diff options
Diffstat (limited to 'test/Analysis/LoopAccessAnalysis/store-to-invariant-check1.ll')
-rw-r--r-- | test/Analysis/LoopAccessAnalysis/store-to-invariant-check1.ll | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/test/Analysis/LoopAccessAnalysis/store-to-invariant-check1.ll b/test/Analysis/LoopAccessAnalysis/store-to-invariant-check1.ll new file mode 100644 index 0000000..8ab8ab2 --- /dev/null +++ b/test/Analysis/LoopAccessAnalysis/store-to-invariant-check1.ll @@ -0,0 +1,53 @@ +; RUN: opt < %s -loop-accesses -analyze | FileCheck %s + +; Test to confirm LAA will find store to invariant address. +; Inner loop has a store to invariant address. +; +; for(; i < itr; i++) { +; for(; j < itr; j++) { +; var1[i] = var2[j] + var1[i]; +; } +; } + +; CHECK: Store to invariant address was found in loop. +; CHECK-NOT: Store to invariant address was not found in loop. + +define i32 @foo(i32* nocapture %var1, i32* nocapture readonly %var2, i32 %itr) #0 { +entry: + %cmp20 = icmp eq i32 %itr, 0 + br i1 %cmp20, label %for.end10, label %for.cond1.preheader + +for.cond1.preheader: ; preds = %entry, %for.inc8 + %indvars.iv23 = phi i64 [ %indvars.iv.next24, %for.inc8 ], [ 0, %entry ] + %j.022 = phi i32 [ %j.1.lcssa, %for.inc8 ], [ 0, %entry ] + %cmp218 = icmp ult i32 %j.022, %itr + br i1 %cmp218, label %for.body3.lr.ph, label %for.inc8 + +for.body3.lr.ph: ; preds = %for.cond1.preheader + %arrayidx5 = getelementptr inbounds i32, i32* %var1, i64 %indvars.iv23 + %0 = zext i32 %j.022 to i64 + br label %for.body3 + +for.body3: ; preds = %for.body3, %for.body3.lr.ph + %indvars.iv = phi i64 [ %0, %for.body3.lr.ph ], [ %indvars.iv.next, %for.body3 ] + %arrayidx = getelementptr inbounds i32, i32* %var2, i64 %indvars.iv + %1 = load i32, i32* %arrayidx, align 4 + %2 = load i32, i32* %arrayidx5, align 4 + %add = add nsw i32 %2, %1 + store i32 %add, i32* %arrayidx5, align 4 + %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 + %lftr.wideiv = trunc i64 %indvars.iv.next to i32 + %exitcond = icmp eq i32 %lftr.wideiv, %itr + br i1 %exitcond, label %for.inc8, label %for.body3 + +for.inc8: ; preds = %for.body3, %for.cond1.preheader + %j.1.lcssa = phi i32 [ %j.022, %for.cond1.preheader ], [ %itr, %for.body3 ] + %indvars.iv.next24 = add nuw nsw i64 %indvars.iv23, 1 + %lftr.wideiv25 = trunc i64 %indvars.iv.next24 to i32 + %exitcond26 = icmp eq i32 %lftr.wideiv25, %itr + br i1 %exitcond26, label %for.end10, label %for.cond1.preheader + +for.end10: ; preds = %for.inc8, %entry + ret i32 undef +} + |