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PATCH: Add RDRND, F16C and FSGSBASE support to -march=native
- From: "H.J. Lu" <hongjiu dot lu at intel dot com>
- To: gcc-patches at gcc dot gnu dot org, Uros Bizjak <ubizjak at gmail dot com>
- Date: Sun, 20 May 2012 09:43:58 -0700
- Subject: PATCH: Add RDRND, F16C and FSGSBASE support to -march=native
- Reply-to: "H.J. Lu" <hjl dot tools at gmail dot com>
Hi,
This patch adds RDRND, F16C and FSGSBASE support to -march=native.
Tested on Linux/x86-64. OK for trunk, 4.7 and 4.6?
Thanks.
H.J.
---
2012-05-20 H.J. Lu <hongjiu.lu@intel.com>
* config/i386/driver-i386.c (host_detect_local_cpu): Support
RDRND, F16C and FSGSBASE.
diff --git a/gcc/config/i386/driver-i386.c b/gcc/config/i386/driver-i386.c
index e93e8d9..94f3819 100644
--- a/gcc/config/i386/driver-i386.c
+++ b/gcc/config/i386/driver-i386.c
@@ -398,6 +398,7 @@ const char *host_detect_local_cpu (int argc, const char **argv)
unsigned int has_fma = 0, has_fma4 = 0, has_xop = 0;
unsigned int has_bmi = 0, has_bmi2 = 0, has_tbm = 0, has_lzcnt = 0;
unsigned int has_hle = 0, has_rtm = 0;
+ unsigned int has_rdrnd = 0, has_f16c = 0, has_fsgsbase = 0;
bool arch;
@@ -445,6 +446,8 @@ const char *host_detect_local_cpu (int argc, const char **argv)
has_aes = ecx & bit_AES;
has_pclmul = ecx & bit_PCLMUL;
has_fma = ecx & bit_FMA;
+ has_f16c = ecx & bit_F16C;
+ has_rdrnd = ecx & bit_RDRND;
has_cmpxchg8b = edx & bit_CMPXCHG8B;
has_cmov = edx & bit_CMOV;
@@ -461,6 +464,7 @@ const char *host_detect_local_cpu (int argc, const char **argv)
has_rtm = ebx & bit_RTM;
has_avx2 = ebx & bit_AVX2;
has_bmi2 = ebx & bit_BMI2;
+ has_fsgsbase = ebx & bit_FSGSBASE;
}
/* Check cpuid level of extended features. */
@@ -733,11 +737,14 @@ const char *host_detect_local_cpu (int argc, const char **argv)
const char *lzcnt = has_lzcnt ? " -mlzcnt" : " -mno-lzcnt";
const char *hle = has_hle ? " -mhle" : " -mno-hle";
const char *rtm = has_rtm ? " -mrtm" : " -mno-rtm";
+ const char *rdrnd = has_rdrnd ? " -mrdrnd" : " -mno-rdrnd";
+ const char *f16c = has_f16c ? " -mf16c" : " -mno-f16c";
+ const char *fsgsbase = has_fsgsbase ? " -mfsgsbase" : " -mno-fsgsbase";
options = concat (options, cx16, sahf, movbe, ase, pclmul,
popcnt, abm, lwp, fma, fma4, xop, bmi, bmi2,
tbm, avx, avx2, sse4_2, sse4_1, lzcnt, rtm,
- hle, NULL);
+ hle, rdrnd, f16c, fsgsbase, NULL);
}
done: