1536e299e6
Unlike every other analysis and transform, simplifyInstruction permitted operating on instructions which are not inserted into a function. This created an edge case no other code needs to really worry about, and limited transforms in cases that can make use of the context function. Only the inliner and a handful of other utilities were making use of this, so just fix up these edge cases. Results in some IR ordering differences since cloned blocks are inserted eagerly now. Plus some additional simplifications trigger (e.g. some add 0s now folded out that previously didn't).
234 lines
15 KiB
LLVM
234 lines
15 KiB
LLVM
; REQUIRES: asserts
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; Test for CSSPGO's SampleContextTracker to make sure context profile tree is promoted and merged properly
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; based on inline decision, so post inline counts are accurate.
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;; The order of nodes within Context Profile Tree depends on the implmementation of std::hash<std::string>.
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;; Using check-dag instead of check-next.
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; Note that we need new pass manager to enable top-down processing for sample profile loader
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; RUN: opt < %s -passes=sample-profile -sample-profile-file=%S/Inputs/profile-context-tracker.prof -sample-profile-inline-size -sample-profile-cold-inline-threshold=200 -debug-only=sample-context-tracker -o /dev/null 2>&1 | FileCheck %s --check-prefix=INLINE-ALL
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; RUN: opt < %s -passes=sample-profile -sample-profile-file=%S/Inputs/profile-context-tracker.prof -sample-profile-prioritized-inline=0 -sample-profile-inline-size=0 -debug-only=sample-context-tracker -o /dev/null 2>&1 | FileCheck %s --check-prefix=INLINE-HOT
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; Test we inlined the following in top-down order and promot rest not inlined context profile into base profile
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; main:3 @ _Z5funcAi
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; main:3 @ _Z5funcAi:1 @ _Z8funcLeafi
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; _Z5funcBi:1 @ _Z8funcLeafi
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; INLINE-ALL: Getting base profile for function: main
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; INLINE-ALL-NEXT: Merging context profile into base profile: main
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; INLINE-ALL-NEXT: Found context tree root to promote: external:12 @ main
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; INLINE-ALL-NEXT: Context promoted and merged to: main
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; INLINE-ALL-NEXT: Getting callee context for instr: %call = tail call i32 @_Z5funcBi
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; INLINE-ALL-NEXT: Callee context found: main:3.1 @ _Z5funcBi
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; INLINE-ALL-NEXT: Getting callee context for instr: %call1 = tail call i32 @_Z5funcAi
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; INLINE-ALL-NEXT: Callee context found: main:3 @ _Z5funcAi
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; INLINE-ALL-NEXT: Marking context profile as inlined: main:3 @ _Z5funcAi
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; INLINE-ALL-NEXT: Getting callee context for instr: %call.i = tail call i32 @_Z8funcLeafi
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; INLINE-ALL-NEXT: Callee context found: main:3 @ _Z5funcAi:1 @ _Z8funcLeafi
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; INLINE-ALL-NEXT: Marking context profile as inlined: main:3 @ _Z5funcAi:1 @ _Z8funcLeafi
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; INLINE-ALL-NEXT: Getting callee context for instr: %call.i2 = tail call i32 @_Z3fibi
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; INLINE-ALL-NEXT: Getting callee context for instr: %call5.i = tail call i32 @_Z3fibi
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; INLINE-ALL-DAG: Getting base profile for function: _Z5funcAi
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; INLINE-ALL-DAG-NEXT: Merging context profile into base profile: _Z5funcAi
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; INLINE-ALL-DAG: Getting base profile for function: _Z5funcBi
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; INLINE-ALL-DAG-NEXT: Merging context profile into base profile: _Z5funcBi
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; INLINE-ALL-DAG-NEXT: Found context tree root to promote: external:10 @ _Z5funcBi
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; INLINE-ALL-DAG-NEXT: Context promoted to: _Z5funcBi
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; INLINE-ALL-DAG-NEXT: Found context tree root to promote: externalA:17 @ _Z5funcBi
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; INLINE-ALL-DAG-NEXT: Context promoted and merged to: _Z5funcBi
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; INLINE-ALL-DAG-NEXT: Found context tree root to promote: main:3.1 @ _Z5funcBi
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; INLINE-ALL-DAG-NEXT: Context promoted and merged to: _Z5funcBi
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; INLINE-ALL-DAG-NEXT: Context promoted to: _Z5funcBi:1 @ _Z8funcLeafi
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; INLINE-ALL-DAG-NEXT: Getting callee context for instr: %call = tail call i32 @_Z8funcLeafi
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; INLINE-ALL-DAG-NEXT: Callee context found: _Z5funcBi:1 @ _Z8funcLeafi
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; INLINE-ALL-DAG-NEXT: Marking context profile as inlined: _Z5funcBi:1 @ _Z8funcLeafi
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; INLINE-ALL-DAG-NEXT: Getting callee context for instr: %call.i = tail call i32 @_Z3fibi
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; INLINE-ALL-DAG-NEXT: Getting callee context for instr: %call5.i = tail call i32 @_Z3fibi
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; INLINE-ALL: Getting base profile for function: _Z8funcLeafi
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; INLINE-ALL-NEXT: Merging context profile into base profile: _Z8funcLeafi
