Hi!
On 2015-08-21T15:31:06-0400, Nathan Sidwell <nat...@acm.org> wrote:
> 1) alloca. PTX defines but doesn't implement support. and if one passes
> types
> suitable for a 64-bit ABI ptxas emits errors. This patch gives a clear error
> at
> compilation time, rather than an obscure failure later.
> --- config/nvptx/nvptx.md (revision 227059)
> +++ config/nvptx/nvptx.md (working copy)
> @@ -1241,6 +1241,12 @@
> (match_operand 1 "nvptx_register_operand")]
> ""
> {
> + /* The ptx documentation specifies an alloca intrinsic (for 32 bit
> + only) but notes it is not implemented. The assembler emits a
> + confused error message. Issue a blunt one now instead. */
> + sorry ("target cannot support alloca.");
> + emit_insn (gen_nop ());
> + DONE;
Pushed to trunk branch commit aae1db742a1766365c0c7023be55ebef67b70bf4
"nvptx: Add 'sorry, unimplemented: target cannot support alloca' test cases
[PR65181]",
see attached.
Grüße
Thomas
>From aae1db742a1766365c0c7023be55ebef67b70bf4 Mon Sep 17 00:00:00 2001
From: Thomas Schwinge <tschwi...@baylibre.com>
Date: Wed, 11 Dec 2024 15:22:06 +0100
Subject: [PATCH] nvptx: Add 'sorry, unimplemented: target cannot support
alloca' test cases [PR65181]
Documenting the status quo.
PR target/65181
gcc/testsuite/
* gcc.target/nvptx/alloca-1.c: New.
* gcc.target/nvptx/vla-1.c: Likewise.
---
gcc/testsuite/gcc.target/nvptx/alloca-1.c | 10 ++++++++++
gcc/testsuite/gcc.target/nvptx/vla-1.c | 11 +++++++++++
2 files changed, 21 insertions(+)
create mode 100644 gcc/testsuite/gcc.target/nvptx/alloca-1.c
create mode 100644 gcc/testsuite/gcc.target/nvptx/vla-1.c
diff --git a/gcc/testsuite/gcc.target/nvptx/alloca-1.c b/gcc/testsuite/gcc.target/nvptx/alloca-1.c
new file mode 100644
index 000000000000..0aa6f107b526
--- /dev/null
+++ b/gcc/testsuite/gcc.target/nvptx/alloca-1.c
@@ -0,0 +1,10 @@
+/* { dg-do compile } */
+/* { dg-options -mno-soft-stack } */
+
+void sink(void *);
+
+void f(void)
+{
+ sink(__builtin_alloca(123));
+ /* { dg-message {sorry, unimplemented: target cannot support alloca} {} { target *-*-* } .-1 } */
+}
diff --git a/gcc/testsuite/gcc.target/nvptx/vla-1.c b/gcc/testsuite/gcc.target/nvptx/vla-1.c
new file mode 100644
index 000000000000..5baf95cecfcc
--- /dev/null
+++ b/gcc/testsuite/gcc.target/nvptx/vla-1.c
@@ -0,0 +1,11 @@
+/* { dg-do compile } */
+/* { dg-options -mno-soft-stack } */
+
+void sink(void *);
+
+void f(int s)
+{
+ char a[s];
+ /* { dg-message {sorry, unimplemented: target cannot support alloca} {} { target *-*-* } .-1 } */
+ sink(a);
+}
--
2.34.1
