void corner_strmm_nt_4x3_lib4(float *A, float *B, float *C) {
  const int bs = 4;
  const int lda = bs;
  const int ldc = bs;
  float a_0, a_1, a_2, a_3, b_0, b_1, b_2, b_3,
      c_00 = 0, c_01 = 0, c_02 = 0, c_10 = 0, c_11 = 0, c_12 = 0, c_20 = 0,
      c_21 = 0, c_22 = 0, c_30 = 0, c_31 = 0, c_32 = 0;
  a_0 = A[0 + lda * 0];
  a_1 = A[1 + lda * 0];
  a_2 = A[2 + lda * 0];
  a_3 = A[3 + lda * 0];
  b_0 = B[0 + lda * 0];
  c_00 += a_0 * b_0;
  c_10 += a_1 * b_0;
  c_20 += a_2 * b_0;
  c_30 += a_3 * b_0;
  a_0 = A[0 + lda * 1];
  a_1 = A[1 + lda * 1];
  a_2 = A[2 + lda * 1];
  a_3 = A[3 + lda * 1];
  b_0 = B[0 + lda * 1];
  b_1 = B[1 + lda * 1];
  c_00 += a_0 * b_0;
  c_10 += a_1 * b_0;
  c_20 += a_2 * b_0;
  c_30 += a_3 * b_0;
  c_01 += a_0 * b_1;
  c_11 += a_1 * b_1;
  c_21 += a_2 * b_1;
  c_31 += a_3 * b_1;
  a_0 = A[0 + lda * 2];
  a_1 = A[1 + lda * 2];
  a_2 = A[2 + lda * 2];
  a_3 = A[3 + lda * 2];
  b_0 = B[0 + lda * 2];
  b_1 = B[1 + lda * 2];
  b_2 = B[2 + lda * 2];
  c_00 += a_0 * b_0;
  c_10 += a_1 * b_0;
  c_20 += a_2 * b_0;
  c_30 += a_3 * b_0;
  c_01 += a_0 * b_1;
  c_11 += a_1 * b_1;
  c_21 += a_2 * b_1;
  c_31 += a_3 * b_1;
  c_02 += a_0 * b_2;
  c_12 += a_1 * b_2;
  c_22 += a_2 * b_2;
  c_32 += a_3 * b_2;
  C[0 + ldc * 0] = c_00;
  C[1 + ldc * 0] = c_10;
  C[2 + ldc * 0] = c_20;
  C[3 + ldc * 0] = c_30;
  C[0 + ldc * 1] = c_01;
  C[1 + ldc * 1] = c_11;
  C[2 + ldc * 1] = c_21;
  C[3 + ldc * 1] = c_31;
  C[0 + ldc * 2] = c_02;
  C[1 + ldc * 2] = c_12;
  C[2 + ldc * 2] = c_22;
  C[3 + ldc * 2] = c_32;
}


x86 assembly (clang, -O0):
<corner_strmm_nt_4x3_lib4>:
push   %rbp
mov    %rsp,%rbp
mov    %rdi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
mov    %rdx,-0x18(%rbp)
movl   $0x4,-0x1c(%rbp)
movl   $0x4,-0x20(%rbp)
movl   $0x4,-0x24(%rbp)
xorps  %xmm0,%xmm0
movss  %xmm0,-0x48(%rbp)
xorps  %xmm0,%xmm0
movss  %xmm0,-0x4c(%rbp)
xorps  %xmm0,%xmm0
movss  %xmm0,-0x50(%rbp)
xorps  %xmm0,%xmm0
movss  %xmm0,-0x54(%rbp)
xorps  %xmm0,%xmm0
movss  %xmm0,-0x58(%rbp)
xorps  %xmm0,%xmm0
movss  %xmm0,-0x5c(%rbp)
xorps  %xmm0,%xmm0
movss  %xmm0,-0x60(%rbp)
xorps  %xmm0,%xmm0
movss  %xmm0,-0x64(%rbp)
xorps  %xmm0,%xmm0
movss  %xmm0,-0x68(%rbp)
xorps  %xmm0,%xmm0
movss  %xmm0,-0x6c(%rbp)
xorps  %xmm0,%xmm0
movss  %xmm0,-0x70(%rbp)
xorps  %xmm0,%xmm0
movss  %xmm0,-0x74(%rbp)
mov    -0x8(%rbp),%rax
movss  (%rax),%xmm0
movss  %xmm0,-0x28(%rbp)
mov    -0x8(%rbp),%rax
movss  0x4(%rax),%xmm0
movss  %xmm0,-0x2c(%rbp)
mov    -0x8(%rbp),%rax
movss  0x8(%rax),%xmm0
movss  %xmm0,-0x30(%rbp)
mov    -0x8(%rbp),%rax
movss  0xc(%rax),%xmm0
movss  %xmm0,-0x34(%rbp)
mov    -0x10(%rbp),%rax
movss  (%rax),%xmm0
movss  %xmm0,-0x38(%rbp)
movss  -0x28(%rbp),%xmm0
movss  -0x38(%rbp),%xmm2
movss  -0x48(%rbp),%xmm1
mulss  %xmm2,%xmm0
addss  %xmm1,%xmm0
movss  %xmm0,-0x48(%rbp)
movss  -0x2c(%rbp),%xmm0
movss  -0x38(%rbp),%xmm2
movss  -0x54(%rbp),%xmm1
mulss  %xmm2,%xmm0
addss  %xmm1,%xmm0
movss  %xmm0,-0x54(%rbp)
movss  -0x30(%rbp),%xmm0
movss  -0x38(%rbp),%xmm2
movss  -0x60(%rbp),%xmm1
mulss  %xmm2,%xmm0
