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* [gcc r12-5698] middle-end: Skip initialization of opaque type variables [PR103127]
@ 2021-12-01 19:22 Peter Bergner
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From: Peter Bergner @ 2021-12-01 19:22 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:5b1ef8b9db964ec2375df29a73d2b1651afe7ea9
commit r12-5698-g5b1ef8b9db964ec2375df29a73d2b1651afe7ea9
Author: Peter Bergner <bergner@linux.ibm.com>
Date: Wed Dec 1 13:17:52 2021 -0600
middle-end: Skip initialization of opaque type variables [PR103127]
For -ftrivial-auto-var-init=*, skip initializing the variable if it is an
opaque type, because CONST0_RTX(mode) is not defined for opaque modes.
2021-12-01 Peter Bergner <bergner@linux.ibm.com>
gcc/
PR middle-end/103127
* gimplify.c (is_var_need_auto_init): Handle opaque types.
gcc/testsuite/
PR middle-end/103127
* gcc.target/powerpc/pr103127.c: New test.
Diff:
---
gcc/gimplify.c | 1 +
gcc/testsuite/gcc.target/powerpc/pr103127.c | 19 +++++++++++++++++++
2 files changed, 20 insertions(+)
diff --git a/gcc/gimplify.c b/gcc/gimplify.c
index 8624f8221fd..326476f0238 100644
--- a/gcc/gimplify.c
+++ b/gcc/gimplify.c
@@ -1829,6 +1829,7 @@ is_var_need_auto_init (tree decl)
|| !DECL_HARD_REGISTER (decl))
&& (flag_auto_var_init > AUTO_INIT_UNINITIALIZED)
&& (!lookup_attribute ("uninitialized", DECL_ATTRIBUTES (decl)))
+ && !OPAQUE_TYPE_P (TREE_TYPE (decl))
&& !is_empty_type (TREE_TYPE (decl)))
return true;
return false;
diff --git a/gcc/testsuite/gcc.target/powerpc/pr103127.c b/gcc/testsuite/gcc.target/powerpc/pr103127.c
new file mode 100644
index 00000000000..801fc0a4620
--- /dev/null
+++ b/gcc/testsuite/gcc.target/powerpc/pr103127.c
@@ -0,0 +1,19 @@
+/* PR target/103127 */
+/* { dg-require-effective-target power10_ok } */
+/* { dg-options "-O2 -mdejagnu-cpu=power10 -ftrivial-auto-var-init=zero" } */
+
+/* Verify we do not ICE on the following tests. */
+
+void
+foo (__vector_quad *dst)
+{
+ __vector_quad acc;
+ *dst = acc;
+}
+
+void
+bar (__vector_pair *dst)
+{
+ __vector_pair pair;
+ *dst = pair;
+}
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