derek.holloway
7502bf64a4
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65 lines
2.2 KiB
LLVM
65 lines
2.2 KiB
LLVM
; RUN: split-file %s %t
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; RUN: llvm-ctxprof-util fromYAML --input %t/profile.yaml --output %t/profile.ctxprofdata
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;
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; In the given profile, in one of the contexts the indirect call is taken, the
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; target we're trying to ICP - GUID:2000 - doesn't appear at all. That should
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; contribute to the count of the "indirect call BB".
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; RUN: opt %t/test.ll -S -passes='require<ctx-prof-analysis>,module-inline,ctx-prof-flatten' -use-ctx-profile=%t/profile.ctxprofdata -ctx-prof-promote-alwaysinline
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; CHECK-LABEL: define i32 @caller(ptr %c)
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; CHECK-NEXT: [[CND:[0-9]+]] = icmp eq ptr %c, @one
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; CHECK-NEXT: br i1 [[CND]], label %{{.*}}, label %{{.*}}, !prof ![[BW:[0-9]+]]
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; CHECK: ![[BW]] = !{!"branch_weights", i32 10, i32 10}
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;--- test.ll
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declare i32 @external(i32 %x)
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define i32 @one() #0 !guid !0 {
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call void @llvm.instrprof.increment(ptr @one, i64 123, i32 1, i32 0)
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call void @llvm.instrprof.callsite(ptr @one, i64 123, i32 1, i32 0, ptr @external)
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%ret = call i32 @external(i32 1)
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ret i32 %ret
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}
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define i32 @caller(ptr %c) #1 !guid !1 {
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call void @llvm.instrprof.increment(ptr @caller, i64 567, i32 1, i32 0)
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call void @llvm.instrprof.callsite(ptr @caller, i64 567, i32 1, i32 0, ptr %c)
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%ret = call i32 %c()
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ret i32 %ret
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}
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define i32 @root(ptr %c) !guid !2 {
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call void @llvm.instrprof.increment(ptr @root, i64 432, i32 1, i32 0)
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call void @llvm.instrprof.callsite(ptr @root, i64 432, i32 2, i32 0, ptr @caller)
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%a = call i32 @caller(ptr %c)
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call void @llvm.instrprof.callsite(ptr @root, i64 432, i32 2, i32 1, ptr @caller)
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%b = call i32 @caller(ptr %c)
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%ret = add i32 %a, %b
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ret i32 %ret
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}
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attributes #0 = { alwaysinline }
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attributes #1 = { noinline }
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!0 = !{i64 1000}
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!1 = !{i64 3000}
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!2 = !{i64 4000}
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;--- profile.yaml
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Contexts:
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- Guid: 4000
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TotalRootEntryCount: 10
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Counters: [10]
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Callsites: -
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- Guid: 3000
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Counters: [10]
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Callsites: -
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- Guid: 1000
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Counters: [10]
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-
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- Guid: 3000
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Counters: [10]
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Callsites: -
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- Guid: 9000
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Counters: [10]
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