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; Test we inlined the following in top-down order and promot rest not inlined context profile into base profile
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; _Z5funcAi:1 @ _Z8funcLeafi
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; _Z5funcBi:1 @ _Z8funcLeafi
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; INLINE-HOT: Getting base profile for function: main
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; INLINE-HOT-NEXT: Merging context profile into base profile: main
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; INLINE-HOT-NEXT: Found context tree root to promote: external:12 @ main
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; INLINE-HOT-NEXT: Context promoted and merged to: main
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; INLINE-HOT-NEXT: Getting callee context for instr: %call = tail call i32 @_Z5funcBi
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; INLINE-HOT-NEXT: Callee context found: main:3.1 @ _Z5funcBi
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; INLINE-HOT-NEXT: Getting callee context for instr: %call1 = tail call i32 @_Z5funcAi
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; INLINE-HOT-NEXT: Callee context found: main:3 @ _Z5funcAi
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; INLINE-HOT-DAG: Getting base profile for function: _Z5funcAi
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; INLINE-HOT-DAG-NEXT: Merging context profile into base profile: _Z5funcAi
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; INLINE-HOT-DAG-NEXT: Found context tree root to promote: main:3 @ _Z5funcAi
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; INLINE-HOT-DAG-NEXT: Context promoted to: _Z5funcAi
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; INLINE-HOT-DAG-NEXT: Context promoted to: _Z5funcAi:1 @ _Z8funcLeafi
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; INLINE-HOT-DAG-NEXT: Getting callee context for instr: %call = tail call i32 @_Z8funcLeafi(i32 %add), !dbg !50
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; INLINE-HOT-DAG-NEXT: Callee context found: _Z5funcAi:1 @ _Z8funcLeafi
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; INLINE-HOT-DAG-NEXT: Marking context profile as inlined: _Z5funcAi:1 @ _Z8funcLeafi
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; INLINE-HOT-DAG-NEXT: Getting callee context for instr: %call.i = tail call i32 @_Z3fibi(i32 %tmp.i) #2, !dbg !62
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; INLINE-HOT-DAG-NEXT: Getting callee context for instr: %call5.i = tail call i32 @_Z3fibi(i32 %tmp1.i) #2, !dbg !69
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; INLINE-HOT-DAG: Getting base profile for function: _Z5funcBi
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; INLINE-HOT-DAG-NEXT: Merging context profile into base profile: _Z5funcBi
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; INLINE-HOT-DAG-NEXT: Found context tree root to promote: external:10 @ _Z5funcBi
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; INLINE-HOT-DAG-NEXT: Context promoted to: _Z5funcBi
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; INLINE-HOT-DAG-NEXT: Found context tree root to promote: externalA:17 @ _Z5funcBi
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; INLINE-HOT-DAG-NEXT: Context promoted and merged to: _Z5funcBi
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; INLINE-HOT-DAG-NEXT: Found context tree root to promote: main:3.1 @ _Z5funcBi
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; INLINE-HOT-DAG-NEXT: Context promoted and merged to: _Z5funcBi
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; INLINE-HOT-DAG-NEXT: Context promoted to: _Z5funcBi:1 @ _Z8funcLeafi
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; INLINE-HOT-DAG-NEXT: Getting callee context for instr: %call = tail call i32 @_Z8funcLeafi
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; INLINE-HOT-DAG-NEXT: Callee context found: _Z5funcBi:1 @ _Z8funcLeafi
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; INLINE-HOT-DAG-NEXT: Marking context profile as inlined: _Z5funcBi:1 @ _Z8funcLeafi
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; INLINE-HOT-DAG-NEXT: Getting callee context for instr: %call.i = tail call i32 @_Z3fibi
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; INLINE-HOT-DAG-NEXT: Getting callee context for instr: %call5.i = tail call i32 @_Z3fibi
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; INLINE-HOT: Getting base profile for function: _Z8funcLeafi
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; INLINE-HOT-NEXT: Merging context profile into base profile: _Z8funcLeafi
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@factor = dso_local global i32 3, align 4, !dbg !0
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define dso_local i32 @main() local_unnamed_addr #0 !dbg !18 {
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entry:
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br label %for.body, !dbg !25
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for.cond.cleanup: ; preds = %for.body
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ret i32 %add3, !dbg !27
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for.body: ; preds = %for.body, %entry
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%x.011 = phi i32 [ 300000, %entry ], [ %dec, %for.body ]
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%r.010 = phi i32 [ 0, %entry ], [ %add3, %for.body ]
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%call = tail call i32 @_Z5funcBi(i32 %x.011), !dbg !32
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%add = add nuw nsw i32 %x.011, 1, !dbg !31
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%call1 = tail call i32 @_Z5funcAi(i32 %add), !dbg !28
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%add2 = add i32 %call, %r.010, !dbg !34
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%add3 = add i32 %add2, %call1, !dbg !35
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%dec = add nsw i32 %x.011, -1, !dbg !36
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%cmp = icmp eq i32 %x.011, 0, !dbg !38
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br i1 %cmp, label %for.cond.cleanup, label %for.body, !dbg !25
