained in:
agra
2026-05-19 22:33:58 +03:00
parent ca4ba7589c
commit 1ee4017426
4 changed files with 292 additions and 0 deletions

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// Phase 1 step 1.21 (PLAN-FFI.md): `#jni_call(bool)` (jboolean
// return). JNI's `jboolean` is a single-byte unsigned integer (0 or
// 1) on every supported ABI; sx's `bool` lowers to LLVM `i1` but the
// arg/return coercion path widens it to the byte slot the JNI
// runtime expects. CallBooleanMethod lives at vtable slot 37.
#import "modules/std.sx";
g_should_call : bool = false;
read_bool :: (env: *void, target: *void) -> bool {
#jni_call(bool)(env, target, "isShown", "()Z");
}
main :: () -> s32 {
if g_should_call {
_ := read_bool(null, null);
}
print("ok\n");
0;
}

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0

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@context = internal global { { ptr, ptr, ptr }, ptr } zeroinitializer
@g_should_call = internal global i1 false
@str = private unnamed_addr constant [8 x i8] c"isShown\00", align 1
@str.1 = private unnamed_addr constant [4 x i8] c"()Z\00", align 1
@str.2 = private unnamed_addr constant [4 x i8] c"ok\0A\00", align 1
@str.3 = private unnamed_addr constant [1 x i8] zeroinitializer, align 1
; Function Attrs: nounwind
declare void @out(ptr) #0
declare ptr @malloc(i64)
declare ptr @memcpy(ptr, ptr, i64)
declare ptr @memset(ptr, i32, i64)
declare void @free(ptr)
; Function Attrs: nounwind
declare void @GPA.create(ptr sret({ ptr, ptr, ptr }), ptr) #0
; Function Attrs: nounwind
define internal ptr @GPA.alloc(ptr %0, i64 %1) #0 {
entry:
%alloca = alloca ptr, align 8
store ptr %0, ptr %alloca, align 8
%allocaN = alloca i64, align 8
store i64 %1, ptr %allocaN, align 8
%load = load ptr, ptr %alloca, align 8
%gep = getelementptr inbounds { i64 }, ptr %load, i32 0, i32 0
%loadN = load i64, ptr %gep, align 8
%add = add i64 %loadN, 1
store i64 %add, ptr %gep, align 8
%loadN = load i64, ptr %allocaN, align 8
%malloc = call ptr @malloc(i64 %loadN)
ret ptr %malloc
}
; Function Attrs: nounwind
define internal void @GPA.dealloc(ptr %0, ptr %1) #0 {
entry:
%alloca = alloca ptr, align 8
store ptr %0, ptr %alloca, align 8
%allocaN = alloca ptr, align 8
store ptr %1, ptr %allocaN, align 8
%load = load ptr, ptr %alloca, align 8
%gep = getelementptr inbounds { i64 }, ptr %load, i32 0, i32 0
%loadN = load i64, ptr %gep, align 8
%sub = sub i64 %loadN, 1
store i64 %sub, ptr %gep, align 8
%loadN = load ptr, ptr %allocaN, align 8
call void @free(ptr %loadN)
ret void
}
; Function Attrs: nounwind
declare void @Arena.add_chunk(ptr, i64) #0
; Function Attrs: nounwind
declare void @Arena.create(ptr sret({ ptr, ptr, ptr }), ptr, ptr, i64) #0
; Function Attrs: nounwind
declare void @Arena.reset(ptr) #0
; Function Attrs: nounwind
declare void @Arena.deinit(ptr) #0
; Function Attrs: nounwind
declare ptr @Arena.alloc(ptr, i64) #0
; Function Attrs: nounwind
declare void @Arena.dealloc(ptr, ptr) #0
; Function Attrs: nounwind
declare void @BufAlloc.create(ptr sret({ ptr, ptr, ptr }), ptr, ptr, i64) #0
; Function Attrs: nounwind
declare void @BufAlloc.reset(ptr) #0
; Function Attrs: nounwind
declare ptr @BufAlloc.alloc(ptr, i64) #0
; Function Attrs: nounwind
declare void @BufAlloc.dealloc(ptr, ptr) #0