addss  %xmm1,%xmm0
movss  %xmm0,-0x60(%rbp)
movss  -0x34(%rbp),%xmm0
movss  -0x38(%rbp),%xmm2
movss  -0x6c(%rbp),%xmm1
mulss  %xmm2,%xmm0
addss  %xmm1,%xmm0
movss  %xmm0,-0x6c(%rbp)
mov    -0x8(%rbp),%rax
movss  0x10(%rax),%xmm0
movss  %xmm0,-0x28(%rbp)
mov    -0x8(%rbp),%rax
movss  0x14(%rax),%xmm0
movss  %xmm0,-0x2c(%rbp)
mov    -0x8(%rbp),%rax
movss  0x18(%rax),%xmm0
movss  %xmm0,-0x30(%rbp)
mov    -0x8(%rbp),%rax
movss  0x1c(%rax),%xmm0
movss  %xmm0,-0x34(%rbp)
mov    -0x10(%rbp),%rax
movss  0x10(%rax),%xmm0
movss  %xmm0,-0x38(%rbp)
mov    -0x10(%rbp),%rax
movss  0x14(%rax),%xmm0
movss  %xmm0,-0x3c(%rbp)
movss  -0x28(%rbp),%xmm0
movss  -0x38(%rbp),%xmm2
movss  -0x48(%rbp),%xmm1
mulss  %xmm2,%xmm0
addss  %xmm1,%xmm0
movss  %xmm0,-0x48(%rbp)
movss  -0x2c(%rbp),%xmm0
movss  -0x38(%rbp),%xmm2
movss  -0x54(%rbp),%xmm1
mulss  %xmm2,%xmm0
addss  %xmm1,%xmm0
movss  %xmm0,-0x54(%rbp)
movss  -0x30(%rbp),%xmm0
movss  -0x38(%rbp),%xmm2
movss  -0x60(%rbp),%xmm1
mulss  %xmm2,%xmm0
addss  %xmm1,%xmm0
movss  %xmm0,-0x60(%rbp)
movss  -0x34(%rbp),%xmm0
movss  -0x38(%rbp),%xmm2
movss  -0x6c(%rbp),%xmm1
mulss  %xmm2,%xmm0
addss  %xmm1,%xmm0
movss  %xmm0,-0x6c(%rbp)
movss  -0x28(%rbp),%xmm0
movss  -0x3c(%rbp),%xmm2
movss  -0x4c(%rbp),%xmm1
mulss  %xmm2,%xmm0
addss  %xmm1,%xmm0
movss  %xmm0,-0x4c(%rbp)
movss  -0x2c(%rbp),%xmm0
movss  -0x3c(%rbp),%xmm2
movss  -0x58(%rbp),%xmm1
mulss  %xmm2,%xmm0
addss  %xmm1,%xmm0
movss  %xmm0,-0x58(%rbp)
movss  -0x30(%rbp),%xmm0
movss  -0x3c(%rbp),%xmm2
movss  -0x64(%rbp),%xmm1
mulss  %xmm2,%xmm0
addss  %xmm1,%xmm0
movss  %xmm0,-0x64(%rbp)
movss  -0x34(%rbp),%xmm0
movss  -0x3c(%rbp),%xmm2
movss  -0x70(%rbp),%xmm1
mulss  %xmm2,%xmm0
addss  %xmm1,%xmm0
movss  %xmm0,-0x70(%rbp)
mov    -0x8(%rbp),%rax
movss  0x20(%rax),%xmm0
movss  %xmm0,-0x28(%rbp)
mov    -0x8(%rbp),%rax
movss  0x24(%rax),%xmm0
movss  %xmm0,-0x2c(%rbp)
mov    -0x8(%rbp),%rax
movss  0x28(%rax),%xmm0
movss  %xmm0,-0x30(%rbp)
mov    -0x8(%rbp),%rax
movss  0x2c(%rax),%xmm0
movss  %xmm0,-0x34(%rbp)
mov    -0x10(%rbp),%rax
movss  0x20(%rax),%xmm0
movss  %xmm0,-0x38(%rbp)
mov    -0x10(%rbp),%rax
movss  0x24(%rax),%xmm0
movss  %xmm0,-0x3c(%rbp)
mov    -0x10(%rbp),%rax
movss  0x28(%rax),%xmm0
movss  %xmm0,-0x40(%rbp)
movss  -0x28(%rbp),%xmm0
movss  -0x38(%rbp),%xmm2
movss  -0x48(%rbp),%xmm1
mulss  %xmm2,%xmm0
addss  %xmm1,%xmm0
movss  %xmm0,-0x48(%rbp)
movss  -0x2c(%rbp),%xmm0
movss  -0x38(%rbp),%xmm2
movss  -0x54(%rbp),%xmm1
mulss  %xmm2,%xmm0
addss  %xmm1,%xmm0
movss  %xmm0,-0x54(%rbp)
movss  -0x30(%rbp),%xmm0
movss  -0x38(%rbp),%xmm2
movss  -0x60(%rbp),%xmm1
mulss  %xmm2,%xmm0
addss  %xmm1,%xmm0
movss  %xmm0,-0x60(%rbp)
movss  -0x34(%rbp),%xmm0
movss  -0x38(%rbp),%xmm2
movss  -0x6c(%rbp),%xmm1
mulss  %xmm2,%xmm0
addss  %xmm1,%xmm0
movss  %xmm0,-0x6c(%rbp)
movss  -0x28(%rbp),%xmm0
movss  -0x3c(%rbp),%xmm2
movss  -0x4c(%rbp),%xmm1
mulss  %xmm2,%xmm0
addss  %xmm1,%xmm0
movss  %xmm0,-0x4c(%rbp)
movss  -0x2c(%rbp),%xmm0
movss  -0x3c(%rbp),%xmm2
movss  -0x58(%rbp),%xmm1
mulss  %xmm2,%xmm0
addss  %xmm1,%xmm0
