1; RUN: opt -S -loop-vectorize -force-vector-width=2 -force-vector-interleave=1 < %s | FileCheck %s
2
3target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
4
5; Make sure we can vectorize loops with functions to math library functions.
6; They might read the rounding mode but we are only vectorizing loops that
7; contain a limited set of function calls and none of them sets the rounding
8; mode, so vectorizing them is safe.
9
10; CHECK-LABEL: @test(
11; CHECK: <2 x double>
12
13define void @test(double* %d, double %t) {
14entry:
15  br label %for.body
16
17for.body:
18  %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
19  %arrayidx = getelementptr inbounds double, double* %d, i64 %indvars.iv
20  %0 = load double, double* %arrayidx, align 8
21  %1 = tail call double @llvm.pow.f64(double %0, double %t)
22  store double %1, double* %arrayidx, align 8
23  %indvars.iv.next = add i64 %indvars.iv, 1
24  %lftr.wideiv = trunc i64 %indvars.iv.next to i32
25  %exitcond = icmp ne i32 %lftr.wideiv, 128
26  br i1 %exitcond, label %for.body, label %for.end
27
28for.end:
29  ret void
30}
31
32declare double @llvm.pow.f64(double, double)
33