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; RUN: opt -basicaa -loop-vectorize -enable-mem-access-versioning -force-vector-width=2 -force-vector-interleave=1 < %s -S | FileCheck %s
target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
; Check that we version this loop with speculating the value 1 for symbolic
; strides. This also checks that the symbolic stride information is correctly
; propagated to the memcheck generation. Without this the loop wouldn't
; vectorize because we couldn't determine the array bounds for the required
; memchecks.
; CHECK-LABEL: test
define void @test(i32* %A, i64 %AStride,
i32* %B, i32 %BStride,
i32* %C, i64 %CStride, i32 %N) {
entry:
%cmp13 = icmp eq i32 %N, 0
br i1 %cmp13, label %for.end, label %for.body.preheader
; CHECK-DAG: icmp ne i64 %AStride, 1
; CHECK-DAG: icmp ne i32 %BStride, 1
; CHECK-DAG: icmp ne i64 %CStride, 1
; CHECK: or
; CHECK: or
; CHECK: br
; CHECK: vector.body
; CHECK: load <2 x i32>
for.body.preheader:
br label %for.body
for.body:
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %for.body.preheader ]
%iv.trunc = trunc i64 %indvars.iv to i32
%mul = mul i32 %iv.trunc, %BStride
%mul64 = zext i32 %mul to i64
%arrayidx = getelementptr inbounds i32, i32* %B, i64 %mul64
%0 = load i32, i32* %arrayidx, align 4
%mul2 = mul nsw i64 %indvars.iv, %CStride
%arrayidx3 = getelementptr inbounds i32, i32* %C, i64 %mul2
%1 = load i32, i32* %arrayidx3, align 4
%mul4 = mul nsw i32 %1, %0
%mul3 = mul nsw i64 %indvars.iv, %AStride
%arrayidx7 = getelementptr inbounds i32, i32* %A, i64 %mul3
store i32 %mul4, i32* %arrayidx7, align 4
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, %N
br i1 %exitcond, label %for.end.loopexit, label %for.body
for.end.loopexit:
br label %for.end
for.end:
ret void
}
; We used to crash on this function because we removed the fptosi cast when
; replacing the symbolic stride '%conv'.
; PR18480
; CHECK-LABEL: fn1
; CHECK: load <2 x double>
define void @fn1(double* noalias %x, double* noalias %c, double %a) {
entry:
%conv = fptosi double %a to i32
%conv2 = add i32 %conv, 4
%cmp8 = icmp sgt i32 %conv2, 0
br i1 %cmp8, label %for.body.preheader, label %for.end
for.body.preheader:
br label %for.body
for.body:
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %for.body.preheader ]
%0 = trunc i64 %indvars.iv to i32
%mul = mul nsw i32 %0, %conv
%idxprom = sext i32 %mul to i64
%arrayidx = getelementptr inbounds double, double* %x, i64 %idxprom
%1 = load double, double* %arrayidx, align 8
%arrayidx3 = getelementptr inbounds double, double* %c, i64 %indvars.iv
store double %1, double* %arrayidx3, align 8
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, %conv2
br i1 %exitcond, label %for.end.loopexit, label %for.body
for.end.loopexit:
br label %for.end
for.end:
ret void
}
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