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cdf50f8461
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
54 lines
2.8 KiB
LLVM
54 lines
2.8 KiB
LLVM
; RUN: opt < %s -O1 -S -loop-versioning-licm -licm -debug-only=loop-versioning-licm -disable-loop-unrolling -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 -disable-loop-unrolling 2>&1 | FileCheck %s
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; REQUIRES: asserts
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;
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; Test to confirm loop is a good 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.us<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.cond1.for.inc17_crit_edge.us.loopexit6: ; preds = %for.body3.us
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; CHECK-NEXT: %add14.us.lcssa = phi float [ %add14.us, %for.body3.us ]
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; CHECK-NEXT: store float %add14.us.lcssa, float* %arrayidx.us, align 4, !alias.scope !0, !noalias !0
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; CHECK-NEXT: br label %for.cond1.for.inc17_crit_edge.us
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;
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define i32 @foo(float* nocapture %var2, float** nocapture readonly %var3, i32 %itr) #0 {
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entry:
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%cmp38 = icmp sgt i32 %itr, 1
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br i1 %cmp38, label %for.body3.lr.ph.us, label %for.end19
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for.body3.us: ; preds = %for.body3.us, %for.body3.lr.ph.us
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%0 = phi float [ %.pre, %for.body3.lr.ph.us ], [ %add14.us, %for.body3.us ]
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%indvars.iv = phi i64 [ 1, %for.body3.lr.ph.us ], [ %indvars.iv.next, %for.body3.us ]
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%1 = trunc i64 %indvars.iv to i32
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%conv.us = sitofp i32 %1 to float
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%add.us = fadd float %conv.us, %0
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%arrayidx7.us = getelementptr inbounds float, float* %3, i64 %indvars.iv
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store float %add.us, float* %arrayidx7.us, align 4
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%2 = load float, float* %arrayidx.us, align 4
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%add14.us = fadd float %2, %add.us
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store float %add14.us, float* %arrayidx.us, align 4
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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, %itr
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br i1 %exitcond, label %for.cond1.for.inc17_crit_edge.us, label %for.body3.us
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for.body3.lr.ph.us: ; preds = %entry, %for.cond1.for.inc17_crit_edge.us
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%indvars.iv40 = phi i64 [ %indvars.iv.next41, %for.cond1.for.inc17_crit_edge.us ], [ 1, %entry ]
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%arrayidx.us = getelementptr inbounds float, float* %var2, i64 %indvars.iv40
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%arrayidx6.us = getelementptr inbounds float*, float** %var3, i64 %indvars.iv40
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%3 = load float*, float** %arrayidx6.us, align 8
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%.pre = load float, float* %arrayidx.us, align 4
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br label %for.body3.us
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for.cond1.for.inc17_crit_edge.us: ; preds = %for.body3.us
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%indvars.iv.next41 = add nuw nsw i64 %indvars.iv40, 1
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%lftr.wideiv42 = trunc i64 %indvars.iv.next41 to i32
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%exitcond43 = icmp eq i32 %lftr.wideiv42, %itr
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br i1 %exitcond43, label %for.end19, label %for.body3.lr.ph.us
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for.end19: ; preds = %for.cond1.for.inc17_crit_edge.us, %entry
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ret i32 0
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}
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