; Function Attrs: nounwind
define internal { ptr, i64 } @cstring(i64 %0) #0 {
entry:
%alloca = alloca i64, align 8
store i64 %0, ptr %alloca, align 8
%load = load i64, ptr %alloca, align 8
%add = add i64 %load, 1
%heap = call ptr @malloc(i64 %add)
%allocaN = alloca ptr, align 8
store ptr %heap, ptr %allocaN, align 8
%loadN = load ptr, ptr %allocaN, align 8
%loadN = load i64, ptr %alloca, align 8
%addN = add i64 %loadN, 1
%1 = call ptr @memset(ptr %loadN, i32 0, i64 %addN)
%allocaN = alloca { ptr, i64 }, align 8
store { ptr, i64 } undef, ptr %allocaN, align 8
%loadN = load ptr, ptr %allocaN, align 8
%gep = getelementptr inbounds { ptr, i64 }, ptr %allocaN, i32 0, i32 0
%pti = ptrtoint ptr %loadN to i64
store i64 %pti, ptr %gep, align 8
%loadN = load i64, ptr %alloca, align 8
%gepN = getelementptr inbounds { ptr, i64 }, ptr %allocaN, i32 0, i32 1
store i64 %loadN, ptr %gepN, align 8
%loadN = load { ptr, i64 }, ptr %allocaN, align 8
ret { ptr, i64 } %loadN
}
; Function Attrs: nounwind
declare ptr @int_to_string(i64) #0
; Function Attrs: nounwind
declare ptr @bool_to_string(i1) #0
; Function Attrs: nounwind
declare ptr @float_to_string(double) #0
; Function Attrs: nounwind
declare void @hex_group(ptr, i64, i64) #0
; Function Attrs: nounwind
declare ptr @int_to_hex_string(i64) #0
; Function Attrs: nounwind
define internal { ptr, i64 } @concat({ ptr, i64 } %0, { ptr, i64 } %1) #0 {
entry:
%alloca = alloca { ptr, i64 }, align 8
store { ptr, i64 } %0, ptr %alloca, align 8
%allocaN = alloca { ptr, i64 }, align 8
store { ptr, i64 } %1, ptr %allocaN, align 8
%load = load { ptr, i64 }, ptr %alloca, align 8
%len = extractvalue { ptr, i64 } %load, 1
%allocaN = alloca i64, align 8
store i64 %len, ptr %allocaN, align 8
%loadN = load { ptr, i64 }, ptr %allocaN, align 8
%lenN = extractvalue { ptr, i64 } %loadN, 1
%allocaN = alloca i64, align 8
store i64 %lenN, ptr %allocaN, align 8
%loadN = load i64, ptr %allocaN, align 8
%loadN = load i64, ptr %allocaN, align 8
%add = add i64 %loadN, %loadN
%call = call { ptr, i64 } @cstring(i64 %add)
%allocaN = alloca { ptr, i64 }, align 8
store { ptr, i64 } %call, ptr %allocaN, align 8
%loadN = load { ptr, i64 }, ptr %allocaN, align 8
%dptr = extractvalue { ptr, i64 } %loadN, 0
%loadN = load { ptr, i64 }, ptr %alloca, align 8
%dptrN = extractvalue { ptr, i64 } %loadN, 0
%loadN = load i64, ptr %allocaN, align 8
%2 = call ptr @memcpy(ptr %dptr, ptr %dptrN, i64 %loadN)
%loadN = load i64, ptr %allocaN, align 8
%loadN = load { ptr, i64 }, ptr %allocaN, align 8
%igp.data = extractvalue { ptr, i64 } %loadN, 0
%igp.ptr = getelementptr i8, ptr %igp.data, i64 %loadN
%loadN = load { ptr, i64 }, ptr %allocaN, align 8
%dptrN = extractvalue { ptr, i64 } %loadN, 0
%loadN = load i64, ptr %allocaN, align 8
%3 = call ptr @memcpy(ptr %igp.ptr, ptr %dptrN, i64 %loadN)
%loadN = load { ptr, i64 }, ptr %allocaN, align 8
ret { ptr, i64 } %loadN
}
; Function Attrs: nounwind
define internal { ptr, i64 } @substr({ ptr, i64 } %0, i64 %1, i64 %2) #0 {
entry:
%alloca = alloca { ptr, i64 }, align 8
store { ptr, i64 } %0, ptr %alloca, align 8
%allocaN = alloca i64, align 8
store i64 %1, ptr %allocaN, align 8
%allocaN = alloca i64, align 8
store i64 %2, ptr %allocaN, align 8
%load = load i64, ptr %allocaN, align 8
