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re PR rtl-optimization/77919 (ICE converting DC to V2DF mode) 

PR rtl-optimization/77919
	* expr.c (expand_expr_real_1) <normal_inner_ref>: Force CONCAT into
	MEM if mode1 is not a complex mode.

	* g++.dg/torture/pr77919.C: New test.

From-SVN: r241642
This commit is contained in:
Jakub Jelinek 2016-10-28 10:11:57 +02:00 committed by Jakub Jelinek
parent 0d9e143c62
commit c19066a769
4 changed files with 20 additions and 1 deletions
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4
gcc/ChangeLog
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@ -1,5 +1,9 @@
2016-10-28 Jakub Jelinek <jakub@redhat.com>
PR rtl-optimization/77919
* expr.c (expand_expr_real_1) <normal_inner_ref>: Force CONCAT into
MEM if mode1 is not a complex mode.
PR rtl-optimization/78132
* ree.c (combine_reaching_defs): Give up if copy_needed and
!HARD_REGNO_MODE_OK (REGNO (src_reg), dst_mode).

3
gcc/expr.c
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@ -10421,7 +10421,8 @@ expand_expr_real_1 (tree exp, rtx target, machine_mode tmode,
if (GET_CODE (op0) == CONCAT && !must_force_mem)
{
if (bitpos == 0
&& bitsize == GET_MODE_BITSIZE (GET_MODE (op0)))
&& bitsize == GET_MODE_BITSIZE (GET_MODE (op0))
&& COMPLEX_MODE_P (mode1))
{
if (reversep)
op0 = flip_storage_order (GET_MODE (op0), op0);

3
gcc/testsuite/ChangeLog
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@ -1,5 +1,8 @@
2016-10-28 Jakub Jelinek <jakub@redhat.com>
PR rtl-optimization/77919
* g++.dg/torture/pr77919.C: New test.
PR rtl-optimization/78132
* gcc.target/i386/pr78132.c: New test.

11
gcc/testsuite/g++.dg/torture/pr77919.C Normal file
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@ -0,0 +1,11 @@
// PR rtl-optimization/77919
// { dg-do compile }
// { dg-additional-options "-Wno-psabi" }
struct A { A (double) {} _Complex double i; };
typedef int __attribute__ ((vector_size (16))) B;
typedef struct { B b; } C;
struct D { D (const B &x) : b (x) {} B b; };
static inline B foo (const double *x) { C *a; a = (C *) x; return a->b; }
static inline D baz (const A &x) { return foo ((double *) &x); }
D b = baz (0);