#define NULL ((void *)0)
typedef unsigned long size_t; // Customize by platform.
typedef long intptr_t;
typedef unsigned long uintptr_t;
typedef long scalar_t__; // Either arithmetic or pointer type.
/* By default, we understand bool (as a convenience). */
typedef int bool;
#define false 0
#define true 1

/* Forward declarations */

/* Type definitions */

/* Variables and functions */
int /*<<< orphan*/ assert(int);
int /*<<< orphan*/ bar();
int main() {
  unsigned char foo[512];
  for (unsigned i = 0; i < sizeof foo; i++) {
    foo[i] = i & 0xFF;
  }
  bar();
  for (unsigned i = 0; i < sizeof foo; i++) {
    assert(foo[i] == (i & 0xFF));
  }
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x220,%rsp
movl   $0x0,-0x4(%rbp)
movl   $0x0,-0x214(%rbp)
mov    -0x214(%rbp),%eax
cmp    $0x200,%rax
jae    117c <main+0x5c>
mov    -0x214(%rbp),%eax
and    $0xff,%eax
mov    %al,%cl
mov    -0x214(%rbp),%eax
mov    %cl,-0x210(%rbp,%rax,1)
mov    -0x214(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x214(%rbp)
jmp    113c <main+0x1c>
mov    $0x0,%al
call   1030 <bar@plt>
movl   $0x0,-0x218(%rbp)
mov    -0x218(%rbp),%eax
cmp    $0x200,%rax
jae    11dc <main+0xbc>
mov    -0x218(%rbp),%eax
movzbl -0x210(%rbp,%rax,1),%eax
ff
mov    -0x218(%rbp),%ecx
and    $0xff,%ecx
cmp    %ecx,%eax
sete   %al
and    $0x1,%al
movzbl %al,%edi
call   1040 <assert@plt>
mov    -0x218(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x218(%rbp)
jmp    118d <main+0x6d>
xor    %eax,%eax
add    $0x220,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
sub    $0x200,%rsp
movaps 0xed0(%rip),%xmm8
movaps %xmm8,(%rsp)
movaps 0xed3(%rip),%xmm9
movaps %xmm9,0x10(%rsp)
movaps 0xed5(%rip),%xmm10
movaps %xmm10,0x20(%rsp)
movaps 0xed7(%rip),%xmm11
movaps %xmm11,0x30(%rsp)
movaps 0xed9(%rip),%xmm12
movaps %xmm12,0x40(%rsp)
movaps 0xedb(%rip),%xmm13
movaps %xmm13,0x50(%rsp)
movaps 0xedd(%rip),%xmm14
movaps %xmm14,0x60(%rsp)
movaps 0xedf(%rip),%xmm15
movaps %xmm15,0x70(%rsp)
movaps 0xee2(%rip),%xmm0
movaps %xmm0,0x80(%rsp)
movaps 0xee3(%rip),%xmm1
movaps %xmm1,0x90(%rsp)
movaps 0xee4(%rip),%xmm2
movaps %xmm2,0xa0(%rsp)
movaps 0xee5(%rip),%xmm3
movaps %xmm3,0xb0(%rsp)
movaps 0xee6(%rip),%xmm4
movaps %xmm4,0xc0(%rsp)
movaps 0xee7(%rip),%xmm5
movaps %xmm5,0xd0(%rsp)
movaps 0xee8(%rip),%xmm6
movaps %xmm6,0xe0(%rsp)
movaps 0xee9(%rip),%xmm7
movaps %xmm7,0xf0(%rsp)
movaps %xmm8,0x100(%rsp)
movaps %xmm9,0x110(%rsp)
movaps %xmm10,0x120(%rsp)
movaps %xmm11,0x130(%rsp)
movaps %xmm12,0x140(%rsp)
movaps %xmm13,0x150(%rsp)
movaps %xmm14,0x160(%rsp)
movaps %xmm15,0x170(%rsp)
movaps %xmm0,0x180(%rsp)
movaps %xmm1,0x190(%rsp)
movaps %xmm2,0x1a0(%rsp)
