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Assume x86-64 if a 32-bit processor supports SSE2 and 64-bit

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PR target/61570
	* config/i386/driver-i386.c (host_detect_local_cpu): Set arch
	to x86-64 if a 32-bit processor supports SSE2 and 64-bit.

From-SVN: r211901
This commit is contained in:
H.J. Lu 2014-06-23 16:28:36 +00:00 committed by H.J. Lu
parent 5c7dac8aa1
commit 228e5d2b0c
2 changed files with 43 additions and 16 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2014-06-23 H.J. Lu <hongjiu.lu@intel.com>
PR target/61570
* config/i386/driver-i386.c (host_detect_local_cpu): Set arch
to x86-64 if a 32-bit processor supports SSE2 and 64-bit.
2014-06-23 James Greenhalgh <james.greenhalgh@arm.com>
* config/aarch64/aarch64.md (addsi3_aarch64): Set "simd" attr to

53
gcc/config/i386/driver-i386.c
View File

@ -415,6 +415,7 @@ const char *host_detect_local_cpu (int argc, const char **argv)
bool arch;
unsigned int l2sizekb = 0;
unsigned int arch_64bit = 1;
if (argc < 1)
return NULL;
@ -656,11 +657,14 @@ const char *host_detect_local_cpu (int argc, const char **argv)
{
case PROCESSOR_I386:
/* Default. */
arch_64bit = 0;
break;
case PROCESSOR_I486:
arch_64bit = 0;
cpu = "i486";
break;
case PROCESSOR_PENTIUM:
arch_64bit = 0;
if (arch && has_mmx)
cpu = "pentium-mmx";
else
@ -745,21 +749,25 @@ const char *host_detect_local_cpu (int argc, const char **argv)
/* Assume Core 2. */
cpu = "core2";
}
else if (has_sse3)
/* It is Core Duo. */
cpu = "pentium-m";
else if (has_sse2)
/* It is Pentium M. */
cpu = "pentium-m";
else if (has_sse)
/* It is Pentium III. */
cpu = "pentium3";
else if (has_mmx)
/* It is Pentium II. */
cpu = "pentium2";
else
/* Default to Pentium Pro. */
cpu = "pentiumpro";
{
arch_64bit = 0;
if (has_sse3)
/* It is Core Duo. */
cpu = "pentium-m";
else if (has_sse2)
/* It is Pentium M. */
cpu = "pentium-m";
else if (has_sse)
/* It is Pentium III. */
cpu = "pentium3";
else if (has_mmx)
/* It is Pentium II. */
cpu = "pentium2";
else
/* Default to Pentium Pro. */
cpu = "pentiumpro";
}
}
else
/* For -mtune, we default to -mtune=generic. */
@ -773,21 +781,30 @@ const char *host_detect_local_cpu (int argc, const char **argv)
if (has_longmode)
cpu = "nocona";
else
cpu = "prescott";
{
cpu = "prescott";
arch_64bit = 0;
}
}
else
cpu = "pentium4";
{
cpu = "pentium4";
arch_64bit = 0;
}
break;
case PROCESSOR_GEODE:
arch_64bit = 0;
cpu = "geode";
break;
case PROCESSOR_K6:
arch_64bit = 0;
if (arch && has_3dnow)
cpu = "k6-3";
else
cpu = "k6";
break;
case PROCESSOR_ATHLON:
arch_64bit = 0;
if (arch && has_sse)
cpu = "athlon-4";
else
@ -896,6 +913,10 @@ const char *host_detect_local_cpu (int argc, const char **argv)
const char *xsavec = has_xsavec ? " -mxsavec" : " -mno-xsavec";
const char *xsaves = has_xsaves ? " -mxsaves" : " -mno-xsaves";
/* Assume x86-64 if a 32-bit processor supports SSE2 and 64-bit. */
if (arch_64bit == 0 && has_sse2 && has_longmode)
cpu = "x86-64";
options = concat (options, mmx, mmx3dnow, sse, sse2, sse3, ssse3,
sse4a, cx16, sahf, movbe, aes, sha, pclmul,
popcnt, abm, lwp, fma, fma4, xop, bmi, bmi2,