6699029b67
We tend to assume that the AA pipeline is by default the default AA pipeline and it's confusing when it's empty instead. PR48779 Initially reverted due to BasicAA running analyses in an unspecified order (multiple function calls as parameters), fixed by fetching analyses before the call to construct BasicAA. Reviewed By: asbirlea Differential Revision: https://reviews.llvm.org/D95117
69 lines
3.2 KiB
LLVM
69 lines
3.2 KiB
LLVM
; RUN: opt < %s -O1 -S -loop-versioning-licm -licm -debug-only=loop-versioning-licm -enable-new-pm=0 2>&1 | FileCheck %s
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; RUN: opt < %s -S -passes='default<O1>,loop-versioning-licm,licm' -debug-only=loop-versioning-licm 2>&1 | FileCheck %s
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; REQUIRES: asserts
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;
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; Test to confirm loop is a candidate for LoopVersioningLICM.
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; It also confirms invariant moved out of loop.
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;
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; CHECK: Loop: Loop at depth 2 containing: %for.body3<header><latch><exiting>
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; CHECK-NEXT: Loop Versioning found to be beneficial
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;
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; CHECK: for.body3:
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; CHECK-NEXT: %[[induction:.*]] = phi i32 [ %arrayidx7.promoted, %for.body3.ph ], [ %add8, %for.body3 ]
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; CHECK-NEXT: %j.113 = phi i32 [ %j.016, %for.body3.ph ], [ %inc, %for.body3 ]
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; CHECK-NEXT: %idxprom = zext i32 %j.113 to i64
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; CHECK-NEXT: %arrayidx = getelementptr inbounds i32, i32* %var1, i64 %idxprom
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; CHECK-NEXT: store i32 %add, i32* %arrayidx, align 4, !alias.scope !2, !noalias !2
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; CHECK-NEXT: %add8 = add nsw i32 %[[induction]], %add
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; CHECK-NEXT: %inc = add nuw i32 %j.113, 1
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; CHECK-NEXT: %cmp2 = icmp ult i32 %inc, %itr
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; CHECK-NEXT: br i1 %cmp2, label %for.body3, label %for.inc11.loopexit.loopexit7, !llvm.loop !5
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define i32 @foo(i32* nocapture %var1, i32* nocapture readnone %var2, i32* nocapture %var3, i32 %itr) #0 {
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entry:
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%cmp14 = icmp eq i32 %itr, 0
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br i1 %cmp14, label %for.end13, label %for.cond1.preheader.preheader
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for.cond1.preheader.preheader: ; preds = %entry
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br label %for.cond1.preheader
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for.cond1.preheader: ; preds = %for.cond1.preheader.preheader, %for.inc11
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%j.016 = phi i32 [ %j.1.lcssa, %for.inc11 ], [ 0, %for.cond1.preheader.preheader ]
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%i.015 = phi i32 [ %inc12, %for.inc11 ], [ 0, %for.cond1.preheader.preheader ]
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%cmp212 = icmp ult i32 %j.016, %itr
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br i1 %cmp212, label %for.body3.lr.ph, label %for.inc11
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for.body3.lr.ph: ; preds = %for.cond1.preheader
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%add = add i32 %i.015, %itr
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%idxprom6 = zext i32 %i.015 to i64
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%arrayidx7 = getelementptr inbounds i32, i32* %var3, i64 %idxprom6
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br label %for.body3
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for.body3: ; preds = %for.body3.lr.ph, %for.body3
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%j.113 = phi i32 [ %j.016, %for.body3.lr.ph ], [ %inc, %for.body3 ]
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%idxprom = zext i32 %j.113 to i64
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%arrayidx = getelementptr inbounds i32, i32* %var1, i64 %idxprom
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store i32 %add, i32* %arrayidx, align 4
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%0 = load i32, i32* %arrayidx7, align 4
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%add8 = add nsw i32 %0, %add
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store i32 %add8, i32* %arrayidx7, align 4
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%inc = add nuw i32 %j.113, 1
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%cmp2 = icmp ult i32 %inc, %itr
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br i1 %cmp2, label %for.body3, label %for.inc11.loopexit
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for.inc11.loopexit: ; preds = %for.body3
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br label %for.inc11
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for.inc11: ; preds = %for.inc11.loopexit, %for.cond1.preheader
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%j.1.lcssa = phi i32 [ %j.016, %for.cond1.preheader ], [ %itr, %for.inc11.loopexit ]
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%inc12 = add nuw i32 %i.015, 1
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%cmp = icmp ult i32 %inc12, %itr
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br i1 %cmp, label %for.cond1.preheader, label %for.end13.loopexit
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for.end13.loopexit: ; preds = %for.inc11
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br label %for.end13
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for.end13: ; preds = %for.end13.loopexit, %entry
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ret i32 0
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}
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