1 ; RUN: opt -loop-vectorize -force-vector-width=2 -pass-remarks-missed='loop-vectorize' -S < %s 2>&1 | FileCheck %s
3 ; CHECK: remark: <unknown>:0:0: loop not vectorized: integer loop induction variable could not be identified
5 ; Test-case ('-O2 -ffast-math') from PR38800.
6 ; (Set '-force-vector-width=2' to enable vector code generation.)
8 ; No integral induction variable in the source-code caused a compiler-crash
9 ; when attempting to vectorize. With the fix, a remark indicating why it
10 ; wasn't vectorized is produced
12 ;void foo(float *ptr, float val) {
14 ; for (f = 0.1f; f < 1.0f; f += 0.01f)
18 define void @foo(float* nocapture %ptr, float %val) local_unnamed_addr {
20 %ptr.promoted = load float, float* %ptr, align 4
23 for.body: ; preds = %entry, %for.body
24 %add5 = phi float [ %ptr.promoted, %entry ], [ %add, %for.body ]
25 %f.04 = phi float [ 0x3FB99999A0000000, %entry ], [ %add1, %for.body ]
26 %add = fadd fast float %add5, %val
27 %add1 = fadd fast float %f.04, 0x3F847AE140000000
28 %cmp = fcmp fast olt float %add1, 1.000000e+00
29 br i1 %cmp, label %for.body, label %for.end
31 for.end: ; preds = %for.body
32 store float %add, float* %ptr, align 4