unsigned char ieee_p_1242562249_sub_4501204497521157593_1035706684(
    char *t1, char *t2, char *t3, char *t4, char *t5) {
  char t7[40];
  unsigned char t0;
  char *t8;
  unsigned char t9;
  char *t10;
  char *t11;
  unsigned char t12;
  char *t13;
  char *t14;
  unsigned int t15;
  char *t16;
  unsigned int t17;
  unsigned char t18;
  unsigned int t19;
  char *t20;
  char *t21;
LAB0:
  t8 = (t7 + 4U);
  t9 = (t2 != 0);
  if (t9 == 1)
    goto LAB3;
LAB2:
  t10 = (t7 + 12U);
  *((char **)t10) = t3;
  t11 = (t7 + 20U);
  t12 = (t4 != 0);
  if (t12 == 1)
    goto LAB5;
LAB4:
  t13 = (t7 + 28U);
  *((char **)t13) = t5;
  t14 = (t3 + 12U);
  t15 = *((unsigned int *)t14);
  t15 = (t15 * 1U);
  t16 = (t5 + 12U);
  t17 = *((unsigned int *)t16);
  t17 = (t17 * 1U);
  t18 = 1;
  if (t15 == t17)
    goto LAB6;
LAB7:
  t18 = 0;
LAB8:
  t0 = t18;
LAB1:
  return t0;
LAB3:
  *((char **)t8) = t2;
  goto LAB2;
LAB5:
  *((char **)t11) = t4;
  goto LAB4;
LAB6:
  t19 = 0;
LAB9:
  if (t19 < t15)
    goto LAB10;
  else
    goto LAB8;
LAB10:
  t20 = (t2 + t19);
  t21 = (t4 + t19);
  if (*((unsigned char *)t20) != *((unsigned char *)t21))
    goto LAB7;
LAB11:
  t19 = (t19 + 1);
  goto LAB9;
LAB12:;
}


x86 assembly (clang, -O0):
<ieee_p_1242562249_sub_4501204497521157593_1035706684>:
push   %rbp
mov    %rsp,%rbp
sub    $0x50,%rsp
mov    %rdi,-0x10(%rbp)
mov    %rsi,-0x18(%rbp)
mov    %rdx,-0x20(%rbp)
mov    %rcx,-0x28(%rbp)
mov    %r8,-0x30(%rbp)
lea    -0x60(%rbp),%rax
add    $0x4,%rax
mov    %rax,-0x70(%rbp)
cmpq   $0x0,-0x18(%rbp)
setne  %al
and    $0x1,%al
movzbl %al,%eax
mov    %al,-0x71(%rbp)
movzbl -0x71(%rbp),%eax
cmp    $0x1,%eax
jne    114a <ieee_p_1242562249_sub_4501204497521157593_1035706684+0x4a>
jmp    1257 <ieee_p_1242562249_sub_4501204497521157593_1035706684+0x157>
jmp    114f <ieee_p_1242562249_sub_4501204497521157593_1035706684+0x4f>
lea    -0x60(%rbp),%rax
add    $0xc,%rax
mov    %rax,-0x80(%rbp)
mov    -0x20(%rbp),%rcx
mov    -0x80(%rbp),%rax
mov    %rcx,(%rax)
lea    -0x60(%rbp),%rax
add    $0x14,%rax
mov    %rax,-0x88(%rbp)
cmpq   $0x0,-0x28(%rbp)
setne  %al
and    $0x1,%al
movzbl %al,%eax
mov    %al,-0x89(%rbp)
movzbl -0x89(%rbp),%eax
cmp    $0x1,%eax
jne    119d <ieee_p_1242562249_sub_4501204497521157593_1035706684+0x9d>
jmp    1267 <ieee_p_1242562249_sub_4501204497521157593_1035706684+0x167>
jmp    11a2 <ieee_p_1242562249_sub_4501204497521157593_1035706684+0xa2>
lea    -0x60(%rbp),%rax
add    $0x1c,%rax
mov    %rax,-0x98(%rbp)
mov    -0x30(%rbp),%rcx
mov    -0x98(%rbp),%rax
mov    %rcx,(%rax)
mov    -0x20(%rbp),%rax
add    $0xc,%rax
mov    %rax,-0xa0(%rbp)
mov    -0xa0(%rbp),%rax
mov    (%rax),%eax
mov    %eax,-0xa4(%rbp)
