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0307223760
Summary: The delinearization algorithm did not consider terms which had an extension without a multiply factor, i.e. a identify factor. We lose cases where size is char type where there will no multiply factor. Reviewers: sanjoy, grosser Subscribers: mzolotukhin, Eugene.Zelenko, llvm-commits, mssimpso, sanjoy, grosser Differential Revision: https://reviews.llvm.org/D16492 llvm-svn: 284378
65 lines
2.5 KiB
LLVM
65 lines
2.5 KiB
LLVM
; REQUIRES: asserts
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; RUN: opt < %s -analyze -delinearize -debug 2>&1 | FileCheck %s
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; void foo (int m, int n, char *A) {
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; for (int i=0; i < m; i++)
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; for(int j=0; j< n; j++)
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; A[i*n+j] += 1;
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;}
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; ModuleID = 'delin.cpp'
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;target datalayout = "e-m:e-i64:64-i128:128-n32:64-S128"
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;target triple = "aarch64--linux-gnu"
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; CHECK-LABEL: Delinearization on function foo
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; CHECK: Inst: %4 = load i8, i8* %arrayidx.us, align 1
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; CHECK: Subscripts
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; CHECK-NEXT: {0,+,1}<nuw><nsw><%for.body3.lr.ph.us>
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; CHECK-NEXT: {0,+,1}<nuw><nsw><%for.body3.us>
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; CHECK: succeeded to delinearize
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define void @foo(i32 %m, i32 %n, i8* nocapture %A) #0 {
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entry:
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br label %entry.split
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entry.split: ; preds = %entry
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%cmp15 = icmp sgt i32 %m, 0
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%cmp213 = icmp sgt i32 %n, 0
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%or.cond = and i1 %cmp15, %cmp213
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br i1 %or.cond, label %for.cond1.preheader.lr.ph.split.us, label %for.end8
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for.cond1.preheader.lr.ph.split.us: ; preds = %entry.split
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%0 = add i32 %n, -1
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%1 = sext i32 %n to i64
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%2 = add i32 %m, -1
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br label %for.body3.lr.ph.us
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for.body3.us: ; preds = %for.body3.us, %for.body3.lr.ph.us
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%indvars.iv = phi i64 [ 0, %for.body3.lr.ph.us ], [ %indvars.iv.next, %for.body3.us ]
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%3 = add nsw i64 %indvars.iv, %5
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%arrayidx.us = getelementptr inbounds i8, i8* %A, i64 %3
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%4 = load i8, i8* %arrayidx.us, align 1
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%add4.us = add i8 %4, 1
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store i8 %add4.us, i8* %arrayidx.us, align 1
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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.cond1.for.inc6_crit_edge.us, label %for.body3.us
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for.body3.lr.ph.us: ; preds = %for.cond1.for.inc6_crit_edge.us, %for.cond1.preheader.lr.ph.split.us
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%indvars.iv19 = phi i64 [ %indvars.iv.next20, %for.cond1.for.inc6_crit_edge.us ], [ 0, %for.cond1.preheader.lr.ph.split.us ]
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%5 = mul nsw i64 %indvars.iv19, %1
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br label %for.body3.us
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for.cond1.for.inc6_crit_edge.us: ; preds = %for.body3.us
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%indvars.iv.next20 = add nuw nsw i64 %indvars.iv19, 1
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%lftr.wideiv22 = trunc i64 %indvars.iv19 to i32
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%exitcond23 = icmp eq i32 %lftr.wideiv22, %2
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br i1 %exitcond23, label %for.end8.loopexit, label %for.body3.lr.ph.us
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for.end8.loopexit: ; preds = %for.cond1.for.inc6_crit_edge.us
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br label %for.end8
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for.end8: ; preds = %for.end8.loopexit, %entry.split
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ret void
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}
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