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clang-p2996/clang/test/OpenMP/declare_reduction_codegen.cpp
Chandler Carruth 93786da2cb Make '-disable-llvm-optzns' an alias for '-disable-llvm-passes'. 
Much to my surprise, '-disable-llvm-optzns' which I thought was the
magical flag I wanted to get at the raw LLVM IR coming out of Clang
deosn't do that. It still runs some passes over the IR. I don't want
that, I really want the *raw* IR coming out of Clang and I strongly
suspect everyone else using it is in the same camp.

There is actually a flag that does what I want that I didn't know about
called '-disable-llvm-passes'. I suspect many others don't know about it
either. It both does what I want and is much simpler.

This removes the confusing version and makes that spelling of the flag
an alias for '-disable-llvm-passes'. I've also moved everything in Clang
to use the 'passes' spelling as it seems both more accurate (*all* LLVM
passes are disabled, not just optimizations) and much easier to remember
and spell correctly.

This is part of simplifying how Clang drives LLVM to make it cleaner to
wire up to the new pass manager.

Differential Revision: https://reviews.llvm.org/D28047

llvm-svn: 290392
2016-12-23 00:23:01 +00:00

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// RUN: %clang_cc1 -verify -fopenmp -x c++ -emit-llvm %s -triple %itanium_abi_triple -fexceptions -fcxx-exceptions -o - -femit-all-decls -disable-llvm-passes | FileCheck %s
// RUN: %clang_cc1 -fopenmp -x c++ -std=c++11 -triple %itanium_abi_triple -fexceptions -fcxx-exceptions -emit-pch -o %t %s -femit-all-decls -disable-llvm-passes
// RUN: %clang_cc1 -fopenmp -x c++ -triple %itanium_abi_triple -fexceptions -fcxx-exceptions -std=c++11 -include-pch %t -verify %s -emit-llvm -o - -femit-all-decls -disable-llvm-passes | FileCheck --check-prefix=CHECK-LOAD %s
// expected-no-diagnostics
#ifndef HEADER
#define HEADER
// CHECK: [[SSS_INT:.+]] = type { i32 }
// CHECK-LOAD: [[SSS_INT:.+]] = type { i32 }
#pragma omp declare reduction(+ : int, char : omp_out *= omp_in)
// CHECK: define internal {{.*}}void @{{[^(]+}}(i32* noalias, i32* noalias)
// CHECK: [[MUL:%.+]] = mul nsw i32
// CHECK-NEXT: store i32 [[MUL]], i32*
// CHECK-NEXT: ret void
// CHECK-NEXT: }
// CHECK-LOAD: define internal {{.*}}void @{{[^(]+}}(i32* noalias, i32* noalias)
// CHECK-LOAD: [[MUL:%.+]] = mul nsw i32
// CHECK-LOAD-NEXT: store i32 [[MUL]], i32*
// CHECK-LOAD-NEXT: ret void
// CHECK-LOAD-NEXT: }
// CHECK: define internal {{.*}}void @{{[^(]+}}(i8* noalias, i8* noalias)
// CHECK: sext i8
// CHECK: sext i8
// CHECK: [[MUL:%.+]] = mul nsw i32
// CHECK-NEXT: [[TRUNC:%.+]] = trunc i32 [[MUL]] to i8
