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llvm-project/llvm/test/Instrumentation/InstrProfiling/noruntime.ll

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InstrProf: An intrinsic and lowering for instrumentation based profiling Introduce the ``llvm.instrprof_increment`` intrinsic and the ``-instrprof`` pass. These provide the infrastructure for writing counters for profiling, as in clang's ``-fprofile-instr-generate``. The implementation of the instrprof pass is ported directly out of the CodeGenPGO classes in clang, and with the followup in clang that rips that code out to use these new intrinsics this ends up being NFC. Doing the instrumentation this way opens some doors in terms of improving the counter performance. For example, this will make it simple to experiment with alternate lowering strategies, and allows us to try handling profiling specially in some optimizations if we want to. Finally, this drastically simplifies the frontend and puts all of the lowering logic in one place. llvm-svn: 223672
2014-12-09 02:02:35 +08:00
;; Check that we don't emit the runtime hooks if the user provided them.
; RUN: opt < %s -instrprof -S | FileCheck %s
; CHECK-NOT: define {{.*}} @__llvm_profile_runtime_user()
[opaque pointer type] Add textual IR support for explicit type parameter to load instruction Essentially the same as the GEP change in r230786. A similar migration script can be used to update test cases, though a few more test case improvements/changes were required this time around: (r229269-r229278) import fileinput import sys import re pat = re.compile(r"((?:=|:|^)\s*load (?:atomic )?(?:volatile )?(.*?))(| addrspace\(\d+\) *)\*($| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$)") for line in sys.stdin: sys.stdout.write(re.sub(pat, r"\1, \2\3*\4", line)) Reviewers: rafael, dexonsmith, grosser Differential Revision: http://reviews.llvm.org/D7649 llvm-svn: 230794
2015-02-28 05:17:42 +08:00
; CHECK-NOT: load i32, i32* @__llvm_profile_runtime
InstrProf: An intrinsic and lowering for instrumentation based profiling Introduce the ``llvm.instrprof_increment`` intrinsic and the ``-instrprof`` pass. These provide the infrastructure for writing counters for profiling, as in clang's ``-fprofile-instr-generate``. The implementation of the instrprof pass is ported directly out of the CodeGenPGO classes in clang, and with the followup in clang that rips that code out to use these new intrinsics this ends up being NFC. Doing the instrumentation this way opens some doors in terms of improving the counter performance. For example, this will make it simple to experiment with alternate lowering strategies, and allows us to try handling profiling specially in some optimizations if we want to. Finally, this drastically simplifies the frontend and puts all of the lowering logic in one place. llvm-svn: 223672
2014-12-09 02:02:35 +08:00
@__llvm_profile_runtime = global i32 0, align 4
[PGO] Shorten profile symbol prefixes Profile symbols have long prefixes which waste space and creating pressure for linker. This patch shortens the prefixes to minimal length without losing verbosity. Differential Revision: http://reviews.llvm.org/D15503 llvm-svn: 255575
2015-12-15 07:26:27 +08:00
@__prf_nm_foo = hidden constant [3 x i8] c"foo"
InstrProf: An intrinsic and lowering for instrumentation based profiling Introduce the ``llvm.instrprof_increment`` intrinsic and the ``-instrprof`` pass. These provide the infrastructure for writing counters for profiling, as in clang's ``-fprofile-instr-generate``. The implementation of the instrprof pass is ported directly out of the CodeGenPGO classes in clang, and with the followup in clang that rips that code out to use these new intrinsics this ends up being NFC. Doing the instrumentation this way opens some doors in terms of improving the counter performance. For example, this will make it simple to experiment with alternate lowering strategies, and allows us to try handling profiling specially in some optimizations if we want to. Finally, this drastically simplifies the frontend and puts all of the lowering logic in one place. llvm-svn: 223672
2014-12-09 02:02:35 +08:00
define void @foo() {
[PGO] Shorten profile symbol prefixes Profile symbols have long prefixes which waste space and creating pressure for linker. This patch shortens the prefixes to minimal length without losing verbosity. Differential Revision: http://reviews.llvm.org/D15503 llvm-svn: 255575
2015-12-15 07:26:27 +08:00
call void @llvm.instrprof.increment(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @__prf_nm_foo, i32 0, i32 0), i64 0, i32 1, i32 0)
InstrProf: An intrinsic and lowering for instrumentation based profiling Introduce the ``llvm.instrprof_increment`` intrinsic and the ``-instrprof`` pass. These provide the infrastructure for writing counters for profiling, as in clang's ``-fprofile-instr-generate``. The implementation of the instrprof pass is ported directly out of the CodeGenPGO classes in clang, and with the followup in clang that rips that code out to use these new intrinsics this ends up being NFC. Doing the instrumentation this way opens some doors in terms of improving the counter performance. For example, this will make it simple to experiment with alternate lowering strategies, and allows us to try handling profiling specially in some optimizations if we want to. Finally, this drastically simplifies the frontend and puts all of the lowering logic in one place. llvm-svn: 223672
2014-12-09 02:02:35 +08:00
ret void
}
declare void @llvm.instrprof.increment(i8*, i64, i32, i32)