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re PR go/52342 (64-bit go.test/test/chan/doubleselect.go times out on Solaris/SPARC)

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PR go/52342
runtime: Better big-endian identity hash function.

From-SVN: r184914
This commit is contained in:
Ian Lance Taylor 2012-03-05 06:39:08 +00:00
parent dbe1e4a5a6
commit 5e60b5708e
1 changed files with 6 additions and 1 deletions
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7
libgo/runtime/go-type-identity.c
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@ -6,6 +6,7 @@
#include <stddef.h>
#include "config.h"
#include "go-type.h"
/* The 64-bit type. */
@ -31,7 +32,11 @@ __go_type_hash_identity (const void *key, uintptr_t key_size)
unsigned char a[8];
} u;
u.v = 0;
__builtin_memcpy (&u.a, key, key_size);
#ifdef WORDS_BIGENDIAN
__builtin_memcpy (&u.a[8 - key_size], key, key_size);
#else
__builtin_memcpy (&u.a[0], key, key_size);
#endif
if (sizeof (uintptr_t) >= 8)
return (uintptr_t) u.v;
else