bef3b54ea1
In https://github.com/llvm/llvm-project/pull/109837, it sets a global variable(`PGOInstrumentColdFunctionOnly`) in PassBuilderPipelines.cpp which introduced a data race detected by TSan. To fix this, I decouple the flag setting, the flags are now set separately(`instrument-cold-function-only-path` is required to be used with `--pgo-instrument-cold-function-only`).
36 lines
1.4 KiB
LLVM
36 lines
1.4 KiB
LLVM
; RUN: opt < %s --passes=pgo-instr-gen -pgo-instrument-cold-function-only -pgo-function-entry-coverage -S | FileCheck --check-prefixes=COLD %s
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; RUN: opt < %s --passes=pgo-instr-gen -pgo-instrument-cold-function-only -pgo-function-entry-coverage -pgo-cold-instrument-entry-threshold=1 -S | FileCheck --check-prefixes=ENTRY-COUNT %s
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; RUN: opt < %s --passes=pgo-instr-gen -pgo-instrument-cold-function-only -pgo-function-entry-coverage -pgo-treat-unknown-as-cold -S | FileCheck --check-prefixes=UNKNOWN-FUNC %s
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; COLD: call void @llvm.instrprof.cover(ptr @__profn_foo, i64 [[#]], i32 1, i32 0)
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; COLD-NOT: __profn_main
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; COLD-NOT: __profn_bar
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; ENTRY-COUNT: call void @llvm.instrprof.cover(ptr @__profn_foo, i64 [[#]], i32 1, i32 0)
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; ENTRY-COUNT: call void @llvm.instrprof.cover(ptr @__profn_main, i64 [[#]], i32 1, i32 0)
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; UNKNOWN-FUNC: call void @llvm.instrprof.cover(ptr @__profn_bar, i64 [[#]], i32 1, i32 0)
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; UNKNOWN-FUNC: call void @llvm.instrprof.cover(ptr @__profn_foo, i64 [[#]], i32 1, i32 0)
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target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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define void @bar() {
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entry:
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ret void
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}
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define void @foo() !prof !0 {
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entry:
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ret void
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}
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define i32 @main() !prof !1 {
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entry:
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ret i32 0
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}
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!0 = !{!"function_entry_count", i64 0}
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!1 = !{!"function_entry_count", i64 1}
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