movss  %xmm0,-0x58(%rbp)
movss  -0x30(%rbp),%xmm0
movss  -0x3c(%rbp),%xmm2
movss  -0x64(%rbp),%xmm1
mulss  %xmm2,%xmm0
addss  %xmm1,%xmm0
movss  %xmm0,-0x64(%rbp)
movss  -0x34(%rbp),%xmm0
movss  -0x3c(%rbp),%xmm2
movss  -0x70(%rbp),%xmm1
mulss  %xmm2,%xmm0
addss  %xmm1,%xmm0
movss  %xmm0,-0x70(%rbp)
movss  -0x28(%rbp),%xmm0
movss  -0x40(%rbp),%xmm2
movss  -0x50(%rbp),%xmm1
mulss  %xmm2,%xmm0
addss  %xmm1,%xmm0
movss  %xmm0,-0x50(%rbp)
movss  -0x2c(%rbp),%xmm0
movss  -0x40(%rbp),%xmm2
movss  -0x5c(%rbp),%xmm1
mulss  %xmm2,%xmm0
addss  %xmm1,%xmm0
movss  %xmm0,-0x5c(%rbp)
movss  -0x30(%rbp),%xmm0
movss  -0x40(%rbp),%xmm2
movss  -0x68(%rbp),%xmm1
mulss  %xmm2,%xmm0
addss  %xmm1,%xmm0
movss  %xmm0,-0x68(%rbp)
movss  -0x34(%rbp),%xmm0
movss  -0x40(%rbp),%xmm2
movss  -0x74(%rbp),%xmm1
mulss  %xmm2,%xmm0
addss  %xmm1,%xmm0
movss  %xmm0,-0x74(%rbp)
movss  -0x48(%rbp),%xmm0
mov    -0x18(%rbp),%rax
movss  %xmm0,(%rax)
movss  -0x54(%rbp),%xmm0
mov    -0x18(%rbp),%rax
movss  %xmm0,0x4(%rax)
movss  -0x60(%rbp),%xmm0
mov    -0x18(%rbp),%rax
movss  %xmm0,0x8(%rax)
movss  -0x6c(%rbp),%xmm0
mov    -0x18(%rbp),%rax
movss  %xmm0,0xc(%rax)
movss  -0x4c(%rbp),%xmm0
mov    -0x18(%rbp),%rax
movss  %xmm0,0x10(%rax)
movss  -0x58(%rbp),%xmm0
mov    -0x18(%rbp),%rax
movss  %xmm0,0x14(%rax)
movss  -0x64(%rbp),%xmm0
mov    -0x18(%rbp),%rax
movss  %xmm0,0x18(%rax)
movss  -0x70(%rbp),%xmm0
mov    -0x18(%rbp),%rax
movss  %xmm0,0x1c(%rax)
movss  -0x50(%rbp),%xmm0
mov    -0x18(%rbp),%rax
movss  %xmm0,0x20(%rax)
movss  -0x5c(%rbp),%xmm0
mov    -0x18(%rbp),%rax
movss  %xmm0,0x24(%rax)
movss  -0x68(%rbp),%xmm0
mov    -0x18(%rbp),%rax
movss  %xmm0,0x28(%rax)
movss  -0x74(%rbp),%xmm0
mov    -0x18(%rbp),%rax
movss  %xmm0,0x2c(%rax)
pop    %rbp
ret

x86 assembly (clang, -O2):
<corner_strmm_nt_4x3_lib4>:
movss  (%rsi),%xmm2
movss  0x10(%rsi),%xmm4
movss  0x14(%rsi),%xmm1
movss  0x20(%rsi),%xmm0
shufps $0x0,%xmm2,%xmm2
movups (%rdi),%xmm5
mulps  %xmm2,%xmm5
movups 0x10(%rdi),%xmm6
movups 0x20(%rdi),%xmm3
xorps  %xmm2,%xmm2
addps  %xmm2,%xmm5
shufps $0x0,%xmm4,%xmm4
mulps  %xmm6,%xmm4
addps  %xmm5,%xmm4
shufps $0x0,%xmm1,%xmm1
mulps  %xmm6,%xmm1
addps  %xmm2,%xmm1
shufps $0x0,%xmm0,%xmm0
mulps  %xmm3,%xmm0
addps  %xmm4,%xmm0
movss  0x24(%rsi),%xmm4
shufps $0x0,%xmm4,%xmm4
mulps  %xmm3,%xmm4
addps  %xmm1,%xmm4
movss  0x28(%rsi),%xmm1
shufps $0x0,%xmm1,%xmm1
mulps  %xmm3,%xmm1
addps  %xmm2,%xmm1
movups %xmm0,(%rdx)
movups %xmm4,0x10(%rdx)
movups %xmm1,0x20(%rdx)
ret

LLVM IR (-O0):
define void @corner_strmm_nt_4x3_lib4(float* %0, float* %1, float* %2) {
%4 = alloca float*
%5 = alloca float*
%6 = alloca float*
%7 = alloca i32
%8 = alloca i32
%9 = alloca i32
%10 = alloca float
%11 = alloca float
%12 = alloca float
%13 = alloca float
%14 = alloca float
%15 = alloca float
%16 = alloca float
%17 = alloca float
%18 = alloca float
%19 = alloca float
%20 = alloca float
%21 = alloca float
%22 = alloca float
%23 = alloca float
%24 = alloca float
%25 = alloca float
%26 = alloca float
%27 = alloca float
%28 = alloca float
%29 = alloca float