mov    -0xa4(%rbp),%eax
shl    $0x0,%eax
mov    %eax,-0xa4(%rbp)
mov    -0x30(%rbp),%rax
add    $0xc,%rax
mov    %rax,-0xb0(%rbp)
mov    -0xb0(%rbp),%rax
mov    (%rax),%eax
mov    %eax,-0xb4(%rbp)
mov    -0xb4(%rbp),%eax
shl    $0x0,%eax
mov    %eax,-0xb4(%rbp)
movb   $0x1,-0xb5(%rbp)
mov    -0xa4(%rbp),%eax
cmp    -0xb4(%rbp),%eax
jne    1237 <ieee_p_1242562249_sub_4501204497521157593_1035706684+0x137>
jmp    127a <ieee_p_1242562249_sub_4501204497521157593_1035706684+0x17a>
jmp    123c <ieee_p_1242562249_sub_4501204497521157593_1035706684+0x13c>
movb   $0x0,-0xb5(%rbp)
mov    -0xb5(%rbp),%al
mov    %al,-0x61(%rbp)
mov    -0x61(%rbp),%al
mov    %al,-0x1(%rbp)
jmp    1302 <ieee_p_1242562249_sub_4501204497521157593_1035706684+0x202>
mov    -0x18(%rbp),%rcx
mov    -0x70(%rbp),%rax
mov    %rcx,(%rax)
jmp    114f <ieee_p_1242562249_sub_4501204497521157593_1035706684+0x4f>
mov    -0x28(%rbp),%rcx
mov    -0x88(%rbp),%rax
mov    %rcx,(%rax)
jmp    11a2 <ieee_p_1242562249_sub_4501204497521157593_1035706684+0xa2>
movl   $0x0,-0xbc(%rbp)
mov    -0xbc(%rbp),%eax
cmp    -0xa4(%rbp),%eax
jae    129b <ieee_p_1242562249_sub_4501204497521157593_1035706684+0x19b>
jmp    12a0 <ieee_p_1242562249_sub_4501204497521157593_1035706684+0x1a0>
jmp    1243 <ieee_p_1242562249_sub_4501204497521157593_1035706684+0x143>
mov    -0x18(%rbp),%rax
mov    -0xbc(%rbp),%ecx
add    %rcx,%rax
mov    %rax,-0xc8(%rbp)
mov    -0x28(%rbp),%rax
mov    -0xbc(%rbp),%ecx
add    %rcx,%rax
mov    %rax,-0xd0(%rbp)
mov    -0xc8(%rbp),%rax
movzbl (%rax),%eax
mov    -0xd0(%rbp),%rcx
movzbl (%rcx),%ecx
cmp    %ecx,%eax
je     12e9 <ieee_p_1242562249_sub_4501204497521157593_1035706684+0x1e9>
jmp    123c <ieee_p_1242562249_sub_4501204497521157593_1035706684+0x13c>
jmp    12ee <ieee_p_1242562249_sub_4501204497521157593_1035706684+0x1ee>
mov    -0xbc(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0xbc(%rbp)
jmp    1284 <ieee_p_1242562249_sub_4501204497521157593_1035706684+0x184>
movzbl -0x1(%rbp),%eax
add    $0x50,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<ieee_p_1242562249_sub_4501204497521157593_1035706684>:
mov    0xc(%rdx),%r9d
cmp    0xc(%r8),%r9d
jne    1133 <ieee_p_1242562249_sub_4501204497521157593_1035706684+0x33>
mov    $0x1,%al
test   %r9,%r9
je     1132 <ieee_p_1242562249_sub_4501204497521157593_1035706684+0x32>
xor    %edi,%edi
cs nopw 0x0(%rax,%rax,1)
nopl   (%rax)
movzbl (%rsi,%rdi,1),%edx
cmp    (%rcx,%rdi,1),%dl
jne    1133 <ieee_p_1242562249_sub_4501204497521157593_1035706684+0x33>
add    $0x1,%rdi
cmp    %rdi,%r9
jne    1120 <ieee_p_1242562249_sub_4501204497521157593_1035706684+0x20>
ret
xor    %eax,%eax
ret

LLVM IR (-O0):
