mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-15 20:29:48 +00:00
5a70dd1d82
Similar to gep (r230786) and load (r230794) changes.
Similar migration script can be used to update test cases, which
successfully migrated all of LLVM and Polly, but about 4 test cases
needed manually changes in Clang.
(this script will read the contents of stdin and massage it into stdout
- wrap it in the 'apply.sh' script shown in previous commits + xargs to
apply it over a large set of test cases)
import fileinput
import sys
import re
rep = re.compile(r"(getelementptr(?:\s+inbounds)?\s*\()((<\d*\s+x\s+)?([^@]*?)(|\s*addrspace\(\d+\))\s*\*(?(3)>)\s*)(?=$|%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|zeroinitializer|<|\[\[[a-zA-Z]|\{\{)", re.MULTILINE | re.DOTALL)
def conv(match):
line = match.group(1)
line += match.group(4)
line += ", "
line += match.group(2)
return line
line = sys.stdin.read()
off = 0
for match in re.finditer(rep, line):
sys.stdout.write(line[off:match.start()])
sys.stdout.write(conv(match))
off = match.end()
sys.stdout.write(line[off:])
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@232184 91177308-0d34-0410-b5e6-96231b3b80d8
198 lines
5.8 KiB
LLVM
198 lines
5.8 KiB
LLVM
; RUN: llc -mtriple x86_64-pc-windows-msvc < %s | FileCheck %s
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; This test case is also intended to be run manually as a complete functional
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; test. It should link, print something, and exit zero rather than crashing.
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; It is the hypothetical lowering of a C source program that looks like:
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;
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; int safe_div(int *n, int *d) {
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; int r;
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; __try {
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; __try {
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; r = *n / *d;
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; } __except(GetExceptionCode() == EXCEPTION_ACCESS_VIOLATION) {
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; puts("EXCEPTION_ACCESS_VIOLATION");
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; r = -1;
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; }
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; } __except(GetExceptionCode() == EXCEPTION_INT_DIVIDE_BY_ZERO) {
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; puts("EXCEPTION_INT_DIVIDE_BY_ZERO");
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; r = -2;
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; }
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; return r;
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; }
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@str1 = internal constant [27 x i8] c"EXCEPTION_ACCESS_VIOLATION\00"
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@str2 = internal constant [29 x i8] c"EXCEPTION_INT_DIVIDE_BY_ZERO\00"
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define i32 @safe_div(i32* %n, i32* %d) {
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entry:
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%r = alloca i32, align 4
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invoke void @try_body(i32* %r, i32* %n, i32* %d)
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to label %__try.cont unwind label %lpad
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lpad:
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%vals = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__C_specific_handler to i8*)
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catch i8* bitcast (i32 (i8*, i8*)* @safe_div_filt0 to i8*)
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catch i8* bitcast (i32 (i8*, i8*)* @safe_div_filt1 to i8*)
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%ehptr = extractvalue { i8*, i32 } %vals, 0
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%sel = extractvalue { i8*, i32 } %vals, 1
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%filt0_val = call i32 @llvm.eh.typeid.for(i8* bitcast (i32 (i8*, i8*)* @safe_div_filt0 to i8*))
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%is_filt0 = icmp eq i32 %sel, %filt0_val
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br i1 %is_filt0, label %handler0, label %eh.dispatch1
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eh.dispatch1:
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%filt1_val = call i32 @llvm.eh.typeid.for(i8* bitcast (i32 (i8*, i8*)* @safe_div_filt1 to i8*))
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%is_filt1 = icmp eq i32 %sel, %filt1_val
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br i1 %is_filt1, label %handler1, label %eh.resume
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handler0:
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call void @puts(i8* getelementptr ([27 x i8], [27 x i8]* @str1, i32 0, i32 0))
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store i32 -1, i32* %r, align 4
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br label %__try.cont
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handler1:
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call void @puts(i8* getelementptr ([29 x i8], [29 x i8]* @str2, i32 0, i32 0))
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store i32 -2, i32* %r, align 4
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br label %__try.cont
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eh.resume:
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resume { i8*, i32 } %vals
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__try.cont:
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%safe_ret = load i32, i32* %r, align 4
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ret i32 %safe_ret
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}
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; Normal path code
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; CHECK: {{^}}safe_div:
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; CHECK: .seh_proc safe_div
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; CHECK: .seh_handler __C_specific_handler, @unwind, @except
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; CHECK: .Ltmp0:
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; CHECK: leaq [[rloc:.*\(%rsp\)]], %rcx
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; CHECK: callq try_body
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; CHECK-NEXT: .Ltmp1
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; CHECK: .LBB0_7:
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; CHECK: movl [[rloc]], %eax
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; CHECK: retq
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; Landing pad code
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; CHECK: .Ltmp3:
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; CHECK: movl $1, %[[sel:[a-z]+]]
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; CHECK: .Ltmp4
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; CHECK: movl $2, %[[sel]]
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; CHECK: .L{{.*}}:
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; CHECK: cmpl $1, %[[sel]]
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; CHECK: # %handler0
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; CHECK: callq puts
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; CHECK: movl $-1, [[rloc]]
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; CHECK: jmp .LBB0_7
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; CHECK: cmpl $2, %[[sel]]
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; CHECK: # %handler1
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; CHECK: callq puts
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; CHECK: movl $-2, [[rloc]]
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; CHECK: jmp .LBB0_7
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; FIXME: EH preparation should eliminate the 'resume' instr and we should not do
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; the previous 'cmp;jeq'.
