void unpack4(unsigned int *p, unsigned int *w) {
  int i;
  for (i = 0; i < 128; i += 32, p += 32, w += 4) {
    p[0] = (w[0] >> 28);
    p[1] = (w[0] >> 24) & 15;
    p[2] = (w[0] >> 20) & 15;
    p[3] = (w[0] >> 16) & 15;
    p[4] = (w[0] >> 12) & 15;
    p[5] = (w[0] >> 8) & 15;
    p[6] = (w[0] >> 4) & 15;
    p[7] = (w[0]) & 15;
    p[8] = (w[1] >> 28);
    p[9] = (w[1] >> 24) & 15;
    p[10] = (w[1] >> 20) & 15;
    p[11] = (w[1] >> 16) & 15;
    p[12] = (w[1] >> 12) & 15;
    p[13] = (w[1] >> 8) & 15;
    p[14] = (w[1] >> 4) & 15;
    p[15] = (w[1]) & 15;
    p[16] = (w[2] >> 28);
    p[17] = (w[2] >> 24) & 15;
    p[18] = (w[2] >> 20) & 15;
    p[19] = (w[2] >> 16) & 15;
    p[20] = (w[2] >> 12) & 15;
    p[21] = (w[2] >> 8) & 15;
    p[22] = (w[2] >> 4) & 15;
    p[23] = (w[2]) & 15;
    p[24] = (w[3] >> 28);
    p[25] = (w[3] >> 24) & 15;
    p[26] = (w[3] >> 20) & 15;
    p[27] = (w[3] >> 16) & 15;
    p[28] = (w[3] >> 12) & 15;
    p[29] = (w[3] >> 8) & 15;
    p[30] = (w[3] >> 4) & 15;
    p[31] = (w[3]) & 15;
  }
}


x86 assembly (clang, -O0):
<unpack4>:
push   %rbp
mov    %rsp,%rbp
mov    %rdi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
movl   $0x0,-0x14(%rbp)
cmpl   $0x80,-0x14(%rbp)
jge    13a7 <unpack4+0x2a7>
mov    -0x10(%rbp),%rax
mov    (%rax),%ecx
shr    $0x1c,%ecx
mov    -0x8(%rbp),%rax
mov    %ecx,(%rax)
mov    -0x10(%rbp),%rax
mov    (%rax),%ecx
shr    $0x18,%ecx
and    $0xf,%ecx
mov    -0x8(%rbp),%rax
mov    %ecx,0x4(%rax)
mov    -0x10(%rbp),%rax
mov    (%rax),%ecx
shr    $0x14,%ecx
and    $0xf,%ecx
mov    -0x8(%rbp),%rax
mov    %ecx,0x8(%rax)
mov    -0x10(%rbp),%rax
mov    (%rax),%ecx
shr    $0x10,%ecx
and    $0xf,%ecx
mov    -0x8(%rbp),%rax
mov    %ecx,0xc(%rax)
mov    -0x10(%rbp),%rax
mov    (%rax),%ecx
shr    $0xc,%ecx
and    $0xf,%ecx
mov    -0x8(%rbp),%rax
mov    %ecx,0x10(%rax)
mov    -0x10(%rbp),%rax
mov    (%rax),%ecx
shr    $0x8,%ecx
and    $0xf,%ecx
mov    -0x8(%rbp),%rax
mov    %ecx,0x14(%rax)
mov    -0x10(%rbp),%rax
mov    (%rax),%ecx
shr    $0x4,%ecx
and    $0xf,%ecx
mov    -0x8(%rbp),%rax
mov    %ecx,0x18(%rax)
mov    -0x10(%rbp),%rax
mov    (%rax),%ecx
and    $0xf,%ecx
mov    -0x8(%rbp),%rax
mov    %ecx,0x1c(%rax)
mov    -0x10(%rbp),%rax
mov    0x4(%rax),%ecx
shr    $0x1c,%ecx
mov    -0x8(%rbp),%rax
mov    %ecx,0x20(%rax)
mov    -0x10(%rbp),%rax
mov    0x4(%rax),%ecx
shr    $0x18,%ecx
and    $0xf,%ecx
mov    -0x8(%rbp),%rax
mov    %ecx,0x24(%rax)
mov    -0x10(%rbp),%rax
mov    0x4(%rax),%ecx
shr    $0x14,%ecx
and    $0xf,%ecx
mov    -0x8(%rbp),%rax
mov    %ecx,0x28(%rax)
mov    -0x10(%rbp),%rax
mov    0x4(%rax),%ecx
shr    $0x10,%ecx
and    $0xf,%ecx
mov    -0x8(%rbp),%rax
mov    %ecx,0x2c(%rax)
mov    -0x10(%rbp),%rax
mov    0x4(%rax),%ecx
