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feat(warpforthc): expose opt-level, features and libdevice options #137

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Merged
tetsuo-cpp merged 1 commit into from
Oct 24, 2026
Merged

feat(warpforthc): expose opt-level, features and libdevice options #137

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12 changes: 12 additions & 0 deletions test/Pipeline/warpforthc-options.forth
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Original file line number Diff line number Diff line change
@@ -0,0 +1,12 @@
\ RUN: %warpforthc -O3 --features=+ptx70 --mlir-print-ir-after-all --mlir-disable-threading %s -o %t.ptx 2>&1 | %FileCheck %s
\ RUN: %warpforthc --opt-level=0 --arch sm_80 --mlir-print-ir-after-all --mlir-disable-threading %s -o %t.ptx 2>&1 | %FileCheck %s --check-prefix=O0
\ RUN: %warpforthc --features=+ptx70 %s -o - | %FileCheck %s --check-prefix=PTX
\ RUN: %not %warpforthc -O4 %s -o %t.ptx 2>&1 | %FileCheck %s --check-prefix=BAD-OPT

\! kernel main
42

\ CHECK: #nvvm.target<O = 3, chip = "sm_70", features = "+ptx70"
\ O0: #nvvm.target<O = 0, chip = "sm_80"
\ PTX: .version 7.0
\ BAD-OPT: Cannot find option named '4'!
27 changes: 27 additions & 0 deletions tools/warpforthc/warpforthc.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -27,6 +27,7 @@
#include "llvm/Support/InitLLVM.h"
#include "llvm/Support/SourceMgr.h"
#include "llvm/Support/ToolOutputFile.h"
#include "llvm/Support/raw_ostream.h"

using namespace mlir;

Expand All @@ -42,6 +43,22 @@ static llvm::cl::opt<std::string, false, warpforth::NVVMChipParser>
targetArchitecture("arch", llvm::cl::desc("GPU architecture"),
llvm::cl::value_desc("sm_XX"), llvm::cl::init("sm_70"));

static llvm::cl::opt<std::string>
optLevel("O", llvm::cl::desc("Optimization level (0, 1, 2, or 3)"),
llvm::cl::value_desc("level"), llvm::cl::Prefix,
llvm::cl::init(""));
static llvm::cl::alias optLevelAlias("opt-level",
llvm::cl::desc("Alias for -O"),
llvm::cl::aliasopt(optLevel));

static llvm::cl::opt<std::string>
targetFeatures("features", llvm::cl::desc("NVVM target features"),
llvm::cl::value_desc("+ptxNN"), llvm::cl::init(""));

static llvm::cl::opt<std::string>
libdevicePath("libdevice", llvm::cl::desc("Path to the libdevice bitcode"),
llvm::cl::value_desc("path"), llvm::cl::init(""));

int main(int argc, char **argv) {
llvm::InitLLVM y(argc, argv);
warpforth::registerConversionPasses();
Expand Down Expand Up @@ -85,6 +102,16 @@ int main(int argc, char **argv) {
if (failed(applyPassManagerCLOptions(pm)))
return 1;
warpforth::WarpForthPipelineOptions pipelineOptions;
std::string overrides;
llvm::raw_string_ostream overridesOS(overrides);
if (!optLevel.empty())
overridesOS << " opt-level=" << optLevel;
if (!targetFeatures.empty())
overridesOS << " features=" << targetFeatures;
if (!libdevicePath.empty())
overridesOS << " libdevice=" << libdevicePath;
if (failed(pipelineOptions.parseFromString(overrides)))
return 1;
pipelineOptions.chip = targetArchitecture.getValue();
warpforth::buildWarpForthPipeline(pm, pipelineOptions);
if (failed(pm.run(*module)))
Expand Down
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