77 lines
3.1 KiB
LLVM
77 lines
3.1 KiB
LLVM
; RUN: opt < %s -basicaa -loop-interchange -S | FileCheck %s
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;; We test the complete .ll for adjustment in outer loop header/latch and inner loop header/latch.
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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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@A = common global [100 x [100 x i32]] zeroinitializer
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@C = common global [100 x [100 x i32]] zeroinitializer
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;; FIXME:
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;; Test for interchange when we have an lcssa phi. This should ideally be interchanged but it is currently not supported.
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;; for(gi=1;gi<N;gi++)
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;; for(gj=1;gj<M;gj++)
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;; A[gj][gi] = A[gj - 1][gi] + C[gj][gi];
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@gi = common global i32 0
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@gj = common global i32 0
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define void @interchange_07(i32 %N, i32 %M){
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entry:
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store i32 1, i32* @gi
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%cmp21 = icmp sgt i32 %N, 1
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br i1 %cmp21, label %for.cond1.preheader.lr.ph, label %for.end16
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for.cond1.preheader.lr.ph:
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%cmp218 = icmp sgt i32 %M, 1
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%gi.promoted = load i32, i32* @gi
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%0 = add i32 %M, -1
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%1 = sext i32 %gi.promoted to i64
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%2 = sext i32 %N to i64
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%3 = add i32 %gi.promoted, 1
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%4 = icmp slt i32 %3, %N
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%smax = select i1 %4, i32 %N, i32 %3
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br label %for.cond1.preheader
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for.cond1.preheader:
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%indvars.iv25 = phi i64 [ %1, %for.cond1.preheader.lr.ph ], [ %indvars.iv.next26, %for.inc14 ]
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br i1 %cmp218, label %for.body3, label %for.inc14
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for.body3:
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%indvars.iv = phi i64 [ %indvars.iv.next, %for.body3 ], [ 1, %for.cond1.preheader ]
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%5 = add nsw i64 %indvars.iv, -1
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%arrayidx5 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @A, i64 0, i64 %5, i64 %indvars.iv25
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%6 = load i32, i32* %arrayidx5
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%arrayidx9 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @C, i64 0, i64 %indvars.iv, i64 %indvars.iv25
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%7 = load i32, i32* %arrayidx9
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%add = add nsw i32 %7, %6
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%arrayidx13 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @A, i64 0, i64 %indvars.iv, i64 %indvars.iv25
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store i32 %add, i32* %arrayidx13
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
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%lftr.wideiv = trunc i64 %indvars.iv to i32
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%exitcond = icmp eq i32 %lftr.wideiv, %0
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br i1 %exitcond, label %for.inc14, label %for.body3
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for.inc14:
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%inc.lcssa23 = phi i32 [ 1, %for.cond1.preheader ], [ %M, %for.body3 ]
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%indvars.iv.next26 = add nsw i64 %indvars.iv25, 1
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%cmp = icmp slt i64 %indvars.iv.next26, %2
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br i1 %cmp, label %for.cond1.preheader, label %for.cond.for.end16_crit_edge
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for.cond.for.end16_crit_edge:
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store i32 %inc.lcssa23, i32* @gj
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store i32 %smax, i32* @gi
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br label %for.end16
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for.end16:
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ret void
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}
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; CHECK-LABEL: @interchange_07
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; CHECK: for.body3: ; preds = %for.body3.preheader, %for.body3
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; CHECK: %indvars.iv = phi i64 [ %indvars.iv.next, %for.body3 ], [ 1, %for.body3.preheader ]
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; CHECK: %5 = add nsw i64 %indvars.iv, -1
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; CHECK: %arrayidx5 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @A, i64 0, i64 %5, i64 %indvars.iv25
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; CHECK: %6 = load i32, i32* %arrayidx5
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; CHECK: %arrayidx9 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @C, i64 0, i64 %indvars.iv, i64 %indvars.iv25
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