From 8fec4d222f0a35925bfdc4641612120b06d51c59 Mon Sep 17 00:00:00 2001
From: Jakub Jelinek <jakub@redhat.com>
Date: Sat, 6 Jan 2018 08:47:32 +0100
Subject: [PATCH] re PR rtl-optimization/83682 (ICE in simplify_subreg, at simplify-rtx.c:6296)
PR rtl-optimization/83682
* rtl.h (const_vec_duplicate_p): Only return true for VEC_DUPLICATE
if it has non-VECTOR_MODE element mode.
(vec_duplicate_p): Likewise.
* gcc.target/i386/pr83682.c: New test.
From-SVN: r256308
---
gcc/ChangeLog | 5 +++++
gcc/rtl.h | 7 +++++--
gcc/testsuite/ChangeLog | 5 +++++
gcc/testsuite/gcc.target/i386/pr83682.c | 17 +++++++++++++++++
4 files changed, 32 insertions(+), 2 deletions(-)
create mode 100644 gcc/testsuite/gcc.target/i386/pr83682.c
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 51f92bc..283f792 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,10 @@
2018-01-06 Jakub Jelinek <jakub@redhat.com>
+ PR rtl-optimization/83682
+ * rtl.h (const_vec_duplicate_p): Only return true for VEC_DUPLICATE
+ if it has non-VECTOR_MODE element mode.
+ (vec_duplicate_p): Likewise.
+
PR middle-end/83694
* cfgexpand.c (expand_debug_expr): Punt if mode1 is VOIDmode
and bitsize might be greater than MAX_BITSIZE_MODE_ANY_INT.
diff --git a/gcc/rtl.h b/gcc/rtl.h
index 224dc96..71a81a2 100644
--- a/gcc/rtl.h
+++ b/gcc/rtl.h
@@ -2969,7 +2969,9 @@ const_vec_duplicate_p (T x, T *elt)
*elt = CONST_VECTOR_ENCODED_ELT (x, 0);
return true;
}
- if (GET_CODE (x) == CONST && GET_CODE (XEXP (x, 0)) == VEC_DUPLICATE)
+ if (GET_CODE (x) == CONST
+ && GET_CODE (XEXP (x, 0)) == VEC_DUPLICATE
+ && !VECTOR_MODE_P (GET_MODE (XEXP (XEXP (x, 0), 0))))
{
*elt = XEXP (XEXP (x, 0), 0);
return true;
@@ -2984,7 +2986,8 @@ template <typename T>
inline bool
vec_duplicate_p (T x, T *elt)
{
- if (GET_CODE (x) == VEC_DUPLICATE)
+ if (GET_CODE (x) == VEC_DUPLICATE
+ && !VECTOR_MODE_P (GET_MODE (XEXP (x, 0))))
{
*elt = XEXP (x, 0);
return true;
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 1d3603a..7ebe129 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2018-01-06 Jakub Jelinek <jakub@redhat.com>
+
+ PR rtl-optimization/83682
+ * gcc.target/i386/pr83682.c: New test.
+
2018-01-05 Janne Blomqvist <jb@gcc.gnu.org>
PR fortran/78534
diff --git a/gcc/testsuite/gcc.target/i386/pr83682.c b/gcc/testsuite/gcc.target/i386/pr83682.c
new file mode 100644
index 0000000..cbb61ff
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr83682.c
@@ -0,0 +1,17 @@
+/* PR rtl-optimization/83682 */
+/* { dg-do compile } */
+/* { dg-options "-O2 -msse2" } */
+
+typedef float V __attribute__((__vector_size__(16)));
+typedef double W __attribute__((__vector_size__(16)));
+V b;
+W c;
+
+void
+foo (void *p)
+{
+ V e = __builtin_ia32_cvtsd2ss (b, c);
+ V g = e;
+ float f = g[0];
+ __builtin_memcpy (p, &f, sizeof (f));
+}
--
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