shr    $0xc,%ecx
and    $0xf,%ecx
mov    -0x8(%rbp),%rax
mov    %ecx,0x30(%rax)
mov    -0x10(%rbp),%rax
mov    0x4(%rax),%ecx
shr    $0x8,%ecx
and    $0xf,%ecx
mov    -0x8(%rbp),%rax
mov    %ecx,0x34(%rax)
mov    -0x10(%rbp),%rax
mov    0x4(%rax),%ecx
shr    $0x4,%ecx
and    $0xf,%ecx
mov    -0x8(%rbp),%rax
mov    %ecx,0x38(%rax)
mov    -0x10(%rbp),%rax
mov    0x4(%rax),%ecx
and    $0xf,%ecx
mov    -0x8(%rbp),%rax
mov    %ecx,0x3c(%rax)
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%ecx
shr    $0x1c,%ecx
mov    -0x8(%rbp),%rax
mov    %ecx,0x40(%rax)
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%ecx
shr    $0x18,%ecx
and    $0xf,%ecx
mov    -0x8(%rbp),%rax
mov    %ecx,0x44(%rax)
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%ecx
shr    $0x14,%ecx
and    $0xf,%ecx
mov    -0x8(%rbp),%rax
mov    %ecx,0x48(%rax)
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%ecx
shr    $0x10,%ecx
and    $0xf,%ecx
mov    -0x8(%rbp),%rax
mov    %ecx,0x4c(%rax)
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%ecx
shr    $0xc,%ecx
and    $0xf,%ecx
mov    -0x8(%rbp),%rax
mov    %ecx,0x50(%rax)
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%ecx
shr    $0x8,%ecx
and    $0xf,%ecx
mov    -0x8(%rbp),%rax
mov    %ecx,0x54(%rax)
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%ecx
shr    $0x4,%ecx
and    $0xf,%ecx
mov    -0x8(%rbp),%rax
mov    %ecx,0x58(%rax)
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%ecx
and    $0xf,%ecx
mov    -0x8(%rbp),%rax
mov    %ecx,0x5c(%rax)
mov    -0x10(%rbp),%rax
mov    0xc(%rax),%ecx
shr    $0x1c,%ecx
mov    -0x8(%rbp),%rax
mov    %ecx,0x60(%rax)
mov    -0x10(%rbp),%rax
mov    0xc(%rax),%ecx
shr    $0x18,%ecx
and    $0xf,%ecx
mov    -0x8(%rbp),%rax
mov    %ecx,0x64(%rax)
mov    -0x10(%rbp),%rax
mov    0xc(%rax),%ecx
shr    $0x14,%ecx
and    $0xf,%ecx
mov    -0x8(%rbp),%rax
mov    %ecx,0x68(%rax)
mov    -0x10(%rbp),%rax
mov    0xc(%rax),%ecx
shr    $0x10,%ecx
and    $0xf,%ecx
mov    -0x8(%rbp),%rax
mov    %ecx,0x6c(%rax)
mov    -0x10(%rbp),%rax
mov    0xc(%rax),%ecx
shr    $0xc,%ecx
and    $0xf,%ecx
mov    -0x8(%rbp),%rax
mov    %ecx,0x70(%rax)
mov    -0x10(%rbp),%rax
mov    0xc(%rax),%ecx
shr    $0x8,%ecx
and    $0xf,%ecx
mov    -0x8(%rbp),%rax
mov    %ecx,0x74(%rax)
mov    -0x10(%rbp),%rax
mov    0xc(%rax),%ecx
shr    $0x4,%ecx
and    $0xf,%ecx
mov    -0x8(%rbp),%rax
mov    %ecx,0x78(%rax)
mov    -0x10(%rbp),%rax
mov    0xc(%rax),%ecx
and    $0xf,%ecx
mov    -0x8(%rbp),%rax
mov    %ecx,0x7c(%rax)
mov    -0x14(%rbp),%eax
add    $0x20,%eax
mov    %eax,-0x14(%rbp)
mov    -0x8(%rbp),%rax
add    $0x80,%rax
mov    %rax,-0x8(%rbp)
mov    -0x10(%rbp),%rax
add    $0x10,%rax
mov    %rax,-0x10(%rbp)
jmp    1113 <unpack4+0x13>
pop    %rbp
ret

x86 assembly (clang, -O2):
