forked from OSchip/llvm-project
86 lines
3.6 KiB
LLVM
86 lines
3.6 KiB
LLVM
; RUN: opt < %s -loop-vectorize -force-vector-interleave=1 -force-vector-width=4 -dce -instcombine -S | FileCheck %s
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target 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"
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; Make sure we vectorize this loop:
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; int foo(float *a, float *b, int n) {
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; for (int i=0; i<n; ++i)
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; a[i] = b[i] * 3;
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; }
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;CHECK-LABEL: define i32 @foo
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;CHECK: for.body.preheader:
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;CHECK: br i1 %min.iters.check, label %scalar.ph, label %vector.memcheck, !dbg [[BODY_LOC:![0-9]+]]
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;CHECK: vector.memcheck:
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;CHECK: br i1 %memcheck.conflict, label %scalar.ph, label %vector.ph, !dbg [[BODY_LOC]]
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;CHECK: load <4 x float>
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define i32 @foo(float* nocapture %a, float* nocapture %b, i32 %n) nounwind uwtable ssp {
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entry:
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%cmp6 = icmp sgt i32 %n, 0, !dbg !6
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br i1 %cmp6, label %for.body, label %for.end, !dbg !6
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for.body: ; preds = %entry, %for.body
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%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ], !dbg !7
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%arrayidx = getelementptr inbounds float, float* %b, i64 %indvars.iv, !dbg !7
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%0 = load float, float* %arrayidx, align 4, !dbg !7
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%mul = fmul float %0, 3.000000e+00, !dbg !7
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%arrayidx2 = getelementptr inbounds float, float* %a, i64 %indvars.iv, !dbg !7
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store float %mul, float* %arrayidx2, align 4, !dbg !7
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%indvars.iv.next = add i64 %indvars.iv, 1, !dbg !7
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%lftr.wideiv = trunc i64 %indvars.iv.next to i32, !dbg !7
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%exitcond = icmp eq i32 %lftr.wideiv, %n, !dbg !7
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br i1 %exitcond, label %for.end, label %for.body, !dbg !7
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for.end: ; preds = %for.body, %entry
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ret i32 undef, !dbg !8
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}
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; Make sure that we try to vectorize loops with a runtime check if the
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; dependency check fails.
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; CHECK-LABEL: test_runtime_check
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; CHECK: <4 x float>
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define void @test_runtime_check(float* %a, float %b, i64 %offset, i64 %offset2, i64 %n) {
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entry:
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br label %for.body
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for.body:
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%iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ]
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%ind.sum = add i64 %iv, %offset
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%arr.idx = getelementptr inbounds float, float* %a, i64 %ind.sum
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%l1 = load float, float* %arr.idx, align 4
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%ind.sum2 = add i64 %iv, %offset2
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%arr.idx2 = getelementptr inbounds float, float* %a, i64 %ind.sum2
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%l2 = load float, float* %arr.idx2, align 4
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%m = fmul fast float %b, %l2
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%ad = fadd fast float %l1, %m
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store float %ad, float* %arr.idx, align 4
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%iv.next = add nuw nsw i64 %iv, 1
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%exitcond = icmp eq i64 %iv.next, %n
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br i1 %exitcond, label %loopexit, label %for.body
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loopexit:
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ret void
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}
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; CHECK: [[BODY_LOC]] = !DILocation(line: 101, column: 1, scope: !{{.*}})
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!llvm.module.flags = !{!0, !1}
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!llvm.dbg.cu = !{!9}
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!0 = !{i32 2, !"Dwarf Version", i32 4}
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!1 = !{i32 2, !"Debug Info Version", i32 3}
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!2 = !{}
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!3 = !DISubroutineType(types: !2)
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!4 = !DIFile(filename: "test.cpp", directory: "/tmp")
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!5 = distinct !DISubprogram(name: "foo", scope: !4, file: !4, line: 99, type: !3, isLocal: false, isDefinition: true, scopeLine: 100, flags: DIFlagPrototyped, isOptimized: false, unit: !9, variables: !2)
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!6 = !DILocation(line: 100, column: 1, scope: !5)
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!7 = !DILocation(line: 101, column: 1, scope: !5)
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!8 = !DILocation(line: 102, column: 1, scope: !5)
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!9 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang",
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file: !10,
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isOptimized: true, flags: "-O2",
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splitDebugFilename: "abc.debug", emissionKind: 2)
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!10 = !DIFile(filename: "path/to/file", directory: "/path/to/dir")
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!11 = !{i32 2, !"Debug Info Version", i32 3}
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