forked from OSchip/llvm-project
104 lines
4.6 KiB
LLVM
104 lines
4.6 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -O3 -S | FileCheck %s
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target datalayout = "e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-apple-macosx11.0.0"
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; We expect the loop to be vectorized even if it
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; is not unrolled.
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; Verify that fdiv is not sunk back into the loop
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; after getting hoisted - based on this C source:
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;
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; void vdiv(float *a, float b) {
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; for (int i = 0; i != 1024; ++i)
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; a[i] /= b;
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; }
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define void @vdiv(float* %a, float %b) #0 {
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; CHECK-LABEL: @vdiv(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[BROADCAST_SPLATINSERT:%.*]] = insertelement <4 x float> poison, float [[B:%.*]], i32 0
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; CHECK-NEXT: [[BROADCAST_SPLAT:%.*]] = shufflevector <4 x float> [[BROADCAST_SPLATINSERT]], <4 x float> poison, <4 x i32> zeroinitializer
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; 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]]
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; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
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; CHECK: vector.body:
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; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[ENTRY:%.*]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
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; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds float, float* [[A:%.*]], i64 [[INDEX]]
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; CHECK-NEXT: [[TMP2:%.*]] = bitcast float* [[TMP1]] to <4 x float>*
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; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <4 x float>, <4 x float>* [[TMP2]], align 4, !tbaa [[TBAA3:![0-9]+]]
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; CHECK-NEXT: [[TMP3:%.*]] = fmul fast <4 x float> [[WIDE_LOAD]], [[TMP0]]
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; CHECK-NEXT: [[TMP4:%.*]] = bitcast float* [[TMP1]] to <4 x float>*
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; CHECK-NEXT: store <4 x float> [[TMP3]], <4 x float>* [[TMP4]], align 4, !tbaa [[TBAA3]]
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; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
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; CHECK-NEXT: [[TMP5:%.*]] = icmp eq i64 [[INDEX_NEXT]], 1024
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; CHECK-NEXT: br i1 [[TMP5]], label [[FOR_COND_CLEANUP:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP7:![0-9]+]]
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; CHECK: for.cond.cleanup:
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; CHECK-NEXT: ret void
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;
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entry:
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%a.addr = alloca float*, align 8
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%b.addr = alloca float, align 4
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%i = alloca i32, align 4
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store float* %a, float** %a.addr, align 8, !tbaa !3
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store float %b, float* %b.addr, align 4, !tbaa !7
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%0 = bitcast i32* %i to i8*
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call void @llvm.lifetime.start.p0i8(i64 4, i8* %0) #2
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store i32 0, i32* %i, align 4, !tbaa !9
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br label %for.cond
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for.cond: ; preds = %for.inc, %entry
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%1 = load i32, i32* %i, align 4, !tbaa !9
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%cmp = icmp ne i32 %1, 1024
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br i1 %cmp, label %for.body, label %for.cond.cleanup
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for.cond.cleanup: ; preds = %for.cond
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%2 = bitcast i32* %i to i8*
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call void @llvm.lifetime.end.p0i8(i64 4, i8* %2) #2
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br label %for.end
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for.body: ; preds = %for.cond
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%3 = load float, float* %b.addr, align 4, !tbaa !7
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%4 = load float*, float** %a.addr, align 8, !tbaa !3
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%5 = load i32, i32* %i, align 4, !tbaa !9
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%idxprom = sext i32 %5 to i64
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%arrayidx = getelementptr inbounds float, float* %4, i64 %idxprom
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%6 = load float, float* %arrayidx, align 4, !tbaa !7
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%div = fdiv fast float %6, %3
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store float %div, float* %arrayidx, align 4, !tbaa !7
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br label %for.inc
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for.inc: ; preds = %for.body
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%7 = load i32, i32* %i, align 4, !tbaa !9
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%inc = add nsw i32 %7, 1
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store i32 %inc, i32* %i, align 4, !tbaa !9
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br label %for.cond, !llvm.loop !11
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for.end: ; preds = %for.cond.cleanup
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ret void
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}
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declare void @llvm.lifetime.start.p0i8(i64 immarg, i8* nocapture) #1
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declare void @llvm.lifetime.end.p0i8(i64 immarg, i8* nocapture) #1
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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" }
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attributes #1 = { argmemonly nofree nosync nounwind willreturn }
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attributes #2 = { nounwind }
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!llvm.module.flags = !{!0, !1}
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!llvm.ident = !{!2}
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!0 = !{i32 1, !"wchar_size", i32 4}
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!1 = !{i32 7, !"PIC Level", i32 2}
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!2 = !{!"clang version 13.0.0 (https://github.com/llvm/llvm-project.git 437fb428178716db014f75701f3cdea6dea63f59)"}
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!3 = !{!4, !4, i64 0}
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!4 = !{!"any pointer", !5, i64 0}
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!5 = !{!"omnipotent char", !6, i64 0}
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!6 = !{!"Simple C/C++ TBAA"}
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!7 = !{!8, !8, i64 0}
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!8 = !{!"float", !5, i64 0}
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!9 = !{!10, !10, i64 0}
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!10 = !{!"int", !5, i64 0}
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!11 = distinct !{!11, !12, !13}
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!12 = !{!"llvm.loop.mustprogress"}
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!13 = !{!"llvm.loop.unroll.disable"}
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