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llvm-project/clang/test/OpenMP/nvptx_target_printf_codegen.c
Shilei Tian 10068cd654 [OpenMP] Introduce kernel environment 
This patch introduces per kernel environment. Previously, flags such as execution mode are set through global variables with name like `__kernel_name_exec_mode`. They are accessible on the host by reading the corresponding global variable, but not from the device. Besides, some assumptions, such as no nested parallelism, are not per kernel basis, preventing us applying per kernel optimization in the device runtime.

This is a combination and refinement of patch series D116908, D116909, and D116910.

Depend on D155886.

Reviewed By: jdoerfert

Differential Revision: https://reviews.llvm.org/D142569
2023-07-26 13:35:14 -04:00

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// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py UTC_ARGS: --function-signature --include-generated-funcs --replace-value-regex "__omp_offloading_[0-9a-z]+_[0-9a-z]+" "reduction_size[.].+[.]" "pl_cond[.].+[.|,]" --prefix-filecheck-ir-name _
// Test target codegen - host bc file has to be created first.
// RUN: %clang_cc1 -verify -fopenmp -x c -triple powerpc64le-unknown-unknown -fopenmp-targets=nvptx64-nvidia-cuda -emit-llvm-bc %s -o %t-ppc-host.bc
// RUN: %clang_cc1 -verify -fopenmp -x c -triple nvptx64-unknown-unknown -fopenmp-targets=nvptx64-nvidia-cuda -emit-llvm %s -fopenmp-is-target-device -fopenmp-host-ir-file-path %t-ppc-host.bc -o - | FileCheck %s --check-prefix=CHECK-64
// RUN: %clang_cc1 -verify -fopenmp -x c -triple i386-unknown-unknown -fopenmp-targets=nvptx-nvidia-cuda -emit-llvm-bc %s -o %t-x86-host.bc
// RUN: %clang_cc1 -verify -fopenmp -x c -triple nvptx-unknown-unknown -fopenmp-targets=nvptx-nvidia-cuda -emit-llvm %s -fopenmp-is-target-device -fopenmp-host-ir-file-path %t-x86-host.bc -o - | FileCheck %s --check-prefix=CHECK-32
// expected-no-diagnostics
extern int printf(const char *, ...);
// Check a simple call to printf end-to-end.
int CheckSimple(void) {
#pragma omp target
{
// printf in master-only basic block.
const char* fmt = "%d %lld %f";
printf(fmt, 1, 2ll, 3.0);
}
return 0;
}
void CheckNoArgs(void) {
#pragma omp target
{
// printf in master-only basic block.
printf("hello, world!");
}
}
// Check that printf's alloca happens in the entry block, not inside the if
// statement.
int foo;
void CheckAllocaIsInEntryBlock(void) {
#pragma omp target
{
if (foo) {
printf("%d", 42);
}
}
}
// CHECK-64-LABEL: define {{[^@]+}}@{{__omp_offloading_[0-9a-z]+_[0-9a-z]+}}_CheckSimple_l13
// CHECK-64-SAME: () #[[ATTR0:[0-9]+]] {
// CHECK-64-NEXT: entry:
// CHECK-64-NEXT: [[FMT:%.*]] = alloca ptr, align 8
// CHECK-64-NEXT: [[TMP:%.*]] = alloca [[PRINTF_ARGS:%.*]], align 8
// CHECK-64-NEXT: [[TMP0:%.*]] = call i32 @__kmpc_target_init(ptr @{{__omp_offloading_[0-9a-z]+_[0-9a-z]+}}_CheckSimple_l13_kernel_environment)
// CHECK-64-NEXT: [[EXEC_USER_CODE:%.*]] = icmp eq i32 [[TMP0]], -1
// CHECK-64-NEXT: br i1 [[EXEC_USER_CODE]], label [[USER_CODE_ENTRY:%.*]], label [[WORKER_EXIT:%.*]]
// CHECK-64: user_code.entry:
// CHECK-64-NEXT: store ptr @.str, ptr [[FMT]], align 8
// CHECK-64-NEXT: [[TMP1:%.*]] = load ptr, ptr [[FMT]], align 8
