forked from OSchip/llvm-project
159 lines
5.9 KiB
LLVM
159 lines
5.9 KiB
LLVM
; RUN: opt -S -indvars < %s | FileCheck %s
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; Provide legal integer types.
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target datalayout = "n8:16:32:64"
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define void @test1(float* %autoc,
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float* %data,
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float %d, i32 %data_len, i32 %sample) nounwind {
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entry:
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%sub = sub i32 %data_len, %sample
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%cmp4 = icmp eq i32 %data_len, %sample
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br i1 %cmp4, label %for.end, label %for.body
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for.body: ; preds = %entry, %for.body
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%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 68719476736, %entry ]
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%temp = trunc i64 %indvars.iv to i32
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%add = add i32 %temp, %sample
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%idxprom = zext i32 %add to i64
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%arrayidx = getelementptr inbounds float, float* %data, i64 %idxprom
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%temp1 = load float, float* %arrayidx, align 4
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%mul = fmul float %temp1, %d
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%arrayidx2 = getelementptr inbounds float, float* %autoc, i64 %indvars.iv
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%temp2 = load float, float* %arrayidx2, align 4
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%add3 = fadd float %temp2, %mul
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store float %add3, float* %arrayidx2, align 4
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%indvars.iv.next = add i64 %indvars.iv, 1
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%temp3 = trunc i64 %indvars.iv.next to i32
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%cmp = icmp ult i32 %temp3, %sub
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br i1 %cmp, label %for.body, label %for.end
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for.end: ; preds = %for.body, %entry
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ret void
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; CHECK-LABEL: @test1(
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; With the given initial value for IV, it is not legal to widen
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; trip count to IV size
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; CHECK: %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
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; CHECK: %lftr.wideiv = trunc i64 %indvars.iv.next to i32
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; CHECK: %exitcond = icmp ne i32 %lftr.wideiv, %sub
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; CHECK: br i1 %exitcond, label %for.body, label %for.end.loopexit
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}
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define float @test2(float* %a,
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float* %b,
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i32 zeroext %m) local_unnamed_addr #0 {
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entry:
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%cmp5 = icmp ugt i32 %m, 500
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br i1 %cmp5, label %for.body.preheader, label %for.end
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for.body.preheader: ; preds = %entry
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br label %for.body
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for.body: ; preds = %for.body.preheader, %for.body
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%sum.07 = phi float [ %add, %for.body ], [ 0.000000e+00, %for.body.preheader ]
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%i.06 = phi i32 [ %inc, %for.body ], [ 500, %for.body.preheader ]
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%idxprom = zext i32 %i.06 to i64
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%arrayidx = getelementptr inbounds float, float* %b, i64 %idxprom
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%temp = load float, float* %arrayidx, align 4
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%arrayidx2 = getelementptr inbounds float, float* %a, i64 %idxprom
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%temp1 = load float, float* %arrayidx2, align 4
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%mul = fmul float %temp, %temp1
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%add = fadd float %sum.07, %mul
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%inc = add i32 %i.06, 1
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%cmp = icmp ult i32 %inc, %m
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br i1 %cmp, label %for.body, label %for.end.loopexit
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for.end.loopexit: ; preds = %for.body
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br label %for.end
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for.end: ; preds = %for.end.loopexit, %entry
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%sum.0.lcssa = phi float [ 0.000000e+00, %entry ], [ %add, %for.end.loopexit ]
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ret float %sum.0.lcssa
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; CHECK-LABEL: @test2(
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; Trip count should be widened and LFTR should canonicalize the condition
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; CHECK: %wide.trip.count = zext
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; CHECK: %exitcond = icmp ne i64 %indvars.iv.next, %wide.trip.count
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; CHECK: br i1 %exitcond
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}
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define float @test3(float* %b,
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i32 signext %m) local_unnamed_addr #0 {
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entry:
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%cmp5 = icmp sgt i32 %m, -10
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br i1 %cmp5, label %for.body.preheader, label %for.end
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for.body.preheader: ; preds = %entry
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br label %for.body
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for.body: ; preds = %for.body.preheader, %for.body
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%sum.07 = phi float [ %add1, %for.body ], [ 0.000000e+00, %for.body.preheader ]
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%i.06 = phi i32 [ %inc, %for.body ], [ -10, %for.body.preheader ]
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%add = add nsw i32 %i.06, 20
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%idxprom = sext i32 %add to i64
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%arrayidx = getelementptr inbounds float, float* %b, i64 %idxprom
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%temp = load float, float* %arrayidx, align 4
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%conv = sitofp i32 %i.06 to float
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%mul = fmul float %conv, %temp
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%add1 = fadd float %sum.07, %mul
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%inc = add nsw i32 %i.06, 1
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%cmp = icmp slt i32 %inc, %m
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br i1 %cmp, label %for.body, label %for.end.loopexit
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for.end.loopexit: ; preds = %for.body
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br label %for.end
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for.end: ; preds = %for.end.loopexit, %entry
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%sum.0.lcssa = phi float [ 0.000000e+00, %entry ], [ %add1, %for.end.loopexit ]
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ret float %sum.0.lcssa
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; CHECK-LABEL: @test3(
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; Trip count should be widened and LFTR should canonicalize the condition
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; CHECK: %wide.trip.count = sext
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; CHECK: %exitcond = icmp ne i64 %indvars.iv.next, %wide.trip.count
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; CHECK: br i1 %exitcond
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}
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define float @test4(float* %b,
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i32 signext %m) local_unnamed_addr #0 {
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entry:
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%cmp5 = icmp sgt i32 %m, 10
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br i1 %cmp5, label %for.body.preheader, label %for.end
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for.body.preheader: ; preds = %entry
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br label %for.body
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for.body: ; preds = %for.body.preheader, %for.body
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%sum.07 = phi float [ %add1, %for.body ], [ 0.000000e+00, %for.body.preheader ]
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%i.06 = phi i32 [ %inc, %for.body ], [ 10, %for.body.preheader ]
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%add = add nsw i32 %i.06, 20
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%idxprom = sext i32 %add to i64
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%arrayidx = getelementptr inbounds float, float* %b, i64 %idxprom
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%temp = load float, float* %arrayidx, align 4
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%conv = sitofp i32 %i.06 to float
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%mul = fmul float %conv, %temp
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%add1 = fadd float %sum.07, %mul
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%inc = add nsw i32 %i.06, 1
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%cmp = icmp slt i32 %inc, %m
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br i1 %cmp, label %for.body, label %for.end.loopexit
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for.end.loopexit: ; preds = %for.body
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%add1.lcssa = phi float [ %add1, %for.body ]
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br label %for.end
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for.end: ; preds = %for.end.loopexit, %entry
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%sum.0.lcssa = phi float [ 0.000000e+00, %entry ], [ %add1.lcssa, %for.end.loopexit ]
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ret float %sum.0.lcssa
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; CHECK-LABEL: @test4(
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; Trip count should be widened and LFTR should canonicalize the condition
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; CHECK: %wide.trip.count = zext
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; CHECK: %exitcond = icmp ne i64 %indvars.iv.next, %wide.trip.count
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; CHECK: br i1 %exitcond
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}
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