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clang-p2996/clang/test/OpenMP/assumes_codegen.cpp
Joseph Huber d12502a3ab [OpenMP] Apply OpenMP assumptions to applicable call sites 
This patch adds OpenMP assumption attributes to call sites in applicable
regions. Currently this applies the caller's assumption attributes to
any calls contained within it. So, if a call occurs inside an OpenMP
assumes region to a function outside that region, we will assume that
call respects the assumptions. This is primarily useful for inline
assembly calls used heavily in the OpenMP GPU device runtime, which
allows us to then make judgements about what the ASM will do.

Reviewed By: jdoerfert

Differential Revision: https://reviews.llvm.org/D110655
2021-09-29 16:08:21 -04:00

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// RUN: %clang_cc1 -verify -fopenmp -x c++ -emit-llvm %s -fexceptions -fcxx-exceptions -triple x86_64-unknown-unknown -o - | FileCheck %s
// RUN: %clang_cc1 -verify -fopenmp -ast-print %s | FileCheck %s --check-prefix=AST
// RUN: %clang_cc1 -fopenmp -x c++ -std=c++11 -triple x86_64-unknown-unknown -fexceptions -fcxx-exceptions -emit-pch -verify -o %t %s
// RUN: %clang_cc1 -fopenmp -x c++ -triple x86_64-unknown-unknown -fexceptions -fcxx-exceptions -std=c++11 -include-pch %t -verify=pch %s -emit-llvm -o - | FileCheck %s
// RUN: %clang_cc1 -verify -triple x86_64-apple-darwin10 -fopenmp -fexceptions -fcxx-exceptions -debug-info-kind=line-tables-only -x c++ -emit-llvm %s -o - | FileCheck %s
// RUN: %clang_cc1 -verify -fopenmp -fopenmp-enable-irbuilder -x c++ -emit-llvm %s -fexceptions -fcxx-exceptions -triple x86_64-unknown-unknown -o - | FileCheck %s
// RUN: %clang_cc1 -fopenmp -fopenmp-enable-irbuilder -x c++ -std=c++11 -triple x86_64-unknown-unknown -fexceptions -fcxx-exceptions -emit-pch -verify -o %t %s
// RUN: %clang_cc1 -fopenmp -fopenmp-enable-irbuilder -x c++ -triple x86_64-unknown-unknown -fexceptions -fcxx-exceptions -std=c++11 -include-pch %t -verify=pch %s -emit-llvm -o - | FileCheck %s
// pch-no-diagnostics
#ifndef HEADER
#define HEADER
void foo() {
}
#pragma omp assumes no_openmp_routines warning ext_another_warning(1) ext_after_invalid_clauses // expected-warning {{valid assumes clauses start with 'ext_', 'absent', 'contains', 'holds', 'no_openmp', 'no_openmp_routines', 'no_parallelism'; token will be ignored}} expected-warning {{'ext_another_warning' clause should not be followed by arguments; tokens will be ignored}} expected-note {{the ignored tokens spans until here}}
#pragma omp assumes no_openmp
#pragma omp begin assumes ext_range_bar_only
#pragma omp begin assumes ext_range_bar_only_2
class BAR {
public:
BAR() {}
void bar1() {
}
static void bar2() {
}
};
void bar() { BAR b; }
#pragma omp end assumes
#pragma omp end assumes
#pragma omp begin assumes ext_not_seen
#pragma omp end assumes
#pragma omp begin assumes ext_1234
void baz();
template<typename T>
class BAZ {
public:
BAZ() {}
void baz1() {
}
static void baz2() {
}
};
void baz() { BAZ<float> b; }
#pragma omp end assumes
#pragma omp begin assumes ext_lambda_assumption
int lambda_outer() {
auto lambda_inner = []() { return 42; };
return lambda_inner();
}
#pragma omp end assumes
void no_assume() {
foo();
}
#pragma omp begin assumes ext_call_site
void assume() {
foo();
}
void assembly() {
asm ("nop");
}
#pragma omp end assumes ext_call_site
// AST: void foo() __attribute__((assume("omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses"))) __attribute__((assume("omp_no_openmp"))) {
// AST-NEXT: }
// AST-NEXT: class BAR {
// AST-NEXT: public:
// AST-NEXT: BAR() __attribute__((assume("ompx_range_bar_only"))) __attribute__((assume("ompx_range_bar_only_2"))) __attribute__((assume("omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses"))) __attribute__((assume("omp_no_openmp"))) {
// AST-NEXT: }
// AST-NEXT: void bar1() __attribute__((assume("ompx_range_bar_only"))) __attribute__((assume("ompx_range_bar_only_2"))) __attribute__((assume("omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses"))) __attribute__((assume("omp_no_openmp"))) {
// AST-NEXT: }