store float* %0, float** %4
store float* %1, float** %5
store float* %2, float** %6
store i32 4, i32* %7
store i32 4, i32* %8
store i32 4, i32* %9
store float 0.000000e+00, float* %18
store float 0.000000e+00, float* %19
store float 0.000000e+00, float* %20
store float 0.000000e+00, float* %21
store float 0.000000e+00, float* %22
store float 0.000000e+00, float* %23
store float 0.000000e+00, float* %24
store float 0.000000e+00, float* %25
store float 0.000000e+00, float* %26
store float 0.000000e+00, float* %27
store float 0.000000e+00, float* %28
store float 0.000000e+00, float* %29
%30 = load float*, float** %4
%31 = getelementptr inbounds float, float* %30, i64 0
%32 = load float, float* %31
store float %32, float* %10
%33 = load float*, float** %4
%34 = getelementptr inbounds float, float* %33, i64 1
%35 = load float, float* %34
store float %35, float* %11
%36 = load float*, float** %4
%37 = getelementptr inbounds float, float* %36, i64 2
%38 = load float, float* %37
store float %38, float* %12
%39 = load float*, float** %4
%40 = getelementptr inbounds float, float* %39, i64 3
%41 = load float, float* %40
store float %41, float* %13
%42 = load float*, float** %5
%43 = getelementptr inbounds float, float* %42, i64 0
%44 = load float, float* %43
store float %44, float* %14
%45 = load float, float* %10
%46 = load float, float* %14
%47 = load float, float* %18
%48 = call float @llvm.fmuladd.f32(float %45, float %46, float %47)
store float %48, float* %18
%49 = load float, float* %11
%50 = load float, float* %14
%51 = load float, float* %21
%52 = call float @llvm.fmuladd.f32(float %49, float %50, float %51)
store float %52, float* %21
%53 = load float, float* %12
%54 = load float, float* %14
%55 = load float, float* %24
%56 = call float @llvm.fmuladd.f32(float %53, float %54, float %55)
store float %56, float* %24
%57 = load float, float* %13
%58 = load float, float* %14
%59 = load float, float* %27
%60 = call float @llvm.fmuladd.f32(float %57, float %58, float %59)
store float %60, float* %27
%61 = load float*, float** %4
%62 = getelementptr inbounds float, float* %61, i64 4
%63 = load float, float* %62
store float %63, float* %10
%64 = load float*, float** %4
%65 = getelementptr inbounds float, float* %64, i64 5
%66 = load float, float* %65
store float %66, float* %11
%67 = load float*, float** %4
%68 = getelementptr inbounds float, float* %67, i64 6
%69 = load float, float* %68
store float %69, float* %12
%70 = load float*, float** %4
%71 = getelementptr inbounds float, float* %70, i64 7
%72 = load float, float* %71
store float %72, float* %13
%73 = load float*, float** %5
%74 = getelementptr inbounds float, float* %73, i64 4
%75 = load float, float* %74
store float %75, float* %14
%76 = load float*, float** %5
%77 = getelementptr inbounds float, float* %76, i64 5
%78 = load float, float* %77
store float %78, float* %15
%79 = load float, float* %10
%80 = load float, float* %14
%81 = load float, float* %18
%82 = call float @llvm.fmuladd.f32(float %79, float %80, float %81)
store float %82, float* %18
