87 lines
3 KiB
Text
87 lines
3 KiB
Text
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// This is a regression test for supplementary profiles.
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// What the test does:
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// - Generate raw profiles from an executable and convert it to indexed profiles.
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// - Merge indexed profiles with supplementary sample-pgo profiles
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// - Check that the block counters for function foo is scaled up.
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// REQUIRES: lld-available
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// Building the instrumented binary will fail because lld doesn't support
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// big-endian ELF for PPC (aka ABI 1).
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// ld.lld: error: /lib/../lib64/Scrt1.o: ABI version 1 is not supported
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// UNSUPPORTED: ppc && host-byteorder-big-endian
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// This compiler-rt test aims to have test coverage for the IRPGO name format
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// of local-linkage functions during raw profile generation. The C++ functions
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// are simple with little optimization space so test outputs are more stable.
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// On the other hand, LLVM tests (like tools/llvm-profdata/suppl-instr-with-sample-static-func.test
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// or other suppl* test under tools/llvm-profdata dir) are more suitable for
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// more sophisticated cases (e.g., pseudo hot functions or profiles with discriminiators, etc).
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// RUN: rm -rf %t && split-file %s %t && cd %t
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// Use clangxx_pgogen for IR level instrumentation for C++.
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// The test case is constructed such that `-funique-internal-linkage-names` is
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// not used in instrPGO but used in static function names in SamplePGO.
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// RUN: %clangxx_pgogen -fuse-ld=lld -O2 main.cpp -o main
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// RUN: env LLVM_PROFILE_FILE=main.profraw %run ./main
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// RUN: llvm-profdata merge main.profraw -o main.profdata
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// The function counters are not scaled up.
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// RUN: llvm-profdata show -all-functions -counts main.profdata | FileCheck %s --check-prefix=INSTR
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// The instrPGO profile counter of function foo should be scaled up. Note the
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// scaling factor of a function is computed based on instrPGO profiles and
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// invariant to samplePGO profile counters.
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// RUN: llvm-profdata merge -supplement-instr-with-sample=sampleprof.proftext \
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// RUN: -suppl-min-size-threshold=0 -instr-prof-cold-threshold=1 \
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// RUN: main.profdata -o merge.profdata
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// RUN: llvm-profdata show -all-functions -counts merge.profdata | FileCheck %s --check-prefix=SUPPL
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// INSTR: Counters:
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// INSTR: main:
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// INSTR: Counters: 1
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// INSTR: Block counts: [1]
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// INSTR: _Z3barv:
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// INSTR: Counters: 1
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// INSTR: Block counts: [2]
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// INSTR: main.cpp;_ZL3foov:
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// INSTR: Counters: 1
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// INSTR: Block counts: [1]
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// INSTR: Functions shown: 3
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// INSTR: Total functions: 3
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// SUPPL: Counters:
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// SUPPL: main:
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// SUPPL: Counters: 1
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// SUPPL: Block counts: [1]
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// SUPPL: _Z3barv:
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// SUPPL: Counters: 1
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// SUPPL: Block counts: [2]
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// SUPPL: main.cpp;_ZL3foov:
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// SUPPL: Counters: 1
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// SUPPL: Block counts: [3]
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//--- main.cpp
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// mark foo and bar as noinline so preinliner won't inlined them into main
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// before the instrumentation pass.
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__attribute__((noinline)) static void foo() {
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}
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__attribute__((noinline)) void bar() {
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}
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int main() {
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foo();
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bar();
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bar();
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return 0;
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}
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//--- sampleprof.proftext
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_ZL3foov.__uniq.23343505234642233139497840575431302970:5:5
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1: 5
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