// AST-NEXT: static void bar2() __attribute__((assume("ompx_range_bar_only"))) __attribute__((assume("ompx_range_bar_only_2"))) __attribute__((assume("omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses"))) __attribute__((assume("omp_no_openmp"))) {
// AST-NEXT: }
// AST-NEXT: };
// AST-NEXT: void bar() __attribute__((assume("ompx_range_bar_only"))) __attribute__((assume("ompx_range_bar_only_2"))) __attribute__((assume("omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses"))) __attribute__((assume("omp_no_openmp"))) {
// AST-NEXT: BAR b;
// AST-NEXT: }
// AST-NEXT: void baz() __attribute__((assume("ompx_1234"))) __attribute__((assume("omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses"))) __attribute__((assume("omp_no_openmp")));
// AST-NEXT: template <typename T> class BAZ {
// AST-NEXT: public:
// AST-NEXT: BAZ<T>() __attribute__((assume("ompx_1234"))) __attribute__((assume("omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses"))) __attribute__((assume("omp_no_openmp"))) {
// AST-NEXT: }
// AST-NEXT: void baz1() __attribute__((assume("ompx_1234"))) __attribute__((assume("omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses"))) __attribute__((assume("omp_no_openmp"))) {
// AST-NEXT: }
// AST-NEXT: static void baz2() __attribute__((assume("ompx_1234"))) __attribute__((assume("omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses"))) __attribute__((assume("omp_no_openmp"))) {
// AST-NEXT: }
// AST-NEXT: };
// AST-NEXT: template<> class BAZ<float> {
// AST-NEXT: public:
// AST-NEXT: BAZ() __attribute__((assume("ompx_1234"))) __attribute__((assume("omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses"))) __attribute__((assume("omp_no_openmp"))) __attribute__((assume("omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses"))) __attribute__((assume("omp_no_openmp"))) {
// AST-NEXT: }
// AST-NEXT: void baz1() __attribute__((assume("ompx_1234"))) __attribute__((assume("omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses"))) __attribute__((assume("omp_no_openmp"))) __attribute__((assume("omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses"))) __attribute__((assume("omp_no_openmp")));
// AST-NEXT: static void baz2() __attribute__((assume("ompx_1234"))) __attribute__((assume("omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses"))) __attribute__((assume("omp_no_openmp"))) __attribute__((assume("omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses"))) __attribute__((assume("omp_no_openmp")));
// AST-NEXT: };
// AST-NEXT: void baz() __attribute__((assume("ompx_1234"))) __attribute__((assume("omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses"))) __attribute__((assume("omp_no_openmp"))) {
// AST-NEXT: BAZ<float> b;
// AST-NEXT: }
// AST-NEXT: int lambda_outer() __attribute__((assume("ompx_lambda_assumption"))) __attribute__((assume("omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses"))) __attribute__((assume("omp_no_openmp"))) {
// AST-NEXT: auto lambda_inner = []() {
// AST-NEXT: return 42;
// AST-NEXT: };
// AST-NEXT: return lambda_inner();
// AST-NEXT: }
#endif
// CHECK: define{{.*}} void @_Z3foov()
// CHECK-SAME: [[attr0:#[0-9]]]
// CHECK: define{{.*}} void @_Z3barv()
// CHECK-SAME: [[attr1:#[0-9]]]
// CHECK: call{{.*}} @_ZN3BARC1Ev(%class.BAR*{{.*}} %b)
// CHECK-SAME: [[attr10:#[0-9]]]
// CHECK: define{{.*}} void @_ZN3BARC1Ev(%class.BAR*{{.*}} %this)
// CHECK-SAME: [[attr2:#[0-9]]]
// CHECK: call{{.*}} @_ZN3BARC2Ev(%class.BAR*{{.*}} %this1)
// CHECK-SAME: [[attr10]]
// CHECK: define{{.*}} void @_ZN3BARC2Ev(%class.BAR*{{.*}} %this)
// CHECK-SAME: [[attr3:#[0-9]]]
// CHECK: define{{.*}} void @_Z3bazv()
// CHECK-SAME: [[attr4:#[0-9]]]
// CHECK: call{{.*}} @_ZN3BAZIfEC1Ev(%class.BAZ*{{.*}} %b)
// CHECK-SAME: [[attr11:#[0-9]]]
// CHECK: define{{.*}} void @_ZN3BAZIfEC1Ev(%class.BAZ*{{.*}} %this)
// CHECK-SAME: [[attr5:#[0-9]]]
// CHECK: call{{.*}} @_ZN3BAZIfEC2Ev(%class.BAZ*{{.*}} %this1)
// CHECK-SAME: [[attr12:#[0-9]]]
// CHECK: define{{.*}} void @_ZN3BAZIfEC2Ev(%class.BAZ*{{.*}} %this)
// CHECK-SAME: [[attr6:#[0-9]]]
// CHECK: define{{.*}} i32 @_Z12lambda_outerv()
// CHECK-SAME: [[attr7:#[0-9]]]
// CHECK: call{{.*}} @"_ZZ12lambda_outervENK3$_0clEv"
// CHECK-SAME: [[attr13:#[0-9]]]
// CHECK: define{{.*}} i32 @"_ZZ12lambda_outervENK3$_0clEv"(%class.anon*{{.*}} %this)
