On 03/27/2011 01:17 AM, Tom Stellard wrote:
Registers that are used inside of loops need to be considered live
starting with the very first instruction in the loop.
This fixes the following piglit tests on r300:
- glsl-fs-loop-redundant-condition
- glsl-vs-loop-redundant-condition
- glsl-vs-vec4-indexing-temp-dst-in-loop
NOTE: This is a candidate for the 7.9 and 7.10 branches.
This also fixes glsl-vs-loop-redundant-condition on i965.
It doesn't fix glsl-fs-loop-redunant-condition on i965, but that's
hardly surprising considering we're using a different IR and register
allocator for FS.
Strangely, glsl-vs-vec4-indexing-temp-dst-inloop already passes on i965.
I'm not sure why it would work on i965 but not r300 if the bug is in
the common code. But it's quite possible.
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