; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -O3 -S | FileCheck %s
target datalayout = "e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-apple-macosx11.0.0"
; We expect the loop to be vectorized even if it
; is not unrolled.
; Verify that fdiv is not sunk back into the loop
; after getting hoisted - based on this C source:
;
; void vdiv(ptr a, float b) {
; for (int i = 0; i != 1024; ++i)
; a[i] /= b;
; }
define void @vdiv(ptr %a, float %b) #0 {
; CHECK-LABEL: @vdiv(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[BROADCAST_SPLATINSERT:%.*]] = insertelement <4 x float> poison, float [[B:%.*]], i64 0
; CHECK-NEXT: [[BROADCAST_SPLAT:%.*]] = shufflevector <4 x float> [[BROADCAST_SPLATINSERT]], <4 x float> poison, <4 x i32> zeroinitializer
; CHECK-NEXT: [[TMP0:%.*]] = fdiv fast <4 x float> <float 1.000000e+00, float 1.000000e+00, float 1.000000e+00, float 1.000000e+00>, [[BROADCAST_SPLAT]]
; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
; CHECK: vector.body:
; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[ENTRY:%.*]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds float, ptr [[A:%.*]], i64 [[INDEX]]
; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <4 x float>, ptr [[TMP1]], align 4, !tbaa [[TBAA3:![0-9]+]]
; CHECK-NEXT: [[TMP3:%.*]] = fmul fast <4 x float> [[WIDE_LOAD]], [[TMP0]]
; CHECK-NEXT: store <4 x float> [[TMP3]], ptr [[TMP1]], align 4, !tbaa [[TBAA3]]
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-NEXT: [[TMP5:%.*]] = icmp eq i64 [[INDEX_NEXT]], 1024
; CHECK-NEXT: br i1 [[TMP5]], label [[FOR_COND_CLEANUP:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP7:![0-9]+]]
; CHECK: for.cond.cleanup:
; CHECK-NEXT: ret void
;
entry:
%a.addr = alloca ptr, align 8
%b.addr = alloca float, align 4
%i = alloca i32, align 4
store ptr %a, ptr %a.addr, align 8, !tbaa !3
store float %b, ptr %b.addr, align 4, !tbaa !7
call void @llvm.lifetime.start.p0(i64 4, ptr %i) #2
store i32 0, ptr %i, align 4, !tbaa !9
br label %for.cond
for.cond: ; preds = %for.inc, %entry
%0 = load i32, ptr %i, align 4, !tbaa !9
%cmp = icmp ne i32 %0, 1024
br i1 %cmp, label %for.body, label %for.cond.cleanup
for.cond.cleanup: ; preds = %for.cond
call void @llvm.lifetime.end.p0(i64 4, ptr %i) #2
br label %for.end
for.body: ; preds = %for.cond
%1 = load float, ptr %b.addr, align 4, !tbaa !7
%2 = load ptr, ptr %a.addr, align 8, !tbaa !3
%3 = load i32, ptr %i, align 4, !tbaa !9
%idxprom = sext i32 %3 to i64
%arrayidx = getelementptr inbounds float, ptr %2, i64 %idxprom
%4 = load float, ptr %arrayidx, align 4, !tbaa !7
%div = fdiv fast float %4, %1
store float %div, ptr %arrayidx, align 4, !tbaa !7
br label %for.inc
for.inc: ; preds = %for.body
%5 = load i32, ptr %i, align 4, !tbaa !9
%inc = add nsw i32 %5, 1
store i32 %inc, ptr %i, align 4, !tbaa !9
br label %for.cond, !llvm.loop !11
for.end: ; preds = %for.cond.cleanup
ret void
}
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1
attributes #0 = { nounwind ssp uwtable "frame-pointer"="all" "min-legal-vector-width"="0" "no-infs-fp-math"="true" "no-nans-fp-math"="true" "no-signed-zeros-fp-math"="true" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="penryn" "target-features"="+cx16,+cx8,+fxsr,+mmx,+sahf,+sse,+sse2,+sse3,+sse4.1,+ssse3,+x87" "tune-cpu"="generic" "unsafe-fp-math"="true" }
attributes #1 = { argmemonly nofree nosync nounwind willreturn }
attributes #2 = { nounwind }
!llvm.module.flags = !{!0, !1}
!llvm.ident = !{!2}
!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 7, !"PIC Level", i32 2}
!2 = !{!"clang version 13.0.0 (https://github.com/llvm/llvm-project.git 437fb428178716db014f75701f3cdea6dea63f59)"}
!3 = !{!4, !4, i64 0}
!4 = !{!"any pointer", !5, i64 0}
!5 = !{!"omnipotent char", !6, i64 0}
!6 = !{!"Simple C/C++ TBAA"}
!7 = !{!8, !8, i64 0}
!8 = !{!"float", !5, i64 0}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !5, i64 0}
!11 = distinct !{!11, !12, !13}
!12 = !{!"llvm.loop.mustprogress"}
!13 = !{!"llvm.loop.unroll.disable"}
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