%83 = load float, float* %11
%84 = load float, float* %14
%85 = load float, float* %21
%86 = call float @llvm.fmuladd.f32(float %83, float %84, float %85)
store float %86, float* %21
%87 = load float, float* %12
%88 = load float, float* %14
%89 = load float, float* %24
%90 = call float @llvm.fmuladd.f32(float %87, float %88, float %89)
store float %90, float* %24
%91 = load float, float* %13
%92 = load float, float* %14
%93 = load float, float* %27
%94 = call float @llvm.fmuladd.f32(float %91, float %92, float %93)
store float %94, float* %27
%95 = load float, float* %10
%96 = load float, float* %15
%97 = load float, float* %19
%98 = call float @llvm.fmuladd.f32(float %95, float %96, float %97)
store float %98, float* %19
%99 = load float, float* %11
%100 = load float, float* %15
%101 = load float, float* %22
%102 = call float @llvm.fmuladd.f32(float %99, float %100, float %101)
store float %102, float* %22
%103 = load float, float* %12
%104 = load float, float* %15
%105 = load float, float* %25
%106 = call float @llvm.fmuladd.f32(float %103, float %104, float %105)
store float %106, float* %25
%107 = load float, float* %13
%108 = load float, float* %15
%109 = load float, float* %28
%110 = call float @llvm.fmuladd.f32(float %107, float %108, float %109)
store float %110, float* %28
%111 = load float*, float** %4
%112 = getelementptr inbounds float, float* %111, i64 8
%113 = load float, float* %112
store float %113, float* %10
%114 = load float*, float** %4
%115 = getelementptr inbounds float, float* %114, i64 9
%116 = load float, float* %115
store float %116, float* %11
%117 = load float*, float** %4
%118 = getelementptr inbounds float, float* %117, i64 10
%119 = load float, float* %118
store float %119, float* %12
%120 = load float*, float** %4
%121 = getelementptr inbounds float, float* %120, i64 11
%122 = load float, float* %121
store float %122, float* %13
%123 = load float*, float** %5
%124 = getelementptr inbounds float, float* %123, i64 8
%125 = load float, float* %124
store float %125, float* %14
%126 = load float*, float** %5
%127 = getelementptr inbounds float, float* %126, i64 9
%128 = load float, float* %127
store float %128, float* %15
%129 = load float*, float** %5
%130 = getelementptr inbounds float, float* %129, i64 10
%131 = load float, float* %130
store float %131, float* %16
%132 = load float, float* %10
%133 = load float, float* %14
%134 = load float, float* %18
%135 = call float @llvm.fmuladd.f32(float %132, float %133, float %134)
store float %135, float* %18
%136 = load float, float* %11
%137 = load float, float* %14
%138 = load float, float* %21
%139 = call float @llvm.fmuladd.f32(float %136, float %137, float %138)
store float %139, float* %21
%140 = load float, float* %12
%141 = load float, float* %14
%142 = load float, float* %24
%143 = call float @llvm.fmuladd.f32(float %140, float %141, float %142)
store float %143, float* %24
%144 = load float, float* %13
%145 = load float, float* %14
%146 = load float, float* %27
