Hello!
Attached patch removes obsolete register allocator workaround from
gcc-4.6 era. The problem was fixed in gcc-4.7+.
2015-09-28 Uros Bizjak <ubiz...@gmail.com>
* config/i386/cpuinfo.c (__get_cpuid_output): Remove.
(__cpu_indicator_init): Call __get_cpuid, not __get_cpuid_output.
Bootstrapped and regression tested on x86_64-linux-gnu {,-m32}.
Committed to mainline SVN.
Uros.
Index: config/i386/cpuinfo.c
===================================================================
--- config/i386/cpuinfo.c (revision 240579)
+++ config/i386/cpuinfo.c (working copy)
@@ -381,20 +381,6 @@ get_available_features (unsigned int ecx, unsigned
__cpu_model.__cpu_features[0] = features;
}
-/* A noinline function calling __get_cpuid. Having many calls to
- cpuid in one function in 32-bit mode causes GCC to complain:
- "can't find a register in class CLOBBERED_REGS". This is
- related to PR rtl-optimization 44174. */
-
-static int __attribute__ ((noinline))
-__get_cpuid_output (unsigned int __level,
- unsigned int *__eax, unsigned int *__ebx,
- unsigned int *__ecx, unsigned int *__edx)
-{
- return __get_cpuid (__level, __eax, __ebx, __ecx, __edx);
-}
-
-
/* A constructor function that is sets __cpu_model and __cpu_features with
the right values. This needs to run only once. This constructor is
given the highest priority and it should run before constructors without
@@ -406,7 +392,7 @@ __cpu_indicator_init (void)
{
unsigned int eax, ebx, ecx, edx;
- int max_level = 5;
+ int max_level;
unsigned int vendor;
unsigned int model, family, brand_id;
unsigned int extended_model, extended_family;
@@ -416,7 +402,7 @@ __cpu_indicator_init (void)
return 0;
/* Assume cpuid insn present. Run in level 0 to get vendor id. */
- if (!__get_cpuid_output (0, &eax, &ebx, &ecx, &edx))
+ if (!__get_cpuid (0, &eax, &ebx, &ecx, &edx))
{
__cpu_model.__cpu_vendor = VENDOR_OTHER;
return -1;
@@ -431,7 +417,7 @@ __cpu_indicator_init (void)
return -1;
}
- if (!__get_cpuid_output (1, &eax, &ebx, &ecx, &edx))
+ if (!__get_cpuid (1, &eax, &ebx, &ecx, &edx))
{
__cpu_model.__cpu_vendor = VENDOR_OTHER;
return -1;