define zeroext i8 @ieee_p_1242562249_sub_4501204497521157593_1035706684(i8* %0, i8* %1, i8* %2, i8* %3, i8* %4) {
%6 = alloca i8
%7 = alloca i8*
%8 = alloca i8*
%9 = alloca i8*
%10 = alloca i8*
%11 = alloca i8*
%12 = alloca [40 x i8]
%13 = alloca i8
%14 = alloca i8*
%15 = alloca i8
%16 = alloca i8*
%17 = alloca i8*
%18 = alloca i8
%19 = alloca i8*
%20 = alloca i8*
%21 = alloca i32
%22 = alloca i8*
%23 = alloca i32
%24 = alloca i8
%25 = alloca i32
%26 = alloca i8*
%27 = alloca i8*
store i8* %0, i8** %7
store i8* %1, i8** %8
store i8* %2, i8** %9
store i8* %3, i8** %10
store i8* %4, i8** %11
br label %28
28: ; preds = %5
%29 = getelementptr inbounds [40 x i8], [40 x i8]* %12, i64 0, i64 0
%30 = getelementptr inbounds i8, i8* %29, i64 4
store i8* %30, i8** %14
%31 = load i8*, i8** %8
%32 = icmp ne i8* %31, null
%33 = zext i1 %32 to i32
%34 = trunc i32 %33 to i8
store i8 %34, i8* %15
%35 = load i8, i8* %15
%36 = zext i8 %35 to i32
%37 = icmp eq i32 %36, 1
br i1 %37, label %38, label %39
38: ; preds = %28
br label %87
39: ; preds = %28
br label %40
40: ; preds = %87, %39
%41 = getelementptr inbounds [40 x i8], [40 x i8]* %12, i64 0, i64 0
%42 = getelementptr inbounds i8, i8* %41, i64 12
store i8* %42, i8** %16
%43 = load i8*, i8** %9
%44 = load i8*, i8** %16
%45 = bitcast i8* %44 to i8**
store i8* %43, i8** %45
%46 = getelementptr inbounds [40 x i8], [40 x i8]* %12, i64 0, i64 0
%47 = getelementptr inbounds i8, i8* %46, i64 20
store i8* %47, i8** %17
%48 = load i8*, i8** %10
%49 = icmp ne i8* %48, null
%50 = zext i1 %49 to i32
%51 = trunc i32 %50 to i8
store i8 %51, i8* %18
%52 = load i8, i8* %18
%53 = zext i8 %52 to i32
%54 = icmp eq i32 %53, 1
br i1 %54, label %55, label %56
55: ; preds = %40
br label %91
56: ; preds = %40
br label %57
57: ; preds = %91, %56
%58 = getelementptr inbounds [40 x i8], [40 x i8]* %12, i64 0, i64 0
%59 = getelementptr inbounds i8, i8* %58, i64 28
store i8* %59, i8** %19
%60 = load i8*, i8** %11
%61 = load i8*, i8** %19
%62 = bitcast i8* %61 to i8**
store i8* %60, i8** %62
%63 = load i8*, i8** %9
%64 = getelementptr inbounds i8, i8* %63, i64 12
store i8* %64, i8** %20
%65 = load i8*, i8** %20
%66 = bitcast i8* %65 to i32*
%67 = load i32, i32* %66
store i32 %67, i32* %21
%68 = load i32, i32* %21
%69 = mul i32 %68, 1
store i32 %69, i32* %21
%70 = load i8*, i8** %11
%71 = getelementptr inbounds i8, i8* %70, i64 12
store i8* %71, i8** %22
%72 = load i8*, i8** %22
%73 = bitcast i8* %72 to i32*
%74 = load i32, i32* %73
store i32 %74, i32* %23
%75 = load i32, i32* %23
%76 = mul i32 %75, 1
store i32 %76, i32* %23
store i8 1, i8* %24
%77 = load i32, i32* %21
%78 = load i32, i32* %23
%79 = icmp eq i32 %77, %78
br i1 %79, label %80, label %81
