OpenE2K/gcc
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Re-enabling of RDRND for Silvermont.

Browse Source 
2018-01-15  Sebastian Peryt  <sebastian.peryt@intel.com>

gcc/

	PR target/83546
	* config/i386/i386.c (ix86_option_override_internal): Add PTA_RDRND
	to PTA_SILVERMONT.

2018-01-15  Sebastian Peryt  <sebastian.peryt@intel.com>

gcc/testsuite/

	PR target/83546
	* gcc.target/i386/pr83546.c: New test.

From-SVN: r256777
This commit is contained in:
Sebastian Peryt 2018-01-17 10:02:13 +01:00 committed by Sebastian Peryt
parent 566588f1a2
commit a3ed8bc3e6
4 changed files with 30 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
gcc/ChangeLog
View File

@ -1,3 +1,9 @@
2018-01-16 Sebastian Peryt <sebastian.peryt@intel.com>
PR target/83546
* config/i386/i386.c (ix86_option_override_internal): Add PTA_RDRND
to PTA_SILVERMONT.
2018-01-16 Michael Meissner <meissner@linux.vnet.ibm.com>
* config.gcc (powerpc*-linux*-*): Add support for 64-bit little

2
gcc/config/i386/i386.c
View File

@ -3474,7 +3474,7 @@ ix86_option_override_internal (bool main_args_p,
#define PTA_BONNELL \
(PTA_CORE2 | PTA_MOVBE)
#define PTA_SILVERMONT \
(PTA_WESTMERE | PTA_MOVBE)
(PTA_WESTMERE | PTA_MOVBE | PTA_RDRND)
#define PTA_KNM \
(PTA_KNL | PTA_AVX5124VNNIW | PTA_AVX5124FMAPS | PTA_AVX512VPOPCNTDQ)

5
gcc/testsuite/ChangeLog
View File

@ -1,3 +1,8 @@
2018-01-16 Sebastian Peryt <sebastian.peryt@intel.com>
PR target/83546
* gcc.target/i386/pr83546.c: New test.
2018-01-16 Eric Botcazou <ebotcazou@adacore.com>
* c-c++-common/Warray-bounds-3.c (test_memmove_bounds): Fix mismatch.

18
gcc/testsuite/gcc.target/i386/pr83546.c Normal file
View File

@ -0,0 +1,18 @@
/* PR target/83546 */
/* { dg-do compile } */
/* { dg-options "-O2 -march=silvermont" } */
int test (void)
{
unsigned int number = 0;
int result0, result1, result2, result3;
result0 = __builtin_ia32_rdrand32_step (&number);
result1 = __builtin_ia32_rdrand32_step (&number);
result2 = __builtin_ia32_rdrand32_step (&number);
result3 = __builtin_ia32_rdrand32_step (&number);
return result0 + result1 +result2 + result3;
}
/* { dg-final { scan-assembler-times "rdrand" 4 } } */