f0d41b58da
This change slightly relaxed the current ICP threshold in top-down inliner, specifically always allow one ICP for it. It shows some perf improvements on SPEC and our internal benchmarks. Also renamed the previous flag. We can also try to turn off PGO ICP in the future. Reviewed By: wenlei, hoy, wmi Differential Revision: https://reviews.llvm.org/D106588
64 lines
2.7 KiB
LLVM
64 lines
2.7 KiB
LLVM
; RUN: opt < %s -sample-profile -sample-profile-file=%S/Inputs/indirect-call-csspgo.prof -sample-profile-icp-relative-hotness=1 -pass-remarks=sample-profile -S -o /dev/null 2>&1 | FileCheck -check-prefix=ICP-ALL %s
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; RUN: opt < %s -passes=sample-profile -sample-profile-file=%S/Inputs/indirect-call-csspgo.prof -sample-profile-icp-relative-hotness=1 -pass-remarks=sample-profile -S -o /dev/null 2>&1 | FileCheck -check-prefix=ICP-ALL %s
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; RUN: opt < %s -sample-profile -sample-profile-file=%S/Inputs/indirect-call-csspgo.prof -sample-profile-icp-relative-hotness=1 -pass-remarks=sample-profile -sample-profile-inline-size=0 -S -o /dev/null 2>&1 | FileCheck -check-prefix=ICP-HOT %s
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; RUN: opt < %s -passes=sample-profile -sample-profile-file=%S/Inputs/indirect-call-csspgo.prof -sample-profile-icp-relative-hotness=1 -pass-remarks=sample-profile -sample-profile-inline-size=0 -S -o /dev/null 2>&1 | FileCheck -check-prefix=ICP-HOT %s
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define void @test(void ()*) #0 !dbg !3 {
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;; Add two direct call to force top-down order for sample profile loader
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call void @_Z3foov(), !dbg !7
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call void @_Z3barv(), !dbg !7
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call void @_Z3bazv(), !dbg !7
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%2 = alloca void ()*
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store void ()* %0, void ()** %2
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%3 = load void ()*, void ()** %2
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call void %3(), !dbg !4
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%4 = alloca void ()*
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store void ()* %0, void ()** %4
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%5 = load void ()*, void ()** %4
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call void %5(), !dbg !5
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ret void
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}
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define void @_Z3foov() #0 !dbg !8 {
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ret void
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}
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define void @_Z3barv() #0 !dbg !9 {
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ret void
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}
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define void @_Z3bazv() #0 !dbg !10 {
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ret void
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}
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define void @_Z3zoov() #0 !dbg !11 {
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ret void
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}
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attributes #0 = {"use-sample-profile"}
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!2}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1)
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!1 = !DIFile(filename: "test.cc", directory: "/")
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!2 = !{i32 2, !"Debug Info Version", i32 3}
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!3 = distinct !DISubprogram(name: "test", scope: !1, file: !1, line: 3, unit: !0)
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!4 = !DILocation(line: 4, scope: !3)
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!5 = !DILocation(line: 5, scope: !3)
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!6 = !DILocation(line: 6, scope: !3)
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!7 = !DILocation(line: 7, scope: !3)
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!8 = distinct !DISubprogram(name: "foo", linkageName: "_Z3foov", scope: !1, file: !1, line: 29, unit: !0)
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!9 = distinct !DISubprogram(name: "bar", linkageName: "_Z3barv", scope: !1, file: !1, line: 32, unit: !0)
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!10 = distinct !DISubprogram(name: "baz", linkageName: "_Z3bazv", scope: !1, file: !1, line: 24, unit: !0)
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!11 = distinct !DISubprogram(name: "zoo", linkageName: "_Z3zoov", scope: !1, file: !1, line: 24, unit: !0)
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; ICP-ALL: remark: test.cc:5:0: _Z3bazv inlined into test
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; ICP-ALL-NEXT: remark: test.cc:4:0: _Z3foov inlined into test
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; ICP-ALL-NEXT: remark: test.cc:4:0: _Z3barv inlined into test
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; ICP-ALL-NOT: remark
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; ICP-HOT: remark: test.cc:4:0: _Z3foov inlined into test
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; ICP-HOT-NOT: remark
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