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Support crc32 as a i386 target optimization node 

* config/i386/i386.c (ix86_valid_target_attribute_inner_p):
	Handle crc32.
	* gcc.target/i386/crc32-5.c: New test.

From-SVN: r240393
This commit is contained in:
Martin Liska 2016-09-23 09:57:07 +02:00 committed by Martin Liska
parent e70f01b561
commit fab18cc4f7
4 changed files with 35 additions and 0 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2016-09-23 Martin Liska <mliska@suse.cz>
* config/i386/i386.c (ix86_valid_target_attribute_inner_p):
Handle crc32.
2016-09-23 Martin Liska <mliska@suse.cz>
PR target/71652

1
gcc/config/i386/i386.c
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@ -6526,6 +6526,7 @@ ix86_valid_target_attribute_inner_p (tree args, char *p_strings[],
IX86_ATTR_ISA ("mmx", OPT_mmmx),
IX86_ATTR_ISA ("pclmul", OPT_mpclmul),
IX86_ATTR_ISA ("popcnt", OPT_mpopcnt),
IX86_ATTR_ISA ("crc32", OPT_mcrc32),
IX86_ATTR_ISA ("sse", OPT_msse),
IX86_ATTR_ISA ("sse2", OPT_msse2),
IX86_ATTR_ISA ("sse3", OPT_msse3),

4
gcc/testsuite/ChangeLog
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@ -1,3 +1,7 @@
2016-09-23 Martin Liska <mliska@suse.cz>
* gcc.target/i386/crc32-5.c: New test.
2016-09-23 Martin Liska <mliska@suse.cz>
* gcc.target/i386/pr71652.c: New test.

25
gcc/testsuite/gcc.target/i386/crc32-5.c Normal file
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@ -0,0 +1,25 @@
/* { dg-do compile } */
/* { dg-options "-O2" } */
/* { dg-final { scan-assembler "crc32b\[^\\n\]*eax" } } */
/* { dg-final { scan-assembler "crc32w\[^\\n\]*eax" } } */
/* { dg-final { scan-assembler "crc32l\[^\\n\]*eax" } } */
#pragma GCC target ("crc32")
unsigned int
crc32b (unsigned int x, unsigned char y)
{
return __builtin_ia32_crc32qi (x, y);
}
unsigned int
crc32w (unsigned int x, unsigned short y)
{
return __builtin_ia32_crc32hi (x, y);
}
unsigned int
crc32d (unsigned int x, unsigned int y)
{
return __builtin_ia32_crc32si (x, y);
}