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| author | Sandra Loosemore <sandra@codesourcery.com> | 2022-11-15 03:40:12 +0000 |
|---|---|---|
| committer | Sandra Loosemore <sandra@codesourcery.com> | 2022-11-25 18:13:22 +0000 |
| commit | 309e2d95e3b930c6f15c8a5346b913158404c76d (patch) | |
| tree | 0f205d914d696e4f3c73d5fc08fcd05b5f85b3c4 /gcc/config/gcn | |
| parent | 3de627ffe4b51b3d82acdb5fb04c189978697832 (diff) | |
| download | gcc-309e2d95e3b930c6f15c8a5346b913158404c76d.zip gcc-309e2d95e3b930c6f15c8a5346b913158404c76d.tar.gz gcc-309e2d95e3b930c6f15c8a5346b913158404c76d.tar.bz2 | |
OpenMP: Generate SIMD clones for functions with "declare target"
This patch causes the IPA simdclone pass to generate clones for
functions with the "omp declare target" attribute as if they had
"omp declare simd", provided the function appears to be suitable for
SIMD execution. The filter is conservative, rejecting functions
that write memory or that call other functions not known to be safe.
A new option -fopenmp-target-simd-clone is added to control this
transformation; it's enabled for offload processing at -O2 and higher.
gcc/ChangeLog:
* common.opt (fopenmp-target-simd-clone): New option.
(target_simd_clone_device): New enum to go with it.
* doc/invoke.texi (-fopenmp-target-simd-clone): Document.
* flag-types.h (enum omp_target_simd_clone_device_kind): New.
* omp-simd-clone.cc (auto_simd_fail): New function.
(auto_simd_check_stmt): New function.
(plausible_type_for_simd_clone): New function.
(ok_for_auto_simd_clone): New function.
(simd_clone_create): Add force_local argument, make the symbol
have internal linkage if it is true.
(expand_simd_clones): Also check for cloneable functions with
"omp declare target". Pass explicit_p argument to
simd_clone.compute_vecsize_and_simdlen target hook.
* opts.cc (default_options_table): Add -fopenmp-target-simd-clone.
* target.def (TARGET_SIMD_CLONE_COMPUTE_VECSIZE_AND_SIMDLEN):
Add bool explicit_p argument.
* doc/tm.texi: Regenerated.
* config/aarch64/aarch64.cc
(aarch64_simd_clone_compute_vecsize_and_simdlen): Update.
* config/gcn/gcn.cc
(gcn_simd_clone_compute_vecsize_and_simdlen): Update.
* config/i386/i386.cc
(ix86_simd_clone_compute_vecsize_and_simdlen): Update.
gcc/testsuite/ChangeLog:
* g++.dg/gomp/target-simd-clone-1.C: New.
* g++.dg/gomp/target-simd-clone-2.C: New.
* gcc.dg/gomp/target-simd-clone-1.c: New.
* gcc.dg/gomp/target-simd-clone-2.c: New.
* gcc.dg/gomp/target-simd-clone-3.c: New.
* gcc.dg/gomp/target-simd-clone-4.c: New.
* gcc.dg/gomp/target-simd-clone-5.c: New.
* gcc.dg/gomp/target-simd-clone-6.c: New.
* gcc.dg/gomp/target-simd-clone-7.c: New.
* gcc.dg/gomp/target-simd-clone-8.c: New.
* lib/scanoffloadipa.exp: New.
libgomp/ChangeLog:
* testsuite/lib/libgomp.exp: Load scanoffloadipa.exp library.
* testsuite/libgomp.c/target-simd-clone-1.c: New.
* testsuite/libgomp.c/target-simd-clone-2.c: New.
* testsuite/libgomp.c/target-simd-clone-3.c: New.
Diffstat (limited to 'gcc/config/gcn')
| -rw-r--r-- | gcc/config/gcn/gcn.cc | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/gcc/config/gcn/gcn.cc b/gcc/config/gcn/gcn.cc index ea9631e..6fb2613 100644 --- a/gcc/config/gcn/gcn.cc +++ b/gcc/config/gcn/gcn.cc @@ -5143,7 +5143,8 @@ static int gcn_simd_clone_compute_vecsize_and_simdlen (struct cgraph_node *ARG_UNUSED (node), struct cgraph_simd_clone *clonei, tree ARG_UNUSED (base_type), - int ARG_UNUSED (num)) + int ARG_UNUSED (num), + bool explicit_p) { if (known_eq (clonei->simdlen, 0U)) clonei->simdlen = 64; @@ -5151,9 +5152,10 @@ gcn_simd_clone_compute_vecsize_and_simdlen (struct cgraph_node *ARG_UNUSED (node { /* Note that x86 has a similar message that is likely to trigger on sizes that are OK for gcn; the user can't win. */ - warning_at (DECL_SOURCE_LOCATION (node->decl), 0, - "unsupported simdlen %wd (amdgcn)", - clonei->simdlen.to_constant ()); + if (explicit_p) + warning_at (DECL_SOURCE_LOCATION (node->decl), 0, + "unsupported simdlen %wd (amdgcn)", + clonei->simdlen.to_constant ()); return 0; } |