%call = call { ptr, i64 } @cstring(i64 %load)
%allocaN = alloca { ptr, i64 }, align 8
store { ptr, i64 } %call, ptr %allocaN, align 8
%loadN = load { ptr, i64 }, ptr %allocaN, align 8
%dptr = extractvalue { ptr, i64 } %loadN, 0
%loadN = load i64, ptr %allocaN, align 8
%loadN = load { ptr, i64 }, ptr %alloca, align 8
%igp.data = extractvalue { ptr, i64 } %loadN, 0
%igp.ptr = getelementptr i8, ptr %igp.data, i64 %loadN
%loadN = load i64, ptr %allocaN, align 8
%3 = call ptr @memcpy(ptr %dptr, ptr %igp.ptr, i64 %loadN)
%loadN = load { ptr, i64 }, ptr %allocaN, align 8
ret { ptr, i64 } %loadN
}
; Function Attrs: nounwind
declare ptr @any_to_string([2 x i64]) #0
; Function Attrs: nounwind
declare ptr @build_format(ptr) #0
; Function Attrs: nounwind
define internal i1 @read_bool(ptr %0, ptr %1) #0 {
entry:
%alloca = alloca ptr, align 8
store ptr %0, ptr %alloca, align 8
%allocaN = alloca ptr, align 8
store ptr %1, ptr %allocaN, align 8
%load = load ptr, ptr %alloca, align 8
%loadN = load ptr, ptr %allocaN, align 8
ret i1 undef
}
; Function Attrs: nounwind
define i32 @main() #0 {
entry:
%alloca = alloca { i64 }, align 8
store { i64 } zeroinitializer, ptr %alloca, align 8
%si = insertvalue { ptr, ptr, ptr } undef, ptr %alloca, 0
%siN = insertvalue { ptr, ptr, ptr } %si, ptr @__thunk_GPA_Allocator_alloc, 1
%siN = insertvalue { ptr, ptr, ptr } %siN, ptr @__thunk_GPA_Allocator_dealloc, 2
%siN = insertvalue { { ptr, ptr, ptr }, ptr } undef, { ptr, ptr, ptr } %siN, 0
%siN = insertvalue { { ptr, ptr, ptr }, ptr } %siN, ptr null, 1
store { { ptr, ptr, ptr }, ptr } %siN, ptr @context, align 8
%gload = load i1, ptr @g_should_call, align 1
br i1 %gload, label %if.then.0, label %if.merge.1
if.then.0: ; preds = %entry
%call = call i1 @read_bool(ptr null, ptr null)
%allocaN = alloca i1, align 1
store i1 %call, ptr %allocaN, align 1
br label %if.merge.1
if.merge.1: ; preds = %if.then.0, %entry
%allocaN = alloca { ptr, i64 }, align 8
%gep = getelementptr inbounds { ptr, i64 }, ptr %allocaN, i32 0, i32 0
store ptr null, ptr %gep, align 8
%gepN = getelementptr inbounds { ptr, i64 }, ptr %allocaN, i32 0, i32 1
store i64 0, ptr %gepN, align 8
%allocaN = alloca { ptr, i64 }, align 8
store { ptr, i64 } { ptr @str.2, i64 3 }, ptr %allocaN, align 8
%allocaN = alloca { ptr, i64 }, align 8
store { ptr, i64 } { ptr @str.3, i64 0 }, ptr %allocaN, align 8
%load = load { ptr, i64 }, ptr %allocaN, align 8
%loadN = load { ptr, i64 }, ptr %allocaN, align 8
%callN = call { ptr, i64 } @substr({ ptr, i64 } %loadN, i64 0, i64 3)
%callN = call { ptr, i64 } @concat({ ptr, i64 } %load, { ptr, i64 } %callN)
store { ptr, i64 } %callN, ptr %allocaN, align 8
%loadN = load { ptr, i64 }, ptr %allocaN, align 8
%str.ptr = extractvalue { ptr, i64 } %loadN, 0
%str.len = extractvalue { ptr, i64 } %loadN, 1
%0 = call i64 @write(i32 1, ptr %str.ptr, i64 %str.len)
ret i32 0
}
; Function Attrs: nounwind
define internal ptr @__thunk_GPA_Allocator_alloc(ptr %0, i64 %1) #0 {
entry:
%call = call ptr @GPA.alloc(ptr %0, i64 %1)
ret ptr %call
}
; Function Attrs: nounwind
define internal void @__thunk_GPA_Allocator_dealloc(ptr %0, ptr %1) #0 {
entry:
call void @GPA.dealloc(ptr %0, ptr %1)
ret void
}
declare i64 @write(i32, ptr, i64)

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ok