[MIPS] Fix instable BogoMIPS on multi-issue processors.
Increase alignment of BogoMIPS loop to 8 bytes. Having the delay loop overlap cache line boundaries may cause instable delays. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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@ -19,18 +19,20 @@ static inline void __delay(unsigned long loops)
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{
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if (sizeof(long) == 4)
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__asm__ __volatile__ (
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".set\tnoreorder\n"
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"1:\tbnez\t%0,1b\n\t"
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"subu\t%0,1\n\t"
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".set\treorder"
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" .set noreorder \n"
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" .align 3 \n"
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"1: bnez %0, 1b \n"
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" subu %0, 1 \n"
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" .set reorder \n"
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: "=r" (loops)
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: "0" (loops));
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else if (sizeof(long) == 8)
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__asm__ __volatile__ (
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".set\tnoreorder\n"
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"1:\tbnez\t%0,1b\n\t"
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"dsubu\t%0,1\n\t"
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".set\treorder"
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" .set noreorder \n"
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" .align 3 \n"
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"1: bnez %0, 1b \n"
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" dsubu %0, 1 \n"
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" .set reorder \n"
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: "=r" (loops)
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: "0" (loops));
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}
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