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[WIP] Trying to Dump IR or Line Numbers of Loops #493

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[WIP] Trying to Dump IR or Line Numbers of Loops #493

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15 changes: 15 additions & 0 deletions examples/example_unrolling_service/loop_unroller/BUILD
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Original file line number Diff line number Diff line change
Expand Up @@ -6,18 +6,33 @@
# This package exposes the LLVM optimization pipeline as a CompilerGym service.
load("@rules_cc//cc:defs.bzl", "cc_binary")

genrule(
name = "libLLVMRuntimeDyld",
srcs = [
"@clang-llvm-10.0.0-x86_64-linux-gnu-ubuntu-18.04//:all_files",
"@clang-llvm-10.0.0-x86_64-linux-gnu-ubuntu-18.04//:clang",
],
outs = ["libLLVMRuntimeDyld.a"],
cmd = "cp $$(dirname $(location @clang-llvm-10.0.0-x86_64-linux-gnu-ubuntu-18.04//:clang))/../lib/libLLVMRuntimeDyld.a $@",
visibility = ["//visibility:public"],
)

cc_binary(
name = "loop_unroller",
srcs = [
"loop_unroller.cc",
#"@clang-llvm-10.0.0-x86_64-linux-gnu-ubuntu-18.04//:lib/libLLVMRuntimeDyld.a",
":libLLVMRuntimeDyld",
],
copts = [
"-Wall",
"-fdiagnostics-color=always",
"-fno-rtti",
"-force_load",
],
visibility = ["//visibility:public"],
deps = [
"@llvm//10.0.0",
#":libLLVMRuntimeDyld",
],
)
19 changes: 16 additions & 3 deletions examples/example_unrolling_service/loop_unroller/loop_unroller.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -72,6 +72,7 @@ class LoopCounter : public llvm::FunctionPass {
public:
static char ID;
std::unordered_map<std::string, int> counts;
std::vector<int> line_numbers;

LoopCounter() : FunctionPass(ID) {}

Expand All @@ -86,6 +87,15 @@ class LoopCounter : public llvm::FunctionPass {
// Should really account for module, too.
counts[F.getName().str()] = Loops.size();

for (auto L : Loops) {
// any of these lines throws "dyld: lazy symbol binding failed: Symbol not found" error
L->getLoopID()->dump();
// L->dump();
// L->getLocRange().getStart().dump();
// L->getLocRange().getEnd().dump();
// line_numbers.push_back( L->getStartLoc().getLine());
}

return false;
}
};
Expand Down Expand Up @@ -114,11 +124,11 @@ class LoopUnrollConfigurator : public llvm::FunctionPass {
auto Loops = LI.getLoopsInPreorder();

// Should really account for module, too.
for (auto ALoop : Loops) {
for (auto L : Loops) {
if (UnrollEnable)
addStringMetadataToLoop(ALoop, "llvm.loop.unroll.enable", UnrollEnable);
addStringMetadataToLoop(L, "llvm.loop.unroll.enable", UnrollEnable);
if (UnrollCount)
addStringMetadataToLoop(ALoop, "llvm.loop.unroll.count", UnrollCount);
addStringMetadataToLoop(L, "llvm.loop.unroll.count", UnrollCount);
}

return false;
Expand Down Expand Up @@ -194,6 +204,9 @@ int main(int argc, char** argv) {
for (auto& x : Counter->counts) {
llvm::dbgs() << x.first << ": " << x.second << " loops" << '\n';
}
for (auto& x : Counter->line_numbers) {
llvm::dbgs() << x << '\n';
}

Out.keep();

Expand Down