movaps %xmm3,0x1b0(%rsp)
movaps %xmm4,0x1c0(%rsp)
movaps %xmm5,0x1d0(%rsp)
movaps %xmm6,0x1e0(%rsp)
movaps %xmm7,0x1f0(%rsp)
xor    %ebx,%ebx
xor    %eax,%eax
call   1030 <bar@plt>
xor    %edi,%edi
cmp    (%rsp,%rbx,1),%bl
sete   %dil
call   1040 <assert@plt>
add    $0x1,%rbx
cmp    $0x200,%rbx
jne    12a0 <main+0x180>
xor    %eax,%eax
add    $0x200,%rsp
pop    %rbx
ret

LLVM IR (-O0):
define i32 @main() {
%1 = alloca i32
%2 = alloca [512 x i8]
%3 = alloca i32
%4 = alloca i32
store i32 0, i32* %1
store i32 0, i32* %3
br label %5
5: ; preds = %16, %0
%6 = load i32, i32* %3
%7 = zext i32 %6 to i64
%8 = icmp ult i64 %7, 512
br i1 %8, label %9, label %19
9: ; preds = %5
%10 = load i32, i32* %3
%11 = and i32 %10, 255
%12 = trunc i32 %11 to i8
%13 = load i32, i32* %3
%14 = zext i32 %13 to i64
%15 = getelementptr inbounds [512 x i8], [512 x i8]* %2, i64 0, i64 %14
store i8 %12, i8* %15
br label %16
16: ; preds = %9
%17 = load i32, i32* %3
%18 = add i32 %17, 1
store i32 %18, i32* %3
br label %5
19: ; preds = %5
%20 = call i32 (...) @bar()
store i32 0, i32* %4
br label %21
21: ; preds = %36, %19
%22 = load i32, i32* %4
%23 = zext i32 %22 to i64
%24 = icmp ult i64 %23, 512
br i1 %24, label %25, label %39
25: ; preds = %21
%26 = load i32, i32* %4
%27 = zext i32 %26 to i64
%28 = getelementptr inbounds [512 x i8], [512 x i8]* %2, i64 0, i64 %27
%29 = load i8, i8* %28
%30 = zext i8 %29 to i32
%31 = load i32, i32* %4
%32 = and i32 %31, 255
%33 = icmp eq i32 %30, %32
%34 = zext i1 %33 to i32
%35 = call i32 @assert(i32 %34)
br label %36
36: ; preds = %25
%37 = load i32, i32* %4
%38 = add i32 %37, 1
store i32 %38, i32* %4
br label %21
39: ; preds = %21
ret i32 0
}

LLVM IR (-O2):
define i32 @main() {
%1 = alloca [512 x i8]
%2 = getelementptr inbounds [512 x i8], [512 x i8]* %1, i64 0, i64 0
%3 = bitcast [512 x i8]* %1 to <16 x i8>*
store <16 x i8> <i8 0, i8 1, i8 2, i8 3, i8 4, i8 5, i8 6, i8 7, i8 8, i8 9, i8 10, i8 11, i8 12, i8 13, i8 14, i8 15>, <16 x i8>* %3
%4 = getelementptr inbounds [512 x i8], [512 x i8]* %1, i64 0, i64 16
%5 = bitcast i8* %4 to <16 x i8>*
store <16 x i8> <i8 16, i8 17, i8 18, i8 19, i8 20, i8 21, i8 22, i8 23, i8 24, i8 25, i8 26, i8 27, i8 28, i8 29, i8 30, i8 31>, <16 x i8>* %5
%6 = getelementptr inbounds [512 x i8], [512 x i8]* %1, i64 0, i64 32
%7 = bitcast i8* %6 to <16 x i8>*
store <16 x i8> <i8 32, i8 33, i8 34, i8 35, i8 36, i8 37, i8 38, i8 39, i8 40, i8 41, i8 42, i8 43, i8 44, i8 45, i8 46, i8 47>, <16 x i8>* %7
%8 = getelementptr inbounds [512 x i8], [512 x i8]* %1, i64 0, i64 48
%9 = bitcast i8* %8 to <16 x i8>*
