106 lines
3.2 KiB
LLVM
106 lines
3.2 KiB
LLVM
; REQUIRES: asserts
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; RUN: opt < %s -basicaa -loop-interchange -verify-dom-info -verify-loop-info \
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; RUN: -S -debug 2>&1 | FileCheck %s
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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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@B = common global [100 x i32] zeroinitializer
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@C = common global [100 x [100 x i32]] zeroinitializer
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@D = common global [100 x [100 x [100 x i32]]] zeroinitializer
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;; Loops not tightly nested are not interchanged
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;; for(int j=0;j<N;j++) {
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;; B[j] = j+k;
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;; for(int i=0;i<N;i++)
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;; A[j][i] = A[j][i]+B[j];
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;; }
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; CHECK: Not interchanging loops. Cannot prove legality.
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define void @interchange_05(i32 %k, i32 %N){
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entry:
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%cmp30 = icmp sgt i32 %N, 0
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br i1 %cmp30, label %for.body.lr.ph, label %for.end17
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for.body.lr.ph:
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%0 = add i32 %N, -1
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%1 = zext i32 %k to i64
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br label %for.body
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for.body:
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%indvars.iv32 = phi i64 [ 0, %for.body.lr.ph ], [ %indvars.iv.next33, %for.inc15 ]
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%2 = add nsw i64 %indvars.iv32, %1
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%arrayidx = getelementptr inbounds [100 x i32], [100 x i32]* @B, i64 0, i64 %indvars.iv32
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%3 = trunc i64 %2 to i32
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store i32 %3, i32* %arrayidx
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br label %for.body3
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for.body3:
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%indvars.iv = phi i64 [ 0, %for.body ], [ %indvars.iv.next, %for.body3 ]
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%arrayidx7 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @A, i64 0, i64 %indvars.iv32, i64 %indvars.iv
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%4 = load i32, i32* %arrayidx7
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%add10 = add nsw i32 %3, %4
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store i32 %add10, i32* %arrayidx7
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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.inc15, label %for.body3
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for.inc15:
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%indvars.iv.next33 = add nuw nsw i64 %indvars.iv32, 1
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%lftr.wideiv35 = trunc i64 %indvars.iv32 to i32
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%exitcond36 = icmp eq i32 %lftr.wideiv35, %0
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br i1 %exitcond36, label %for.end17, label %for.body
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for.end17:
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ret void
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}
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declare void @foo(...) readnone
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;; Loops not tightly nested are not interchanged
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;; for(int j=0;j<N;j++) {
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;; foo();
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;; for(int i=2;i<N;i++)
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;; A[j][i] = A[j][i]+k;
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;; }
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; CHECK: Not interchanging loops. Cannot prove legality.
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define void @interchange_06(i32 %k, i32 %N) {
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entry:
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%cmp22 = icmp sgt i32 %N, 0
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br i1 %cmp22, label %for.body.lr.ph, label %for.end12
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for.body.lr.ph:
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%0 = add i32 %N, -1
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br label %for.body
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for.body:
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%indvars.iv24 = phi i64 [ 0, %for.body.lr.ph ], [ %indvars.iv.next25, %for.inc10 ]
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tail call void (...) @foo()
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br label %for.body3
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for.body3:
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%indvars.iv = phi i64 [ %indvars.iv.next, %for.body3 ], [ 2, %for.body ]
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%arrayidx5 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @A, i64 0, i64 %indvars.iv24, i64 %indvars.iv
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%1 = load i32, i32* %arrayidx5
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%add = add nsw i32 %1, %k
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store i32 %add, i32* %arrayidx5
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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.inc10, label %for.body3
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for.inc10:
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%indvars.iv.next25 = add nuw nsw i64 %indvars.iv24, 1
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%lftr.wideiv26 = trunc i64 %indvars.iv24 to i32
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%exitcond27 = icmp eq i32 %lftr.wideiv26, %0
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br i1 %exitcond27, label %for.end12, label %for.body
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for.end12:
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ret void
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}
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