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//===- pass.c - Simple test of C APIs -------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM
// Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
/* RUN: mlir-capi-pass-test 2>&1 | FileCheck %s
*/
#include "mlir-c/Pass.h"
#include "mlir-c/IR.h"
#include "mlir-c/Registration.h"
#include "mlir-c/Transforms.h"
#include <assert.h>
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
void testRunPassOnModule() {
MlirContext ctx = mlirContextCreate();
mlirRegisterAllDialects(ctx);
MlirModule module = mlirModuleCreateParse(
ctx,
// clang-format off
mlirStringRefCreateFromCString(
"func @foo(%arg0 : i32) -> i32 { \n"
" %res = arith.addi %arg0, %arg0 : i32 \n"
" return %res : i32 \n"
"}"));
// clang-format on
if (mlirModuleIsNull(module)) {
fprintf(stderr, "Unexpected failure parsing module.\n");
exit(EXIT_FAILURE);
}
// Run the print-op-stats pass on the top-level module:
// CHECK-LABEL: Operations encountered:
// CHECK: arith.addi , 1
// CHECK: builtin.func , 1
// CHECK: std.return , 1
{
MlirPassManager pm = mlirPassManagerCreate(ctx);
MlirPass printOpStatPass = mlirCreateTransformsPrintOpStats();
mlirPassManagerAddOwnedPass(pm, printOpStatPass);
MlirLogicalResult success = mlirPassManagerRun(pm, module);
if (mlirLogicalResultIsFailure(success)) {
fprintf(stderr, "Unexpected failure running pass manager.\n");
exit(EXIT_FAILURE);
}
mlirPassManagerDestroy(pm);
}
mlirModuleDestroy(module);
mlirContextDestroy(ctx);
}
void testRunPassOnNestedModule() {
MlirContext ctx = mlirContextCreate();
mlirRegisterAllDialects(ctx);
MlirModule module =
mlirModuleCreateParse(ctx,
// clang-format off
mlirStringRefCreateFromCString(
"func @foo(%arg0 : i32) -> i32 { \n"
" %res = arith.addi %arg0, %arg0 : i32 \n"
" return %res : i32 \n"
"} \n"
"module { \n"
" func @bar(%arg0 : f32) -> f32 { \n"
" %res = arith.addf %arg0, %arg0 : f32 \n"
" return %res : f32 \n"
" } \n"
"}"));
// clang-format on
if (mlirModuleIsNull(module))
exit(1);
// Run the print-op-stats pass on functions under the top-level module:
// CHECK-LABEL: Operations encountered:
// CHECK: arith.addi , 1
// CHECK: builtin.func , 1
// CHECK: std.return , 1
{
MlirPassManager pm = mlirPassManagerCreate(ctx);
MlirOpPassManager nestedFuncPm = mlirPassManagerGetNestedUnder(
pm, mlirStringRefCreateFromCString("builtin.func"));
MlirPass printOpStatPass = mlirCreateTransformsPrintOpStats();
mlirOpPassManagerAddOwnedPass(nestedFuncPm, printOpStatPass);
MlirLogicalResult success = mlirPassManagerRun(pm, module);
if (mlirLogicalResultIsFailure(success))
exit(2);
mlirPassManagerDestroy(pm);
}
// Run the print-op-stats pass on functions under the nested module:
// CHECK-LABEL: Operations encountered:
// CHECK: arith.addf , 1
// CHECK: builtin.func , 1
// CHECK: std.return , 1
{
MlirPassManager pm = mlirPassManagerCreate(ctx);
MlirOpPassManager nestedModulePm = mlirPassManagerGetNestedUnder(
pm, mlirStringRefCreateFromCString("builtin.module"));
MlirOpPassManager nestedFuncPm = mlirOpPassManagerGetNestedUnder(
nestedModulePm, mlirStringRefCreateFromCString("builtin.func"));
MlirPass printOpStatPass = mlirCreateTransformsPrintOpStats();