// CHECK-64-NEXT: [[TMP2:%.*]] = getelementptr inbounds [[PRINTF_ARGS]], ptr [[TMP]], i32 0, i32 0
// CHECK-64-NEXT: store i32 1, ptr [[TMP2]], align 4
// CHECK-64-NEXT: [[TMP3:%.*]] = getelementptr inbounds [[PRINTF_ARGS]], ptr [[TMP]], i32 0, i32 1
// CHECK-64-NEXT: store i64 2, ptr [[TMP3]], align 8
// CHECK-64-NEXT: [[TMP4:%.*]] = getelementptr inbounds [[PRINTF_ARGS]], ptr [[TMP]], i32 0, i32 2
// CHECK-64-NEXT: store double 3.000000e+00, ptr [[TMP4]], align 8
// CHECK-64-NEXT: [[TMP5:%.*]] = call i32 @__llvm_omp_vprintf(ptr [[TMP1]], ptr [[TMP]], i32 24)
// CHECK-64-NEXT: call void @__kmpc_target_deinit()
// CHECK-64-NEXT: ret void
// CHECK-64: worker.exit:
// CHECK-64-NEXT: ret void
//
//
// CHECK-64-LABEL: define {{[^@]+}}@{{__omp_offloading_[0-9a-z]+_[0-9a-z]+}}_CheckNoArgs_l25
// CHECK-64-SAME: () #[[ATTR0]] {
// CHECK-64-NEXT: entry:
// CHECK-64-NEXT: [[TMP0:%.*]] = call i32 @__kmpc_target_init(ptr @{{__omp_offloading_[0-9a-z]+_[0-9a-z]+}}_CheckNoArgs_l25_kernel_environment)
// CHECK-64-NEXT: [[EXEC_USER_CODE:%.*]] = icmp eq i32 [[TMP0]], -1
// CHECK-64-NEXT: br i1 [[EXEC_USER_CODE]], label [[USER_CODE_ENTRY:%.*]], label [[WORKER_EXIT:%.*]]
// CHECK-64: user_code.entry:
// CHECK-64-NEXT: [[TMP1:%.*]] = call i32 @__llvm_omp_vprintf(ptr @.str1, ptr null, i32 0)
// CHECK-64-NEXT: call void @__kmpc_target_deinit()
// CHECK-64-NEXT: ret void
// CHECK-64: worker.exit:
// CHECK-64-NEXT: ret void
//
//
// CHECK-64-LABEL: define {{[^@]+}}@{{__omp_offloading_[0-9a-z]+_[0-9a-z]+}}_CheckAllocaIsInEntryBlock_l36
// CHECK-64-SAME: (i64 noundef [[FOO:%.*]]) #[[ATTR0]] {
// CHECK-64-NEXT: entry:
// CHECK-64-NEXT: [[FOO_ADDR:%.*]] = alloca i64, align 8
// CHECK-64-NEXT: [[TMP:%.*]] = alloca [[PRINTF_ARGS_0:%.*]], align 8
// CHECK-64-NEXT: store i64 [[FOO]], ptr [[FOO_ADDR]], align 8
// CHECK-64-NEXT: [[TMP0:%.*]] = call i32 @__kmpc_target_init(ptr @{{__omp_offloading_[0-9a-z]+_[0-9a-z]+}}_CheckAllocaIsInEntryBlock_l36_kernel_environment)
// CHECK-64-NEXT: [[EXEC_USER_CODE:%.*]] = icmp eq i32 [[TMP0]], -1
// CHECK-64-NEXT: br i1 [[EXEC_USER_CODE]], label [[USER_CODE_ENTRY:%.*]], label [[WORKER_EXIT:%.*]]
// CHECK-64: user_code.entry:
// CHECK-64-NEXT: [[TMP1:%.*]] = load i32, ptr [[FOO_ADDR]], align 4
// CHECK-64-NEXT: [[TOBOOL:%.*]] = icmp ne i32 [[TMP1]], 0
// CHECK-64-NEXT: br i1 [[TOBOOL]], label [[IF_THEN:%.*]], label [[IF_END:%.*]]
// CHECK-64: if.then:
// CHECK-64-NEXT: [[TMP2:%.*]] = getelementptr inbounds [[PRINTF_ARGS_0]], ptr [[TMP]], i32 0, i32 0
// CHECK-64-NEXT: store i32 42, ptr [[TMP2]], align 4
// CHECK-64-NEXT: [[TMP3:%.*]] = call i32 @__llvm_omp_vprintf(ptr @.str2, ptr [[TMP]], i32 4)
// CHECK-64-NEXT: br label [[IF_END]]
// CHECK-64: worker.exit:
// CHECK-64-NEXT: ret void
// CHECK-64: if.end:
// CHECK-64-NEXT: call void @__kmpc_target_deinit()
// CHECK-64-NEXT: ret void
//
//
// CHECK-32-LABEL: define {{[^@]+}}@{{__omp_offloading_[0-9a-z]+_[0-9a-z]+}}_CheckSimple_l13
// CHECK-32-SAME: () #[[ATTR0:[0-9]+]] {
// CHECK-32-NEXT: entry:
// CHECK-32-NEXT: [[FMT:%.*]] = alloca ptr, align 4
// CHECK-32-NEXT: [[TMP:%.*]] = alloca [[PRINTF_ARGS:%.*]], align 8
// CHECK-32-NEXT: [[TMP0:%.*]] = call i32 @__kmpc_target_init(ptr @{{__omp_offloading_[0-9a-z]+_[0-9a-z]+}}_CheckSimple_l13_kernel_environment)