<unpack4>:
mov    $0xffffffe0,%eax
xor    %ecx,%ecx
nopw   0x0(%rax,%rax,1)
mov    (%rsi,%rcx,1),%edx
shr    $0x1c,%edx
mov    %edx,(%rdi,%rcx,8)
movzbl 0x3(%rsi,%rcx,1),%edx
and    $0xf,%edx
mov    %edx,0x4(%rdi,%rcx,8)
mov    (%rsi,%rcx,1),%edx
shr    $0x14,%edx
and    $0xf,%edx
mov    %edx,0x8(%rdi,%rcx,8)
movzwl 0x2(%rsi,%rcx,1),%edx
and    $0xf,%edx
mov    %edx,0xc(%rdi,%rcx,8)
mov    (%rsi,%rcx,1),%edx
shr    $0xc,%edx
and    $0xf,%edx
mov    %edx,0x10(%rdi,%rcx,8)
mov    (%rsi,%rcx,1),%edx
shr    $0x8,%edx
and    $0xf,%edx
mov    %edx,0x14(%rdi,%rcx,8)
mov    (%rsi,%rcx,1),%edx
shr    $0x4,%edx
and    $0xf,%edx
mov    %edx,0x18(%rdi,%rcx,8)
mov    (%rsi,%rcx,1),%edx
and    $0xf,%edx
mov    %edx,0x1c(%rdi,%rcx,8)
mov    0x4(%rsi,%rcx,1),%edx
shr    $0x1c,%edx
mov    %edx,0x20(%rdi,%rcx,8)
movzbl 0x7(%rsi,%rcx,1),%edx
and    $0xf,%edx
mov    %edx,0x24(%rdi,%rcx,8)
mov    0x4(%rsi,%rcx,1),%edx
shr    $0x14,%edx
and    $0xf,%edx
mov    %edx,0x28(%rdi,%rcx,8)
movzwl 0x6(%rsi,%rcx,1),%edx
and    $0xf,%edx
mov    %edx,0x2c(%rdi,%rcx,8)
mov    0x4(%rsi,%rcx,1),%edx
shr    $0xc,%edx
and    $0xf,%edx
mov    %edx,0x30(%rdi,%rcx,8)
mov    0x4(%rsi,%rcx,1),%edx
shr    $0x8,%edx
and    $0xf,%edx
mov    %edx,0x34(%rdi,%rcx,8)
mov    0x4(%rsi,%rcx,1),%edx
shr    $0x4,%edx
and    $0xf,%edx
mov    %edx,0x38(%rdi,%rcx,8)
mov    0x4(%rsi,%rcx,1),%edx
and    $0xf,%edx
mov    %edx,0x3c(%rdi,%rcx,8)
mov    0x8(%rsi,%rcx,1),%edx
shr    $0x1c,%edx
mov    %edx,0x40(%rdi,%rcx,8)
movzbl 0xb(%rsi,%rcx,1),%edx
and    $0xf,%edx
mov    %edx,0x44(%rdi,%rcx,8)
mov    0x8(%rsi,%rcx,1),%edx
shr    $0x14,%edx
and    $0xf,%edx
mov    %edx,0x48(%rdi,%rcx,8)
movzwl 0xa(%rsi,%rcx,1),%edx
and    $0xf,%edx
mov    %edx,0x4c(%rdi,%rcx,8)
mov    0x8(%rsi,%rcx,1),%edx
shr    $0xc,%edx
and    $0xf,%edx
mov    %edx,0x50(%rdi,%rcx,8)
mov    0x8(%rsi,%rcx,1),%edx
shr    $0x8,%edx
and    $0xf,%edx
mov    %edx,0x54(%rdi,%rcx,8)
mov    0x8(%rsi,%rcx,1),%edx
shr    $0x4,%edx
and    $0xf,%edx
mov    %edx,0x58(%rdi,%rcx,8)
mov    0x8(%rsi,%rcx,1),%edx
and    $0xf,%edx
mov    %edx,0x5c(%rdi,%rcx,8)
mov    0xc(%rsi,%rcx,1),%edx
shr    $0x1c,%edx
mov    %edx,0x60(%rdi,%rcx,8)
movzbl 0xf(%rsi,%rcx,1),%edx
and    $0xf,%edx
mov    %edx,0x64(%rdi,%rcx,8)
mov    0xc(%rsi,%rcx,1),%edx
shr    $0x14,%edx
and    $0xf,%edx
mov    %edx,0x68(%rdi,%rcx,8)
movzwl 0xe(%rsi,%rcx,1),%edx
and    $0xf,%edx
mov    %edx,0x6c(%rdi,%rcx,8)
mov    0xc(%rsi,%rcx,1),%edx
shr    $0xc,%edx
and    $0xf,%edx
mov    %edx,0x70(%rdi,%rcx,8)
mov    0xc(%rsi,%rcx,1),%edx
shr    $0x8,%edx
and    $0xf,%edx
mov    %edx,0x74(%rdi,%rcx,8)
mov    0xc(%rsi,%rcx,1),%edx
shr    $0x4,%edx
and    $0xf,%edx
mov    %edx,0x78(%rdi,%rcx,8)
mov    0xc(%rsi,%rcx,1),%edx
and    $0xf,%edx
