| ; RUN: opt < %s -basicaa -slp-vectorizer -S -mtriple=x86_64-apple-macosx10.8.0 -mcpu=corei7 |
| |
| target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-apple-darwin13.3.0" |
| |
| @a = common global double 0.000000e+00, align 8 |
| |
| define i32 @fn1() { |
| entry: |
| %init = load double, double* @a, align 8 |
| br label %loop |
| |
| loop: |
| %phi = phi double [ %add2, %loop ], [ %init, %entry ] |
| %postadd1_phi = phi double [ %postadd1, %loop ], [ %init, %entry ] |
| %postadd2_phi = phi double [ %postadd2, %loop ], [ %init, %entry ] |
| %add1 = fadd double %postadd1_phi, undef |
| %add2 = fadd double %postadd2_phi, %phi |
| %mul2 = fmul double %add2, 0.000000e+00 |
| %binaryop_B = fadd double %postadd1_phi, %mul2 |
| %mul1 = fmul double %add1, 0.000000e+00 |
| %tmp = fadd double %postadd2_phi, 0.000000e+00 |
| |
| ; tryToVectorize() starts with this binary instruction. |
| ; At the same time vectorization wraps around the loop, vectorizes |
| ; postadd1/2 and eventually binary_V and tmp. So binary_V itself is replaced |
| ; with a vector instruction. |
| ; The SLPVectorizer crashed because it tried to use binary_V |
| ; after vectorization to re-arrange instructions. |
| %binary_V = fadd double %mul1, %binaryop_B |
| |
| %postadd1 = fadd double %binary_V, 0.000000e+00 |
| %postadd2 = fadd double %tmp, 1.000000e+00 |
| %tobool = fcmp une double %postadd1, 0.000000e+00 |
| br i1 %tobool, label %exit, label %loop |
| |
| exit: |
| ret i32 1 |
| } |
| |
| |