mlirOpPassManagerAddOwnedPass(nestedFuncPm, printOpStatPass);
MlirLogicalResult success = mlirPassManagerRun(pm, module);
if (mlirLogicalResultIsFailure(success))
exit(2);
mlirPassManagerDestroy(pm);
}
mlirModuleDestroy(module);
mlirContextDestroy(ctx);
}
static void printToStderr(MlirStringRef str, void *userData) {
(void)userData;
fwrite(str.data, 1, str.length, stderr);
}
void testPrintPassPipeline() {
MlirContext ctx = mlirContextCreate();
MlirPassManager pm = mlirPassManagerCreate(ctx);
// Populate the pass-manager
MlirOpPassManager nestedModulePm = mlirPassManagerGetNestedUnder(
pm, mlirStringRefCreateFromCString("builtin.module"));
MlirOpPassManager nestedFuncPm = mlirOpPassManagerGetNestedUnder(
nestedModulePm, mlirStringRefCreateFromCString("builtin.func"));
MlirPass printOpStatPass = mlirCreateTransformsPrintOpStats();
mlirOpPassManagerAddOwnedPass(nestedFuncPm, printOpStatPass);
// Print the top level pass manager
// CHECK: Top-level: builtin.module(builtin.func(print-op-stats))
fprintf(stderr, "Top-level: ");
mlirPrintPassPipeline(mlirPassManagerGetAsOpPassManager(pm), printToStderr,
NULL);
fprintf(stderr, "\n");
// Print the pipeline nested one level down
// CHECK: Nested Module: builtin.func(print-op-stats)
fprintf(stderr, "Nested Module: ");
mlirPrintPassPipeline(nestedModulePm, printToStderr, NULL);
fprintf(stderr, "\n");
// Print the pipeline nested two levels down
// CHECK: Nested Module>Func: print-op-stats
fprintf(stderr, "Nested Module>Func: ");
mlirPrintPassPipeline(nestedFuncPm, printToStderr, NULL);
fprintf(stderr, "\n");
mlirPassManagerDestroy(pm);
mlirContextDestroy(ctx);
}
void testParsePassPipeline() {
MlirContext ctx = mlirContextCreate();
MlirPassManager pm = mlirPassManagerCreate(ctx);
// Try parse a pipeline.
MlirLogicalResult status = mlirParsePassPipeline(
mlirPassManagerGetAsOpPassManager(pm),
mlirStringRefCreateFromCString(
"builtin.module(builtin.func(print-op-stats), builtin.func(print-op-stats))"));
// Expect a failure, we haven't registered the print-op-stats pass yet.
if (mlirLogicalResultIsSuccess(status)) {
fprintf(stderr, "Unexpected success parsing pipeline without registering the pass\n");
exit(EXIT_FAILURE);
}
// Try again after registrating the pass.
mlirRegisterTransformsPrintOpStats();
status = mlirParsePassPipeline(
mlirPassManagerGetAsOpPassManager(pm),
mlirStringRefCreateFromCString(
"builtin.module(builtin.func(print-op-stats), builtin.func(print-op-stats))"));
// Expect a failure, we haven't registered the print-op-stats pass yet.
if (mlirLogicalResultIsFailure(status)) {
fprintf(stderr, "Unexpected failure parsing pipeline after registering the pass\n");
exit(EXIT_FAILURE);
}
// CHECK: Round-trip: builtin.module(builtin.func(print-op-stats), builtin.func(print-op-stats))
fprintf(stderr, "Round-trip: ");
mlirPrintPassPipeline(mlirPassManagerGetAsOpPassManager(pm), printToStderr,
NULL);
fprintf(stderr, "\n");
mlirPassManagerDestroy(pm);
mlirContextDestroy(ctx);
}
int main() {
testRunPassOnModule();
testRunPassOnNestedModule();
testPrintPassPipeline();
testParsePassPipeline();
return 0;
}
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