store <16 x i8> <i8 48, i8 49, i8 50, i8 51, i8 52, i8 53, i8 54, i8 55, i8 56, i8 57, i8 58, i8 59, i8 60, i8 61, i8 62, i8 63>, <16 x i8>* %9
%10 = getelementptr inbounds [512 x i8], [512 x i8]* %1, i64 0, i64 64
%11 = bitcast i8* %10 to <16 x i8>*
store <16 x i8> <i8 64, i8 65, i8 66, i8 67, i8 68, i8 69, i8 70, i8 71, i8 72, i8 73, i8 74, i8 75, i8 76, i8 77, i8 78, i8 79>, <16 x i8>* %11
%12 = getelementptr inbounds [512 x i8], [512 x i8]* %1, i64 0, i64 80
%13 = bitcast i8* %12 to <16 x i8>*
store <16 x i8> <i8 80, i8 81, i8 82, i8 83, i8 84, i8 85, i8 86, i8 87, i8 88, i8 89, i8 90, i8 91, i8 92, i8 93, i8 94, i8 95>, <16 x i8>* %13
%14 = getelementptr inbounds [512 x i8], [512 x i8]* %1, i64 0, i64 96
%15 = bitcast i8* %14 to <16 x i8>*
store <16 x i8> <i8 96, i8 97, i8 98, i8 99, i8 100, i8 101, i8 102, i8 103, i8 104, i8 105, i8 106, i8 107, i8 108, i8 109, i8 110, i8 111>, <16 x i8>* %15
%16 = getelementptr inbounds [512 x i8], [512 x i8]* %1, i64 0, i64 112
%17 = bitcast i8* %16 to <16 x i8>*
store <16 x i8> <i8 112, i8 113, i8 114, i8 115, i8 116, i8 117, i8 118, i8 119, i8 120, i8 121, i8 122, i8 123, i8 124, i8 125, i8 126, i8 127>, <16 x i8>* %17
%18 = getelementptr inbounds [512 x i8], [512 x i8]* %1, i64 0, i64 128
%19 = bitcast i8* %18 to <16 x i8>*
store <16 x i8> <i8 -128, i8 -127, i8 -126, i8 -125, i8 -124, i8 -123, i8 -122, i8 -121, i8 -120, i8 -119, i8 -118, i8 -117, i8 -116, i8 -115, i8 -114, i8 -113>, <16 x i8>* %19
%20 = getelementptr inbounds [512 x i8], [512 x i8]* %1, i64 0, i64 144
%21 = bitcast i8* %20 to <16 x i8>*
store <16 x i8> <i8 -112, i8 -111, i8 -110, i8 -109, i8 -108, i8 -107, i8 -106, i8 -105, i8 -104, i8 -103, i8 -102, i8 -101, i8 -100, i8 -99, i8 -98, i8 -97>, <16 x i8>* %21
%22 = getelementptr inbounds [512 x i8], [512 x i8]* %1, i64 0, i64 160
%23 = bitcast i8* %22 to <16 x i8>*
store <16 x i8> <i8 -96, i8 -95, i8 -94, i8 -93, i8 -92, i8 -91, i8 -90, i8 -89, i8 -88, i8 -87, i8 -86, i8 -85, i8 -84, i8 -83, i8 -82, i8 -81>, <16 x i8>* %23
%24 = getelementptr inbounds [512 x i8], [512 x i8]* %1, i64 0, i64 176
%25 = bitcast i8* %24 to <16 x i8>*
store <16 x i8> <i8 -80, i8 -79, i8 -78, i8 -77, i8 -76, i8 -75, i8 -74, i8 -73, i8 -72, i8 -71, i8 -70, i8 -69, i8 -68, i8 -67, i8 -66, i8 -65>, <16 x i8>* %25
%26 = getelementptr inbounds [512 x i8], [512 x i8]* %1, i64 0, i64 192
%27 = bitcast i8* %26 to <16 x i8>*
store <16 x i8> <i8 -64, i8 -63, i8 -62, i8 -61, i8 -60, i8 -59, i8 -58, i8 -57, i8 -56, i8 -55, i8 -54, i8 -53, i8 -52, i8 -51, i8 -50, i8 -49>, <16 x i8>* %27
%28 = getelementptr inbounds [512 x i8], [512 x i8]* %1, i64 0, i64 208
%29 = bitcast i8* %28 to <16 x i8>*
