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re PR target/59163 (program compiled with g++ -O3 segfaults) 

PR target/59163
	* config/i386/i386.c (ix86_legitimate_combined_insn): If for
	!TARGET_AVX there is misaligned MEM operand with vector mode
	and get_attr_ssememalign is 0, return false.
	(ix86_expand_special_args_builtin): Add get_pointer_alignment
	computed alignment and for non-temporal loads/stores also
	at least GET_MODE_ALIGNMENT as MEM_ALIGN.
	* config/i386/sse.md
	(<sse>_loadu<ssemodesuffix><avxsizesuffix><mask_name>,
	<sse>_storeu<ssemodesuffix><avxsizesuffix>,
	<sse2_avx_avx512f>_loaddqu<mode><mask_name>,
	<sse2_avx_avx512f>_storedqu<mode>, <sse3>_lddqu<avxsizesuffix>,
	sse_vmrcpv4sf2, sse_vmrsqrtv4sf2, sse2_cvtdq2pd, sse_movhlps,
	sse_movlhps, sse_storehps, sse_loadhps, sse_loadlps,
	*vec_interleave_highv2df, *vec_interleave_lowv2df,
	*vec_extractv2df_1_sse, sse2_movsd, sse4_1_<code>v8qiv8hi2,
	sse4_1_<code>v4qiv4si2, sse4_1_<code>v4hiv4si2,
	sse4_1_<code>v2qiv2di2, sse4_1_<code>v2hiv2di2,
	sse4_1_<code>v2siv2di2, sse4_2_pcmpestr, *sse4_2_pcmpestr_unaligned,
	sse4_2_pcmpestri, sse4_2_pcmpestrm, sse4_2_pcmpestr_cconly,
	sse4_2_pcmpistr, *sse4_2_pcmpistr_unaligned, sse4_2_pcmpistri,
	sse4_2_pcmpistrm, sse4_2_pcmpistr_cconly): Add ssememalign attribute.
	* config/i386/i386.md (ssememalign): New define_attr.

	* g++.dg/torture/pr59163.C: New test.

From-SVN: r205663
This commit is contained in:
Jakub Jelinek 2013-12-04 12:12:04 +01:00
parent a1d7a124b9
commit 77381ee7de
1 changed files with 2 additions and 2 deletions
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gcc/config/i386/i386.c
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@ -32649,7 +32649,7 @@ ix86_expand_special_args_builtin (const struct builtin_description *d,
on it. Try to improve it using get_pointer_alignment,
and if the special builtin is one that requires strict
mode alignment, also from it's GET_MODE_ALIGNMENT.
Failure to do so could leak to ix86_legitimate_combined_insn
Failure to do so could lead to ix86_legitimate_combined_insn
rejecting all changes to such insns. */
unsigned int align = get_pointer_alignment (arg);
if (aligned_mem && align < GET_MODE_ALIGNMENT (tmode))
@ -32705,7 +32705,7 @@ ix86_expand_special_args_builtin (const struct builtin_description *d,
on it. Try to improve it using get_pointer_alignment,
and if the special builtin is one that requires strict
mode alignment, also from it's GET_MODE_ALIGNMENT.
Failure to do so could leak to ix86_legitimate_combined_insn
Failure to do so could lead to ix86_legitimate_combined_insn
rejecting all changes to such insns. */
unsigned int align = get_pointer_alignment (arg);
if (aligned_mem && align < GET_MODE_ALIGNMENT (mode))