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Use unspec_volatile on rdrand<mode>_1 

gcc/

	PR target/53416
	* config/i386/i386.md (UNSPEC_RDRAND): Renamed to ...
	(UNSPECV_RDRAND): This.
	(rdrand<mode>_1): Updated.

gcc/testsuite/

	PR target/53416
	* gcc.target/i386/pr53416.c: New file.

From-SVN: r187709
This commit is contained in:
H.J. Lu 2012-05-21 05:31:45 -07:00
parent 47fb0e185a
commit 9b5effa449
4 changed files with 35 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
gcc/ChangeLog
View File

@ -1,3 +1,10 @@
2012-05-21 H.J. Lu <hongjiu.lu@intel.com>
PR target/53416
* config/i386/i386.md (UNSPEC_RDRAND): Renamed to ...
(UNSPECV_RDRAND): This.
(rdrand<mode>_1): Updated.
2012-05-21 Richard Guenther <rguenther@suse.de>
* tree-loop-distribution.c (can_generate_builtin): Reject

10
gcc/config/i386/i386.md
View File

@ -176,9 +176,6 @@
;; For CRC32 support
UNSPEC_CRC32
;; For RDRAND support
UNSPEC_RDRAND
;; For BMI support
UNSPEC_BEXTR
@ -208,6 +205,9 @@
UNSPECV_WRFSBASE
UNSPECV_WRGSBASE
;; For RDRAND support
UNSPECV_RDRAND
;; For RTM support
UNSPECV_XBEGIN
UNSPECV_XEND
@ -18403,9 +18403,9 @@
(define_insn "rdrand<mode>_1"
[(set (match_operand:SWI248 0 "register_operand" "=r")
(unspec:SWI248 [(const_int 0)] UNSPEC_RDRAND))
(unspec_volatile:SWI248 [(const_int 0)] UNSPECV_RDRAND))
(set (reg:CCC FLAGS_REG)
(unspec:CCC [(const_int 0)] UNSPEC_RDRAND))]
(unspec_volatile:CCC [(const_int 0)] UNSPECV_RDRAND))]
"TARGET_RDRND"
"rdrand\t%0"
[(set_attr "type" "other")

6
gcc/testsuite/ChangeLog
View File

@ -1,3 +1,9 @@
2012-05-21 Uros Bizjak <ubizjak@gmail.com>
H.J. Lu <hongjiu.lu@intel.com>
PR target/53416
* gcc.target/i386/pr53416.c: New file.
2012-05-21 Richard Guenther <rguenther@suse.de>
* gfortran.dg/pr46519-2.f90: Adjust to avoid memset transform.

17
gcc/testsuite/gcc.target/i386/pr53416.c Normal file
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@ -0,0 +1,17 @@
/* PR target/53416 */
/* { dg-options "-O2 -mrdrnd" } */
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 } } */