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re PR target/61570 (-march=native CPU you selected does not support x86-64 instruction under QEMU)

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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
This commit is contained in:
Jakub Jelinek 2014-06-24 16:58:19 +02:00 committed by Jakub Jelinek
parent d13073607f
commit 8d37375b05
2 changed files with 12 additions and 0 deletions
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7
gcc/ChangeLog
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@ -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

5
gcc/config/i386/driver-i386.c
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@ -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";