// CHECK-NEXT: store i8 [[TRUNC]], i8*
// CHECK-NEXT: ret void
// CHECK-NEXT: }
// CHECK-LOAD: define internal {{.*}}void @{{[^(]+}}(i8* noalias, i8* noalias)
// CHECK-LOAD: sext i8
// CHECK-LOAD: sext i8
// CHECK-LOAD: [[MUL:%.+]] = mul nsw i32
// CHECK-LOAD-NEXT: [[TRUNC:%.+]] = trunc i32 [[MUL]] to i8
// CHECK-LOAD-NEXT: store i8 [[TRUNC]], i8*
// CHECK-LOAD-NEXT: ret void
// CHECK-LOAD-NEXT: }
template <class T>
struct SSS {
T a;
SSS() : a() {}
#pragma omp declare reduction(fun : T : omp_out ^= omp_in) initializer(omp_priv = 24 + omp_orig)
};
SSS<int> d;
// CHECK: define internal {{.*}}void @{{[^(]+}}(i32* noalias, i32* noalias)
// CHECK: [[XOR:%.+]] = xor i32
// CHECK-NEXT: store i32 [[XOR]], i32*
// CHECK-NEXT: ret void
// CHECK-NEXT: }
// CHECK: define internal {{.*}}void @{{[^(]+}}(i32* noalias, i32* noalias)
// CHECK: [[ADD:%.+]] = add nsw i32 24,
// CHECK-NEXT: store i32 [[ADD]], i32*
// CHECK-NEXT: ret void
// CHECK-NEXT: }
// CHECK: define {{.*}}void [[INIT:@[^(]+]]([[SSS_INT]]*
// CHECK-LOAD: define {{.*}}void [[INIT:@[^(]+]]([[SSS_INT]]*
void init(SSS<int> &lhs, SSS<int> &rhs) {}
#pragma omp declare reduction(fun : SSS < int > : omp_out = omp_in) initializer(init(omp_priv, omp_orig))
// CHECK: define internal {{.*}}void @{{[^(]+}}([[SSS_INT]]* noalias, [[SSS_INT]]* noalias)
// CHECK: call void @llvm.memcpy
// CHECK-NEXT: ret void
// CHECK-NEXT: }
// CHECK: define internal {{.*}}void @{{[^(]+}}([[SSS_INT]]* noalias, [[SSS_INT]]* noalias)
// CHECK: call {{.*}}void [[INIT]](
// CHECK-NEXT: ret void
// CHECK-NEXT: }
// CHECK-LOAD: define internal {{.*}}void @{{[^(]+}}([[SSS_INT]]* noalias, [[SSS_INT]]* noalias)
// CHECK-LOAD: call void @llvm.memcpy
// CHECK-LOAD-NEXT: ret void
// CHECK-LOAD-NEXT: }
// CHECK-LOAD: define internal {{.*}}void @{{[^(]+}}([[SSS_INT]]* noalias, [[SSS_INT]]* noalias)
// CHECK-LOAD: call {{.*}}void [[INIT]](
// CHECK-LOAD-NEXT: ret void
// CHECK-LOAD-NEXT: }
template <typename T>
T foo(T a) {
#pragma omp declare reduction(fun : T : omp_out += omp_in) initializer(omp_priv = 15 * omp_orig)
{
#pragma omp declare reduction(fun : T : omp_out /= omp_in) initializer(omp_priv = 11 - omp_orig)
}
return a;
}
// CHECK-LABEL: @main
int main() {
int i = 0;
SSS<int> sss;
#pragma omp parallel reduction(SSS < int > ::fun : i)
{
i += 1;
}
#pragma omp parallel reduction(::fun : sss)
{
}
#pragma omp declare reduction(fun : SSS < int > : init(omp_out, omp_in))
#pragma omp parallel reduction(fun : sss)
{
}
// CHECK: call {{.*}}void (%ident_t*, i32, void (i32*, i32*, ...)*, ...) @__kmpc_fork_call(
// CHECK: call {{.*}}void (%ident_t*, i32, void (i32*, i32*, ...)*, ...) @__kmpc_fork_call(