mov    %edx,0x7c(%rdi,%rcx,8)
add    $0x20,%eax
add    $0x10,%rcx
cmp    $0x60,%eax
jb     1110 <unpack4+0x10>
ret

LLVM IR (-O0):
define void @unpack4(i32* %0, i32* %1) {
%3 = alloca i32*
%4 = alloca i32*
%5 = alloca i32
store i32* %0, i32** %3
store i32* %1, i32** %4
store i32 0, i32* %5
br label %6
6: ; preds = %226, %2
%7 = load i32, i32* %5
%8 = icmp slt i32 %7, 128
br i1 %8, label %9, label %233
9: ; preds = %6
%10 = load i32*, i32** %4
%11 = getelementptr inbounds i32, i32* %10, i64 0
%12 = load i32, i32* %11
%13 = lshr i32 %12, 28
%14 = load i32*, i32** %3
%15 = getelementptr inbounds i32, i32* %14, i64 0
store i32 %13, i32* %15
%16 = load i32*, i32** %4
%17 = getelementptr inbounds i32, i32* %16, i64 0
%18 = load i32, i32* %17
%19 = lshr i32 %18, 24
%20 = and i32 %19, 15
%21 = load i32*, i32** %3
%22 = getelementptr inbounds i32, i32* %21, i64 1
store i32 %20, i32* %22
%23 = load i32*, i32** %4
%24 = getelementptr inbounds i32, i32* %23, i64 0
%25 = load i32, i32* %24
%26 = lshr i32 %25, 20
%27 = and i32 %26, 15
%28 = load i32*, i32** %3
%29 = getelementptr inbounds i32, i32* %28, i64 2
store i32 %27, i32* %29
%30 = load i32*, i32** %4
%31 = getelementptr inbounds i32, i32* %30, i64 0
%32 = load i32, i32* %31
%33 = lshr i32 %32, 16
%34 = and i32 %33, 15
%35 = load i32*, i32** %3
%36 = getelementptr inbounds i32, i32* %35, i64 3
store i32 %34, i32* %36
%37 = load i32*, i32** %4
%38 = getelementptr inbounds i32, i32* %37, i64 0
%39 = load i32, i32* %38
%40 = lshr i32 %39, 12
%41 = and i32 %40, 15
%42 = load i32*, i32** %3
%43 = getelementptr inbounds i32, i32* %42, i64 4
store i32 %41, i32* %43
%44 = load i32*, i32** %4
%45 = getelementptr inbounds i32, i32* %44, i64 0
%46 = load i32, i32* %45
%47 = lshr i32 %46, 8
%48 = and i32 %47, 15
%49 = load i32*, i32** %3
%50 = getelementptr inbounds i32, i32* %49, i64 5
store i32 %48, i32* %50
%51 = load i32*, i32** %4
%52 = getelementptr inbounds i32, i32* %51, i64 0
%53 = load i32, i32* %52
%54 = lshr i32 %53, 4
%55 = and i32 %54, 15
%56 = load i32*, i32** %3
%57 = getelementptr inbounds i32, i32* %56, i64 6
store i32 %55, i32* %57
%58 = load i32*, i32** %4
%59 = getelementptr inbounds i32, i32* %58, i64 0
%60 = load i32, i32* %59
%61 = and i32 %60, 15
%62 = load i32*, i32** %3
%63 = getelementptr inbounds i32, i32* %62, i64 7
store i32 %61, i32* %63
%64 = load i32*, i32** %4
%65 = getelementptr inbounds i32, i32* %64, i64 1
%66 = load i32, i32* %65
%67 = lshr i32 %66, 28
%68 = load i32*, i32** %3
%69 = getelementptr inbounds i32, i32* %68, i64 8
store i32 %67, i32* %69
%70 = load i32*, i32** %4
%71 = getelementptr inbounds i32, i32* %70, i64 1
%72 = load i32, i32* %71
%73 = lshr i32 %72, 24
%74 = and i32 %73, 15
%75 = load i32*, i32** %3
