1 ; RUN: opt -force-vector-interleave=2 -force-vector-width=4 -loop-vectorize -pass-remarks-analysis=loop-vectorize -disable-output < %s 2>&1 | FileCheck %s
3 ; CHECK: remark: mixed-precision.c:3:26: floating point conversion changes vector width. Mixed floating point precision requires an up/down cast that will negatively impact performance.
4 define void @f(float* noalias nocapture %X, i64 %N) {
12 %i = phi i64 [ %inc, %for.body ], [ 0, %entry ]
13 %arrayidx = getelementptr inbounds float, float* %X, i64 %i
14 %0 = load float, float* %arrayidx, align 4
15 %conv = fpext float %0 to double, !dbg !9
16 %mul = fmul double %conv, 0x3FD5555555555555
17 %conv3 = fptrunc double %mul to float
18 store float %conv3, float* %arrayidx, align 4
19 %inc = add nuw i64 %i, 1
20 %exitcond.not = icmp eq i64 %inc, %N
21 br i1 %exitcond.not, label %for.cond.cleanup, label %for.body
24 ; CHECK: remark: mixed-precision.c:8:8: floating point conversion changes vector width. Mixed floating point precision requires an up/down cast that will negatively impact performance.
25 ; CHECK: remark: mixed-precision.c:7:16: floating point conversion changes vector width. Mixed floating point precision requires an up/down cast that will negatively impact performance.
26 ; CHECK-NOT: remark: mixed-precision.c:7:16: floating point conversion changes vector width. Mixed floating point precision requires an up/down cast that will negatively impact performance.
27 define void @g(float* noalias nocapture %X, float* noalias nocapture %Y, i64 %N) {
30 store double 0x400921FB54442D18, double* %pi
31 %fac = load double, double* %pi
35 %i = phi i64 [ %inc, %for.body ], [ 0, %entry ]
36 %arrayidx = getelementptr inbounds float, float* %X, i64 %i
37 %0 = load float, float* %arrayidx, align 4
38 %conv = fpext float %0 to double, !dbg !10
39 %mul = fmul double %conv, %fac
40 %conv1 = fptrunc double %mul to float
41 store float %conv1, float* %arrayidx, align 4
42 %arrayidx5 = getelementptr inbounds float, float* %Y, i64 %i
43 %1 = load float, float* %arrayidx5, align 4
44 %conv2 = fpext float %1 to double, !dbg !11
45 %mul2 = fmul double %conv2, %fac
46 %conv3 = fptrunc double %mul2 to float
47 store float %conv3, float* %arrayidx5, align 4
48 %inc = add nuw nsw i64 %i, 1
49 %exitcond.not = icmp eq i64 %inc, %N
50 br i1 %exitcond.not, label %for.cond.cleanup, label %for.body
57 !llvm.module.flags = !{!3, !4}
59 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 12.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: NoDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)
60 !1 = !DIFile(filename: "mixed-precision.c", directory: "/tmp/mixed-precision.c")
62 !3 = !{i32 2, !"Debug Info Version", i32 3}
63 !4 = !{i32 1, !"wchar_size", i32 4}
64 !6 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 1, type: !8, scopeLine: 1, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2)
65 !7 = distinct !DISubprogram(name: "g", scope: !1, file: !1, line: 5, type: !8, scopeLine: 5, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2)
66 !8 = !DISubroutineType(types: !2)
67 !9 = !DILocation(line: 3, column: 26, scope: !6)
68 !10 = !DILocation(line: 7, column: 16, scope: !7)
69 !11 = !DILocation(line: 8, column: 8, scope: !7)