// CHECK: call {{.*}}void (%ident_t*, i32, void (i32*, i32*, ...)*, ...) @__kmpc_fork_call({{[^@]*}} @{{[^@]*}}[[REGION:@[^ ]+]]
// CHECK-LABEL: foo
return foo(15);
}
// CHECK: define internal {{.*}}void [[REGION]](
// CHECK: [[SSS_PRIV:%.+]] = alloca %struct.SSS,
// CHECK: invoke {{.*}} @_ZN3SSSIiEC1Ev(%struct.SSS* [[SSS_PRIV]])
// CHECK-NOT: {{call |invoke }}
// CHECK: call {{.*}}i32 @__kmpc_reduce_nowait(
// CHECK-LABEL: i32 @{{.+}}foo{{[^(].+}}(i32
// CHECK-LOAD-LABEL: i32 @{{.+}}foo{{[^(].+}}(i32
// CHECK-LOAD: define internal {{.*}}void @{{[^(]+}}(i32* noalias, i32* noalias)
// CHECK-LOAD: [[XOR:%.+]] = xor i32
// CHECK-LOAD-NEXT: store i32 [[XOR]], i32*
// CHECK-LOAD-NEXT: ret void
// CHECK-LOAD-NEXT: }
// CHECK-LOAD: define internal {{.*}}void @{{[^(]+}}(i32* noalias, i32* noalias)
// CHECK-LOAD: [[ADD:%.+]] = add nsw i32 24,
// CHECK-LOAD-NEXT: store i32 [[ADD]], i32*
// CHECK-LOAD-NEXT: ret void
// CHECK-LOAD-NEXT: }
// CHECK: define internal {{.*}}void @{{[^(]+}}(i32* noalias, i32* noalias)
// CHECK: [[ADD:%.+]] = add nsw i32
// CHECK-NEXT: store i32 [[ADD]], i32*
// CHECK-NEXT: ret void
// CHECK-NEXT: }
// CHECK-LOAD: define internal {{.*}}void @{{[^(]+}}(i32* noalias, i32* noalias)
// CHECK-LOAD: [[ADD:%.+]] = add nsw i32
// CHECK-LOAD-NEXT: store i32 [[ADD]], i32*
// CHECK-LOAD-NEXT: ret void
// CHECK-LOAD-NEXT: }
// CHECK: define internal {{.*}}void @{{[^(]+}}(i32* noalias, i32* noalias)
// CHECK: [[MUL:%.+]] = mul nsw i32 15,
// CHECK-NEXT: store i32 [[MUL]], i32*
// CHECK-NEXT: ret void
// CHECK-NEXT: }
// CHECK-LOAD: define internal {{.*}}void @{{[^(]+}}(i32* noalias, i32* noalias)
// CHECK-LOAD: [[MUL:%.+]] = mul nsw i32 15,
// CHECK-LOAD-NEXT: store i32 [[MUL]], i32*
// CHECK-LOAD-NEXT: ret void
// CHECK-LOAD-NEXT: }
// CHECK: define internal {{.*}}void @{{[^(]+}}(i32* noalias, i32* noalias)
// CHECK: [[DIV:%.+]] = sdiv i32
// CHECK-NEXT: store i32 [[DIV]], i32*
// CHECK-NEXT: ret void
// CHECK-NEXT: }
// CHECK-LOAD: define internal {{.*}}void @{{[^(]+}}(i32* noalias, i32* noalias)
// CHECK-LOAD: [[DIV:%.+]] = sdiv i32
// CHECK-LOAD-NEXT: store i32 [[DIV]], i32*
// CHECK-LOAD-NEXT: ret void
// CHECK-LOAD-NEXT: }
// CHECK: define internal {{.*}}void @{{[^(]+}}(i32* noalias, i32* noalias)
// CHECK: [[SUB:%.+]] = sub nsw i32 11,
// CHECK-NEXT: store i32 [[SUB]], i32*
// CHECK-NEXT: ret void
// CHECK-NEXT: }
// CHECK-LOAD: define internal {{.*}}void @{{[^(]+}}(i32* noalias, i32* noalias)
// CHECK-LOAD: [[SUB:%.+]] = sub nsw i32 11,
// CHECK-LOAD-NEXT: store i32 [[SUB]], i32*
// CHECK-LOAD-NEXT: ret void
// CHECK-LOAD-NEXT: }
#endif
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