80: ; preds = %57
br label %95
81: ; preds = %57
br label %82
82: ; preds = %118, %81
store i8 0, i8* %24
br label %83
83: ; preds = %101, %82
%84 = load i8, i8* %24
store i8 %84, i8* %13
br label %85
85: ; preds = %83
%86 = load i8, i8* %13
store i8 %86, i8* %6
br label %124
87: ; preds = %38
%88 = load i8*, i8** %8
%89 = load i8*, i8** %14
%90 = bitcast i8* %89 to i8**
store i8* %88, i8** %90
br label %40
91: ; preds = %55
%92 = load i8*, i8** %10
%93 = load i8*, i8** %17
%94 = bitcast i8* %93 to i8**
store i8* %92, i8** %94
br label %57
95: ; preds = %80
store i32 0, i32* %25
br label %96
96: ; preds = %120, %95
%97 = load i32, i32* %25
%98 = load i32, i32* %21
%99 = icmp ult i32 %97, %98
br i1 %99, label %100, label %101
100: ; preds = %96
br label %102
101: ; preds = %96
br label %83
102: ; preds = %100
%103 = load i8*, i8** %8
%104 = load i32, i32* %25
%105 = zext i32 %104 to i64
%106 = getelementptr inbounds i8, i8* %103, i64 %105
store i8* %106, i8** %26
%107 = load i8*, i8** %10
%108 = load i32, i32* %25
%109 = zext i32 %108 to i64
%110 = getelementptr inbounds i8, i8* %107, i64 %109
store i8* %110, i8** %27
%111 = load i8*, i8** %26
%112 = load i8, i8* %111
%113 = zext i8 %112 to i32
%114 = load i8*, i8** %27
%115 = load i8, i8* %114
%116 = zext i8 %115 to i32
%117 = icmp ne i32 %113, %116
br i1 %117, label %118, label %119
118: ; preds = %102
br label %82
119: ; preds = %102
br label %120
120: ; preds = %119
%121 = load i32, i32* %25
%122 = add i32 %121, 1
store i32 %122, i32* %25
br label %96
123: ; No predecessors!
br label %124
124: ; preds = %123, %85
%125 = load i8, i8* %6
ret i8 %125
}

LLVM IR (-O2):
define zeroext i8 @ieee_p_1242562249_sub_4501204497521157593_1035706684(i8* nocapture readnone %0, i8* nocapture %1, i8* nocapture %2, i8* nocapture %3, i8* nocapture %4) {
%6 = getelementptr inbounds i8, i8* %2, i64 12
%7 = bitcast i8* %6 to i32*
%8 = load i32, i32* %7
%9 = getelementptr inbounds i8, i8* %4, i64 12
%10 = bitcast i8* %9 to i32*
%11 = load i32, i32* %10
%12 = icmp eq i32 %8, %11
br i1 %12, label %13, label %17
13: ; preds = %5
%14 = icmp eq i32 %8, 0
br i1 %14, label %17, label %15
15: ; preds = %13
%16 = zext i32 %8 to i64
br label %21
17: ; preds = %19, %21, %13, %5
%18 = phi i8 [ 0, %5 ], [ 1, %13 ], [ 1, %19 ], [ 0, %21 ]
ret i8 %18
19: ; preds = %21
%20 = icmp eq i64 %28, %16
br i1 %20, label %17, label %21
21: ; preds = %15, %19
%22 = phi i64 [ 0, %15 ], [ %28, %19 ]
%23 = getelementptr inbounds i8, i8* %1, i64 %22
%24 = getelementptr inbounds i8, i8* %3, i64 %22
%25 = load i8, i8* %23
%26 = load i8, i8* %24
%27 = icmp eq i8 %25, %26
%28 = add nuw nsw i64 %22, 1
br i1 %27, label %19, label %17
}