// CHECK-32-NEXT: [[EXEC_USER_CODE:%.*]] = icmp eq i32 [[TMP0]], -1
// CHECK-32-NEXT: br i1 [[EXEC_USER_CODE]], label [[USER_CODE_ENTRY:%.*]], label [[WORKER_EXIT:%.*]]
// CHECK-32: user_code.entry:
// CHECK-32-NEXT: store ptr @.str, ptr [[FMT]], align 4
// CHECK-32-NEXT: [[TMP1:%.*]] = load ptr, ptr [[FMT]], align 4
// CHECK-32-NEXT: [[TMP2:%.*]] = getelementptr inbounds [[PRINTF_ARGS]], ptr [[TMP]], i32 0, i32 0
// CHECK-32-NEXT: store i32 1, ptr [[TMP2]], align 4
// CHECK-32-NEXT: [[TMP3:%.*]] = getelementptr inbounds [[PRINTF_ARGS]], ptr [[TMP]], i32 0, i32 1
// CHECK-32-NEXT: store i64 2, ptr [[TMP3]], align 8
// CHECK-32-NEXT: [[TMP4:%.*]] = getelementptr inbounds [[PRINTF_ARGS]], ptr [[TMP]], i32 0, i32 2
// CHECK-32-NEXT: store double 3.000000e+00, ptr [[TMP4]], align 8
// CHECK-32-NEXT: [[TMP5:%.*]] = call i32 @__llvm_omp_vprintf(ptr [[TMP1]], ptr [[TMP]], i32 24)
// CHECK-32-NEXT: call void @__kmpc_target_deinit()
// CHECK-32-NEXT: ret void
// CHECK-32: worker.exit:
// CHECK-32-NEXT: ret void
//
//
// CHECK-32-LABEL: define {{[^@]+}}@{{__omp_offloading_[0-9a-z]+_[0-9a-z]+}}_CheckNoArgs_l25
// CHECK-32-SAME: () #[[ATTR0]] {
// CHECK-32-NEXT: entry:
// CHECK-32-NEXT: [[TMP0:%.*]] = call i32 @__kmpc_target_init(ptr @{{__omp_offloading_[0-9a-z]+_[0-9a-z]+}}_CheckNoArgs_l25_kernel_environment)
// CHECK-32-NEXT: [[EXEC_USER_CODE:%.*]] = icmp eq i32 [[TMP0]], -1
// CHECK-32-NEXT: br i1 [[EXEC_USER_CODE]], label [[USER_CODE_ENTRY:%.*]], label [[WORKER_EXIT:%.*]]
// CHECK-32: user_code.entry:
// CHECK-32-NEXT: [[TMP1:%.*]] = call i32 @__llvm_omp_vprintf(ptr @.str1, ptr null, i32 0)
// CHECK-32-NEXT: call void @__kmpc_target_deinit()
// CHECK-32-NEXT: ret void
// CHECK-32: worker.exit:
// CHECK-32-NEXT: ret void
//
//
// CHECK-32-LABEL: define {{[^@]+}}@{{__omp_offloading_[0-9a-z]+_[0-9a-z]+}}_CheckAllocaIsInEntryBlock_l36
// CHECK-32-SAME: (i32 noundef [[FOO:%.*]]) #[[ATTR0]] {
// CHECK-32-NEXT: entry:
// CHECK-32-NEXT: [[FOO_ADDR:%.*]] = alloca i32, align 4
// CHECK-32-NEXT: [[TMP:%.*]] = alloca [[PRINTF_ARGS_0:%.*]], align 8
// CHECK-32-NEXT: store i32 [[FOO]], ptr [[FOO_ADDR]], align 4
// CHECK-32-NEXT: [[TMP0:%.*]] = call i32 @__kmpc_target_init(ptr @{{__omp_offloading_[0-9a-z]+_[0-9a-z]+}}_CheckAllocaIsInEntryBlock_l36_kernel_environment)
// CHECK-32-NEXT: [[EXEC_USER_CODE:%.*]] = icmp eq i32 [[TMP0]], -1
// CHECK-32-NEXT: br i1 [[EXEC_USER_CODE]], label [[USER_CODE_ENTRY:%.*]], label [[WORKER_EXIT:%.*]]
// CHECK-32: user_code.entry:
// CHECK-32-NEXT: [[TMP1:%.*]] = load i32, ptr [[FOO_ADDR]], align 4
// CHECK-32-NEXT: [[TOBOOL:%.*]] = icmp ne i32 [[TMP1]], 0
// CHECK-32-NEXT: br i1 [[TOBOOL]], label [[IF_THEN:%.*]], label [[IF_END:%.*]]
// CHECK-32: if.then:
// CHECK-32-NEXT: [[TMP2:%.*]] = getelementptr inbounds [[PRINTF_ARGS_0]], ptr [[TMP]], i32 0, i32 0
// CHECK-32-NEXT: store i32 42, ptr [[TMP2]], align 4
// CHECK-32-NEXT: [[TMP3:%.*]] = call i32 @__llvm_omp_vprintf(ptr @.str2, ptr [[TMP]], i32 4)
// CHECK-32-NEXT: br label [[IF_END]]
// CHECK-32: worker.exit:
// CHECK-32-NEXT: ret void
// CHECK-32: if.end:
// CHECK-32-NEXT: call void @__kmpc_target_deinit()
// CHECK-32-NEXT: ret void
//
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