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| author | Jakub Jelinek <jakub@redhat.com> | 2014-06-24 16:58:19 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2014-06-24 16:58:19 +0200 |
| commit | 8d37375b0541d879b371b355c2ff5d57ddfcd53e (patch) | |
| tree | 7730dcd205b9c85cb6d28279bd18fe0ab09b850f /gcc | |
| parent | d13073607fee805d1705336f672969e5db89fd2b (diff) | |
| download | gcc-8d37375b0541d879b371b355c2ff5d57ddfcd53e.zip gcc-8d37375b0541d879b371b355c2ff5d57ddfcd53e.tar.gz gcc-8d37375b0541d879b371b355c2ff5d57ddfcd53e.tar.bz2 | |
re PR target/61570 (-march=native CPU you selected does not support x86-64 instruction under QEMU)
PR target/61570
* config/i386/driver-i386.c (host_detect_local_cpu): For unknown
model family 6 CPU with has_longmode never use a CPU without
64-bit support.
From-SVN: r211945
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/config/i386/driver-i386.c | 5 |
2 files changed, 12 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 00bad43..e29fcaf 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,10 @@ +2014-06-24 Jakub Jelinek <jakub@redhat.com> + + PR target/61570 + * config/i386/driver-i386.c (host_detect_local_cpu): For unknown + model family 6 CPU with has_longmode never use a CPU without + 64-bit support. + 2014-06-24 H.J. Lu <hongjiu.lu@intel.com> PR target/61570 diff --git a/gcc/config/i386/driver-i386.c b/gcc/config/i386/driver-i386.c index 3e8a995..4cd0b3d 100644 --- a/gcc/config/i386/driver-i386.c +++ b/gcc/config/i386/driver-i386.c @@ -745,6 +745,11 @@ const char *host_detect_local_cpu (int argc, const char **argv) /* Assume Core 2. */ cpu = "core2"; } + else if (has_longmode) + /* Perhaps some emulator? Assume x86-64, otherwise gcc + -march=native would be unusable for 64-bit compilations, + as all the CPUs below are 32-bit only. */ + cpu = "x86-64"; else if (has_sse3) /* It is Core Duo. */ cpu = "pentium-m"; |