73 lines
2.7 KiB
LLVM
73 lines
2.7 KiB
LLVM
; MRE for SCC splitting causing MLInlineAdvisor to lose track of edges
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; foo and bar both call inlineme; inlineme calls only foo and bar
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; when the foo-bar-inlineme SCC reaches the inliner, foo-bar will be split out
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; leaving inlineme in the SCC. inlineme is dead, so it gets removed from the SCC
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; However, MLInlineAdvisor should still track the edges of foo and bar onPassExit
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; as the foo-bar SCC will be passed on to the next SCC pass in the pipeline
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; and as a result could gain/lose edges before the inliner sees it again
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; In this example if loop-unroll is ran after a mandatory inlining CGSCC pass,
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; edges would increase but wouldn't be tracked
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; REQUIRES: llvm_inliner_model_autogenerated
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; RUN: opt -enable-ml-inliner=release -passes=inliner-ml-advisor-release \
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; RUN: -keep-inline-advisor-for-printing \
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; RUN: -enable-scc-inline-advisor-printing -S < %s 2>&1 | FileCheck %s
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target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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define internal void @_Z8inlinemei() inlinehint alwaysinline {
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entry:
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%call2 = call noundef i32 @_Z3bari(i32 noundef 12321)
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%call3 = call noundef i32 @_Z3fooi(i32 noundef 12321)
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ret void
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}
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define dso_local noundef i32 @_Z3bari(i32 noundef %y) {
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entry:
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call void @_Z8inlinemei()
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ret i32 %y
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}
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define dso_local noundef i32 @main(i32 noundef %argc, ptr noundef %argv) {
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entry:
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%call = call noundef i32 @_Z3fooi(i32 noundef %argc)
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ret i32 %call
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}
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define dso_local noundef i32 @_Z3fooi(i32 noundef %z) {
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entry:
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%a = alloca i32, align 4
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br label %for.body
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for.body:
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%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
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%arrayidx = getelementptr inbounds i32, ptr %a, i64 %indvars.iv
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%0 = load i32, ptr %arrayidx, align 4
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%inc = add nsw i32 %0, 1
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store i32 %inc, ptr %arrayidx, align 4
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call void @_Z8inlinemei()
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
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%exitcond = icmp eq i64 %indvars.iv.next, 10
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br i1 %exitcond, label %for.end, label %for.body, !llvm.loop !5
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for.end:
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ret i32 %z
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}
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!llvm.module.flags = !{!0, !1, !2, !3, !4}
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!0 = !{i32 1, !"wchar_size", i32 4}
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!1 = !{i32 7, !"PIC Level", i32 2}
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!2 = !{i32 7, !"PIE Level", i32 2}
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!3 = !{i32 7, !"uwtable", i32 2}
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!4 = !{i32 7, !"frame-pointer", i32 2}
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!5 = !{!5, !{!"llvm.loop.disable_nonforced"}, !{!"llvm.loop.unroll.enable"}}
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; CHECK: [MLInlineAdvisor] Nodes: 3 Edges: 5 EdgesOfLastSeenNodes: 4
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; CHECK: [MLInlineAdvisor] Nodes: 3 Edges: 5 EdgesOfLastSeenNodes: 4
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; CHECK: [MLInlineAdvisor] Nodes: 3 Edges: 5 EdgesOfLastSeenNodes: 4
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; CHECK: [MLInlineAdvisor] Nodes: 3 Edges: 5 EdgesOfLastSeenNodes: 4
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; CHECK: [MLInlineAdvisor] Nodes: 3 Edges: 5 EdgesOfLastSeenNodes: 1
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