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}
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define dso_local i32 @_Z5funcAi(i32 %x) local_unnamed_addr #1 !dbg !40 {
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entry:
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%add = add nsw i32 %x, 100000, !dbg !44
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%call = tail call i32 @_Z8funcLeafi(i32 %add), !dbg !45
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ret i32 %call, !dbg !46
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}
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define dso_local i32 @_Z8funcLeafi(i32 %x) local_unnamed_addr #1 !dbg !54 {
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entry:
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%cmp = icmp sgt i32 %x, 0, !dbg !57
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br i1 %cmp, label %while.body, label %while.cond2.preheader, !dbg !59
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while.cond2.preheader: ; preds = %entry
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%cmp313 = icmp slt i32 %x, 0, !dbg !60
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br i1 %cmp313, label %while.body4, label %if.end, !dbg !63
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while.body: ; preds = %while.body, %entry
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%x.addr.016 = phi i32 [ %sub, %while.body ], [ %x, %entry ]
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%tmp = load volatile i32, ptr @factor, align 4, !dbg !64
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%call = tail call i32 @_Z3fibi(i32 %tmp), !dbg !67
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%sub = sub nsw i32 %x.addr.016, %call, !dbg !68
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%cmp1 = icmp sgt i32 %sub, 0, !dbg !69
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br i1 %cmp1, label %while.body, label %if.end, !dbg !71
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while.body4: ; preds = %while.body4, %while.cond2.preheader
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%x.addr.114 = phi i32 [ %add, %while.body4 ], [ %x, %while.cond2.preheader ]
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%tmp1 = load volatile i32, ptr @factor, align 4, !dbg !72
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%call5 = tail call i32 @_Z3fibi(i32 %tmp1), !dbg !74
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%add = add nsw i32 %call5, %x.addr.114, !dbg !75
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%cmp3 = icmp slt i32 %add, 0, !dbg !60
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br i1 %cmp3, label %while.body4, label %if.end, !dbg !63
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if.end: ; preds = %while.body4, %while.body, %while.cond2.preheader
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%x.addr.2 = phi i32 [ 0, %while.cond2.preheader ], [ %sub, %while.body ], [ %add, %while.body4 ]
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ret i32 %x.addr.2, !dbg !76
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}
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define dso_local i32 @_Z5funcBi(i32 %x) local_unnamed_addr #0 !dbg !47 {
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entry:
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%sub = add nsw i32 %x, -100000, !dbg !51
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%call = tail call i32 @_Z8funcLeafi(i32 %sub), !dbg !52
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ret i32 %call, !dbg !53
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}
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declare i32 @_Z3fibi(i32)
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attributes #0 = { nofree noinline norecurse nounwind uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="none" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" "use-sample-profile" }
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attributes #1 = { nofree norecurse nounwind uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="none" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" "use-sample-profile" }
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!llvm.dbg.cu = !{!2}
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!llvm.module.flags = !{!14, !15, !16}
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!llvm.ident = !{!17}
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!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
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!1 = distinct !DIGlobalVariable(name: "factor", scope: !2, file: !3, line: 21, type: !13, isLocal: false, isDefinition: true)
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!2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !3, producer: "clang version 11.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, retainedTypes: !5, globals: !12, splitDebugInlining: false, debugInfoForProfiling: true, nameTableKind: None)
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!3 = !DIFile(filename: "merged.cpp", directory: "/local/autofdo")
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!4 = !{}
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!5 = !{!6, !10, !11}
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!6 = !DISubprogram(name: "funcA", linkageName: "_Z5funcAi", scope: !3, file: !3, line: 6, type: !7, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !4)
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!7 = !DISubroutineType(types: !8)
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!8 = !{!9, !9}
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!9 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!10 = !DISubprogram(name: "funcB", linkageName: "_Z5funcBi", scope: !3, file: !3, line: 7, type: !7, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !4)
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!11 = !DISubprogram(name: "funcLeaf", linkageName: "_Z8funcLeafi", scope: !3, file: !3, line: 22, type: !7, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !4)
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!12 = !{!0}
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!13 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !9)
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!14 = !{i32 7, !"Dwarf Version", i32 4}