%76 = getelementptr inbounds i32, i32* %75, i64 9
store i32 %74, i32* %76
%77 = load i32*, i32** %4
%78 = getelementptr inbounds i32, i32* %77, i64 1
%79 = load i32, i32* %78
%80 = lshr i32 %79, 20
%81 = and i32 %80, 15
%82 = load i32*, i32** %3
%83 = getelementptr inbounds i32, i32* %82, i64 10
store i32 %81, i32* %83
%84 = load i32*, i32** %4
%85 = getelementptr inbounds i32, i32* %84, i64 1
%86 = load i32, i32* %85
%87 = lshr i32 %86, 16
%88 = and i32 %87, 15
%89 = load i32*, i32** %3
%90 = getelementptr inbounds i32, i32* %89, i64 11
store i32 %88, i32* %90
%91 = load i32*, i32** %4
%92 = getelementptr inbounds i32, i32* %91, i64 1
%93 = load i32, i32* %92
%94 = lshr i32 %93, 12
%95 = and i32 %94, 15
%96 = load i32*, i32** %3
%97 = getelementptr inbounds i32, i32* %96, i64 12
store i32 %95, i32* %97
%98 = load i32*, i32** %4
%99 = getelementptr inbounds i32, i32* %98, i64 1
%100 = load i32, i32* %99
%101 = lshr i32 %100, 8
%102 = and i32 %101, 15
%103 = load i32*, i32** %3
%104 = getelementptr inbounds i32, i32* %103, i64 13
store i32 %102, i32* %104
%105 = load i32*, i32** %4
%106 = getelementptr inbounds i32, i32* %105, i64 1
%107 = load i32, i32* %106
%108 = lshr i32 %107, 4
%109 = and i32 %108, 15
%110 = load i32*, i32** %3
%111 = getelementptr inbounds i32, i32* %110, i64 14
store i32 %109, i32* %111
%112 = load i32*, i32** %4
%113 = getelementptr inbounds i32, i32* %112, i64 1
%114 = load i32, i32* %113
%115 = and i32 %114, 15
%116 = load i32*, i32** %3
%117 = getelementptr inbounds i32, i32* %116, i64 15
store i32 %115, i32* %117
%118 = load i32*, i32** %4
%119 = getelementptr inbounds i32, i32* %118, i64 2
%120 = load i32, i32* %119
%121 = lshr i32 %120, 28
%122 = load i32*, i32** %3
%123 = getelementptr inbounds i32, i32* %122, i64 16
store i32 %121, i32* %123
%124 = load i32*, i32** %4
%125 = getelementptr inbounds i32, i32* %124, i64 2
%126 = load i32, i32* %125
%127 = lshr i32 %126, 24
%128 = and i32 %127, 15
%129 = load i32*, i32** %3
%130 = getelementptr inbounds i32, i32* %129, i64 17
store i32 %128, i32* %130
%131 = load i32*, i32** %4
%132 = getelementptr inbounds i32, i32* %131, i64 2
%133 = load i32, i32* %132
%134 = lshr i32 %133, 20
%135 = and i32 %134, 15
%136 = load i32*, i32** %3
%137 = getelementptr inbounds i32, i32* %136, i64 18
store i32 %135, i32* %137
%138 = load i32*, i32** %4
%139 = getelementptr inbounds i32, i32* %138, i64 2
%140 = load i32, i32* %139
%141 = lshr i32 %140, 16
%142 = and i32 %141, 15
%143 = load i32*, i32** %3
%144 = getelementptr inbounds i32, i32* %143, i64 19
store i32 %142, i32* %144
%145 = load i32*, i32** %4
%146 = getelementptr inbounds i32, i32* %145, i64 2
%147 = load i32, i32* %146
%148 = lshr i32 %147, 12
%149 = and i32 %148, 15
%150 = load i32*, i32** %3