%147 = call float @llvm.fmuladd.f32(float %144, float %145, float %146)
store float %147, float* %27
%148 = load float, float* %10
%149 = load float, float* %15
%150 = load float, float* %19
%151 = call float @llvm.fmuladd.f32(float %148, float %149, float %150)
store float %151, float* %19
%152 = load float, float* %11
%153 = load float, float* %15
%154 = load float, float* %22
%155 = call float @llvm.fmuladd.f32(float %152, float %153, float %154)
store float %155, float* %22
%156 = load float, float* %12
%157 = load float, float* %15
%158 = load float, float* %25
%159 = call float @llvm.fmuladd.f32(float %156, float %157, float %158)
store float %159, float* %25
%160 = load float, float* %13
%161 = load float, float* %15
%162 = load float, float* %28
%163 = call float @llvm.fmuladd.f32(float %160, float %161, float %162)
store float %163, float* %28
%164 = load float, float* %10
%165 = load float, float* %16
%166 = load float, float* %20
%167 = call float @llvm.fmuladd.f32(float %164, float %165, float %166)
store float %167, float* %20
%168 = load float, float* %11
%169 = load float, float* %16
%170 = load float, float* %23
%171 = call float @llvm.fmuladd.f32(float %168, float %169, float %170)
store float %171, float* %23
%172 = load float, float* %12
%173 = load float, float* %16
%174 = load float, float* %26
%175 = call float @llvm.fmuladd.f32(float %172, float %173, float %174)
store float %175, float* %26
%176 = load float, float* %13
%177 = load float, float* %16
%178 = load float, float* %29
%179 = call float @llvm.fmuladd.f32(float %176, float %177, float %178)
store float %179, float* %29
%180 = load float, float* %18
%181 = load float*, float** %6
%182 = getelementptr inbounds float, float* %181, i64 0
store float %180, float* %182
%183 = load float, float* %21
%184 = load float*, float** %6
%185 = getelementptr inbounds float, float* %184, i64 1
store float %183, float* %185
%186 = load float, float* %24
%187 = load float*, float** %6
%188 = getelementptr inbounds float, float* %187, i64 2
store float %186, float* %188
%189 = load float, float* %27
%190 = load float*, float** %6
%191 = getelementptr inbounds float, float* %190, i64 3
store float %189, float* %191
%192 = load float, float* %19
%193 = load float*, float** %6
%194 = getelementptr inbounds float, float* %193, i64 4
store float %192, float* %194
%195 = load float, float* %22
%196 = load float*, float** %6
%197 = getelementptr inbounds float, float* %196, i64 5
store float %195, float* %197
%198 = load float, float* %25
%199 = load float*, float** %6
%200 = getelementptr inbounds float, float* %199, i64 6
store float %198, float* %200
%201 = load float, float* %28
%202 = load float*, float** %6
%203 = getelementptr inbounds float, float* %202, i64 7
store float %201, float* %203
%204 = load float, float* %20
%205 = load float*, float** %6
%206 = getelementptr inbounds float, float* %205, i64 8
store float %204, float* %206
%207 = load float, float* %23
%208 = load float*, float** %6
%209 = getelementptr inbounds float, float* %208, i64 9
