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