%151 = getelementptr inbounds i32, i32* %150, i64 20
store i32 %149, i32* %151
%152 = load i32*, i32** %4
%153 = getelementptr inbounds i32, i32* %152, i64 2
%154 = load i32, i32* %153
%155 = lshr i32 %154, 8
%156 = and i32 %155, 15
%157 = load i32*, i32** %3
%158 = getelementptr inbounds i32, i32* %157, i64 21
store i32 %156, i32* %158
%159 = load i32*, i32** %4
%160 = getelementptr inbounds i32, i32* %159, i64 2
%161 = load i32, i32* %160
%162 = lshr i32 %161, 4
%163 = and i32 %162, 15
%164 = load i32*, i32** %3
%165 = getelementptr inbounds i32, i32* %164, i64 22
store i32 %163, i32* %165
%166 = load i32*, i32** %4
%167 = getelementptr inbounds i32, i32* %166, i64 2
%168 = load i32, i32* %167
%169 = and i32 %168, 15
%170 = load i32*, i32** %3
%171 = getelementptr inbounds i32, i32* %170, i64 23
store i32 %169, i32* %171
%172 = load i32*, i32** %4
%173 = getelementptr inbounds i32, i32* %172, i64 3
%174 = load i32, i32* %173
%175 = lshr i32 %174, 28
%176 = load i32*, i32** %3
%177 = getelementptr inbounds i32, i32* %176, i64 24
store i32 %175, i32* %177
%178 = load i32*, i32** %4
%179 = getelementptr inbounds i32, i32* %178, i64 3
%180 = load i32, i32* %179
%181 = lshr i32 %180, 24
%182 = and i32 %181, 15
%183 = load i32*, i32** %3
%184 = getelementptr inbounds i32, i32* %183, i64 25
store i32 %182, i32* %184
%185 = load i32*, i32** %4
%186 = getelementptr inbounds i32, i32* %185, i64 3
%187 = load i32, i32* %186
%188 = lshr i32 %187, 20
%189 = and i32 %188, 15
%190 = load i32*, i32** %3
%191 = getelementptr inbounds i32, i32* %190, i64 26
store i32 %189, i32* %191
%192 = load i32*, i32** %4
%193 = getelementptr inbounds i32, i32* %192, i64 3
%194 = load i32, i32* %193
%195 = lshr i32 %194, 16
%196 = and i32 %195, 15
%197 = load i32*, i32** %3
%198 = getelementptr inbounds i32, i32* %197, i64 27
store i32 %196, i32* %198
%199 = load i32*, i32** %4
%200 = getelementptr inbounds i32, i32* %199, i64 3
%201 = load i32, i32* %200
%202 = lshr i32 %201, 12
%203 = and i32 %202, 15
%204 = load i32*, i32** %3
%205 = getelementptr inbounds i32, i32* %204, i64 28
store i32 %203, i32* %205
%206 = load i32*, i32** %4
%207 = getelementptr inbounds i32, i32* %206, i64 3
%208 = load i32, i32* %207
%209 = lshr i32 %208, 8
%210 = and i32 %209, 15
%211 = load i32*, i32** %3
%212 = getelementptr inbounds i32, i32* %211, i64 29
store i32 %210, i32* %212
%213 = load i32*, i32** %4
%214 = getelementptr inbounds i32, i32* %213, i64 3
%215 = load i32, i32* %214
%216 = lshr i32 %215, 4
%217 = and i32 %216, 15
%218 = load i32*, i32** %3
%219 = getelementptr inbounds i32, i32* %218, i64 30
store i32 %217, i32* %219
%220 = load i32*, i32** %4
%221 = getelementptr inbounds i32, i32* %220, i64 3
%222 = load i32, i32* %221
