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* [gcc/devel/omp/gcc-12] Add 'gcc.target/nvptx/softstack-decl-1.c', 'gcc.target/nvptx/uniform-simt-decl-1.c'
@ 2023-01-20 20:25 Thomas Schwinge
0 siblings, 0 replies; only message in thread
From: Thomas Schwinge @ 2023-01-20 20:25 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:703ebfdb483fdade316ceb003a0d57ca132a090b
commit 703ebfdb483fdade316ceb003a0d57ca132a090b
Author: Thomas Schwinge <thomas@codesourcery.com>
Date: Mon Dec 19 17:10:52 2022 +0100
Add 'gcc.target/nvptx/softstack-decl-1.c', 'gcc.target/nvptx/uniform-simt-decl-1.c'
... to document the status quo re implicit (via 'need_softstack_decl',
'need_unisimt_decl') and explicit declarations of '__nvptx_stacks',
'__nvptx_uni'.
gcc/testsuite/
* gcc.target/nvptx/softstack-decl-1.c: New.
* gcc.target/nvptx/uniform-simt-decl-1.c: Likewise.
Diff:
---
gcc/testsuite/ChangeLog.omp | 3 +++
gcc/testsuite/gcc.target/nvptx/softstack-decl-1.c | 20 +++++++++++++++
.../gcc.target/nvptx/uniform-simt-decl-1.c | 29 ++++++++++++++++++++++
3 files changed, 52 insertions(+)
diff --git a/gcc/testsuite/ChangeLog.omp b/gcc/testsuite/ChangeLog.omp
index 7339bf41482..5b3d9fe416b 100644
--- a/gcc/testsuite/ChangeLog.omp
+++ b/gcc/testsuite/ChangeLog.omp
@@ -1,5 +1,8 @@
2023-01-20 Thomas Schwinge <thomas@codesourcery.com>
+ * gcc.target/nvptx/softstack-decl-1.c: New.
+ * gcc.target/nvptx/uniform-simt-decl-1.c: Likewise.
+
* gcc.target/nvptx/nvptx.exp
(check_effective_target_default_ptx_isa_version_at_least_6_0):
New.
diff --git a/gcc/testsuite/gcc.target/nvptx/softstack-decl-1.c b/gcc/testsuite/gcc.target/nvptx/softstack-decl-1.c
new file mode 100644
index 00000000000..c502eacc1b3
--- /dev/null
+++ b/gcc/testsuite/gcc.target/nvptx/softstack-decl-1.c
@@ -0,0 +1,20 @@
+/* { dg-do compile } */
+/* { dg-options {-save-temps -O0 -msoft-stack} } */
+
+extern void *__nvptx_stacks[32] __attribute__((shared,nocommon));
+
+void *f()
+{
+ /* Implicit '__nvptx_stacks' usage for frame; per 'init_softstack_frame':
+ { dg-final { scan-assembler-times {mov\.u64 %fstmp2, __nvptx_stacks;} 1 } }
+ */
+ void *stack_array[123];
+ /* Explicit '__nvptx_stacks' usage. */
+ stack_array[5] = __nvptx_stacks[0];
+ return stack_array[5];
+}
+
+/* The implicit (via 'need_softstack_decl') and explicit declarations of
+ '__nvptx_stacks' are both emitted:
+ { dg-final { scan-assembler-times {(?n)\.extern .* __nvptx_stacks\[32\];} 2 } }
+*/
diff --git a/gcc/testsuite/gcc.target/nvptx/uniform-simt-decl-1.c b/gcc/testsuite/gcc.target/nvptx/uniform-simt-decl-1.c
new file mode 100644
index 00000000000..486456ab243
--- /dev/null
+++ b/gcc/testsuite/gcc.target/nvptx/uniform-simt-decl-1.c
@@ -0,0 +1,29 @@
+/* { dg-do compile } */
+/* { dg-options {-save-temps -O0 -muniform-simt} } */
+
+extern unsigned __nvptx_uni[32] __attribute__((shared,nocommon));
+
+enum memmodel
+{
+ MEMMODEL_RELAXED = 0,
+};
+
+int a = 0;
+
+int f (void)
+{
+ /* Explicit '__nvptx_uni' usage. */
+ __builtin_printf("%u\n", __nvptx_uni[0]);
+
+ /* Implicit '__nvptx_uni' usage; per 'nvptx_init_unisimt_predicate':
+ { dg-final { scan-assembler-times {mov\.u64 %r[0-9]+, __nvptx_uni;} 1 } }
+ */
+ int expected = 1;
+ return __atomic_compare_exchange_n (&a, &expected, 0, 0, MEMMODEL_RELAXED,
+ MEMMODEL_RELAXED);
+}
+
+/* The implicit (via 'need_unisimt_decl') and explicit declarations of
+ '__nvptx_uni' are both emitted:
+ { dg-final { scan-assembler-times {(?n)\.extern .* __nvptx_uni\[32\];} 2 } }
+*/
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2023-01-20 20:25 [gcc/devel/omp/gcc-12] Add 'gcc.target/nvptx/softstack-decl-1.c', 'gcc.target/nvptx/uniform-simt-decl-1.c' Thomas Schwinge
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