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; CHECK-NOT: _Unwind_Resume
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; CHECK: ud2
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; CHECK: .seh_handlerdata
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; CHECK: .long 2
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; CHECK: .long .Ltmp0@IMGREL
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; CHECK: .long .Ltmp1@IMGREL+1
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; CHECK: .long safe_div_filt0@IMGREL
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; CHECK: .long .Ltmp3@IMGREL
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; CHECK: .long .Ltmp0@IMGREL
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; CHECK: .long .Ltmp1@IMGREL+1
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; CHECK: .long safe_div_filt1@IMGREL
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; CHECK: .long .Ltmp4@IMGREL
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; CHECK: .text
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; CHECK: .seh_endproc
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define void @try_body(i32* %r, i32* %n, i32* %d) {
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entry:
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%0 = load i32, i32* %n, align 4
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%1 = load i32, i32* %d, align 4
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%div = sdiv i32 %0, %1
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store i32 %div, i32* %r, align 4
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ret void
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}
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; The prototype of these filter functions is:
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; int filter(EXCEPTION_POINTERS *eh_ptrs, void *rbp);
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; The definition of EXCEPTION_POINTERS is:
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; typedef struct _EXCEPTION_POINTERS {
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; EXCEPTION_RECORD *ExceptionRecord;
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; CONTEXT *ContextRecord;
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; } EXCEPTION_POINTERS;
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; The definition of EXCEPTION_RECORD is:
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; typedef struct _EXCEPTION_RECORD {
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; DWORD ExceptionCode;
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; ...
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; } EXCEPTION_RECORD;
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; The exception code can be retreived with two loads, one for the record
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; pointer and one for the code. The values of local variables can be
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; accessed via rbp, but that would require additional not yet implemented LLVM
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; support.
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define i32 @safe_div_filt0(i8* %eh_ptrs, i8* %rbp) {
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%eh_ptrs_c = bitcast i8* %eh_ptrs to i32**
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%eh_rec = load i32*, i32** %eh_ptrs_c
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%eh_code = load i32, i32* %eh_rec
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; EXCEPTION_ACCESS_VIOLATION = 0xC0000005
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%cmp = icmp eq i32 %eh_code, 3221225477
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%filt.res = zext i1 %cmp to i32
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ret i32 %filt.res
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}
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define i32 @safe_div_filt1(i8* %eh_ptrs, i8* %rbp) {
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%eh_ptrs_c = bitcast i8* %eh_ptrs to i32**
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%eh_rec = load i32*, i32** %eh_ptrs_c
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%eh_code = load i32, i32* %eh_rec
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; EXCEPTION_INT_DIVIDE_BY_ZERO = 0xC0000094
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%cmp = icmp eq i32 %eh_code, 3221225620
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%filt.res = zext i1 %cmp to i32
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ret i32 %filt.res
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}
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@str_result = internal constant [21 x i8] c"safe_div result: %d\0A\00"
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define i32 @main() {
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%d.addr = alloca i32, align 4
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%n.addr = alloca i32, align 4
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store i32 10, i32* %n.addr, align 4
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store i32 2, i32* %d.addr, align 4
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%r1 = call i32 @safe_div(i32* %n.addr, i32* %d.addr)
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call void (i8*, ...)* @printf(i8* getelementptr ([21 x i8], [21 x i8]* @str_result, i32 0, i32 0), i32 %r1)
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store i32 10, i32* %n.addr, align 4
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store i32 0, i32* %d.addr, align 4
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%r2 = call i32 @safe_div(i32* %n.addr, i32* %d.addr)
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call void (i8*, ...)* @printf(i8* getelementptr ([21 x i8], [21 x i8]* @str_result, i32 0, i32 0), i32 %r2)
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%r3 = call i32 @safe_div(i32* %n.addr, i32* null)
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call void (i8*, ...)* @printf(i8* getelementptr ([21 x i8], [21 x i8]* @str_result, i32 0, i32 0), i32 %r3)
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ret i32 0
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}
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define void @_Unwind_Resume() {
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call void @abort()
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unreachable
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}
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declare i32 @__C_specific_handler(...)
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declare i32 @llvm.eh.typeid.for(i8*) readnone nounwind
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declare void @puts(i8*)
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declare void @printf(i8*, ...)
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declare void @abort()
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