12c1156207
Refactored AlwaysInliner to remove some of inlined functions earlier. Before the change AlwaysInliner walked through all functions in the module and inlined them into calls where it is appropriate. Removing of the dead inlined functions was performed only after all of inlining. For the test case from the issue [59126](https://github.com/llvm/llvm-project/issues/59126) compiler consumes all of the memory on 64GB machine, so is killed. The change checks if just inlined function can be removed from the module and removes it.
164 lines
4.3 KiB
LLVM
164 lines
4.3 KiB
LLVM
; RUN: opt --Os -pass-remarks=inline -S < %s 2>&1 | FileCheck %s
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target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
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target triple = "arm64e-apple-macosx13"
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; CHECK: remark: <unknown>:0:0: 'wibble' inlined into 'bar.8' with (cost=always): always inline attribute
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; CHECK: remark: <unknown>:0:0: 'wibble' inlined into 'pluto' with (cost=always): always inline attribute
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; CHECK: remark: <unknown>:0:0: 'snork' inlined into 'blam' with (cost=always): always inline attribute
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; CHECK: remark: <unknown>:0:0: 'wobble' inlined into 'blam' with (cost=always): always inline attribute
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; CHECK: remark: <unknown>:0:0: 'spam' inlined into 'blam' with (cost=65, threshold=75)
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; CHECK: remark: <unknown>:0:0: 'wibble.1' inlined into 'widget' with (cost=30, threshold=75)
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; CHECK: remark: <unknown>:0:0: 'widget' inlined into 'bar.8' with (cost=30, threshold=75)
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; CHECK: remark: <unknown>:0:0: 'barney' inlined into 'wombat' with (cost=30, threshold=75)
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define linkonce_odr void @wombat(ptr %arg) #0 {
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bb:
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call void @barney()
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ret void
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}
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define i1 @foo() {
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bb:
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call void @wombat(ptr null)
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unreachable
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}
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define linkonce_odr void @pluto() #1 !prof !38 {
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bb:
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call void @wibble()
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ret void
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}
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; Function Attrs: alwaysinline
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define linkonce_odr void @wibble() #2 {
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bb:
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call void @widget()
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ret void
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}
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define linkonce_odr void @widget() {
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bb:
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call void @wibble.1()
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ret void
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}
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define linkonce_odr void @wibble.1() {
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bb:
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%0 = call i32 @foo.2()
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call void @blam()
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ret void
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}
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declare i32 @foo.2()
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define linkonce_odr void @blam() {
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bb:
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%tmp = call i32 @snork()
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%tmpv1 = call ptr @wombat.3()
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call void @eggs()
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%tmpv2 = call ptr @wombat.3()
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ret void
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}
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; Function Attrs: alwaysinline
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define linkonce_odr i32 @snork() #2 {
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bb:
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%tmpv1 = call i32 @spam()
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%tmpv2 = call i32 @wobble()
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call void @widget.4(i32 %tmpv2)
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ret i32 0
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}
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declare void @eggs()
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declare ptr @wombat.3()
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define linkonce_odr i32 @spam() {
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bb:
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%tmpv1 = call i32 @wombat.6()
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%tmpv2 = call i64 @wobble.5(i8 0)
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%tmpv3 = call i64 @bar()
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ret i32 0
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}
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; Function Attrs: alwaysinline
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define linkonce_odr i32 @wobble() #2 {
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bb:
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%tmpv = call i64 @wobble.5(i8 0)
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%tmpv1 = call i64 @eggs.7()
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%tmpv2 = call i64 @wobble.5(i8 0)
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%tmpv3 = call i64 @eggs.7()
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%tmpv4 = lshr i64 %tmpv1, 1
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%tmpv5 = trunc i64 %tmpv4 to i32
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%tmpv6 = xor i32 %tmpv5, 23
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ret i32 %tmpv6
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}
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declare void @widget.4(i32)
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declare i64 @bar()
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declare i64 @wobble.5(i8)
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declare i32 @wombat.6()
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declare i64 @eggs.7()
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define linkonce_odr void @barney() {
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bb:
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call void @bar.8()
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call void @pluto()
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unreachable
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}
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define linkonce_odr void @bar.8() {
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bb:
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call void @wibble()
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ret void
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}
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attributes #0 = { "frame-pointer"="non-leaf" }
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attributes #1 = { "target-cpu"="apple-m1" }
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attributes #2 = { alwaysinline }
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!llvm.module.flags = !{!0, !1, !30, !31, !32, !36, !37}
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!0 = !{i32 2, !"SDK Version", [2 x i32] [i32 13, i32 3]}
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!1 = !{i32 1, !"ProfileSummary", !2}
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!2 = !{!3, !4, !5, !6, !7, !8, !9, !10, !11, !12}
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!3 = !{!"ProfileFormat", !"InstrProf"}
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!4 = !{!"TotalCount", i64 864540306756}
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!5 = !{!"MaxCount", i64 6596759955}
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!6 = !{!"MaxInternalCount", i64 2828618424}
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!7 = !{!"MaxFunctionCount", i64 6596759955}
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!8 = !{!"NumCounts", i64 268920}
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!9 = !{!"NumFunctions", i64 106162}
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!10 = !{!"IsPartialProfile", i64 0}
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!11 = !{!"PartialProfileRatio", double 0.000000e+00}
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!12 = !{!"DetailedSummary", !13}
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!13 = !{!14, !15, !16, !17, !18, !19, !20, !21, !22, !23, !24, !25, !26, !27, !28, !29}
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!14 = !{i32 10000, i64 5109654023, i32 2}
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!15 = !{i32 100000, i64 2480859832, i32 25}
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!16 = !{i32 200000, i64 1566552109, i32 70}
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!17 = !{i32 300000, i64 973667919, i32 140}
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!18 = !{i32 400000, i64 552159773, i32 263}
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!19 = !{i32 500000, i64 353879860, i32 463}
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!20 = !{i32 600000, i64 187122455, i32 799}
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!21 = !{i32 700000, i64 105465980, i32 1419}
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!22 = !{i32 800000, i64 49243829, i32 2620}
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!23 = !{i32 900000, i64 15198227, i32 5898}
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!24 = !{i32 950000, i64 5545670, i32 10696}
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!25 = !{i32 990000, i64 804816, i32 25738}
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!26 = !{i32 999000, i64 73999, i32 53382}
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!27 = !{i32 999900, i64 6530, i32 83503}
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!28 = !{i32 999990, i64 899, i32 110416}
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!29 = !{i32 999999, i64 120, i32 130201}
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!30 = !{i32 7, !"Dwarf Version", i32 4}
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!31 = !{i32 2, !"Debug Info Version", i32 3}
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!32 = !{i32 1, !"wchar_size", i32 4}
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!34 = !{!35}
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!35 = !{i32 0, i1 false}
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!36 = !{i32 8, !"PIC Level", i32 2}
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!37 = !{i32 7, !"frame-pointer", i32 1}
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!38 = !{!"function_entry_count", i64 15128150}
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