/
boehmgc.ll
89 lines (66 loc) · 2.26 KB
/
boehmgc.ll
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; LLVM 4.0.0.1 @64bit
; created by tattn
; my_malloc
define internal i8* @my_malloc(i64 %size) {
%ret = call noalias i8* @GC_malloc(i64 %size)
ret i8* %ret
}
; finalizer
@finalizer.str.freed = private unnamed_addr constant [10 x i8] c"freed %d\0A\00"
@finalizer.count = internal global i32 0, align 4
define internal void @finalizer(i8*, i8*) {
%count = load i32, i32* @finalizer.count, align 4
%count2 = add nsw i32 %count, 1
store i32 %count2, i32* @finalizer.count, align 4
call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([10 x i8], [10 x i8]* @finalizer.str.freed, i32 0, i32 0), i32 %count)
ret void
}
; main
@main.str.format = private constant [5 x i8] c"%ld\0A\00"
define i32 @main() {
call void @GC_init()
%i8_int64 = call i8* @my_malloc(i64 8)
%int64 = bitcast i8* %i8_int64 to i64*
store i64 1234567890, i64* %int64
%int64v = load i64, i64* %int64
call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @main.str.format, i32 0, i32 0), i64 %int64v)
%i = alloca i32, align 4
%p = alloca i8*, align 8
store i32 0, i32* %i, align 4
br label %for_start
for_start:
%iv = load i32, i32* %i, align 4
%for_cond = icmp slt i32 %iv, 100
br i1 %for_cond, label %for_body, label %for_end
for_body:
%pv = call i8* @my_malloc(i64 128)
store i8* %pv, i8** %p, align 8
call void @GC_register_finalizer(i8* %pv, void (i8*, i8*)* @finalizer, i8* null, void (i8*, i8*)** null, i8** null)
br label %for_next
for_next:
%iv2 = load i32, i32* %i, align 4
%iv3 = add nsw i32 %iv2, 1
store i32 %iv3, i32* %i, align 4
br label %for_start
for_end:
call void @GC_gcollect()
ret i32 0
}
; decrlaration
declare i32 @printf(i8*, ...)
@GC_gc_no = external global i64, align 8
declare void @GC_init()
declare noalias i8* @GC_malloc(i64)
declare i32 @GC_calloc(...)
declare i8* @GC_realloc(i8*, i64)
declare void @GC_free(i8*)
declare void @GC_gcollect()
declare void @GC_register_finalizer(i8*, void (i8*, i8*)*, i8*, void (i8*, i8*)**, i8**)
declare void @GC_set_max_heap_size(i64)
declare i64 @GC_size(i8*)
declare i8* @GC_base(i8*)
declare noalias i8* @GC_malloc_uncollectable(i64)
declare i64 @GC_get_heap_size()
declare i64 @GC_get_free_bytes()
declare i64 @GC_get_bytes_since_gc()
declare i64 @GC_get_total_bytes()