%223 = and i32 %222, 15
%224 = load i32*, i32** %3
%225 = getelementptr inbounds i32, i32* %224, i64 31
store i32 %223, i32* %225
br label %226
226: ; preds = %9
%227 = load i32, i32* %5
%228 = add nsw i32 %227, 32
store i32 %228, i32* %5
%229 = load i32*, i32** %3
%230 = getelementptr inbounds i32, i32* %229, i64 32
store i32* %230, i32** %3
%231 = load i32*, i32** %4
%232 = getelementptr inbounds i32, i32* %231, i64 4
store i32* %232, i32** %4
br label %6
233: ; preds = %6
ret void
}

LLVM IR (-O2):
define void @unpack4(i32* writeonly %0, i32* nocapture %1) {
br label %3
3: ; preds = %2, %3
%4 = phi i32 [ 0, %2 ], [ %129, %3 ]
%5 = phi i32* [ %1, %2 ], [ %131, %3 ]
%6 = phi i32* [ %0, %2 ], [ %130, %3 ]
%7 = load i32, i32* %5
%8 = lshr i32 %7, 28
store i32 %8, i32* %6
%9 = load i32, i32* %5
%10 = lshr i32 %9, 24
%11 = and i32 %10, 15
%12 = getelementptr inbounds i32, i32* %6, i64 1
store i32 %11, i32* %12
%13 = load i32, i32* %5
%14 = lshr i32 %13, 20
%15 = and i32 %14, 15
%16 = getelementptr inbounds i32, i32* %6, i64 2
store i32 %15, i32* %16
%17 = load i32, i32* %5
%18 = lshr i32 %17, 16
%19 = and i32 %18, 15
%20 = getelementptr inbounds i32, i32* %6, i64 3
store i32 %19, i32* %20
%21 = load i32, i32* %5
%22 = lshr i32 %21, 12
%23 = and i32 %22, 15
%24 = getelementptr inbounds i32, i32* %6, i64 4
store i32 %23, i32* %24
%25 = load i32, i32* %5
%26 = lshr i32 %25, 8
%27 = and i32 %26, 15
%28 = getelementptr inbounds i32, i32* %6, i64 5
store i32 %27, i32* %28
%29 = load i32, i32* %5
%30 = lshr i32 %29, 4
%31 = and i32 %30, 15
%32 = getelementptr inbounds i32, i32* %6, i64 6
store i32 %31, i32* %32
%33 = load i32, i32* %5
%34 = and i32 %33, 15
%35 = getelementptr inbounds i32, i32* %6, i64 7
store i32 %34, i32* %35
%36 = getelementptr inbounds i32, i32* %5, i64 1
%37 = load i32, i32* %36
%38 = lshr i32 %37, 28
%39 = getelementptr inbounds i32, i32* %6, i64 8
store i32 %38, i32* %39
%40 = load i32, i32* %36
%41 = lshr i32 %40, 24
%42 = and i32 %41, 15
%43 = getelementptr inbounds i32, i32* %6, i64 9
store i32 %42, i32* %43
%44 = load i32, i32* %36
%45 = lshr i32 %44, 20
%46 = and i32 %45, 15
%47 = getelementptr inbounds i32, i32* %6, i64 10
store i32 %46, i32* %47
%48 = load i32, i32* %36
%49 = lshr i32 %48, 16
%50 = and i32 %49, 15
%51 = getelementptr inbounds i32, i32* %6, i64 11
store i32 %50, i32* %51
%52 = load i32, i32* %36
%53 = lshr i32 %52, 12
%54 = and i32 %53, 15
%55 = getelementptr inbounds i32, i32* %6, i64 12
store i32 %54, i32* %55
%56 = load i32, i32* %36
%57 = lshr i32 %56, 8
%58 = and i32 %57, 15
%59 = getelementptr inbounds i32, i32* %6, i64 13
store i32 %58, i32* %59
%60 = load i32, i32* %36
%61 = lshr i32 %60, 4
%62 = and i32 %61, 15
%63 = getelementptr inbounds i32, i32* %6, i64 14