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!15 = !{i32 2, !"Debug Info Version", i32 3}
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!16 = !{i32 1, !"wchar_size", i32 4}
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!17 = !{!"clang version 11.0.0"}
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!18 = distinct !DISubprogram(name: "main", scope: !3, file: !3, line: 11, type: !19, scopeLine: 11, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !21)
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!19 = !DISubroutineType(types: !20)
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!20 = !{!9}
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!21 = !{!22, !23}
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!22 = !DILocalVariable(name: "r", scope: !18, file: !3, line: 12, type: !9)
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!23 = !DILocalVariable(name: "x", scope: !24, file: !3, line: 13, type: !9)
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!24 = distinct !DILexicalBlock(scope: !18, file: !3, line: 13, column: 3)
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!25 = !DILocation(line: 13, column: 3, scope: !26)
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!26 = !DILexicalBlockFile(scope: !24, file: !3, discriminator: 2)
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!27 = !DILocation(line: 17, column: 3, scope: !18)
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!28 = !DILocation(line: 14, column: 10, scope: !29)
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!29 = distinct !DILexicalBlock(scope: !30, file: !3, line: 13, column: 37)
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!30 = distinct !DILexicalBlock(scope: !24, file: !3, line: 13, column: 3)
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!31 = !DILocation(line: 14, column: 29, scope: !29)
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!32 = !DILocation(line: 14, column: 21, scope: !33)
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!33 = !DILexicalBlockFile(scope: !29, file: !3, discriminator: 2)
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!34 = !DILocation(line: 14, column: 19, scope: !29)
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!35 = !DILocation(line: 14, column: 7, scope: !29)
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!36 = !DILocation(line: 13, column: 33, scope: !37)
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!37 = !DILexicalBlockFile(scope: !30, file: !3, discriminator: 6)
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!38 = !DILocation(line: 13, column: 26, scope: !39)
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!39 = !DILexicalBlockFile(scope: !30, file: !3, discriminator: 2)
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!40 = distinct !DISubprogram(name: "funcA", linkageName: "_Z5funcAi", scope: !3, file: !3, line: 26, type: !7, scopeLine: 26, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2)
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!44 = !DILocation(line: 27, column: 22, scope: !40)
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!45 = !DILocation(line: 27, column: 11, scope: !40)
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!46 = !DILocation(line: 29, column: 3, scope: !40)
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!47 = distinct !DISubprogram(name: "funcB", linkageName: "_Z5funcBi", scope: !3, file: !3, line: 32, type: !7, scopeLine: 32, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2)
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!51 = !DILocation(line: 33, column: 22, scope: !47)
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!52 = !DILocation(line: 33, column: 11, scope: !47)
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!53 = !DILocation(line: 35, column: 3, scope: !47)
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!54 = distinct !DISubprogram(name: "funcLeaf", linkageName: "_Z8funcLeafi", scope: !3, file: !3, line: 48, type: !7, scopeLine: 48, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2)
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!57 = !DILocation(line: 49, column: 9, scope: !58)
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!58 = distinct !DILexicalBlock(scope: !54, file: !3, line: 49, column: 7)
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!59 = !DILocation(line: 49, column: 7, scope: !54)
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!60 = !DILocation(line: 58, column: 14, scope: !61)
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!61 = !DILexicalBlockFile(scope: !62, file: !3, discriminator: 2)
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!62 = distinct !DILexicalBlock(scope: !58, file: !3, line: 56, column: 8)
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!63 = !DILocation(line: 58, column: 5, scope: !61)
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!64 = !DILocation(line: 52, column: 16, scope: !65)
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!65 = distinct !DILexicalBlock(scope: !66, file: !3, line: 51, column: 19)
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!66 = distinct !DILexicalBlock(scope: !58, file: !3, line: 49, column: 14)
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!67 = !DILocation(line: 52, column: 12, scope: !65)
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!68 = !DILocation(line: 52, column: 9, scope: !65)
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!69 = !DILocation(line: 51, column: 14, scope: !70)
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!70 = !DILexicalBlockFile(scope: !66, file: !3, discriminator: 2)
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!71 = !DILocation(line: 51, column: 5, scope: !70)
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!72 = !DILocation(line: 59, column: 16, scope: !73)
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!73 = distinct !DILexicalBlock(scope: !62, file: !3, line: 58, column: 19)
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!74 = !DILocation(line: 59, column: 12, scope: !73)
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!75 = !DILocation(line: 59, column: 9, scope: !73)
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!76 = !DILocation(line: 63, column: 3, scope: !54)
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