c23b4fbdbb
Now that #149310 has restricted lifetime intrinsics to only work on allocas, we can also drop the explicit size argument. Instead, the size is implied by the alloca. This removes the ability to only mark a prefix of an alloca alive/dead. We never used that capability, so we should remove the need to handle that possibility everywhere (though many key places, including stack coloring, did not actually respect this).
The tests in this directory check that basic KernelInfoPrinter functionality behaves reasonably for LLVM IR produced by Clang OpenMP codegen.
So that these tests are straightforward to maintain and faithfully represent Clang OpenMP codegen, do not tweak or reduce the LLVM IR in them. Other tests more exhaustively check KernelInfoPrinter features using reduced LLVM IR.
The LLVM IR in each test file $TEST can be regenerated as follows in the case
that Clang OpenMP codegen changes or it becomes desirable to adjust the source
OpenMP program below. First, remove the existing LLVM IR from $TEST. Then,
where $TARGET (e.g., nvptx64-nvidia-cuda-sm_70 or amdgcn-amd-amdhsa-gfx906)
depends on $TEST:
$ cd /tmp
$ cat test.c
#pragma omp declare target
void f();
void g() {
int i;
int a[2];
f();
g();
}
#pragma omp end declare target
void h(int i) {
#pragma omp target map(tofrom:i)
{
int i;
int a[2];
f();
g();
}
}
$ clang -g -fopenmp --offload-arch=native -save-temps -c test.c
$ llvm-dis test-openmp-$TARGET.bc
$ cat test-openmp-$TARGET.ll >> $TEST