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