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re PR target/80569 (i686: "shrx" instruction generated in 16-bit mode)

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PR target/80569
	* config/i386/i386.c (ix86_option_override_internal): Disable
	BMI, BMI2 and TBM instructions for -m16.

testsuite/ChangeLog:

	PR target/80569
	* gcc.target/i386/pr80569.c: New test.

From-SVN: r250459
This commit is contained in:
Uros Bizjak 2017-07-23 12:28:26 +02:00
parent 4a15d84228
commit f36dda3b64
4 changed files with 34 additions and 8 deletions
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22
gcc/ChangeLog
View file

@ -1,3 +1,9 @@
2017-07-23 Uros Bizjak <ubizjak@gmail.com>
PR target/80569
* config/i386/i386.c (ix86_option_override_internal): Disable
BMI, BMI2 and TBM instructions for -m16.
2017-07-21 Carl Love <cel@us.ibm.com>
* config/rs6000/rs6000-c.c (altivec_overloaded_builtins): Add
@ -384,10 +390,10 @@
2017-07-18 Robin Dapp <rdapp@linux.vnet.ibm.com>
* tree-vect-data-refs.c (vect_enhance_data_refs_alignment): Remove
* tree-vect-data-refs.c (vect_enhance_data_refs_alignment): Remove
body_cost_vec from _vect_peel_extended_info.
(vect_peeling_hash_get_lowest_cost): Do not set body_cost_vec.
(vect_peeling_hash_choose_best_peeling): Remove body_cost_vec and
(vect_peeling_hash_choose_best_peeling): Remove body_cost_vec and
npeel.
2017-07-18 Bin Cheng <bin.cheng@arm.com>
@ -431,7 +437,7 @@
2017-07-17 Yury Gribov <tetra2005@gmail.com>
* tree-vrp.c (compare_assert_loc): Fix comparison function
* tree-vrp.c (compare_assert_loc): Fix comparison function
to return predictable results.
2017-07-17 Claudiu Zissulescu <claziss@synopsys.com>
@ -3422,11 +3428,11 @@
2017-06-27 Jerome Lambourg <lambourg@adacore.com>
* config/vxworks.h (VXWORKS_LIBS_RTP): Alternative definition for
64bit configurations.
(PTR_DIFF_TYPE): Alternative definition for TARGET_LP64.
(SIZE_TYPE): Likewise.
* config/vxworks.c (vxworks_emutls_var_fields): Use
long_unsigned_type_node instead of unsigned_type_node as the offset
64bit configurations.
(PTR_DIFF_TYPE): Alternative definition for TARGET_LP64.
(SIZE_TYPE): Likewise.
* config/vxworks.c (vxworks_emutls_var_fields): Use
long_unsigned_type_node instead of unsigned_type_node as the offset
field type, which is "pointer" mode in emutls.c.
2017-06-27 Jakub Jelinek <jakub@redhat.com>

6
gcc/config/i386/i386.c
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@ -6284,6 +6284,12 @@ ix86_option_override_internal (bool main_args_p,
opts->x_ix86_isa_flags
|= OPTION_MASK_ISA_LZCNT & ~opts->x_ix86_isa_flags_explicit;
/* Disable BMI, BMI2 and TBM instructions for -m16. */
if (TARGET_16BIT_P(opts->x_ix86_isa_flags))
opts->x_ix86_isa_flags
&= ~((OPTION_MASK_ISA_BMI | OPTION_MASK_ISA_BMI2 | OPTION_MASK_ISA_TBM)
& ~opts->x_ix86_isa_flags_explicit);
/* Validate -mpreferred-stack-boundary= value or default it to
PREFERRED_STACK_BOUNDARY_DEFAULT. */
ix86_preferred_stack_boundary = PREFERRED_STACK_BOUNDARY_DEFAULT;

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2017-07-23 Uros Bizjak <ubizjak@gmail.com>
PR target/80569
* gcc.target/i386/pr80569.c: New test.
2017-07-21 Carl Love <cel@us.ibm.com>
* gcc.target/powerpc/builtins-2.c (vmulosh, vmulouh, vmulesh,

9
gcc/testsuite/gcc.target/i386/pr80569.c Normal file
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@ -0,0 +1,9 @@
/* PR target/80569 */
/* { dg-do assemble } */
/* { dg-options "-O2 -m16 -march=haswell" } */
void load_kernel(void *setup_addr)
{
unsigned int seg = (unsigned int)setup_addr >> 4;
asm("movl %0, %%es" : : "r"(seg));
}