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re PR target/91472 (gmp testsuite segfaults with gcc-8 and gcc-9, works fine with gcc-7)

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PR target/91472
	* config/sparc/sparc.c (sparc_cannot_force_const_mem): Return true
	during LRA/reload in PIC mode if the PIC register hasn't been used yet.
	(sparc_pic_register_p): Test reload_in_progress for consistency's sake.

From-SVN: r275270
This commit is contained in:
Eric Botcazou 2019-09-01 12:55:22 +00:00 committed by Eric Botcazou
parent 70570ec192
commit 2dae212347
4 changed files with 55 additions and 1 deletions
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7
gcc/ChangeLog
View File

@ -1,3 +1,10 @@
2019-09-01 Eric Botcazou <ebotcazou@adacore.com>
PR target/91472
* config/sparc/sparc.c (sparc_cannot_force_const_mem): Return true
during LRA/reload in PIC mode if the PIC register hasn't been used yet.
(sparc_pic_register_p): Test reload_in_progress for consistency's sake.
2019-09-01 Jakub Jelinek <jakub@redhat.com>
PR middle-end/91623

9
gcc/config/sparc/sparc.c
View File

@ -4201,6 +4201,13 @@ eligible_for_sibcall_delay (rtx_insn *trial)
static bool
sparc_cannot_force_const_mem (machine_mode mode, rtx x)
{
/* After IRA has run in PIC mode, it is too late to put anything into the
constant pool if the PIC register hasn't already been initialized. */
if ((lra_in_progress || reload_in_progress)
&& flag_pic
&& !crtl->uses_pic_offset_table)
return true;
switch (GET_CODE (x))
{
case CONST_INT:
@ -4450,7 +4457,7 @@ sparc_pic_register_p (rtx x)
return true;
if (!HARD_REGISTER_P (pic_offset_table_rtx)
&& (HARD_REGISTER_P (x) || lra_in_progress)
&& (HARD_REGISTER_P (x) || lra_in_progress || reload_in_progress)
&& ORIGINAL_REGNO (x) == REGNO (pic_offset_table_rtx))
return true;

4
gcc/testsuite/ChangeLog
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@ -1,3 +1,7 @@
2019-09-01 Eric Botcazou <ebotcazou@adacore.com>
* gcc.c-torture/execute/20190901-1.c: New test.
2019-09-01 Paul Thomas <pault@gcc.gnu.org>
* gfortran.dg/select_rank_1.f90 : New test.

36
gcc/testsuite/gcc.c-torture/execute/20190901-1.c Normal file
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@ -0,0 +1,36 @@
/* PR target/91472 */
/* Reported by John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> */
typedef unsigned int gmp_uint_least32_t;
union ieee_double_extract
{
struct
{
gmp_uint_least32_t sig:1;
gmp_uint_least32_t exp:11;
gmp_uint_least32_t manh:20;
gmp_uint_least32_t manl:32;
} s;
double d;
};
double __attribute__((noipa))
tests_infinity_d (void)
{
union ieee_double_extract x;
x.s.exp = 2047;
x.s.manl = 0;
x.s.manh = 0;
x.s.sig = 0;
return x.d;
}
int
main (void)
{
double x = tests_infinity_d ();
if (x == 0.0)
__builtin_abort ();
return 0;
}