store <16 x i8> <i8 -48, i8 -47, i8 -46, i8 -45, i8 -44, i8 -43, i8 -42, i8 -41, i8 -40, i8 -39, i8 -38, i8 -37, i8 -36, i8 -35, i8 -34, i8 -33>, <16 x i8>* %29
%30 = getelementptr inbounds [512 x i8], [512 x i8]* %1, i64 0, i64 224
%31 = bitcast i8* %30 to <16 x i8>*
store <16 x i8> <i8 -32, i8 -31, i8 -30, i8 -29, i8 -28, i8 -27, i8 -26, i8 -25, i8 -24, i8 -23, i8 -22, i8 -21, i8 -20, i8 -19, i8 -18, i8 -17>, <16 x i8>* %31
%32 = getelementptr inbounds [512 x i8], [512 x i8]* %1, i64 0, i64 240
%33 = bitcast i8* %32 to <16 x i8>*
store <16 x i8> <i8 -16, i8 -15, i8 -14, i8 -13, i8 -12, i8 -11, i8 -10, i8 -9, i8 -8, i8 -7, i8 -6, i8 -5, i8 -4, i8 -3, i8 -2, i8 -1>, <16 x i8>* %33
%34 = getelementptr inbounds [512 x i8], [512 x i8]* %1, i64 0, i64 256
%35 = bitcast i8* %34 to <16 x i8>*
store <16 x i8> <i8 0, i8 1, i8 2, i8 3, i8 4, i8 5, i8 6, i8 7, i8 8, i8 9, i8 10, i8 11, i8 12, i8 13, i8 14, i8 15>, <16 x i8>* %35
%36 = getelementptr inbounds [512 x i8], [512 x i8]* %1, i64 0, i64 272
%37 = bitcast i8* %36 to <16 x i8>*
store <16 x i8> <i8 16, i8 17, i8 18, i8 19, i8 20, i8 21, i8 22, i8 23, i8 24, i8 25, i8 26, i8 27, i8 28, i8 29, i8 30, i8 31>, <16 x i8>* %37
%38 = getelementptr inbounds [512 x i8], [512 x i8]* %1, i64 0, i64 288
%39 = bitcast i8* %38 to <16 x i8>*
store <16 x i8> <i8 32, i8 33, i8 34, i8 35, i8 36, i8 37, i8 38, i8 39, i8 40, i8 41, i8 42, i8 43, i8 44, i8 45, i8 46, i8 47>, <16 x i8>* %39
%40 = getelementptr inbounds [512 x i8], [512 x i8]* %1, i64 0, i64 304
%41 = bitcast i8* %40 to <16 x i8>*
store <16 x i8> <i8 48, i8 49, i8 50, i8 51, i8 52, i8 53, i8 54, i8 55, i8 56, i8 57, i8 58, i8 59, i8 60, i8 61, i8 62, i8 63>, <16 x i8>* %41
%42 = getelementptr inbounds [512 x i8], [512 x i8]* %1, i64 0, i64 320
%43 = bitcast i8* %42 to <16 x i8>*
store <16 x i8> <i8 64, i8 65, i8 66, i8 67, i8 68, i8 69, i8 70, i8 71, i8 72, i8 73, i8 74, i8 75, i8 76, i8 77, i8 78, i8 79>, <16 x i8>* %43
%44 = getelementptr inbounds [512 x i8], [512 x i8]* %1, i64 0, i64 336
%45 = bitcast i8* %44 to <16 x i8>*
store <16 x i8> <i8 80, i8 81, i8 82, i8 83, i8 84, i8 85, i8 86, i8 87, i8 88, i8 89, i8 90, i8 91, i8 92, i8 93, i8 94, i8 95>, <16 x i8>* %45
%46 = getelementptr inbounds [512 x i8], [512 x i8]* %1, i64 0, i64 352
%47 = bitcast i8* %46 to <16 x i8>*
store <16 x i8> <i8 96, i8 97, i8 98, i8 99, i8 100, i8 101, i8 102, i8 103, i8 104, i8 105, i8 106, i8 107, i8 108, i8 109, i8 110, i8 111>, <16 x i8>* %47
%48 = getelementptr inbounds [512 x i8], [512 x i8]* %1, i64 0, i64 368
%49 = bitcast i8* %48 to <16 x i8>*
store <16 x i8> <i8 112, i8 113, i8 114, i8 115, i8 116, i8 117, i8 118, i8 119, i8 120, i8 121, i8 122, i8 123, i8 124, i8 125, i8 126, i8 127>, <16 x i8>* %49
