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re PR middle-end/85496 (internal compiler error: in emit_move_insn, at expr.c:3722)

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PR middle-end/85496
	* expr.c (store_field): In the bitfield case, if the value comes from
	a function call and is returned in registers by means of a PARALLEL,
	do not change the mode of the temporary unless BLKmode and VOIDmode.

From-SVN: r259574
This commit is contained in:
Eric Botcazou 2018-04-23 20:19:39 +00:00
parent 53de8a7e13
commit a689171e50
4 changed files with 37 additions and 8 deletions
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14
gcc/ChangeLog
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@ -1,9 +1,15 @@
2018-04-23 Eric Botcazou <ebotcazou@adacore.com>
PR middle-end/85496
* expr.c (store_field): In the bitfield case, if the value comes from
a function call and is returned in registers by means of a PARALLEL,
do not change the mode of the temporary unless BLKmode and VOIDmode.
2018-04-23 Andrey Belevantsev <abel@ispras.ru>
PR rtl-optimization/85423
* sel-sched-ir.c (has_dependence_note_mem_dep): Only discard
dependencies to debug insns when the previous insn is non-debug.
PR rtl-optimization/85423
* sel-sched-ir.c (has_dependence_note_mem_dep): Only discard
dependencies to debug insns when the previous insn is non-debug.
2018-04-23 Claudiu Zissulescu <claziss@synopsys.com>

5
gcc/expr.c
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@ -6989,8 +6989,9 @@ store_field (rtx target, poly_int64 bitsize, poly_int64 bitpos,
if (GET_CODE (temp) == PARALLEL)
{
HOST_WIDE_INT size = int_size_in_bytes (TREE_TYPE (exp));
scalar_int_mode temp_mode
= smallest_int_mode_for_size (size * BITS_PER_UNIT);
machine_mode temp_mode = GET_MODE (temp);
if (temp_mode == BLKmode || temp_mode == VOIDmode)
temp_mode = smallest_int_mode_for_size (size * BITS_PER_UNIT);
rtx temp_target = gen_reg_rtx (temp_mode);
emit_group_store (temp_target, temp, TREE_TYPE (exp), size);
temp = temp_target;

8
gcc/testsuite/ChangeLog
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@ -1,7 +1,11 @@
2018-04-23 Eric Botcazou <ebotcazou@adacore.com>
* g++.dg/torture/pr85496.C: New test.
2018-04-23 Andrey Belevantsev <abel@ispras.ru>
PR rtl-optimization/85423
* gcc.dg/pr85423.c: New test.
PR rtl-optimization/85423
* gcc.dg/pr85423.c: New test.
2018-04-20 Martin Sebor <msebor@redhat.com>

18
gcc/testsuite/g++.dg/torture/pr85496.C Normal file
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@ -0,0 +1,18 @@
// PR middle-end/85496
// Reported by Marek Polacek <mpolacek@gcc.gnu.org>
template <typename> class complex;
template <typename _Tp> complex<_Tp> operator*(complex<_Tp>, complex<_Tp>);
template <> struct complex<float> { _Complex float _M_value; };
class A {
complex<float> _f0, _f1;
public:
complex<float> &m_fn1() { return _f1; }
};
complex<float> a;
void cos() {
A b;
complex<float> c;
b.m_fn1() = c * a;
}