store i32 %62, i32* %63
%64 = load i32, i32* %36
%65 = and i32 %64, 15
%66 = getelementptr inbounds i32, i32* %6, i64 15
store i32 %65, i32* %66
%67 = getelementptr inbounds i32, i32* %5, i64 2
%68 = load i32, i32* %67
%69 = lshr i32 %68, 28
%70 = getelementptr inbounds i32, i32* %6, i64 16
store i32 %69, i32* %70
%71 = load i32, i32* %67
%72 = lshr i32 %71, 24
%73 = and i32 %72, 15
%74 = getelementptr inbounds i32, i32* %6, i64 17
store i32 %73, i32* %74
%75 = load i32, i32* %67
%76 = lshr i32 %75, 20
%77 = and i32 %76, 15
%78 = getelementptr inbounds i32, i32* %6, i64 18
store i32 %77, i32* %78
%79 = load i32, i32* %67
%80 = lshr i32 %79, 16
%81 = and i32 %80, 15
%82 = getelementptr inbounds i32, i32* %6, i64 19
store i32 %81, i32* %82
%83 = load i32, i32* %67
%84 = lshr i32 %83, 12
%85 = and i32 %84, 15
%86 = getelementptr inbounds i32, i32* %6, i64 20
store i32 %85, i32* %86
%87 = load i32, i32* %67
%88 = lshr i32 %87, 8
%89 = and i32 %88, 15
%90 = getelementptr inbounds i32, i32* %6, i64 21
store i32 %89, i32* %90
%91 = load i32, i32* %67
%92 = lshr i32 %91, 4
%93 = and i32 %92, 15
%94 = getelementptr inbounds i32, i32* %6, i64 22
store i32 %93, i32* %94
%95 = load i32, i32* %67
%96 = and i32 %95, 15
%97 = getelementptr inbounds i32, i32* %6, i64 23
store i32 %96, i32* %97
%98 = getelementptr inbounds i32, i32* %5, i64 3
%99 = load i32, i32* %98
%100 = lshr i32 %99, 28
%101 = getelementptr inbounds i32, i32* %6, i64 24
store i32 %100, i32* %101
%102 = load i32, i32* %98
%103 = lshr i32 %102, 24
%104 = and i32 %103, 15
%105 = getelementptr inbounds i32, i32* %6, i64 25
store i32 %104, i32* %105
%106 = load i32, i32* %98
%107 = lshr i32 %106, 20
%108 = and i32 %107, 15
%109 = getelementptr inbounds i32, i32* %6, i64 26
store i32 %108, i32* %109
%110 = load i32, i32* %98
%111 = lshr i32 %110, 16
%112 = and i32 %111, 15
%113 = getelementptr inbounds i32, i32* %6, i64 27
store i32 %112, i32* %113
%114 = load i32, i32* %98
%115 = lshr i32 %114, 12
%116 = and i32 %115, 15
%117 = getelementptr inbounds i32, i32* %6, i64 28
store i32 %116, i32* %117
%118 = load i32, i32* %98
%119 = lshr i32 %118, 8
%120 = and i32 %119, 15
%121 = getelementptr inbounds i32, i32* %6, i64 29
store i32 %120, i32* %121
%122 = load i32, i32* %98
%123 = lshr i32 %122, 4
%124 = and i32 %123, 15
%125 = getelementptr inbounds i32, i32* %6, i64 30
store i32 %124, i32* %125
%126 = load i32, i32* %98
%127 = and i32 %126, 15
%128 = getelementptr inbounds i32, i32* %6, i64 31
store i32 %127, i32* %128
%129 = add nuw nsw i32 %4, 32
%130 = getelementptr inbounds i32, i32* %6, i64 32
%131 = getelementptr inbounds i32, i32* %5, i64 4
%132 = icmp ult i32 %4, 96
br i1 %132, label %3, label %133
133: ; preds = %3
ret void
}