anton-afanasyev created this revision.
anton-afanasyev added reviewers: russell.gallop, lebedev.ri, thakis.
Herald added subscribers: llvm-commits, cfe-commits, hiraditya.
Herald added projects: clang, LLVM.
Add `Frontend` time trace entry to `HandleTranslationUnit()` function.
Add test to check all codegen blocks are inside frontend blocks.
Also, change `--time-trace-granularity` option a bit to make sure very small
time blocks are outputed to json-file when using `--time-trace-granularity=0`.
This fixes http://llvm.org/pr41969
Repository:
rG LLVM Github Monorepo
https://reviews.llvm.org/D63325
Files:
clang/lib/CodeGen/CodeGenAction.cpp
clang/test/Driver/check-time-trace-blocks.cpp
clang/test/Driver/check-time-trace-blocks.py
llvm/lib/Support/TimeProfiler.cpp
Index: llvm/lib/Support/TimeProfiler.cpp
===================================================================
--- llvm/lib/Support/TimeProfiler.cpp
+++ llvm/lib/Support/TimeProfiler.cpp
@@ -65,7 +65,7 @@
E.Duration = steady_clock::now() - E.Start;
// Only include sections longer than TimeTraceGranularity msec.
- if (duration_cast<microseconds>(E.Duration).count() > TimeTraceGranularity)
+ if (duration_cast<microseconds>(E.Duration).count() >=
TimeTraceGranularity)
Entries.emplace_back(E);
// Track total time taken by each "name", but only the topmost levels of
Index: clang/test/Driver/check-time-trace-blocks.py
===================================================================
--- /dev/null
+++ clang/test/Driver/check-time-trace-blocks.py
@@ -0,0 +1,16 @@
+#!/usr/bin/env python
+
+import json, sys
+
+events = json.loads(sys.stdin.read())["traceEvents"]
+codegens = filter(lambda x: x["name"] == "CodeGen Function", events)
+frontends = filter(lambda x: x["name"] == "Frontend", events)
+
+def is_inside(range1, range2):
+ a = range1["ts"]; b = a + range1["dur"]
+ c = range2["ts"]; d = c + range2["dur"]
+ return (a >= c and a <= d) and (b >= c and b <= d)
+
+if not all([any([is_inside(codegen, frontend) for frontend in frontends])
+ for codegen in codegens]):
+ sys.exit("Not all CodeGen blocks are inside any of Frontend blocks!")
Index: clang/test/Driver/check-time-trace-blocks.cpp
===================================================================
--- /dev/null
+++ clang/test/Driver/check-time-trace-blocks.cpp
@@ -0,0 +1,7 @@
+// REQUIRES: shell
+// RUN: %clangxx -S -ftime-trace -mllvm --time-trace-granularity=0 -o
%T/check-time-trace-blocks %s
+// RUN: cat %T/check-time-trace-blocks.json | %python
%s/check-time-trace-blocks.py
+
+template <typename T>
+void foo(T) {}
+void bar() { foo(0); }
Index: clang/lib/CodeGen/CodeGenAction.cpp
===================================================================
--- clang/lib/CodeGen/CodeGenAction.cpp
+++ clang/lib/CodeGen/CodeGenAction.cpp
@@ -37,6 +37,7 @@
#include "llvm/Pass.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/SourceMgr.h"
+#include "llvm/Support/TimeProfiler.h"
#include "llvm/Support/Timer.h"
#include "llvm/Support/ToolOutputFile.h"
#include "llvm/Support/YAMLTraits.h"
@@ -228,6 +229,7 @@
void HandleTranslationUnit(ASTContext &C) override {
{
+ llvm::TimeTraceScope TimeScope("Frontend", StringRef(""));
PrettyStackTraceString CrashInfo("Per-file LLVM IR generation");
if (FrontendTimesIsEnabled) {
LLVMIRGenerationRefCount += 1;
Index: llvm/lib/Support/TimeProfiler.cpp
===================================================================
--- llvm/lib/Support/TimeProfiler.cpp
+++ llvm/lib/Support/TimeProfiler.cpp
@@ -65,7 +65,7 @@
E.Duration = steady_clock::now() - E.Start;
// Only include sections longer than TimeTraceGranularity msec.
- if (duration_cast<microseconds>(E.Duration).count() > TimeTraceGranularity)
+ if (duration_cast<microseconds>(E.Duration).count() >= TimeTraceGranularity)
Entries.emplace_back(E);
// Track total time taken by each "name", but only the topmost levels of
Index: clang/test/Driver/check-time-trace-blocks.py
===================================================================
--- /dev/null
+++ clang/test/Driver/check-time-trace-blocks.py
@@ -0,0 +1,16 @@
+#!/usr/bin/env python
+
+import json, sys
+
+events = json.loads(sys.stdin.read())["traceEvents"]
+codegens = filter(lambda x: x["name"] == "CodeGen Function", events)
+frontends = filter(lambda x: x["name"] == "Frontend", events)
+
+def is_inside(range1, range2):
+ a = range1["ts"]; b = a + range1["dur"]
+ c = range2["ts"]; d = c + range2["dur"]
+ return (a >= c and a <= d) and (b >= c and b <= d)
+
+if not all([any([is_inside(codegen, frontend) for frontend in frontends])
+ for codegen in codegens]):
+ sys.exit("Not all CodeGen blocks are inside any of Frontend blocks!")
Index: clang/test/Driver/check-time-trace-blocks.cpp
===================================================================
--- /dev/null
+++ clang/test/Driver/check-time-trace-blocks.cpp
@@ -0,0 +1,7 @@
+// REQUIRES: shell
+// RUN: %clangxx -S -ftime-trace -mllvm --time-trace-granularity=0 -o %T/check-time-trace-blocks %s
+// RUN: cat %T/check-time-trace-blocks.json | %python %s/check-time-trace-blocks.py
+
+template <typename T>
+void foo(T) {}
+void bar() { foo(0); }
Index: clang/lib/CodeGen/CodeGenAction.cpp
===================================================================
--- clang/lib/CodeGen/CodeGenAction.cpp
+++ clang/lib/CodeGen/CodeGenAction.cpp
@@ -37,6 +37,7 @@
#include "llvm/Pass.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/SourceMgr.h"
+#include "llvm/Support/TimeProfiler.h"
#include "llvm/Support/Timer.h"
#include "llvm/Support/ToolOutputFile.h"
#include "llvm/Support/YAMLTraits.h"
@@ -228,6 +229,7 @@
void HandleTranslationUnit(ASTContext &C) override {
{
+ llvm::TimeTraceScope TimeScope("Frontend", StringRef(""));
PrettyStackTraceString CrashInfo("Per-file LLVM IR generation");
if (FrontendTimesIsEnabled) {
LLVMIRGenerationRefCount += 1;
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