forked from OSchip/llvm-project
53 lines
1.9 KiB
LLVM
53 lines
1.9 KiB
LLVM
; RUN: opt < %s -basicaa -loop-interchange -pass-remarks-missed='loop-interchange' -pass-remarks-output=%t -S \
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; RUN: -verify-dom-info -verify-loop-info -verify-loop-lcssa 2>&1 | FileCheck -check-prefix=IR %s
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; RUN: FileCheck --input-file=%t %s
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; Outer loop only reductions are not supported currently.
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@A = common global [500 x [500 x i32]] zeroinitializer
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;; global X
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;; for( int i=1;i<N;i++) {
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;; for( int j=1;j<N;j++)
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;; ;
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;; X+=A[j][i];
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;; }
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; CHECK: --- !Missed
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; CHECK-NEXT: Pass: loop-interchange
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; CHECK-NEXT: Name: UnsupportedPHI
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; CHECK-NEXT: Function: reduction_01
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; IR-LABEL: @reduction_01(
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; IR-NOT: split
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define i32 @reduction_01(i32 %N) {
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entry:
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br label %outer.header
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outer.header: ; preds = %for.cond1.for.inc6_crit_edge, %entry
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%indvars.iv18 = phi i64 [ %indvars.iv.next19, %outer.inc ], [ 1, %entry ]
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%add15 = phi i32 [ 0, %entry ], [ %add, %outer.inc ]
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br label %for.body3
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for.body3: ; preds = %for.body3, %for.body3.lr.ph
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%indvars.iv = phi i64 [ 1, %outer.header ], [ %indvars.iv.next, %for.body3 ]
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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 %outer.inc, label %for.body3
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outer.inc: ; preds = %for.body3
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%arrayidx5 = getelementptr inbounds [500 x [500 x i32]], [500 x [500 x i32]]* @A, i64 0, i64 %indvars.iv, i64 %indvars.iv18
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%0 = load i32, i32* %arrayidx5
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%add = add nsw i32 %add15, %0
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%indvars.iv.next19 = add nuw nsw i64 %indvars.iv18, 1
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%lftr.wideiv20 = trunc i64 %indvars.iv.next19 to i32
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%exitcond21 = icmp eq i32 %lftr.wideiv20, %N
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br i1 %exitcond21, label %for.end8, label %outer.header
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for.end8: ; preds = %for.cond1.for.inc6_crit_edge, %entry
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ret i32 %add
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}
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