%50 = getelementptr inbounds [512 x i8], [512 x i8]* %1, i64 0, i64 384
%51 = bitcast i8* %50 to <16 x i8>*
store <16 x i8> <i8 -128, i8 -127, i8 -126, i8 -125, i8 -124, i8 -123, i8 -122, i8 -121, i8 -120, i8 -119, i8 -118, i8 -117, i8 -116, i8 -115, i8 -114, i8 -113>, <16 x i8>* %51
%52 = getelementptr inbounds [512 x i8], [512 x i8]* %1, i64 0, i64 400
%53 = bitcast i8* %52 to <16 x i8>*
store <16 x i8> <i8 -112, i8 -111, i8 -110, i8 -109, i8 -108, i8 -107, i8 -106, i8 -105, i8 -104, i8 -103, i8 -102, i8 -101, i8 -100, i8 -99, i8 -98, i8 -97>, <16 x i8>* %53
%54 = getelementptr inbounds [512 x i8], [512 x i8]* %1, i64 0, i64 416
%55 = bitcast i8* %54 to <16 x i8>*
store <16 x i8> <i8 -96, i8 -95, i8 -94, i8 -93, i8 -92, i8 -91, i8 -90, i8 -89, i8 -88, i8 -87, i8 -86, i8 -85, i8 -84, i8 -83, i8 -82, i8 -81>, <16 x i8>* %55
%56 = getelementptr inbounds [512 x i8], [512 x i8]* %1, i64 0, i64 432
%57 = bitcast i8* %56 to <16 x i8>*
store <16 x i8> <i8 -80, i8 -79, i8 -78, i8 -77, i8 -76, i8 -75, i8 -74, i8 -73, i8 -72, i8 -71, i8 -70, i8 -69, i8 -68, i8 -67, i8 -66, i8 -65>, <16 x i8>* %57
%58 = getelementptr inbounds [512 x i8], [512 x i8]* %1, i64 0, i64 448
%59 = bitcast i8* %58 to <16 x i8>*
store <16 x i8> <i8 -64, i8 -63, i8 -62, i8 -61, i8 -60, i8 -59, i8 -58, i8 -57, i8 -56, i8 -55, i8 -54, i8 -53, i8 -52, i8 -51, i8 -50, i8 -49>, <16 x i8>* %59
%60 = getelementptr inbounds [512 x i8], [512 x i8]* %1, i64 0, i64 464
%61 = bitcast i8* %60 to <16 x i8>*
store <16 x i8> <i8 -48, i8 -47, i8 -46, i8 -45, i8 -44, i8 -43, i8 -42, i8 -41, i8 -40, i8 -39, i8 -38, i8 -37, i8 -36, i8 -35, i8 -34, i8 -33>, <16 x i8>* %61
%62 = getelementptr inbounds [512 x i8], [512 x i8]* %1, i64 0, i64 480
%63 = bitcast i8* %62 to <16 x i8>*
store <16 x i8> <i8 -32, i8 -31, i8 -30, i8 -29, i8 -28, i8 -27, i8 -26, i8 -25, i8 -24, i8 -23, i8 -22, i8 -21, i8 -20, i8 -19, i8 -18, i8 -17>, <16 x i8>* %63
%64 = getelementptr inbounds [512 x i8], [512 x i8]* %1, i64 0, i64 496
%65 = bitcast i8* %64 to <16 x i8>*
store <16 x i8> <i8 -16, i8 -15, i8 -14, i8 -13, i8 -12, i8 -11, i8 -10, i8 -9, i8 -8, i8 -7, i8 -6, i8 -5, i8 -4, i8 -3, i8 -2, i8 -1>, <16 x i8>* %65
%66 = tail call i32 (...) @bar()
br label %68
67: ; preds = %68
ret i32 0
68: ; preds = %0, %68
%69 = phi i64 [ 0, %0 ], [ %76, %68 ]
%70 = getelementptr inbounds [512 x i8], [512 x i8]* %1, i64 0, i64 %69
%71 = load i8, i8* %70
%72 = trunc i64 %69 to i8
%73 = icmp eq i8 %71, %72
%74 = zext i1 %73 to i32
%75 = tail call i32 @assert(i32 %74)
%76 = add nuw nsw i64 %69, 1
%77 = icmp eq i64 %76, 512
br i1 %77, label %67, label %68
}