95685faeee
Except the seed uniform instructions (conditional branch and consecutive ptr instructions), dependencies to be added into uniform set should only be used by existing uniform instructions or intructions outside of current loop. Differential Revision: http://reviews.llvm.org/D21755 llvm-svn: 274262
51 lines
2.0 KiB
LLVM
51 lines
2.0 KiB
LLVM
; RUN: opt < %s -loop-vectorize -mtriple=x86_64-apple-macosx10.8.0 -mcpu=corei7 -debug-only=loop-vectorize -S 2>&1 | FileCheck %s
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; REQUIRES: asserts
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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; CHECK-LABEL: test
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; CHECK-DAG: LV: Found uniform instruction: %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
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; CHECK-DAG: LV: Found uniform instruction: %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
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; CHECK-DAG: LV: Found uniform instruction: %exitcond = icmp eq i64 %indvars.iv, 1599
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define void @test(float* noalias nocapture %a, float* noalias nocapture readonly %b) #0 {
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entry:
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br label %for.body
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for.body: ; preds = %for.body, %entry
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%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
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%arrayidx = getelementptr inbounds float, float* %b, i64 %indvars.iv
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%tmp0 = load float, float* %arrayidx, align 4
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%add = fadd float %tmp0, 1.000000e+00
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%arrayidx5 = getelementptr inbounds float, float* %a, i64 %indvars.iv
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store float %add, float* %arrayidx5, align 4
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
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%exitcond = icmp eq i64 %indvars.iv, 1599
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br i1 %exitcond, label %for.end, label %for.body
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for.end: ; preds = %for.body
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ret void
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}
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; CHECK-LABEL: foo
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; CHECK-DAG: LV: Found uniform instruction: %cond = icmp eq i64 %i.next, %n
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; CHECK-DAG: LV: Found uniform instruction: %tmp1 = getelementptr inbounds i32, i32* %a, i32 %tmp0
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; CHECK-NOT: LV: Found uniform instruction: %i = phi i64 [ %i.next, %for.body ], [ 0, %entry ]
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define void @foo(i32* %a, 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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%i = phi i64 [ %i.next, %for.body ], [ 0, %entry ]
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%tmp0 = trunc i64 %i to i32
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%tmp1 = getelementptr inbounds i32, i32* %a, i32 %tmp0
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store i32 %tmp0, i32* %tmp1, align 4
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%i.next = add nuw nsw i64 %i, 1
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%cond = icmp eq i64 %i.next, %n
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br i1 %cond, label %for.end, label %for.body
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for.end:
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ret void
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}
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