store float %207, float* %209
%210 = load float, float* %26
%211 = load float*, float** %6
%212 = getelementptr inbounds float, float* %211, i64 10
store float %210, float* %212
%213 = load float, float* %29
%214 = load float*, float** %6
%215 = getelementptr inbounds float, float* %214, i64 11
store float %213, float* %215
ret void
}

LLVM IR (-O2):
define void @corner_strmm_nt_4x3_lib4(float* nocapture %0, float* nocapture %1, float* nocapture writeonly %2) {
%4 = bitcast float* %0 to <4 x float>*
%5 = load <4 x float>, <4 x float>* %4
%6 = load float, float* %1
%7 = insertelement <4 x float> poison, float %6, i64 0
%8 = shufflevector <4 x float> %7, <4 x float> poison, <4 x i32> zeroinitializer
%9 = call <4 x float> @llvm.fmuladd.v4f32(<4 x float> %5, <4 x float> %8, <4 x float> zeroinitializer)
%10 = getelementptr inbounds float, float* %0, i64 4
%11 = bitcast float* %10 to <4 x float>*
%12 = load <4 x float>, <4 x float>* %11
%13 = getelementptr inbounds float, float* %1, i64 4
%14 = load float, float* %13
%15 = getelementptr inbounds float, float* %1, i64 5
%16 = load float, float* %15
%17 = insertelement <4 x float> poison, float %14, i64 0
%18 = shufflevector <4 x float> %17, <4 x float> poison, <4 x i32> zeroinitializer
%19 = call <4 x float> @llvm.fmuladd.v4f32(<4 x float> %12, <4 x float> %18, <4 x float> %9)
%20 = insertelement <4 x float> poison, float %16, i64 0
%21 = shufflevector <4 x float> %20, <4 x float> poison, <4 x i32> zeroinitializer
%22 = call <4 x float> @llvm.fmuladd.v4f32(<4 x float> %12, <4 x float> %21, <4 x float> zeroinitializer)
%23 = getelementptr inbounds float, float* %0, i64 8
%24 = bitcast float* %23 to <4 x float>*
%25 = load <4 x float>, <4 x float>* %24
%26 = getelementptr inbounds float, float* %1, i64 8
%27 = load float, float* %26
%28 = getelementptr inbounds float, float* %1, i64 9
%29 = load float, float* %28
%30 = getelementptr inbounds float, float* %1, i64 10
%31 = load float, float* %30
%32 = insertelement <4 x float> poison, float %27, i64 0
%33 = shufflevector <4 x float> %32, <4 x float> poison, <4 x i32> zeroinitializer
%34 = call <4 x float> @llvm.fmuladd.v4f32(<4 x float> %25, <4 x float> %33, <4 x float> %19)
%35 = insertelement <4 x float> poison, float %29, i64 0
%36 = shufflevector <4 x float> %35, <4 x float> poison, <4 x i32> zeroinitializer
%37 = call <4 x float> @llvm.fmuladd.v4f32(<4 x float> %25, <4 x float> %36, <4 x float> %22)
%38 = insertelement <4 x float> poison, float %31, i64 0
%39 = shufflevector <4 x float> %38, <4 x float> poison, <4 x i32> zeroinitializer
%40 = call <4 x float> @llvm.fmuladd.v4f32(<4 x float> %25, <4 x float> %39, <4 x float> zeroinitializer)
%41 = bitcast float* %2 to <4 x float>*
store <4 x float> %34, <4 x float>* %41
%42 = getelementptr inbounds float, float* %2, i64 4
%43 = bitcast float* %42 to <4 x float>*
store <4 x float> %37, <4 x float>* %43
%44 = getelementptr inbounds float, float* %2, i64 8
%45 = bitcast float* %44 to <4 x float>*
store <4 x float> %40, <4 x float>* %45
ret void
}