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re PR target/91454 (ICE in get_attr_avx_partial_xmm_update, at config/i386/i386.md:1804 since r274481)

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2019-08-15  Richard Biener  <rguenther@suse.de>

	PR target/91454
	* config/i386/i386-features.c (gen_gpr_to_xmm_move_src): New
	helper.
	(general_scalar_chain::make_vector_copies): Use it.

From-SVN: r274535
This commit is contained in:
Richard Biener 2019-08-15 12:44:23 +00:00 • committed by Richard Biener
parent c735f8f1a0
commit 8ed1d2fa2b
2 changed files with 30 additions and 14 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2019-08-15 Richard Biener <rguenther@suse.de>
PR target/91454
* config/i386/i386-features.c (gen_gpr_to_xmm_move_src): New
helper.
(general_scalar_chain::make_vector_copies): Use it.
2019-08-15 Bernd Edlinger <bernd.edlinger@hotmail.de>
* function.c (assign_parm_setup_reg): Handle misaligned stack arguments.

37
gcc/config/i386/i386-features.c
View file

@ -658,6 +658,25 @@ scalar_chain::emit_conversion_insns (rtx insns, rtx_insn *after)
emit_insn_after (insns, BB_HEAD (new_bb));
}
/* Generate the canonical SET_SRC to move GPR to a VMODE vector register,
zeroing the upper parts. */
static rtx
gen_gpr_to_xmm_move_src (enum machine_mode vmode, rtx gpr)
{
switch (GET_MODE_NUNITS (vmode))
{
case 1:
return gen_rtx_SUBREG (vmode, gpr, 0);
case 2:
return gen_rtx_VEC_CONCAT (vmode, gpr,
CONST0_RTX (GET_MODE_INNER (vmode)));
default:
return gen_rtx_VEC_MERGE (vmode, gen_rtx_VEC_DUPLICATE (vmode, gpr),
CONST0_RTX (vmode), GEN_INT (HOST_WIDE_INT_1U));
}
}
/* Make vector copies for all register REGNO definitions
and replace its uses in a chain. */
@ -684,13 +703,8 @@ general_scalar_chain::make_vector_copies (unsigned regno)
}
else
emit_move_insn (tmp, reg);
emit_insn (gen_rtx_SET
(gen_rtx_SUBREG (vmode, vreg, 0),
gen_rtx_VEC_MERGE (vmode,
gen_rtx_VEC_DUPLICATE (vmode,
tmp),
CONST0_RTX (vmode),
GEN_INT (HOST_WIDE_INT_1U))));
emit_insn (gen_rtx_SET (gen_rtx_SUBREG (vmode, vreg, 0),
gen_gpr_to_xmm_move_src (vmode, tmp)));
}
else if (!TARGET_64BIT && smode == DImode)
{
@ -720,13 +734,8 @@ general_scalar_chain::make_vector_copies (unsigned regno)
}
}
else
emit_insn (gen_rtx_SET
(gen_rtx_SUBREG (vmode, vreg, 0),
gen_rtx_VEC_MERGE (vmode,
gen_rtx_VEC_DUPLICATE (vmode,
reg),
CONST0_RTX (vmode),
GEN_INT (HOST_WIDE_INT_1U))));
emit_insn (gen_rtx_SET (gen_rtx_SUBREG (vmode, vreg, 0),
gen_gpr_to_xmm_move_src (vmode, reg)));
rtx_insn *seq = get_insns ();
end_sequence ();
rtx_insn *insn = DF_REF_INSN (ref);