// CHECK-SAME: [[attr8:#[0-9]]]
// CHECK: define{{.*}} void @_Z9no_assumev()
// CHECK-SAME: [[attr0:#[0-9]]]
// CHECK: call{{.*}} @_Z3foov()
// CHECK-SAME: [[attr14:#[0-9]]]
// CHECK: define{{.*}} void @_Z6assumev()
// CHECK-SAME: [[attr9:#[0-9]]]
// CHECK: call{{.*}} @_Z3foov()
// CHECK-SAME: [[attr15:#[0-9]]]
// CHECK: define{{.*}} void @_Z8assemblyv()
// CHECK-SAME: [[attr9:#[0-9]]]
// CHECK: call{{.*}} void asm sideeffect "nop", "~{dirflag},~{fpsr},~{flags}"()
// CHECK-SAME: [[attr16:#[0-9]]]
// CHECK: attributes [[attr0]]
// CHECK-SAME: "llvm.assume"="omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses,omp_no_openmp"
// CHECK: attributes [[attr1]]
// CHECK-SAME: "llvm.assume"="ompx_range_bar_only,ompx_range_bar_only_2,omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses,omp_no_openmp"
// CHECK: attributes [[attr2]]
// CHECK-SAME: "llvm.assume"="ompx_range_bar_only,ompx_range_bar_only_2,omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses,omp_no_openmp"
// CHECK: attributes [[attr3]]
// CHECK-SAME: "llvm.assume"="ompx_range_bar_only,ompx_range_bar_only_2,omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses,omp_no_openmp"
// CHECK: attributes [[attr4]]
// CHECK-SAME: "llvm.assume"="ompx_1234,omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses,omp_no_openmp,ompx_1234,omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses,omp_no_openmp"
// CHECK: attributes [[attr5]]
// CHECK-SAME: "llvm.assume"="ompx_1234,omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses,omp_no_openmp,omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses,omp_no_openmp"
// CHECK: attributes [[attr6]]
// CHECK-SAME: "llvm.assume"="ompx_1234,omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses,omp_no_openmp,omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses,omp_no_openmp"
// CHECK: attributes [[attr7]]
// CHECK-SAME: "llvm.assume"="ompx_lambda_assumption,omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses,omp_no_openmp"
// CHECK: attributes [[attr8]]
// CHECK-SAME: "llvm.assume"="ompx_lambda_assumption,omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses,omp_no_openmp"
// CHECK: attributes [[attr9]]
// CHECK-SAME: "llvm.assume"="ompx_call_site,omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses,omp_no_openmp"
// CHECK: attributes [[attr10]]
// CHECK-SAME: "llvm.assume"="ompx_range_bar_only,ompx_range_bar_only_2,omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses,omp_no_openmp,ompx_range_bar_only,ompx_range_bar_only_2,omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses,omp_no_openmp"
// CHECK: attributes [[attr11]]
// CHECK-SAME: "llvm.assume"="ompx_1234,omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses,omp_no_openmp,omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses,omp_no_openmp,ompx_1234,omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses,omp_no_openmp,ompx_1234,omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses,omp_no_openmp"
// CHECK: attributes [[attr12]]
// CHECK-SAME: "llvm.assume"="ompx_1234,omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses,omp_no_openmp,omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses,omp_no_openmp,ompx_1234,omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses,omp_no_openmp,omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses,omp_no_openmp"
// CHECK: attributes [[attr13]]
// CHECK-SAME: "llvm.assume"="ompx_lambda_assumption,omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses,omp_no_openmp,ompx_lambda_assumption,omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses,omp_no_openmp"
// CHECK: attributes [[attr14]]
// CHECK-SAME: "llvm.assume"="omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses,omp_no_openmp,omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses,omp_no_openmp"
// CHECK: attributes [[attr15]]
// CHECK-SAME: "llvm.assume"="omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses,omp_no_openmp,ompx_call_site,omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses,omp_no_openmp"
// CHECK: attributes [[attr16]]
// CHECK-SAME: "llvm.assume"="ompx_call_site,omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses,omp_no_openmp"
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