power4 compiling

[Alan Modra]

On Mon, Nov 03, 2003 at 10:09:30AM -0600, Hollis Blanchard wrote:
> You shouldn't need to comment out tlbiel. Instead do this:
> 	CFLAGS = -mtune=power4 -Wa,-mcpu=power4
> That will tell the compiler not to use POWER4-specific instructions,
> but also tell the assembler it's ok when we use inline asm statements.

No, this is dangerous.  -mcpu=power4 tells the assembler to use the
power4 form of mtcrf if it so happens that only one field of cr is
being set.  gcc may generate such mtcrf instruction.

--
Alan Modra
IBM OzLabs - Linux Technology Centre

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