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re PR rtl-optimization/78669 (ICE: in combine_and_move_insns, at ira.c:3665 with -Os -fno-tree-ter -mavx512bw)

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PR rtl-optimization/78669
	* ira.c (combine_and_move_insns): When deleting an insn, clear the
	replace flag for all used regs in that insn.

	PR rtl-optimization/78669
	* gcc.target/i386/pr78669.c: New test.

From-SVN: r243551
This commit is contained in:
Bernd Schmidt 2016-12-12 13:29:48 +00:00 committed by Bernd Schmidt
parent 8152d6eff6
commit fba1216545
4 changed files with 46 additions and 0 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2016-12-12 Bernd Schmidt <bschmidt@redhat.com>
PR rtl-optimization/78669
* ira.c (combine_and_move_insns): When deleting an insn, clear the
replace flag for all used regs in that insn.
2016-12-12 Thomas Preud'homme <thomas.preudhomme@arm.com>
* config/arm/arm-opts.h: Move struct arm_arch_core_flag and

8
gcc/ira.c
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@ -3714,6 +3714,14 @@ combine_and_move_insns (void)
remove_death (regno, use_insn);
SET_REG_N_REFS (regno, 0);
REG_FREQ (regno) = 0;
df_ref use;
FOR_EACH_INSN_USE (use, def_insn)
{
unsigned int use_regno = DF_REF_REGNO (use);
if (!HARD_REGISTER_NUM_P (use_regno))
reg_equiv[use_regno].replace = 0;
}
delete_insn (def_insn);
reg_equiv[regno].init_insns = NULL;

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2016-12-12 Bernd Schmidt <bschmidt@redhat.com>
PR rtl-optimization/78669
* gcc.target/i386/pr78669.c: New test.
2016-12-12 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
* g++.dg/debug/dwarf2/typedef1.C: Adjust pattern for last change.

27
gcc/testsuite/gcc.target/i386/pr78669.c Normal file
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@ -0,0 +1,27 @@
/* { dg-do compile } */
/* { dg-require-effective-target int128 } */
/* { dg-options "-Os -fno-tree-ter -mavx512bw " } */
typedef __int128 u128;
typedef __int128 v64u128 __attribute__((vector_size(64)));
v64u128 v64u128_g;
static inline v64u128
baz(v64u128 v64u128_0, v64u128 v64u128_3)
{
v64u128_0 |= (v64u128){} == v64u128_0;
v64u128_3 = (v64u128){} >= v64u128_3;
return v64u128_0 + v64u128_3;
}
static void __attribute__((noinline, noclone))
bar(u128 u128_0, v64u128 v64u128_3)
{
v64u128_g = baz((v64u128){(u128)1 << 64, u128_0}, v64u128_3);
}
void
foo(v64u128 v64u128_3)
{
bar(3, v64u128_3);
}