From: Andrew Pinski <apin...@marvell.com>
The problem here is __builtin_shuffle when called with two arguments
instead of 1, uses a SAVE_EXPR to put in for the 1st and 2nd operand
of VEC_PERM_EXPR and when we go and gimplify the SAVE_EXPR, the type
is now error_mark_node and that fails hard.
This fixes the problem by adding a simple check for type of operand
of SAVE_EXPR not to be error_mark_node.
OK? Bootstrapped and tested on aarch64-linux-gnu with no regressions.
gcc/ChangeLog:
PR c/94726
* gimplify.c (gimplify_save_expr): Return early
if the type of val is error_mark_node.
gcc/testsuite/ChangeLog:
PR c/94726
* gcc.dg/pr94726.c: New test.
---
gcc/gimplify.c | 3 +++
gcc/testsuite/gcc.dg/pr94726.c | 11 +++++++++++
2 files changed, 14 insertions(+)
create mode 100644 gcc/testsuite/gcc.dg/pr94726.c
diff --git a/gcc/gimplify.c b/gcc/gimplify.c
index 9163dcda438..943c5cb8f2d 100644
--- a/gcc/gimplify.c
+++ b/gcc/gimplify.c
@@ -6232,6 +6232,9 @@ gimplify_save_expr (tree *expr_p, gimple_seq *pre_p,
gimple_seq *post_p)
gcc_assert (TREE_CODE (*expr_p) == SAVE_EXPR);
val = TREE_OPERAND (*expr_p, 0);
+ if (TREE_TYPE (val) == error_mark_node)
+ return GS_ERROR;
+
/* If the SAVE_EXPR has not been resolved, then evaluate it once. */
if (!SAVE_EXPR_RESOLVED_P (*expr_p))
{
diff --git a/gcc/testsuite/gcc.dg/pr94726.c b/gcc/testsuite/gcc.dg/pr94726.c
new file mode 100644
index 00000000000..d6911a644a4
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr94726.c
@@ -0,0 +1,11 @@
+/* { dg-do compile } */
+/* { dg-options "-O2" } */
+typedef unsigned int type __attribute__ ( ( vector_size ( 2*sizeof(int) ) ) )
;
+type a , b;
+/* { dg-message "note: previous declaration" "previous declaration" { target
*-*-* } .-1 } */
+void foo ( void ) {
+ type var = { 2 , 2 } ;
+ b = __builtin_shuffle ( a , var ) ;
+}
+
+void * a [ ] = { } ; /* { dg-error "conflicting types" } */
--
2.17.1
